Re: [CentOS-docs] CentOS Wiki Contribution
Ralph Angenendt ralph.angene...@gmail.com писал(а) в своём письме Sat, 26 Mar 2011 23:16:58 +0300: Great, go ahead: http://wiki.centos.org/TipsAndTricks/InstallOnExt4 Can you put a bit more text around what you are doing there (especially why you drop to a shell to do the formatting and partitioning)? Thanks. Yes, I will elaborate it a bit. ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Ralph Angenendt ralph.angene...@gmail.com писал(а) в своём письме Sat, 26 Mar 2011 23:16:58 +0300: Great, go ahead: http://wiki.centos.org/TipsAndTricks/InstallOnExt4 Can you put a bit more text around what you are doing there (especially why you drop to a shell to do the formatting and partitioning)? Thanks. Yes, I will elaborate it a bit. It is done and ready to be edited. Any comments on this are appreciated. I've also probably did some really bad spelling errors 'cause I'm not native English speaker/writer. ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
On 03/27/2011 12:20 PM, Alex/AT wrote: Ralph Angenendtralph.angene...@gmail.com писал(а) в своём письме Sat, 26 Mar 2011 23:16:58 +0300: Great, go ahead:http://wiki.centos.org/TipsAndTricks/InstallOnExt4 Can you put a bit more text around what you are doing there (especially why you drop to a shell to do the formatting and partitioning)? Thanks. Yes, I will elaborate it a bit. It is done and ready to be edited. Any comments on this are appreciated. I've also probably did some really bad spelling errors 'cause I'm not native English speaker/writer. I modified it a bit. However, I fail to understand why is all this complicate procedure needed, given that starting the installer with linux ext4 (linux ext4dev for the centos releases prior to 5.5, if I am not mistaken) achieves the same goal without any need for workarounds ? The ext4 type of filesystem will be present in the disk druid interface and can be used exactly as any other one. ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Manuel Wolfshant wo...@nobugconsulting.ro писал(а) в своём письме Sun, 27 Mar 2011 14:57:27 +0400: I modified it a bit. However, I fail to understand why is all this complicate procedure needed, given that starting the installer with linux ext4 (linux ext4dev for the centos releases prior to 5.5, if I am not mistaken) achieves the same goal without any need for workarounds ? The ext4 type of filesystem will be present in the disk druid interface and can be used exactly as any other one. Oops. Did not know that. If that is the case, the the article is really not needed. -- C уважением, Alex/AT ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Alex/AT wrote on 03/27/2011 06:58 AM: Manuel Wolfshantwo...@nobugconsulting.ro писал(а) в своём письме Sun, 27 Mar 2011 14:57:27 +0400: I modified it a bit. However, I fail to understand why is all this complicate procedure needed, given that starting the installer with linux ext4 (linux ext4dev for the centos releases prior to 5.5, if I am not mistaken) achieves the same goal without any need for workarounds ? The ext4 type of filesystem will be present in the disk druid interface and can be used exactly as any other one. Oops. Did not know that. If that is the case, the the article is really not needed. My wetware failure is to blame here - was thinking that only came in with RHEL6 and failed to check; however, a brief article on ext4 the right way would still be worthwhile. Phil ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
On 27 March 2011 13:33, Phil Schaffner philip.r.schaff...@nasa.gov wrote: Alex/AT wrote on 03/27/2011 06:58 AM: Manuel Wolfshantwo...@nobugconsulting.ro писал(а) в своём письме Sun, 27 Mar 2011 14:57:27 +0400: I modified it a bit. However, I fail to understand why is all this complicate procedure needed, given that starting the installer with linux ext4 (linux ext4dev for the centos releases prior to 5.5, if I am not mistaken) achieves the same goal without any need for workarounds ? The ext4 type of filesystem will be present in the disk druid interface and can be used exactly as any other one. Oops. Did not know that. If that is the case, the the article is really not needed. My wetware failure is to blame here - was thinking that only came in with RHEL6 and failed to check; however, a brief article on ext4 the right way would still be worthwhile. Perhaps one of the QA team would test / confirm an ext4 installation, whilst QA'ing C-5.6 ? Looks east . . . Wolfy ? Looks west . . . Phil ? Alan. ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Oops. Did not know that. If that is the case, the the article is really not needed. My wetware failure is to blame here - was thinking that only came in with RHEL6 and failed to check; however, a brief article on ext4 the right way would still be worthwhile. Perhaps one of the QA team would test / confirm an ext4 installation, whilst QA'ing C-5.6 ? Not sure about QA team, but I've just tested ext4 install using linux ext4 on CentOS 5.5. Works fine. ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Manuel Wolfshant wrote on 03/27/2011 06:57 AM: ... I modified it a bit. However, I fail to understand why is all this complicate procedure needed, given that starting the installer with linux ext4 (linux ext4dev for the centos releases prior to 5.5, if I am not mistaken) achieves the same goal without any need for workarounds ? The ext4 type of filesystem will be present in the disk druid interface and can be used exactly as any other one. Hummm... Perhaps merits a mention in the Release Notes. Don't see it in either ours or upstream's. Phil ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
Re: [CentOS-docs] CentOS Wiki Contribution
Alan Bartlett wrote on 03/27/2011 08:39 AM: Perhaps one of the QA team would test / confirm an ext4 installation, whilst QA'ing C-5.6 ? Looks east . . . Wolfy ? Looks west . . . Phil ? Doing that as we communicate. :-) I also note that the procedure does not seem to be spelled out in the upstream docs, or at least I have so far failed to find it. Any links welcome. A logical place would have been: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/s2-x86-starting-bootopts.html Phil -- Philip R. Schaffner, RTD/ESB Phone: (757)864-1809 NASA/Langley Research Center, MS 473 FAX: (757)864-7891 8 North Dryden Street, B1299, Room 109 Hampton, VA 23681-2199 ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
[CentOS-virt] Vlan trunk/QinQ connected to KVM guest
I am running KVM guests under Redhat 6. I tried to setup a bridge device to an interface with a vlan trunk connected to a Juniper switch. On the KVM host, I am able to define vlans and access them via the vlan trunk. I was not able to access a vlan from the kvm guest connected to the bridged interface. I believe this would be what is commonly called QinQ or 802.1ad. Is this possible to do? I am using virtio drivers. If I can't do this, I guess I will end up with alot of bridged vlans. I tried doing this a while back under the vmware server and it did not work either. I think the reason that it did not work had something to do with arp resolution.I believe I read some where that it may be possible under ESXi. Thanks, Nataraj ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Vlan trunk/QinQ connected to KVM guest
On 03/27/2011 04:09 PM, Nataraj wrote: I am running KVM guests under Redhat 6. I tried to setup a bridge device to an interface with a vlan trunk connected to a Juniper switch. On the KVM host, I am able to define vlans and access them via the vlan trunk. I was not able to access a vlan from the kvm guest connected to the bridged interface. I believe this would be what is commonly called QinQ or 802.1ad. Is this possible to do? I am using virtio drivers. If I can't do this, I guess I will end up with alot of bridged vlans. I tried doing this a while back under the vmware server and it did not work either. I think the reason that it did not work had something to do with arp resolution.I believe I read some where that it may be possible under ESXi. Thanks, Nataraj ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt After thinking about this further I guess it would look like somehow being able to configure a port (the one connected to the kvm VM) on the linux bridge as being a vlan trunk. Alternatively, if the guest (also running linux) were able to support QinQ I think I could configure QinQ on the guest as well as on the port on the Juniper switch, though that would only work with 1 guest, so the first solution would be preferred. Nataraj ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-es] Borré /boot ¿Podría reinstalarlo?
A manera personal, me alegro mucho que hayas podido solucionar dicho percance. Por otro lado es posible que documentes y publiques los pasos que seguiste? Gracias. 2011/3/27 Miguel A. Velasco miguel.suscripc...@gmail.com Hola de nuevos a todos, este fin de semana llegó el momento de lanzar un shutdown -r now sobre el servidor que tantos escalofríos me proporcionó la semana pasada y os comento que todo fue estupendamente. No hubo sustos de última hora y el kernel cargó correctamente y en la misma versión que lo tenía antes. Sólo deciros que estoy muy agradecido a todos los que desde esta lista me habéis ayudado y me habéis animado. De estos errores se aprende, que duda cabe, así que me pondré las pilas con la clonación de los servidores críticos para la empresa e incluiré en el plan de copias (para el que usamos BackupPC) los /boot y /bin de todos los servidores linux. Mi más sincera gratitud a todos. Un cordial saludo desde Madrid (España). Miguel A. Velasco Ing de Sistemas Tenia pensado un dd if=/dev/sda1 of=/bakup/boot.iso bs=1M estando la carpeta backup en un disco montado por si se daña el sda si me llevo por error el boot con un comando inverso de dd no tendria problemas no? El servidor no esta accesible y de esta forma con un ssh podria solucionarlo. Desde ya mil gracias. ** ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es -- Cordialmente: Juan Pablo Botero Administrador de Sistemas informáticos Fedora Ambassador for Colombia Cargos actuales: Professional ABACO DE BOLITAS Developer level 1 Certified ABACO DE BOLITAS certifed developer. ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
[CentOS] Virtualization platform choice
Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). - Jussi -- Jussi Hirvi * Green Spot Topeliuksenkatu 15 C * 00250 Helsinki * Finland Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hi...@greenspot.fi * http://www.greenspot.fi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 03/27/11 11:57, Jussi Hirvi wrote: Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). - Jussi VMware ESXi is definitely a good choice. I use it at work (the free version as well) and haven't regretted it. No tutorials needed, everything's pretty straightforward. Yes, it can only be graphically managed from Windows clients (vsphere client), however the command line tools are available for Linux as well. Tried running the vsphere client using wine but that didn't work. No issues with CentOS 5 guests here. Glenn ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 03/27/2011 02:57 AM, Jussi Hirvi wrote: Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). I'm currently using Ubuntu Server 10.04-LTS as a host for KVM running CentOS5.5 guests I migrated from VMware Server 2. Works fine. A nice feature of current generation KVM is that you are supposed to be able to do live migration even without shared storage (although I haven't tested that yet). I wrote some custom scripts to allow me to take LVM snapshots for whole-image backups and I'm pretty happy with the who setup. The only corners I encountered were 1) A lack of documentation on how to configure bridging over bonded interfaces for the host server. It turned out to be fairly easy - just not clearly documented anyplace I could find. 2) The default configuration for rebooting/shutting dow the host server just 'shoots the guests in the head' rather than having them shutdown cleanly. :( You will want to write something to make sure they get shutdown properly instead. -- Benjamin Franz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] updating without rebooting
On Fri, Mar 25, 2011 at 06:59:26AM -0400, Robert Heller wrote: Yes, you only *need* to reboot to pick up a new kernel. Unlike MS-Windows, none of the other updates *require* a reboot. Note: if Warning, though: there's a big difference between *need* and *should*. glibc (or other widely used shared libraries) is updated it (they) won't get picked up unless *ALL* of the processes that use it (them) are restarted. Other changes may only take effect once a reboot occurs. In other cases you may end up with some programs using new setting and others using old settings (eg tzdata; if you've just had a new daylight-savings rule change then updating your tzdata rpms will cause newly started programs to use the new rules, but old programs to still use the old). It's not just limited to glibc. So, depending on the packages being updated, I normally _recommend_ a reboot. But, being a sensible OS, you can reboot at the time of your choosing, not at patch time :-) -- rgds Stephen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
What makes you think CentOS is not willing to be commercially sponsored? (Or only work developing CentOS?) I would LOVE to be able to do CentOS as my only job. No one that we know of is willing to pay a full time salary for 1 or 2 or 3 people to develop CentOS. If they would pay for it, we would likely do it. They might be willing for us to let their current employees do some CentOS things ... but not willing to pay for CentOS development. Sorry, that was just my impression from previous posts. I guess I have that wrong. Maybe I am confusing the reluctance to take donations at the moment with commercial sponsorship. Thanks for correcting me. Couple of questions, then What is the average current time commitment per week, i.e. man hours that is currently volunteered by the core developers? What would that need to increase to, to significantly reduce release times (which I think was the overall goal)? What would the *market rate* be for the skills required? Just to give a rough figure to work with and shouldn't be related to any particular person's current day job. Thanks in advance, Ian. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). vSphere ESX(i) is good product. It runs on bare metal so there is no OS underneath it. ESX has a linux based environment that sort of runs at the hypervisor level that people use for basic admin but VMware is trying to phase that out as most everything you can do with ESX's console can be done through ESXi's API's and the remote CLI. Only downside to the free version is certain API's are unavailable and if you need those features you may have to go to a paid version. -- Drew Nothing in life is to be feared. It is only to be understood. --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
2011/3/27 Drew drew@gmail.com: Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). vSphere ESX(i) is good product. It runs on bare metal so there is no OS underneath it. ESX has a linux based environment that sort of runs at the hypervisor level that people use for basic admin but VMware is trying to phase that out as most everything you can do with ESX's console can be done through ESXi's API's and the remote CLI. Only downside to the free version is certain API's are unavailable and if you need those features you may have to go to a paid version. Biggest problem in free esxi is that it lacks backup vcb api, so full image backups are almost impossible under free esxi host .. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, Mar 27, 2011 at 8:53 AM, Drew drew@gmail.com wrote:
Any experience with the free VMware vSphere Hypervisor?. (It was
formerly known as VMware ESXi Single Server or free ESXi.)
http://www.vmware.com/products/vsphere-hypervisor/overview.html
I would need a tutorial about that... For example, does that run without
a host OS? Can it be managed only via Win clients? Issues with CentOS
4/5 guests (all my systems are currently CentOS 4/5).
vSphere ESX(i) is good product. It runs on bare metal so there is no
OS underneath it. ESX has a linux based environment that sort of runs
at the hypervisor level that people use for basic admin but VMware is
trying to phase that out as most everything you can do with ESX's
console can be done through ESXi's API's and the remote CLI.
I like vSphere in corporate environments, and LabManager with it for
burning guest images very quickly. The VMWareTools are not as
integrated as I would like, and their RPM names are quite misleading.
(The name of the file does not match the name of the actual RPM
reqported by `rpm -qf --%{name}-%{version}-%{release}.%{arch}.rpm\n',
and it's not as well integrated for kernel changes or host cloning as
I'd like. (Ask if you're curious.) But for corporate grade
virtualization, well built management tools, and corporate support,
they're very hard to beat. And for virtualizing weird old setups, like
SCO OpenServer 5.0.x, they're the only thing I tested that worked.
KVM was a dog in testing under CentOS and RHEL 5.x. The bridged
networking has *NO* network configuration tool that understands how to
set it up, you have to do it manually, and that's a deficit I've
submitted upstream as an RFE. It may work well with CentOS and RHEL 6,
i've not had a chance to test it.
VirtualBox is friendly, lightweight, and I'm using it right now under
MacOS X for a Debian box, and on Windows boxes for testing Linux
environments. Works quite well, friendly interfaces, very quick to
learn, I like it a light for one-off setups.
Xen, I did a stack of work with for CentOS 4 a few years ago. It
worked well, particularly with the para-virtualized kernels to improve
performance. (Don't virtualize things you don't have to!!! Uses custom
kernels to let the guest and server not waste time virtualizing IO
requests, especially for disk IO). I've not played with its management
tools since, and it didn't work well with virtualizing odd old OS's.
(I wanted to use it for OpenServer, but the support team who came
out to demonstrate it couldn't even get the keyboards interacting
reliably for the installation. It was a complete failure for that
project.)
You've got a lot of choices. I'd start with assessing what you need
for your guest environments, and where it's going to be managed from,
and be sure that you've got access to the management tools.
Only downside to the free version is certain API's are unavailable and
if you need those features you may have to go to a paid version.
This is true for everything in life.
___
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Re: [CentOS] Virtualization platform choice
On Sun, Mar 27, 2011 at 9:16 AM, Eero Volotinen eero.voloti...@iki.fi wrote: 2011/3/27 Drew drew@gmail.com: Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). vSphere ESX(i) is good product. It runs on bare metal so there is no OS underneath it. ESX has a linux based environment that sort of runs at the hypervisor level that people use for basic admin but VMware is trying to phase that out as most everything you can do with ESX's console can be done through ESXi's API's and the remote CLI. Only downside to the free version is certain API's are unavailable and if you need those features you may have to go to a paid version. Biggest problem in free esxi is that it lacks backup vcb api, so full image backups are almost impossible under free esxi host .. If you have some money to spend you can solve the backup problem with VMware's $500 entry level license. The license gives you the vCenter server software, which can manage 3 ESXi hosts and unlocks a number of capabilities, like cloning and offline migration. For around $1000 per server you can look at Veam or Vizioncore for backups. Overall you can't beat the price for the reliability and ease of use. Since ESXi is a bare metal hypervisior it doesn't have as many security vulnerabilities discovered which means less reboots of the host system. I have been using ESXi since 3.5 with around 8 ESXi servers now and 50 guests. I have not had a crash of the host ESXi host and the advanced capabilities (vMotion, Storage vMotion and Enhanced vMotion Capability (EVC)) have just worked, these do not work with the $500 license. Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, 27 Mar 2011, Jussi Hirvi wrote: KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. I have been using Xen with much success for several years, now with two CentOS 5.5 x86_64 Dom0's, hosting 29 (mixed Linux and Windows) and 30 (all Windows) guests respectively, using only packages from the distro along with the GPLPV drivers on the Windows guests (so it's Xen 3.1, not the latest). A couple of weeks ago I decided (on the first of these hosts) to give KVM a look, since I was able to take the machine down for a while. All guests use LVM volumes, and were unchanged between Xen and KVM (modulo pv drivers). The host is a Dell PE2900 with 24 GB memory and E5345 processors (8 cores). Bridged mode networking. What follows is obviously specific to my environment, so YMMV. The short story is that I plan to keep using KVM. It has been absolutely solid and without any issues whatsoever, and performance is significantly better than Xen in all areas that I have measured (and also in the feels good benchmark). Migration from Xen to KVM was almost trivially simple. The slightly longer story... First. With Xen I was never able to start more than 30 guests at one time with any success; the 31st guest always failed to boot or crashed during booting, no matter which guest I chose as the 31st. With KVM I chose to add more guests to see if it could be done, with the result that I now have 36 guests running simultaneously. Second. I was never able to keep a Windows 7 guest running under Xen for more than a few days at a time without a BSOD. I haven't seen a single crash under KVM. Third. I was never able to successfully complete a PXE-based installation under Xen. No problems with KVM. Fourth. My main work load consists of a series of builds of a package of about 1100 source files and about 500 KLOC's; all C and C++. Here are the elapsed times (min:sec) to build the package on a CentOS 5 guest (1 vcpu), each time with the guest being the only active guest (although the others were running). Sources come from NFS, and targets are written to NFS, with the host being the NFS server. * Xen HVM guest (no pv drivers): 29:30 * KVM guest, no virtio drivers: 23:52 * KVM guest, with virtio: 14:38 Fifth: I love being able to run top/iostat/etc on the host and see just what the hardware is really up to, and to be able to overcommit memory. Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, Mar 27, 2011 at 9:41 AM, Steve Thompson s...@vgersoft.com wrote: On Sun, 27 Mar 2011, Jussi Hirvi wrote: KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. I have been using Xen with much success for several years, now with two CentOS 5.5 x86_64 Dom0's, hosting 29 (mixed Linux and Windows) and 30 (all Windows) guests respectively, using only packages from the distro along with the GPLPV drivers on the Windows guests (so it's Xen 3.1, not the latest). A couple of weeks ago I decided (on the first of these hosts) to give KVM a look, since I was able to take the machine down for a while. All guests use LVM volumes, and were unchanged between Xen and KVM (modulo pv drivers). The host is a Dell PE2900 with 24 GB memory and E5345 processors (8 cores). Bridged mode networking. What follows is obviously specific to my environment, so YMMV. The short story is that I plan to keep using KVM. It has been absolutely solid and without any issues whatsoever, and performance is significantly better than Xen in all areas that I have measured (and also in the feels good benchmark). Migration from Xen to KVM was almost trivially simple. The slightly longer story... First. With Xen I was never able to start more than 30 guests at one time with any success; the 31st guest always failed to boot or crashed during booting, no matter which guest I chose as the 31st. With KVM I chose to add more guests to see if it could be done, with the result that I now have 36 guests running simultaneously. Second. I was never able to keep a Windows 7 guest running under Xen for more than a few days at a time without a BSOD. I haven't seen a single crash under KVM. Third. I was never able to successfully complete a PXE-based installation under Xen. No problems with KVM. How did you get the PXE working? I had real problems. Mind you, that was RHEL 5.4 and CentOS 5.4 for the server host, so it may have improved. And do you have widgets for setting up the necessary bridged networking? I left mine behind at a consulting gig, and haven't asked for copies of them. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, 27 Mar 2011, Nico Kadel-Garcia wrote: How did you get the PXE working? I already had a PXE server for physical hosts, so I just did a virt-install with the --pxe switch, and it worked first time. The MAC address was pre-defined and known to the DHCP server. I installed both Linux and Windows guests with PXE. And do you have widgets for setting up the necessary bridged networking? I edited the ifcfg-eth0 file on the host and added an ifcfg-br0, all by hand, and then rebooted. I didn't have to think about it again. /etc/sysconfig/network-scripts/ifcfg-eth0: DEVICE=eth0 HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br0 NM_CONTROLLED=0 /etc/sysconfig/network-scripts/ifcfg-br0: DEVICE=br0 TYPE=Bridge BOOTPROTO=static BROADCAST=braddr IPADDR=ipaddr NETMASK=netmask NETWORK=network ONBOOT=yes For each guest, something like this was used: interface type='bridge' mac address='52:54:00:1d:58:cf'/ source bridge='br0'/ model type='virtio'/ /interface Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
KVM was a dog in testing under CentOS and RHEL 5.x. The bridged networking has *NO* network configuration tool that understands how to set it up, you have to do it manually, and that's a deficit I've submitted upstream as an RFE. It may work well with CentOS and RHEL 6, i've not had a chance to test it. Back when I was searching for a suitable virtualization platform, I found no difference in performance between Xen and KVM. I liked both, but settled on KVM. ESXi back then was very limited in hardware support, so I never got to play with it much. People seem to like it. And it's true that bridged networking support in centos 5 requires that you set up it manually, but that's what led me to learn ifcfg scripts. It's so simple. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] updating without rebooting
At Sun, 27 Mar 2011 07:56:19 -0400 CentOS mailing list centos@centos.org wrote: On Fri, Mar 25, 2011 at 06:59:26AM -0400, Robert Heller wrote: Yes, you only *need* to reboot to pick up a new kernel. Unlike MS-Windows, none of the other updates *require* a reboot. Note: if Warning, though: there's a big difference between *need* and *should*. Oh, quite understood. glibc (or other widely used shared libraries) is updated it (they) won't get picked up unless *ALL* of the processes that use it (them) are restarted. Other changes may only take effect once a reboot occurs. In other cases you may end up with some programs using new setting and others using old settings (eg tzdata; if you've just had a new daylight-savings rule change then updating your tzdata rpms will cause newly started programs to use the new rules, but old programs to still use the old). It's not just limited to glibc. So, depending on the packages being updated, I normally _recommend_ a reboot. But, being a sensible OS, you can reboot at the time of your choosing, not at patch time :-) Yes, definately. -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
At Sun, 27 Mar 2011 13:36:02 +0100 (BST) CentOS mailing list centos@centos.org wrote: What makes you think CentOS is not willing to be commercially sponsored? (Or only work developing CentOS?) I would LOVE to be able to do CentOS as my only job. No one that we know of is willing to pay a full time salary for 1 or 2 or 3 people to develop CentOS. If they would pay for it, we would likely do it. They might be willing for us to let their current employees do some CentOS things ... but not willing to pay for CentOS development. Sorry, that was just my impression from previous posts. I guess I have that wrong. Maybe I am confusing the reluctance to take donations at the moment with commercial sponsorship. Thanks for correcting me. Couple of questions, then What is the average current time commitment per week, i.e. man hours that is currently volunteered by the core developers? What would that need to increase to, to significantly reduce release times (which I think was the overall goal)? What would the *market rate* be for the skills required? Just to give a rough figure to work with and shouldn't be related to any particular person's current day job. Thanks in advance, Ian. I expect that from a *corporate* POV the CentOS 'team' would work for maybe a man-day (a few update RPMs) to a man-week or three (point release, major update, etc.), and the rest of the time have little to do *with respect to CentOS* (not worth being on a full time payroll). Unlike Red Hat's staff who are working on fixing bugs, writing and testing back ports, etc. between updates and releases. And fielding support calls from paying customers, etc. And I expect Oracale and Novell have a similar work flow, except that they are piggybacking on Red Hat *for free*. I belive SL is maintained by a *research* organization, where the maintainers are like researchers or support staff, who are paid to do research or to administer research machines most of the time and then work the few hours (minor updates) or days/weeks (point release / major update, etc.) and the research organization gives them 'leave' to concentrate on the SL updates on an as needed basis (eg the SL maintanence is a *part* of their job description, but not all of it). The CentOS developers have full time 'day jobs' and can't work on CentOS while at their day jobs. It *might* make sense if the 'day jobs' the CentOS developers work for *also* were corporate sponsors of CentOS, but I suspect that is not going to happen for all sorts of reasons. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
On 03/27/2011 07:36 AM, Ian Murray wrote: What makes you think CentOS is not willing to be commercially sponsored? (Or only work developing CentOS?) I would LOVE to be able to do CentOS as my only job. No one that we know of is willing to pay a full time salary for 1 or 2 or 3 people to develop CentOS. If they would pay for it, we would likely do it. They might be willing for us to let their current employees do some CentOS things ... but not willing to pay for CentOS development. Sorry, that was just my impression from previous posts. I guess I have that wrong. Maybe I am confusing the reluctance to take donations at the moment with commercial sponsorship. Thanks for correcting me. Couple of questions, then What is the average current time commitment per week, i.e. man hours that is currently volunteered by the core developers? What would that need to increase to, to significantly reduce release times (which I think was the overall goal)? What would the *market rate* be for the skills required? Just to give a rough figure to work with and shouldn't be related to any particular person's current day job. What the CentOS project would be interested in (from a corporate provider) would be to hire people and allow them to do CentOS related things. We are not interested in being paid in addition to our current work, but making taking care of CentOS our only work. There are many things other than building packages that have to be maintained for making CentOS go. These include: 1. We have dozens (more than 100) servers that need to be maintained in tens of countries all world. These machines need to be updated and managed, including monitoring and taking corrective action for any services that go down. 2. We have to maintain lists of update mirrors, rsync mirrors, DVD mirrors and verify that the Dynamic DNS list for all these machines stay in sync when mirrors drop out or can be added back. 3. Manage the CentOS DNS services, the CentOS mail services, the mailing lists, the IRC Channels, and the main website. 4. We have to write/configure/change software to ensure our mirrors are up-to-date and control the release of updates. Our update system gives out GEO-IP relevant targets for download of ISOs and updates. 5. We have to research/answer bugs and maintain the bugs.centos.org website. There are many things that we could do if CentOS was our only responsibility. The cost to a corporate entity would be to hire one or more developers full time and designate them to working only on the project. If someone were willing to do that, we would be willing to listen. signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 3/27/11 4:57 AM, Jussi Hirvi wrote: Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). The free ESXi version is very good. While it doesn't support all the bells and whistles of the paid version, there are hardly any disadvantages compared to running the VMs on physical machines. You do have to use a windows box to manage it (with the advantage of being able to use the media on the client for the install source), but once the guest networking is up you can use whatever you would use for remote access to a physical box (vnc, ssh, X, freenx, etc.) directly to the guest - so the windows box doesn't have to be server-quality or available all the time. You might even be able to use the converter tool to migrate your running systems there - I've usually been able to do that with windows systems but couldn't get it to recognize my linux boxes with software raid (and didn't try any others since they aren't that hard to re-create). By the way, the current version of ESXi permits ssh without the 'unsupported' hack so you can copy images over scp or to/from an nfs mount, but it's not all that much faster than running the converter tool on another machine anyway. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
Biggest problem in free esxi is that it lacks backup vcb api, so full image backups are almost impossible under free esxi host .. Not true at all, I use the ghettovcb script in the console and it works fine. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
Fair enough. I have no complaints with the current volunteers. I was mainly just curious. Thanks for the reply. On Sat, Mar 26, 2011 at 8:46 PM, Ian Murray murra...@yahoo.co.uk wrote: There have been a number of recent conversations on the developer list and this list about CentOS. My initial thought was why not have CentOS and SL merge. Since they have different goals I can understand the reason not to. So my next question is, has no corporate entity offered to sponsor full time people to work on CentOS? It seems like a lot of companies use CentOS for various things. I can't believe no one is willing to help speed development by paying for people to build full time. Has this subject come up before? As far as I can tell, it is as simple as this:- The volunteers that create CentOS like things the way it is and it isn't likely to change. We seen it said a number of times, if we don't like it then go somewhere else. I suggest there might be room for another rebuild project that is open to commercially sponsored, i.e. somewhere else. This would n't be a 'rival' because its aims would be different. I'll be honest though, I don't realistically see enough money coming in to put people full-time onto it, though, when you consider market rate for the skills required. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
Dne 27.3.2011 17:33, Johnny Hughes napsal(a): What the CentOS project would be interested in (from a corporate provider) would be to hire people and allow them to do CentOS related things. We are not interested in being paid in addition to our current work, but making taking care of CentOS our only work. Well, Financial donations to project are suppressed by CentOS for a few years now. DH ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 03/27/2011 07:10 AM, Steve Thompson wrote: On Sun, 27 Mar 2011, Nico Kadel-Garcia wrote: How did you get the PXE working? I already had a PXE server for physical hosts, so I just did a virt-install with the --pxe switch, and it worked first time. The MAC address was pre-defined and known to the DHCP server. I installed both Linux and Windows guests with PXE. And do you have widgets for setting up the necessary bridged networking? I edited the ifcfg-eth0 file on the host and added an ifcfg-br0, all by hand, and then rebooted. I didn't have to think about it again. /etc/sysconfig/network-scripts/ifcfg-eth0: DEVICE=eth0 HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br0 NM_CONTROLLED=0 /etc/sysconfig/network-scripts/ifcfg-br0: DEVICE=br0 TYPE=Bridge BOOTPROTO=static BROADCAST=braddr IPADDR=ipaddr NETMASK=netmask NETWORK=network ONBOOT=yes For each guest, something like this was used: interface type='bridge' mac address='52:54:00:1d:58:cf'/ source bridge='br0'/ model type='virtio'/ /interface Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I setup a pxe boot server based on the instructions found here. https://help.ubuntu.com/community/PXEInstallMultiDistro https://help.ubuntu.com/community/PXEInstallMultiDistro It works fine for both physical machines and kvm VM's. My pxeboot server is running under ubuntu 10.04.2 in a kvm vm. If your pxeboot server needs to run under Redhat/CentOS, then you'll need to locate/install the packages mentioned on this web page, which should be pretty straight forward. Note the pxeboot server works fine for the install CDs and DVD's for all of the distributions that I've tried, Redhat, Fedora and Ubuntu. To boot live CDs I believe you need to convert the entire image into a tftp boot image which I think can be done using the fedora live cd creator tool (maybe it's in redhat now as well). I make the CD/DVD image available via NFS. On the PXE host I simply mount the ISO image under the NFS /export directory. Most of the install distributions provide the tftp images for pxeboot. On the redhat 6 CD you'll find vmlinuz and initrd.img in the /images/pxeboot directory. I just recently installed kvm virtualization on several redhat 6 hosts and one under Scientific Linux. The latest version of virt-manager (with recent updates installed) now supports setup of bridge devices from the GUI. You'll want to make sure to use virtio for performance and to disable the tso and gso tcp offload functions present in many ethernet cards which I do with the upstart script listed below. I am so far quite happy with kvm and happy to be able to run my management interface under linux instead of windows. #disable-tcpoffload - upstart script to modify tcp offload config for virtualization # description disable-tcpoffload start on started rc RUNLEVEL=[2345] stop on stopped rc RUNLEVEL=[!2345] task console output # env INIT_VERBOSE script set +e for interface in eth0 eth1 eth2 eth3; do /sbin/ethtool -K $interface gso off /sbin/ethtool -K $interface tso off done end script Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Corporate support for CentOS
What the CentOS project would be interested in (from a corporate provider) would be to hire people and allow them to do CentOS related things. We are not interested in being paid in addition to our current work, but making taking care of CentOS our only work. There are many things other than building packages that have to be maintained for making CentOS go. These include: 1. We have dozens (more than 100) servers that need to be maintained in tens of countries all world. These machines need to be updated and managed, including monitoring and taking corrective action for any services that go down. 2. We have to maintain lists of update mirrors, rsync mirrors, DVD mirrors and verify that the Dynamic DNS list for all these machines stay in sync when mirrors drop out or can be added back. 3. Manage the CentOS DNS services, the CentOS mail services, the mailing lists, the IRC Channels, and the main website. 4. We have to write/configure/change software to ensure our mirrors are up-to-date and control the release of updates. Our update system gives out GEO-IP relevant targets for download of ISOs and updates. 5. We have to research/answer bugs and maintain the bugs.centos.org website. There are many things that we could do if CentOS was our only responsibility. The cost to a corporate entity would be to hire one or more developers full time and designate them to working only on the project. If someone were willing to do that, we would be willing to listen. Right, so rather than money for CentOS to hire its own employees, you'd be looking for corporate sponsor to donate their employee time, i.e. full time person/people. I was more thinking of the former, but I think that was a long shot at best. Oh well hopefully someone might come forward. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 03/27/11 2:57 AM, Jussi Hirvi wrote: Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) one downside to ESXi, it does not support any sort of software raid. Normally ESX is used with a SAN, which provides all RAID functionality, or with NFS based storage (again, the NFS server providing the raid), but if you use it with direct attached storage, you had better have a supported hardware raid controller.Most server kit from the big vendors is fully supported (HP,Dell,IBM). You can boot ESXi from a small CF card, as once its booted, it doesn't touch the boot device at all. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
You can boot ESXi from a small CF card, as once its booted, it doesn't touch the boot device at all. Yes it does, there are cron jobs for config backups etc. How does it remember config changes in a non-stateless deployment? ~ # cat /var/spool/cron/crontabs/root #syntax : minute hour day month dayofweek command 01 01 * * * /sbin/tmpwatch.sh 01 * * * * /sbin/auto-backup.sh #first minute of every hour (run every hour) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] rssh / scponly
List, I am putting together a sftp server and would like to use a restrictive shell with a chroot jail. I was wondering what members of the list thought about rssh as opposed to scponly. Greg Ennis ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 27.03.2011 um 21:53 schrieb Gregory P. Ennis: List, I am putting together a sftp server and would like to use a restrictive shell with a chroot jail. I was wondering what members of the list thought about rssh as opposed to scponly. If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) That is certainly the best - scponly chroot is a hack IMO. Rainer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? the only mention of chroot in man sshd is the /var/empty/sshd dir used during preauthorization. I'd be very cautious on setting this up, or you could easily lose access to ssh shell sessions since ssh/scp/sftp are all so tightly coupled. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 Oh-dear. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, Mar 27, 2011 at 11:07 PM, Jure Pečar pega...@nerv.eu.org wrote: On Sun, 27 Mar 2011 10:42:36 -0500 Les Mikesell lesmikes...@gmail.com wrote: On 3/27/11 4:57 AM, Jussi Hirvi wrote: Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). It's interesting that nobody so far mentioned openVZ or its commercial version, Virtuozzo. It's different than all major virtualization players (it's OS level virtualization, not hw level), but that makes it the only viable option for things like mass web hosting solutions. Try it out and see if it fits your requirements. -- OpenVZ / Virtuzzo is a joke and shouldn't be used for production purposes. Especially not in mass web hosting solutions - that's just asking for trouble. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
It's interesting that nobody so far mentioned openVZ or its commercial version, Virtuozzo. It's different than all major virtualization players (it's OS level virtualization, not hw level), but that makes it the only viable option for things like mass web hosting solutions. Try it out and see if it fits your requirements. The two things that always comes to mind when I am considering a virtualization solution is extent of tool set/support, and the general acceptance of the technology. For those two reasons I nearly always implement VMware, it has a mature set of tools, a wide range of functionality, and sits at a very manageable price point. No true open source solution really comes close, you can approximate parts of it, but in the end it turns into a support issue that can pose a significant headache. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? the only mention of chroot in man sshd is the /var/empty/sshd dir used during preauthorization. I'd be very cautious on setting this up, or you could easily lose access to ssh shell sessions since ssh/scp/sftp are all so tightly coupled. ___ Thank you for your post, I have sure not been able to find the appropriate references in the man pages. I am running Centos 5.5 I did try putting a copy of /etc/ssh/ssh_config as /home/user/.ssh/config with the addition of : Subsystem sftpinternal-sftp Match User ftp ForceCommand internal-sftp ChrootDirectory /home/user But this did not work Any suggestions ??? Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, 27 Mar 2011 14:21:45 -0700 David Brian Chait dch...@invenda.com wrote: The two things that always comes to mind when I am considering a virtualization solution is extent of tool set/support, and the general acceptance of the technology. For those two reasons I nearly always implement VMware, it has a mature set of tools, a wide range of functionality, and sits at a very manageable price point. No true open source solution really comes close, you can approximate parts of it, but in the end it turns into a support issue that can pose a significant headache. True. I've deployed Virtuozzo for a large web hosting company and found it superior to vmware in about every aspect that mattered in a web hosting environment. OpenVZ on the other hand is about at the same level as xen, kvm and similiar opensource solutions. Well, not so much a solution, but a building block to help you build your own solution to your particular problem. -- Jure Pečar http://jure.pecar.org http://f5j.eu ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
I've deployed Virtuozzo for a large web hosting company and found it superior to vmware in about every aspect that mattered in a web hosting environment. Well.. eh. as you might know that virtuozzo/openvz does not provide kernel isolation. Mainly this means than one kernel exploit can provide full access to all openvz/virtuozzo containers. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Sun, Mar 27, 2011 at 11:50 PM, Eero Volotinen eero.voloti...@iki.fi wrote: I've deployed Virtuozzo for a large web hosting company and found it superior to vmware in about every aspect that mattered in a web hosting environment. Well.. eh. as you might know that virtuozzo/openvz does not provide kernel isolation. Mainly this means than one kernel exploit can provide full access to all openvz/virtuozzo containers. -- . and one overloaded containter can take down the whole server as well. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Mon, 28 Mar 2011 00:10:45 +0200 Rudi Ahlers r...@softdux.com wrote: On Sun, Mar 27, 2011 at 11:50 PM, Eero Volotinen eero.voloti...@iki.fi wrote: I've deployed Virtuozzo for a large web hosting company and found it superior to vmware in about every aspect that mattered in a web hosting environment. Well.. eh. as you might know that virtuozzo/openvz does not provide kernel isolation. Mainly this means than one kernel exploit can provide full access to all openvz/virtuozzo containers. The same is true for solutions like vmware. Just google for all the blue pill talks. It's a theoretical risk that is small enough to be irrelevant. . and one overloaded containter can take down the whole server as well. That's simply FUD. -- Jure Pečar http://jure.pecar.org http://f5j.eu ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 Oh-dear. --- Rainer, I am running Centos 5.5. which has OpenSSH_4.3p2. I guess this means I am back to using rssh or scponlyc. So far I have not been able to get either of these to work properly with chroot. Any suggestions ? Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
Well.. eh. as you might know that virtuozzo/openvz does not provide kernel isolation. Mainly this means than one kernel exploit can provide full access to all openvz/virtuozzo containers. The same is true for solutions like vmware. Just google for all the blue pill talks. It's a theoretical risk that is small enough to be irrelevant. WebServers running buggy php software provides (easy) way to execute local kernel exploits. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 28.03.2011 um 00:20 schrieb Gregory P. Ennis: I am running Centos 5.5. which has OpenSSH_4.3p2. I guess this means I am back to using rssh or scponlyc. So far I have not been able to get either of these to work properly with chroot. Any suggestions ? I haven't been using scponly for a long time. There are instructions on the scponly wiki on how to get the chroot working. They should work. (Basically, they involve setting-up a complete chroot-environment with /dev etc.) I suggest you consult their sourceforge resources for specific question or problems with the setup. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On Mon, 28 Mar 2011 01:26:38 +0300 Eero Volotinen eero.voloti...@iki.fi wrote: The same is true for solutions like vmware. Just google for all the blue pill talks. It's a theoretical risk that is small enough to be irrelevant. WebServers running buggy php software provides (easy) way to execute local kernel exploits. Yes and I've dealt with my share of them. None ever exploited some virtuozzo vulnerability. In fact many of them failed because they were run on a VPS. I trust the russian guys to know their way with C code and kernel fu. That's why many of the virtuozzo core parts are becoming part of the linus tree, cgroups being just one of the top of my head. See, there's even a nice wiki article: http://wiki.centos.org/HowTos/Virtualization/OpenVZ I understand that vmware has much stronger marketing machine, however that does not mean that their technology is somehow better. Their offer is a reasonable choice for many scenarios in IT, mass web hosting is unfortunately not one of them. As any competent admin will tell you, use the right tool for the right job. It's good to have choice. -- Jure Pečar http://jure.pecar.org http://f5j.eu ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 28.03.2011 um 00:20 schrieb Gregory P. Ennis: I am running Centos 5.5. which has OpenSSH_4.3p2. I guess this means I am back to using rssh or scponlyc. So far I have not been able to get either of these to work properly with chroot. Any suggestions ? I haven't been using scponly for a long time. There are instructions on the scponly wiki on how to get the chroot working. They should work. (Basically, they involve setting-up a complete chroot-environment with /dev etc.) I suggest you consult their sourceforge resources for specific question or problems with the setup. - Thanks for your help Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
2011/3/28 Rainer Duffner rai...@ultra-secure.de: Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 rhel / centos contains openssh with backported chroot: rpm -q --changelog openssh-server | grep chroot - minimize chroot patch to be compatible with upstream (#522141) - tiny change in chroot sftp capability into openssh-server solve ls speed problem (#440240) - add chroot sftp capability into openssh-server (#440240) - enable the subprocess in chroot to send messages to system log -- Eero -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
I understand that vmware has much stronger marketing machine, however that does not mean that their technology is somehow better. Their offer is a reasonable choice for many scenarios in IT, mass web hosting is unfortunately not one of them. As any competent admin will tell you, use the right tool for the right job. It's good to have choice. You can't honestly be comparing a 2.6b / year corporation that sells/develops enterprise scale products that serve nearly all of the Fortune 500 to a virtually unknown product sold by the maker of Parallels. They are not even close to being in the same league. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Verify tomcat config
lheck...@users.sourceforge.net wrote: I'm going to retire an old RHEL3 server and move the services to CentOS5. In particular, the web server is giving me a headache. On the old box, there's a hacked-up httpd/mod_jk/tomcat setup, and CentOS is perfect for the new box because the required components are included and the whole setup just works straight from installation. There seems to be surprisingly little documentation or how-tos on how to migrate from the above setup to httpd/mod_proxy_ajp/tomcat. I believe I have it working correctly on a test machine, but am looking for someone to look over the config to make sure it's correct and complete. The desired setup is: - httpd receives all requests - httpd processes all requests for static content - httpd passes all requests for dynamic content to tomcat Most examples I found seem to assume that all queries, including static, are pased on to tomcat. To implement the correct behaviour, I came up with this conf.d fragment: You might also want to ask this question on the Tomcat users mailing list, users-subscr...@tomcat.apache.org I hope you'll post the outcome of your research. -- Charles Polisher ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
On Sun, Mar 27, 2011 at 4:57 PM, John R Pierce pie...@hogranch.com wrote: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? the only mention of chroot in man sshd is the /var/empty/sshd dir used during preauthorization. Yeah, it's not supported until OpenSSH version 5.x. That upgrade will cause other surprises. Some colleagues ran headlong into it no longer reading .bashrc unless it's an actual login sessin, and became quite concerned when their local host-specific aliases were no longer available to their remote ssh commands. I'd be very cautious on setting this up, or you could easily lose access to ssh shell sessions since ssh/scp/sftp are all so tightly coupled. Yeah, I used to publish chroot cage tools for ssh-1, ssh-2, and OpenSSH years ago. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
David Brian Chait wrote: I understand that vmware has much stronger marketing machine, however that does not mean that their technology is somehow better. Their offer is a reasonable choice for many scenarios in IT, mass web hosting is unfortunately not one of them. As any competent admin will tell you, use the right tool for the right job. It's good to have choice. You can't honestly be comparing a 2.6b / year corporation that sells/develops enterprise scale products that serve nearly all of the Fortune 500 to a virtually unknown product sold by the maker of Parallels. They are not even close to being in the same league. Using that logic Micro$oft must be providing the best software on the planet ;-) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos attachment: rkampen.vcf___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Virtualization platform choice
On 03/27/2011 09:00 AM, Jerry Franz wrote: On 03/27/2011 02:57 AM, Jussi Hirvi wrote: Some may be bored with the subject - sorry... Still not decided about virtualization platform for my webhotel v2 (ns, mail, web servers, etc.). KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 will not be out in time for me - I guess KVM would be more mature in CentOS 6. Any experience with the free VMware vSphere Hypervisor?. (It was formerly known as VMware ESXi Single Server or free ESXi.) http://www.vmware.com/products/vsphere-hypervisor/overview.html I would need a tutorial about that... For example, does that run without a host OS? Can it be managed only via Win clients? Issues with CentOS 4/5 guests (all my systems are currently CentOS 4/5). I'm currently using Ubuntu Server 10.04-LTS as a host for KVM running CentOS5.5 guests I migrated from VMware Server 2. Works fine. A nice feature of current generation KVM is that you are supposed to be able to do live migration even without shared storage (although I haven't tested that yet). I wrote some custom scripts to allow me to take LVM snapshots for whole-image backups and I'm pretty happy with the who setup. The only corners I encountered were 1) A lack of documentation on how to configure bridging over bonded interfaces for the host server. It turned out to be fairly easy - just not clearly documented anyplace I could find. 2) The default configuration for rebooting/shutting dow the host server just 'shoots the guests in the head' rather than having them shutdown cleanly.:( You will want to write something to make sure they get shutdown properly instead. Once in a while I find it's useful to compromise just a little, so I use Scientific Linux 6 as the Host OS, and run a bunch of CentOS-5.5 Guest VMs. It all simply works. KVM has improved quite a bit, and the management tools work well. One thing that requires a bit of skill is getting bridging configured (which I simply did by hand from the RHEL-6 documentation). I'm happy with the result, and see no reason to replace the underlying SL-6 Host distro. SL-6 as the Host is rather slow to shut down gracefully and reboot, because it hibernates the Guest OSs, one at a time, rather than just killing them. Hibernation takes a while to write out to disk if you've assigned a lot of RAM to the Guests. Bootup has to restore the saved state, so that's a bit slow too. But it works very well. I use partitionable RAID arrays for the Guests, and assign a raw md device to each one rather than using the 'filesystem-in-a-file' method. It seems to be a bit faster, but there's a learning curve to understanding how it works. One thing I found a bit annoying is the very long time it takes for a Guest to format its filesystems on the RAID-6 md device assigned to it. That's mostly due to array checksum overhead. RAID-10 would be a *lot* faster but somewhat less robust ... you pick what's best for your own situation. Chuck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 rhel / centos contains openssh with backported chroot: rpm -q --changelog openssh-server | grep chroot - minimize chroot patch to be compatible with upstream (#522141) - tiny change in chroot sftp capability into openssh-server solve ls speed problem (#440240) - add chroot sftp capability into openssh-server (#440240) - enable the subprocess in chroot to send messages to system log -- Eero - Eero, That is very interesting. I found the same on my OpenSSH_4.3p2 system. I tried to use it, but could not make it work. Are you aware of any documentation or others that have made this work. Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
On Sun, Mar 27, 2011 at 10:12 PM, Gregory P. Ennis po...@pomec.net wrote: Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 rhel / centos contains openssh with backported chroot: rpm -q --changelog openssh-server | grep chroot - minimize chroot patch to be compatible with upstream (#522141) - tiny change in chroot sftp capability into openssh-server solve ls speed problem (#440240) - add chroot sftp capability into openssh-server (#440240) - enable the subprocess in chroot to send messages to system log Only by recompiling and backporting OpenSSH 5.x from RHEL 6, or by getting Centrify and their tools from www.centrify.com. Centrify also includes good tools for integration with Active Directory based authentication, very useful in a mixed environment where you don't have the political pull to get the AD administratiors in the same room to discuss how LDAP and Kerberos actually work and why Linux can cooperate with it. Being able to wave that magic commercially supported wand seems to help with those meetings, and it's actually a pretty good toolkit. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] fax software
It's been many years, but it seems that I have to receive a fax and might have to send one too. Is there a way to do this on CentOS 5.5? (Hope so.) tia. -- Anything is easy if you know how to do it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fax software
It's been many years, but it seems that I have to receive a fax and might have to send one too. Is there a way to do this on CentOS 5.5? (Hope so.) tia. - Tia We have a vsifax system on a SCO unix machine that we plan to move to Centos. I plan to evaluate efax that is opensource on Centos before we pay for the vsifax. You might try installing 'efax'. I would be interested in following your progress Greg Ennis ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fax software
On Sun, Mar 27, 2011 at 10:18:18PM -0500, Gregory P. Ennis wrote: We have a vsifax system on a SCO unix machine that we plan to move to Centos. I plan to evaluate efax that is opensource on Centos before we pay for the vsifax. You might try installing 'efax'. You may also wish to look into Hylafax; available from rpmforge. John -- Motivation is the art of getting people to do what you want them to do because they want to do it. -- Dwight D. Eisenhower (1890-1969), Thirty-fourth President of the USA pgpMUJAEx1L44.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Installing php-mcrypt
It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? For those of you that use Linux daily, these are very simple question, and for that please accept my apologies. Dr. Todd -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fax software
At Sun, 27 Mar 2011 22:41:10 -0400 CentOS mailing list centos@centos.org wrote: It's been many years, but it seems that I have to receive a fax and might have to send one too. Is there a way to do this on CentOS 5.5? (Hope so.) Presubably you also have an analog modem? Almost all analog modems also understand sending and receiving faxes. There are several packages that implement the host end of the fax protocol using an analog modem that supports faxing, including the CentOS base packages mgetty and mgetty-sendfax. There are also all-in-one printers that implement faxing, but these can function standalone -- that is the all-in-one can behave like a regular fax machine without using a host computer at all (the HP OfficeJets can do all of this from either their front panel or though their internal web interface). tia. -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
On Sun, 27 Mar 2011, Todd Cary wrote: It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? For those of you that use Linux daily, these are very simple question, and for that please accept my apologies. How about yum install php-mcrypt? Regards, -- Tom Diehl tdi...@rogueind.com Spamtrap address mtd...@rogueind.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? For those of you that use Linux daily, these are very simple question, and for that please accept my apologies. Dr. Todd -- Dr. Todd, Login to the root account Type in the following : yum search php-mcrypt you should get something like : Matched: php-mcrypt php-mcrypt.x86_64 : Standard PHP module provides mcrypt library support If this is what you want type in : yum install php-mycrypt Have Fun!!! Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rssh / scponly
On Sun, 27 Mar 2011, Nico Kadel-Garcia wrote: On Sun, Mar 27, 2011 at 10:12 PM, Gregory P. Ennis po...@pomec.net wrote: Am 27.03.2011 um 22:57 schrieb John R Pierce: On 03/27/11 1:03 PM, Rainer Duffner wrote: If you use sftp, it can be chroot'ed by default (see man-page). (In reasonably recent version of sshd) I gather thats a sshd somewhat newer than the one included in CentOS 5 ? I don't know. ;-) I only used it in FreeBSD - but it's included there since at least 7.2. That was released in May 2009. OpenSSH 5.1p1 Looking, sshd in my latest CentOS shows v 4.6p2 rhel / centos contains openssh with backported chroot: rpm -q --changelog openssh-server | grep chroot - minimize chroot patch to be compatible with upstream (#522141) - tiny change in chroot sftp capability into openssh-server solve ls speed problem (#440240) - add chroot sftp capability into openssh-server (#440240) - enable the subprocess in chroot to send messages to system log Only by recompiling and backporting OpenSSH 5.x from RHEL 6, or by getting Centrify and their tools from www.centrify.com. Centrify also includes good tools for integration with Active Directory based authentication, very useful in a mixed environment where you don't have the political pull to get the AD administratiors in the same room to discuss how LDAP and Kerberos actually work and why Linux can cooperate with it. Being able to wave that magic commercially supported wand seems to help with those meetings, and it's actually a pretty good toolkit. The above appears to be wrong wrt to chrooting sftp on C5. According to https://bugzilla.redhat.com/show_bug.cgi?id=440240 and http://rhn.redhat.com/errata/RHSA-2009-1287.html the ability to chroot was backported into rhel/centos 5 back in 2009-09-02. In addition sshd_config(5) says the following: Subsystem Configures an external subsystem (e.g., file transfer daemon). Arguments should be a subsystem name and a command (with optional arguments) to execute upon subsystem request. The command sftp-server(8) implements the sftp file transfer subsystem. Alternately the name internal-sftp implements an in-process sftp server. This may simplify configurations using ChrootDirectory to force a different filesystem root on clients. By default no subsystems are defined. Note that this option applies to protocol version 2 only. http://undeadly.org/cgi?action=articlesid=20080220110039 might be useful in setting this up. Of course I could be wrong since I have not tried this yet but it is on my short list for this week. Regards, -- Tom Diehl tdi...@rogueind.com Spamtrap address mtd...@rogueind.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fax software
On Sun, Mar 27, 2011 at 10:41 PM, ken geb...@mousecar.com wrote: It's been many years, but it seems that I have to receive a fax and might have to send one too. Is there a way to do this on CentOS 5.5? (Hope so.) tia. There are plenty. mgetty is built-in. HylaFAX, written by Sam Leffler, who created TIFF and was one of the core authors of BSD, is still in popular and commercial use: It Just Works(tm). [I wrote the SunOS port of it years and years back, and broke down laughing at a job interview in England when the company said oh, yes, we use some very old fax/modem software you'll need to deal with. It's called 'HylaFAX'. The viewfax tool from mgetty still remains the best tool for viewing the special tiffg3 files used for sending and receiving faxes, and the mgetty voice tools can help HylaFAX or mgetty handle voice messages too. But if you just install HylaFAX from RPMforge, it should Just Work(tm). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
On 3/27/2011 8:48 PM, Tom Diehl wrote: On Sun, 27 Mar 2011, Todd Cary wrote: It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? For those of you that use Linux daily, these are very simple question, and for that please accept my apologies. How about yum install php-mcrypt? Regards, Tom - Only of the many things I forgot is where or not you have to specify the version in the yum command. From what you indicated, I do not. Many thanks Todd -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
On 3/27/2011 8:48 PM, Gregory P. Ennis wrote: It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? For those of you that use Linux daily, these are very simple question, and for that please accept my apologies. Dr. Todd -- Dr. Todd, Login to the root account Type in the following : yum search php-mcrypt you should get something like : Matched: php-mcrypt php-mcrypt.x86_64 : Standard PHP module provides mcrypt library support If this is what you want type in : yum install php-mycrypt Have Fun!!! Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Greg - I remember using rpm to do many of the same things as rpm. What factors should one consider in deciding whether to use rpm or yum? For the last 6 years I used yum update to keep my 4.1 updated (all the way to 4.8). [That was about all I ever had to do to the server - except when the power went off longer than the UPS could keep it up if I was not home - then I had to boot it up :-)] -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] fax software
On 03/27/11 8:36 PM, Robert Heller wrote: There are also all-in-one printers that implement faxing, but these can function standalone -- that is the all-in-one can behave like a regular fax machine without using a host computer at all (the HP OfficeJets can do all of this from either their front panel or though their internal web interface). indeed. we have a Brother MFC that was inexpensive at Costco, its a standalone fax, copier, a networked BW laser printer, and a networked color scanner.also has a sheet feeder. supplies for the Brother BW laser printers are far cheaper per page than HP lasers or any inkjet devices. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
On 03/27/11 9:17 PM, Todd Cary wrote: I remember using rpm to do many of the same things as rpm. What factors should one consider in deciding whether to use rpm or yum? rpm installs .rpm files. yum finds rpm files on configured repositories, downloads them, checks their dependencies, and asks if its OK to get those too, then runs rpm to install all the packages. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing php-mcrypt
On 28/03/11 2:33 PM, Todd Cary wrote: It has been 6 years since I set up my Linux server and have hardly had to touch it in all of those years other than running yum update, so I ma rusty in some of the fine details (especially at 72). That's not old, I've been corresponding with a 78 year-old crypto freak on another mailing list. ;) I located a source for the php-mcrypt rpm (php-mcrypt-5.1.6-15.el5.centos.1.i386.rpm), however, isn't there an easier method to get and install the appropriate rpm - other than downloading it then running rpm? And when should I use yum rather than rpm? Use Yum whenever possible. One thing that is worth mentioning, though, is that php-mcrypt 5.1.x is a little old and a lot of things which require it (e.g. a CMS like WordPress) need 5.2 or above and higher versions of PHP. Fortunately these are all currently available in the CentOS Testing repository. This is where I grabbed my versions from to get WordPress to behave (i.e. recognise timezones). My /etc/yum.repos.d/Centos-Testing.repo file contains: [c5-testing] name=CentOS-5 Testing baseurl=http://dev.centos.org/centos/$releasever/testing/$basearch/ enabled=1 gpgcheck=1 gpgkey=http://dev.centos.org/centos/RPM-GPG-KEY-CentOS-testing priority=5 includepkgs=php* If you make this change you should also add exclude=php* to the end of the [base] and [updates] sections of the Centos-Base.repo file. Only include the priority line if you have that set in your other .repo files (everything in my Centos-Base.repo file has a priority of 1, except for [contrib] which has a priority of 2). There's a very good guide on how to do this properly here: http://wiki.centos.org/HowTos/PHP_5.1_To_5.2?highlight=%28php%29 I recommend following it because the chances are that your need for installing php-mcrypt in the first place is for something that needs at least version 5.2. Regards, Ben signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
