[CentOS-announce] CESA-2014:1255 Moderate CentOS 5 krb5 Security Update
CentOS Errata and Security Advisory 2014:1255 Moderate
Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-1255.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
i386:
bdedf72c20131241fe22c3377a2687514bc15a1b0c8cfa0b2437d5c95ddca9f7
krb5-devel-1.6.1-80.el5_11.i386.rpm
9fffda97beadefb7c10e1db2aaf1d78e6d868a1b8fc72b2b0d985deb4b1eb0f3
krb5-libs-1.6.1-80.el5_11.i386.rpm
33edfc1b5fec4efceffc6d31eb5b049c9f325ea2e2ec5899bf72bdae8b528e32
krb5-server-1.6.1-80.el5_11.i386.rpm
92d20a98d3f3f7688b960edc2fbaec43991761dbebbd7e7a2c52ba79ba2f8a49
krb5-server-ldap-1.6.1-80.el5_11.i386.rpm
b43c346face17ce142faf5be78ec3af611a9a946321720e24ef5e6b8b6d40683
krb5-workstation-1.6.1-80.el5_11.i386.rpm
x86_64:
bdedf72c20131241fe22c3377a2687514bc15a1b0c8cfa0b2437d5c95ddca9f7
krb5-devel-1.6.1-80.el5_11.i386.rpm
8299528ca4f6fb42a2d0eb2cf0e40d31c090af54344bc61c731bd123d0ff58d2
krb5-devel-1.6.1-80.el5_11.x86_64.rpm
9fffda97beadefb7c10e1db2aaf1d78e6d868a1b8fc72b2b0d985deb4b1eb0f3
krb5-libs-1.6.1-80.el5_11.i386.rpm
fc2d06194339c7a5e1f860a4054ac4e1c18ea224464357c76a5265c5bf3af1e4
krb5-libs-1.6.1-80.el5_11.x86_64.rpm
e89f87c8ad03fcdf36373d4f7bb1162abc7c551b9ed1de95721042ac2dc6dc39
krb5-server-1.6.1-80.el5_11.x86_64.rpm
a868a052676af36fde1b3523696977459d012cfabe1cd5458b3b49fc7de668bd
krb5-server-ldap-1.6.1-80.el5_11.x86_64.rpm
7126bc94f693ccdda6da0242d67ce2850492187155a921c3fe9892e40136f017
krb5-workstation-1.6.1-80.el5_11.x86_64.rpm
Source:
1804a362842e1d343d6ec9805831cd475eee88236087d5078c2b8f85477a5f8b
krb5-1.6.1-80.el5_11.src.rpm
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[CentOS-announce] CEEA-2014:1393 CentOS 6 be2iscsi Enhancement Update
CentOS Errata and Enhancement Advisory 2014:1393
Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1393.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
i386:
d0d7eaa262746e1760fd3d533b9fa82684ef87bb344b38422946f6b1b81c69c1
kmod-be2iscsi-10.2.273.0r-1.el6_5.i686.rpm
x86_64:
c066e98a14fc3db9b8237d19d3ffef9a62bcb8e063d6f996b166040f2a047bd2
kmod-be2iscsi-10.2.273.0r-1.el6_5.x86_64.rpm
Source:
6d708190df4651c157dd173748290b83bb624071c37e0602540e04a72696d085
be2iscsi-10.2.273.0r-1.el6_5.src.rpm
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CentOS Project { http://www.centos.org/ }
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[CentOS-announce] CESA-2014:1397 Important CentOS 7 rsyslog Security Update
CentOS Errata and Security Advisory 2014:1397 Important
Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-1397.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
x86_64:
948575ad1feeb02cbe239668584e1b84268e3bec81215d02d5d06cea0b8f533c
rsyslog-7.4.7-7.el7_0.x86_64.rpm
c7e99647faec3af85a3d174a7aeac248a1d8d2c80410b6676049fe221188265a
rsyslog-crypto-7.4.7-7.el7_0.x86_64.rpm
66be2ec9a2b8d0fa79960c38866ef7562ac59cde6717853eac0e140e320ffba0
rsyslog-doc-7.4.7-7.el7_0.x86_64.rpm
9a74dfc032f6946fa9bca1a8c7af4188c2a937ce04831ace8bb12bf84bd9e32c
rsyslog-elasticsearch-7.4.7-7.el7_0.x86_64.rpm
805fb5b2aebd9a88028e496d49695918b8f4b5dc6d07b23babb4619b1c09a8b0
rsyslog-gnutls-7.4.7-7.el7_0.x86_64.rpm
ef6c468d97fd791b0313a0755f8403355c5437b89aacf2a23c3e8e71d64883e8
rsyslog-gssapi-7.4.7-7.el7_0.x86_64.rpm
3ea324bf1b7274030b08eaf298345e31f462879ee2379756a32f13f505a59c97
rsyslog-libdbi-7.4.7-7.el7_0.x86_64.rpm
45ddb5e5d772077101b12edaea5282a6d17bdfb2b2bfd62c2f404fcf0782cdcd
rsyslog-mmaudit-7.4.7-7.el7_0.x86_64.rpm
207a69be5ab3237c5fe6eba4811b6cadf6d7cd3a91af02cac1f2153c66257c9c
rsyslog-mmjsonparse-7.4.7-7.el7_0.x86_64.rpm
dfcff07a291887e0666402cf33a76399270dcb8f9ea1fbbf752951425207ff20
rsyslog-mmnormalize-7.4.7-7.el7_0.x86_64.rpm
eedb2881ec82be8560681310fc6a7d67b6bbd6556bf45bf3a58b53b38c681f77
rsyslog-mmsnmptrapd-7.4.7-7.el7_0.x86_64.rpm
6fabf1ceff6963dfc1fd0f9f379c25e33ca913776270e9cd067414ca92470738
rsyslog-mysql-7.4.7-7.el7_0.x86_64.rpm
d1e5dceec4084daa457a39cd2e60526ae5be249b695344a21be7ed8dea0add65
rsyslog-pgsql-7.4.7-7.el7_0.x86_64.rpm
5732b9cd681a759410d93815d77c42f039bb087907be8164055a7d5680039966
rsyslog-relp-7.4.7-7.el7_0.x86_64.rpm
5748ac2fa283b397c3be55d7f21a92656f14d656271ceaeaee494d28
rsyslog-snmp-7.4.7-7.el7_0.x86_64.rpm
771e03bb4a37817aa4e417f47a689b0712c115b4263d7df1079dee3376080028
rsyslog-udpspoof-7.4.7-7.el7_0.x86_64.rpm
Source:
250ed2cfdecd54d606fe2a8c9139c7e0f634bf4a6d3fc2f32b1a198191fe5573
rsyslog-7.4.7-7.el7_0.src.rpm
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Re: [CentOS-virt] problem with xen virtulization on centos 6.5
Hi buddy. I installed centos 5.10 instead of 6.5 version and the problem resolved. :D On 9/9/14, George Dunlap dunl...@umich.edu wrote: On Fri, Sep 5, 2014 at 8:50 AM, moslem mosadegh m.mosadeg...@gmail.com wrote: I have a .img file and it's config xml file that i downloaded from a website. I installed xen 4.2 on my centos 6.5. when i want to create a new domain for my .img file with this xml file with this command: virsh create wiki.xml. that give me an error message:unkonw os type xen. anyone know what's the problem? It might help if you attach the xml file. :-) Was this xml designed specifically to run under Xen? -George ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-es] Problema con Samba como PDC en CentOS 6.5 usando plantilla en Proxmox 3.2
Saludos listeros; Tengo un Centos 6.5 virtualizado en Proxmox 3.2, he configurado en samba como PDC utilizando la opcion de maquina virtual y trabaja bien, pero con la misma configuración no me trabaja cuando utilizo la opción de contenedor o plantilla. Me imagino que es por problemas de configuración de red: O sea mi duda si Samba como PDC puede comfigurarse en una red virtual (venet) -- Convocatorias abiertas: *- Congreso Internacional de Desarrollo Local 4 al 7 de noviembre de 2014: http://eventos.uo.edu.cu/?p=417 Nuestro evento internacional de mayor experiencia: *- 21 Conferencia de Química: 3 al 5 de diciembre de 2014 http://ciq.eventos.uo.edu.cu/ -- ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
[CentOS] Recommended way of handling iptables firewall in CentOS?
Hi, I'm planning to use CentOS 6.x on a handful of LAN servers. So far I've been using Slackware64 14.0 and 14.1 for the job. I wonder what's the orthodox/recommended way of configuring and iptables firewall with CentOS. I understand there's the system-config-securitylevel-tui NCurses interface which allows defining a basic set of rules. But what about the handful of more advanced rules I have to configure? Here's an example of an /etc/rc.d/rc.firewall script that I might use with Slackware. It contains mostly basic rules, and a couple of more advanced rules, one to limit SSH access, the other one to redirect HTTP traffic to Squid. If I want to copy my actual firewall configuration to CentOS, what would be the recommended way? I started from a bare bones minimal CentOS 6.5 installation, so system-config-securitylevel-tui is not even installed. Is it a good idea to try to configure /etc/sysconfig/iptables by hand? What do you suggest? Cheers, Niki -- Microlinux - Solutions informatiques 100% Linux et logiciels libres 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommended way of handling iptables firewall in CentOS?
Le 13/10/2014 11:11, Reindl Harald a écrit : just write a bash script which resets and configures iptables with the iptables command and at the end of the script call /sbin/service iptables save which writes the current rules to /etc/sysconfig/iptables and so at boot the rules get loaded atomically Thanks very much! I followed your advice, and here's a first version of a firewall script for a LAN server: https://github.com/kikinovak/centos/blob/master/6.x/firewall/firewall-lan.sh Cheers, Niki -- Microlinux - Solutions informatiques 100% Linux et logiciels libres 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 答复: turn bootable USB into bootable iso image
On 10/11/2014 06:39 AM, 沈焕标 wrote: I am sorry for my misunderstanding. And I thing you should try the command dd to create an ISO file. For example: dd if=/dev/sdX of=/xxx/xxx/xxx.iso... I hope you will make it.. Hi, I have already tried that - it does not work. Best wishes --- ---Bill Shen 发件人: aravind Jmailto:aravindkumar@gmail.com 发送时间: 2014/10/11 17:32 收件人: CentOS mailing listmailto:centos@centos.org 主题: Re: [CentOS] turn bootable USB into bootable iso image On Oct 10, 2014 7:12 PM, Steve Clark scl...@netwolves.com wrote: Hello List I have a Bootable USB stick that we use to Boot our servers and then install CentOS, PostgreSQL and our SW thru a Kickstart script. It works like a charm but now we are thinking of going Virtual and prepping Virtual CentOS servers under VMware ESXi. However, to have the same Boot and Install functionality I see no other solution than Booting a VMware machine from an ISO. So, what I would like to do is to take the Bootable USB and make it into an ISO. Any ideas? Hi, Not sure whether the following will work, but just a thought. Create an .img file from the usb by doing a 'dd' from usb to .img file. Then attach the .img file to the vm as a disk and then boot the vm from the disk image to start regular kickstart installation. Thanks Regards, Aravind ___ 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 -- Stephen Clark *NetWolves Managed Services, LLC.* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On 10/11/2014 08:07 AM, Marcelo Ricardo Leitner wrote: On 09-10-2014 14:13, Les Mikesell wrote: On Thu, Oct 9, 2014 at 11:51 AM, Steve Clark scl...@netwolves.com wrote: What exactly does that mean - multi seat environments? http://www.freedesktop.org/wiki/Software/systemd/multiseat/ Ok I read the information. So as I understand it you are going have a computer that has multiple graphics cards with multiple keyboards and multiple mice divided into seats. Really? Where do I buy this computer? It is much simpler to run remote X sessions over a network for multiuser access and probably not much more expensive if you use older PCs as terminals. You do have to boot something, but x2go or You think that nobody on that project thought about this before? freenx/NX are cross platform and have great remote performance. I'm surprised no one has made a mini-linux distro that boots straight to x2go for this purpose, but if they have, I haven't found it. It's not just remote X sessions. You want at least USB and audio redirection and also a decent 3D performance. We currently do that using spice for VMs, I don't know how feasible it is to run it on a real hardware. There are some good pro's on this setup: - this installation is physically simpler than having 4 full computers as it requires 1/4 of the wall plugs and network points - no single point of failure (as in: 4 seats down is okay), if you compare with ones using x2go and similar (application server) - easily scalable: need more seats? buy 1 computer more, you have +4 seats, and you're good. No server needs to be re-evaluated. - easier to maintain, as you maintain 1/4 of the systems you would otherwise. - very cost effective with commodity hardware, that everyone knows how to deal with. - vendor independent And probably many others that I forgot :) Not saying it's the best, though. Just saying that yes this is a good project that is well plotted and has its audience. Marcelo Yes but you have to be physically close to the main cpu. What about distractions from other people sitting right next to you? Playing music, etc. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Stephen Clark *NetWolves Managed Services, LLC.* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] turn bootable USB into bootable iso image
On 10/11/2014 05:32 AM, aravind J wrote: On Oct 10, 2014 7:12 PM, Steve Clark scl...@netwolves.com wrote: Hello List I have a Bootable USB stick that we use to Boot our servers and then install CentOS, PostgreSQL and our SW thru a Kickstart script. It works like a charm but now we are thinking of going Virtual and prepping Virtual CentOS servers under VMware ESXi. However, to have the same Boot and Install functionality I see no other solution than Booting a VMware machine from an ISO. So, what I would like to do is to take the Bootable USB and make it into an ISO. Any ideas? Hi, Not sure whether the following will work, but just a thought. Create an .img file from the usb by doing a 'dd' from usb to .img file. Then attach the .img file to the vm as a disk and then boot the vm from the disk image to start regular kickstart installation. Thanks Regards, Aravind ___ Hi Aravind, That is an interesting idea. Thanks, -- Stephen Clark *NetWolves Managed Services, LLC.* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommended way of handling iptables firewall in CentOS?
On Mon, 2014-10-13 at 12:30 +0200, Niki Kovacs wrote: Le 13/10/2014 11:11, Reindl Harald a écrit : just write a bash script which resets and configures iptables with the iptables command and at the end of the script call /sbin/service iptables save which writes the current rules to /etc/sysconfig/iptables and so at boot the rules get loaded atomically Thanks very much! I followed your advice, and here's a first version of a firewall script for a LAN server: https://github.com/kikinovak/centos/blob/master/6.x/firewall/firewall-lan.sh Cheers, Niki Of course, if you are interested in something that will help you to organize your rules, there is always Shorewall ( Shoreline Firewall ) which I have used for years and found very effective and time-saving. -- Ron Loftin relof...@twcny.rr.com God, root, what is difference ? Piter from UserFriendly ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommended way of handling iptables firewall in CentOS?
Le 13/10/2014 13:36, Ron Loftin a écrit : Of course, if you are interested in something that will help you to organize your rules, there is always Shorewall ( Shoreline Firewall ) which I have used for years and found very effective and time-saving. Thanks for the suggestion, I'll look into it. Though I admit having a clear preference for the bare bones approach to all things Linux. My favorite configuration tool is Vi :o) Cheers, Niki -- Microlinux - Solutions informatiques 100% Linux et logiciels libres 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] turn bootable USB into bootable iso image
On 10/13/2014 07:19 AM, Steve Clark wrote: On 10/11/2014 05:32 AM, aravind J wrote: On Oct 10, 2014 7:12 PM, Steve Clark scl...@netwolves.com wrote: So, what I would like to do is to take the Bootable USB and make it into an ISO. Any ideas? Create an .img file from the usb by doing a 'dd' from usb to .img file. Then attach the .img file to the vm as a disk and then boot the vm from the disk image to start regular kickstart installation. have you tried something like k3b? plug the stick into a machine and the create an iso rather than burn a disk from the image. I'd suggest the 'right' way is to dig into the USB drive process, find out what all its doing to get the install going the way you want/need and then convert it into a pxe/net install. then it should work for both vms and physical hardware and you'll have working knowledge to change/update it and have more available images. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] machine check exception
Hello, Today, I got the below error server Console, Cpu 1:machine check exception Tcs c7f3d370acf17a ADDR 112d6c00040288 MISC c453176c00040200 This is not a softeware problem Run through mcelog ascii to decode and contact your hW vendor Kernel panic not syncing :machine check Can anybody please provide the meaning of this. How can I pull the logs from server ? Still not able to understand the exact cause of it. Please help. Thanks and Regards, Shital ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On 10/13/2014 7:17 AM, Steve Clark wrote: Yes but you have to be physically close to the main cpu. What about distractions from other people sitting right next to you? Playing music, etc. That's not all that different from modern cube farms. You learn to tolerate or ignore other people, or more ideally, collaborate well with your closest co-workers. Where I work, there are people sitting side-by-side at folding tables (business has picked up faster than physical facilities can keep up with). In our case, they're all using zero clients and virtual desktops. However, it's exactly the kind of setup where a multi-seat computer might make sense for other companies or schools that don't have our virtualization expertise. -- -Chris ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] centos7 livecd yum problem
I started to install centos7 using a livecd image. After booting the cd I tried a yum install mc which failed. I then tried yum update and got the following output. [liveuser@localhost ~]$ sudo yum update Loaded plugins: fastestmirror, langpacks Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7arch=x86_64repo=os error was 14: curl#6 - Could not resolve host: mirrorlist.centos.org; Unknown error One of the configured repositories failed (Unknown), and yum doesn't have enough cached data to continue. At this point the only safe thing yum can do is fail. There are a few ways to work fix this: 1. Contact the upstream for the repository and get them to fix the problem. 2. Reconfigure the baseurl/etc. for the repository, to point to a working upstream. This is most often useful if you are using a newer distribution release than is supported by the repository (and the packages for the previous distribution release still work). 3. Disable the repository, so yum won't use it by default. Yum will then just ignore the repository until you permanently enable it again or use --enablerepo for temporary usage: yum-config-manager --disable repoid 4. Configure the failing repository to be skipped, if it is unavailable. Note that yum will try to contact the repo. when it runs most commands, so will have to try and fail each time (and thus. yum will be be much slower). If it is a very temporary problem though, this is often a nice compromise: yum-config-manager --save --setopt=repoid.skip_if_unavailable=true Cannot find a valid baseurl for repo: base/7/x86_64 I looked at thgeCentos-Base. repo from the live cd and it looks the same as the repo in centos6.5. I have no idea what to do next. This is my attempt to do step 1. above because I don't know how to do step 2. Any help would be appreciated on using the liveCD. Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] centos7 livecd yum problem
On Mon, 13 Oct 2014 10:35:47 -0700 Don Vogt wrote: I started to install centos7 using a livecd image. After booting the cd I tried a yum install mc which failed. I then tried yum update and got the following output. Are you sure that your newly installed machine is actually online? What does ping google.com get you? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On Mon, Oct 13, 2014 at 9:01 AM, Chris Beattie cbeat...@geninfo.com wrote: On 10/13/2014 7:17 AM, Steve Clark wrote: Yes but you have to be physically close to the main cpu. What about distractions from other people sitting right next to you? Playing music, etc. That's not all that different from modern cube farms. You learn to tolerate or ignore other people, or more ideally, collaborate well with your closest co-workers. Where I work, there are people sitting side-by-side at folding tables (business has picked up faster than physical facilities can keep up with). In our case, they're all using zero clients and virtual desktops. However, it's exactly the kind of setup where a multi-seat computer might make sense for other companies or schools that don't have our virtualization expertise. Being able to grab your existing desktop remotely with all open windows and long-running programs intact is a big plus, though - and you get that for free with NX or x2go. Can you connect remotely to your VM host some other way if you aren't at the special desktop? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On Mon, October 13, 2014 1:50 pm, Les Mikesell wrote: On Mon, Oct 13, 2014 at 9:01 AM, Chris Beattie cbeat...@geninfo.com wrote: On 10/13/2014 7:17 AM, Steve Clark wrote: Yes but you have to be physically close to the main cpu. What about distractions from other people sitting right next to you? Playing music, etc. That's not all that different from modern cube farms. You learn to tolerate or ignore other people, or more ideally, collaborate well with your closest co-workers. Where I work, there are people sitting side-by-side at folding tables (business has picked up faster than physical facilities can keep up with). In our case, they're all using zero clients and virtual desktops. However, it's exactly the kind of setup where a multi-seat computer might make sense for other companies or schools that don't have our virtualization expertise. Being able to grab your existing desktop remotely with all open windows and long-running programs intact is a big plus, though - and you get that for free with NX or x2go. Can you connect remotely to your VM host some other way if you aren't at the special desktop? How much different is that from VNC? Just curious. Valeri Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On Mon, Oct 13, 2014 at 2:03 PM, Valeri Galtsev galt...@kicp.uchicago.edu wrote: Being able to grab your existing desktop remotely with all open windows and long-running programs intact is a big plus, though - and you get that for free with NX or x2go. Can you connect remotely to your VM host some other way if you aren't at the special desktop? How much different is that from VNC? Just curious. VNC just does a basic bit-copy of the screen for the remote side so it is not particularly efficient, although it might be better if you are mirroring a real console instead of running a virtual session set up by vncserver. NX/x2go have a full proxy/stub X server and client at both ends with tunable caching/compressiion on the remote side.so things like font rendering and block moves for scrolling are much faster. X2go also can map audio/drives/printers if you want. Both are packaged and fairly easy to try on CentOS 6. On 7, only x2go is available and it has a problem with the 3d requirement of Gnome3 so you have to use KDE or install MATE from EPEL. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On Mon, October 13, 2014 1:50 pm, Les Mikesell wrote: Being able to grab your existing desktop remotely with all open windows and long-running programs intact is a big plus, though - and you get that for free with NX or x2go. Can you connect remotely to your VM host some other way if you aren't at the special desktop? I didn't mean to imply that you use a multi-seat computer to get to a desktop served by a remote machine, though you could certainly do that if you wanted. Everyone still needs a machine to function as an endpoint for the remote desktop to be delivered to, though. You use a multi-seat computer when you don't have enough computers to give everyone their own machine. Like William Gibson said, The future is already here - it's just not evenly distributed. I have enough computers that I could make furniture out of them, but I'm sure there's some cash-strapped school district using donated hardware that would jump at the chance to have their computer lab serve ten students at a time instead of five. -- -Chris ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Hiding a network printer
I want to hide a printer that's connected to a Centos 6 printer server to prevent it showing up on some of the other computers on the local network. Using system-config-printer, putting the IP address of the computer that I want to hide the printer from into the Access Control window for that printer doesn't work since it apparently wants a user name, not an IP address. How can I specify that the printer can be seen only by certain IP addresses but not others? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On 10/13/2014 2:28 PM, Frank Cox wrote: I want to hide a printer that's connected to a Centos 6 printer server to prevent it showing up on some of the other computers on the local network. Using system-config-printer, putting the IP address of the computer that I want to hide the printer from into the Access Control window for that printer doesn't work since it apparently wants a user name, not an IP address. How can I specify that the printer can be seen only by certain IP addresses but not others? what protocol(s) is this print sharing using? -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On Mon, Oct 13, 2014 at 03:28:33PM -0600, Frank Cox wrote: I want to hide a printer that's connected to a Centos 6 printer server to prevent it showing up on some of the other computers on the local network. Using system-config-printer, putting the IP address of the computer that I want to hide the printer from into the Access Control window for that printer doesn't work since it apparently wants a user name, not an IP address. How can I specify that the printer can be seen only by certain IP addresses but not others? you can choose to share it or not, but that's probabaly all or nuttin. If you're smarter than I am (not to say, more ambitious) you could probably add some firewall rules to do the trick. -- Fred Smith -- fre...@fcshome.stoneham.ma.us - I can do all things through Christ who strengthens me. -- Philippians 4:13 --- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On Mon, 13 Oct 2014 14:37:25 -0700 John R Pierce wrote: what protocol(s) is this print sharing using? Whatever the sharing - enabled checkbox gives me. The printer is connected to the print server with a USB cable so there's nothing special on that end. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On 10/13/2014 2:53 PM, Frank Cox wrote: On Mon, 13 Oct 2014 14:37:25 -0700 John R Pierce wrote: what protocol(s) is this print sharing using? Whatever the sharing - enabled checkbox gives me. The printer is connected to the print server with a USB cable so there's nothing special on that end. not having ever used anything on linux thats enabled with a checkbox, its hard to say. are the printer clients MS Windows or Unix/Linux ? If they are Linux do they connect with CUPS or LPR or what? -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On Mon, 13 Oct 2014 15:04:10 -0700 John R Pierce wrote: not having ever used anything on linux thats enabled with a checkbox, Type system-config-printer at a root prompt. Then right-click on the printer that you want to look at, click on Properties - Policies State: Enabled check Accepting jobs check Shared check The Shared checkbox is what allows the other machines on the network to see that printer. its hard to say. are the printer clients MS Windows or Unix/Linux ? Both client and server run Centos 6. If they are Linux do they connect with CUPS or LPR or what? The Centos default printer setup is cups. All of the shared printers that are connected to the print server machine just show up by magic when I run the system-config-printer command on the client machines. My objective is to make one of those printers disappear on some of the client machines, without making it disappear on the other client machines. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hiding a network printer
On 10/13/2014 3:15 PM, Frank Cox wrote: If they are Linux do they connect with CUPS or LPR or what? The Centos default printer setup is cups. All of the shared printers that are connected to the print server machine just show up by magic when I run the system-config-printer command on the client machines. My objective is to make one of those printers disappear on some of the client machines, without making it disappear on the other client machines. ok, thats probably via the CUPS Browsing protocol, https://www.cups.org/documentation.php/doc-1.4/spec-browsing.html ouch. CUPS printers are announced with UDP broadcasts. thats no fun to filter, since the one packet is sent to ALL stations at the same time. you could filter it at the client, but not at the server. its udp port 631 by default. -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
On 2014-10-13, Valeri Galtsev galt...@kicp.uchicago.edu wrote: On Mon, October 13, 2014 1:50 pm, Les Mikesell wrote: Being able to grab your existing desktop remotely with all open windows and long-running programs intact is a big plus, though - and you get that for free with NX or x2go. How much different is that from VNC? Just curious. I haven't used x2go, but NX is way faster than VNC over a slow link (e.g., home DSL, hotel wifi) in my experience. --keith -- kkel...@wombat.san-francisco.ca.us ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recommended way of handling iptables firewall in CentOS?
Bare bones is fine, but you miss out on the tools which may make your life easier. As an example you can configure a DB (PostgreSQL, mySQL, whatever) using the command, but it is frequently more time-cost effective to use a tool. Things like SSH used to be optional at one time. Now it is in every distribution's standard build. useradd is not really needed. How bare bones do you want to get? Cheers, Cliff On Tue, Oct 14, 2014 at 12:41 AM, Niki Kovacs i...@microlinux.fr wrote: Le 13/10/2014 13:36, Ron Loftin a écrit : Of course, if you are interested in something that will help you to organize your rules, there is always Shorewall ( Shoreline Firewall ) which I have used for years and found very effective and time-saving. Thanks for the suggestion, I'll look into it. Though I admit having a clear preference for the bare bones approach to all things Linux. My favorite configuration tool is Vi :o) Cheers, Niki -- Microlinux - Solutions informatiques 100% Linux et logiciels libres 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 ___ 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
[CentOS] Filesystem writes unexpectedly slow (CentOS 6.4)
I have a rather large box (2x8-core Xeon, 96GB RAM) where I have a couple of disk arrays connected on an Areca controller. I just added a new external array, 8 3TB drives in RAID5, and the testing I'm doing right now is on this array, but this seems to be a problem on this machine in general, on all file systems (even, possibly, NFS, but I'm not sure about that one yet). So, if I use iozone -a to test write speeds on the raw device, I get results in the 500-800MB/sec range, depending on write sizes, which is about what I'd expect. However, when I have an ext4 filesystem on this device, mounted with noatime and data=writeback, (the filesystem is completely empty) and I test with dd, the results are less encouraging: dd bs=1M if=/dev/zero of=/Volumes/data_10-2/test.bin count=4 4+0 records in 4+0 records out 4194304 bytes (42 GB) copied, 292.288 s, 143 MB/s Now, I'm not expecting to get the raw device speeds, but this seems at least to be 2-3 times slower than what I'd expect. Using conv=fsync oflag=direct makes it utterly pathetic: dd bs=1M if=/dev/zero of=/Volumes/data_10-2/test.bin oflag=direct conv=fsync count=5000 5000+0 records in 5000+0 records out 524288 bytes (5.2 GB) copied, 178.791 s, 29.3 MB/s Now, I'm sure there can be many reasons for this, but I wonder where I should start looking to debug this. -- Joakim Ziegler - Supervisor de postproducción - Terminal joa...@terminalmx.com - 044 55 2971 8514 - 5264 0864 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Filesystem writes unexpectedly slow (CentOS 6.4)
On 2014-10-14, Joakim Ziegler joa...@terminalmx.com wrote: So, if I use iozone -a to test write speeds on the raw device, I get results in the 500-800MB/sec range, depending on write sizes, which is about what I'd expect. However, when I have an ext4 filesystem on this device, mounted with noatime and data=writeback, (the filesystem is completely empty) and I test with dd, the results are less encouraging: My first question would be, why not test the filesystem with iozone too? (And/or, test the device with dd.) You may or may not come up with the same results, but at least someone can't come back and blame your testing methodology for the odd results. (Just as an aside, if your 6.4 box is on a public network, you should probably consider updating it as well, since many security and bug fixes have been issued since 6.4 was released.) If you are still getting poor results from ext4, you have at least two more options. ==Check with the ext4 mailing list; they're usually pretty helpful. ==Try your tests against xfs. Try to make sure your tests are replicating your use cases as closely as you can manage; you wouldn't want to pick a filesystem based on a test that doesn't actually replicate how you're going to use the fs. --keith -- kkel...@wombat.san-francisco.ca.us ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Filesystem writes unexpectedly slow (CentOS 6.4)
On 10/14/2014 02:15 PM, Joakim Ziegler wrote: I have a rather large box (2x8-core Xeon, 96GB RAM) where I have a couple of disk arrays connected on an Areca controller. I just added a new external array, 8 3TB drives in RAID5, and the testing I'm doing right now is on this array, but this seems to be a problem on this machine in general, on all file systems (even, possibly, NFS, but I'm not sure about that one yet). The first thing I would check is that you have a BBU installed on the areca controller and that it is functioning properly (check the cli, I don't know the exact commands off the top of my head), also make sure that write caching is enabled on the controller (after you've checked the BBU, of course). Without a working BBU in place hardware RAID controllers, such as areca, disable write caching (by default) and this will have a significant impact on write speeds. Note that newer controllers use a type of flash memory instead of a BBU. Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Filesystem writes unexpectedly slow (CentOS 6.4)
On 13/10/14, 21:16, Peter wrote: On 10/14/2014 02:15 PM, Joakim Ziegler wrote: I have a rather large box (2x8-core Xeon, 96GB RAM) where I have a couple of disk arrays connected on an Areca controller. I just added a new external array, 8 3TB drives in RAID5, and the testing I'm doing right now is on this array, but this seems to be a problem on this machine in general, on all file systems (even, possibly, NFS, but I'm not sure about that one yet). The first thing I would check is that you have a BBU installed on the areca controller and that it is functioning properly (check the cli, I don't know the exact commands off the top of my head), also make sure that write caching is enabled on the controller (after you've checked the BBU, of course). Without a working BBU in place hardware RAID controllers, such as areca, disable write caching (by default) and this will have a significant impact on write speeds. Note that newer controllers use a type of flash memory instead of a BBU. Yes, I have a BBU and it's working. No write caching should, however, not affect raw device writes and filesystem writes so differently, I think. -- Joakim Ziegler - Supervisor de postproducción - Terminal joa...@terminalmx.com - 044 55 2971 8514 - 5264 0864 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Filesystem writes unexpectedly slow (CentOS 6.4)
On 13/10/14, 20:59, Keith Keller wrote: On 2014-10-14, Joakim Ziegler joa...@terminalmx.com wrote: So, if I use iozone -a to test write speeds on the raw device, I get results in the 500-800MB/sec range, depending on write sizes, which is about what I'd expect. However, when I have an ext4 filesystem on this device, mounted with noatime and data=writeback, (the filesystem is completely empty) and I test with dd, the results are less encouraging: My first question would be, why not test the filesystem with iozone too? (And/or, test the device with dd.) You may or may not come up with the same results, but at least someone can't come back and blame your testing methodology for the odd results. (Just as an aside, if your 6.4 box is on a public network, you should probably consider updating it as well, since many security and bug fixes have been issued since 6.4 was released.) If you are still getting poor results from ext4, you have at least two more options. ==Check with the ext4 mailing list; they're usually pretty helpful. ==Try your tests against xfs. Try to make sure your tests are replicating your use cases as closely as you can manage; you wouldn't want to pick a filesystem based on a test that doesn't actually replicate how you're going to use the fs. Googling shows some people who solved what seems like a similar problem with a kernel upgrade, so I'm going to try that. This box is on 2.6.32-358, and 2.6.32-431.29.2 seems to be the newest. At least it's a factor to eliminate. -- Joakim Ziegler - Supervisor de postproducción - Terminal joa...@terminalmx.com - 044 55 2971 8514 - 5264 0864 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 6.4 kernel panic on boot after upgrading kernel to 2.6.32-431.29.2
I'm on a Supermicro server, X9DA7 motherboard, Intel C602 chipset, 2x 2.4GHz Intel Xeon E5-2665 8-core CPU, 96GB RAM, and I'm running CentOS 6.4. I just tried to use yum to upgrade the kernel from 2.6.32-358 to 2.6.32-431.29.2. However, I get a kernel panic on boot. The first kernel panic I got included stuff about acpi, so I tried adding noacpi noapic to the kernel boot parameters, which at least changed the kernel panic message, now I get (transcribed from a photo I took, so please excuse any errors): Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.32-431.29.2.el6.x86_64 #1 Call Trace: (excluding addresses, please let me know if they're good for anything) panic do_exit fput do_group sys_exit_group system_call_fastpath My grub.conf entry looks like this currently: title CentOS (2.6.32-431.29.2.el6.x86_64) root (hd0,0) kernel /boot/vmlinuz-2.6.32-431.29.2.el6.x86_64 ro root=UUID=ca1e1248-0a65-4b6c-9f87-0c859eab1f17 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rhgb quiet nomodeset rdblacklist=nouveau KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM verbose selinux=0 enforcing=0 noacpi noapic nolapic nouveau.modeset=0 initrd /boot/initramfs-2.6.32-431.29.2.el6.x86_64.img (With all the options I added to see if it would work, including a couple from a very similar box that runs fine with that kernel, but on CentOS 6.5.) This box has a bunch of cards in it, including some NVidia GPUs in a PCI expander, another NVidia GPU for the GUI, an Areca controller, a Mellanox IB adapter, and some other stuff. But, I'm pretty sure this must be something simple I'm missing. Ideas for figuring it out? -- Joakim Ziegler - Supervisor de postproducción - Terminal joa...@terminalmx.com - 044 55 2971 8514 - 5264 0864 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
