Re: [CentOS] openldap mmr + heartbeat hot standby
Thanks Mark, that does make it more clear, i've made a setup and heartbeat does that by default, when heartbeat shuts down it's stops slapd as well and assignes the ip to machine2 and starts slapd there , what i want is that it already has slapd running on the failover but still checks that service for availability. that way i won't have an outdated database on the failover ldap server. would you know if there is a way of making heartbeat not sending the stop command to a particular resource or do i need write a script to (not) do this? i wouldn't mind a script but if that function is already there i'd rather use that one. Thanks, Wessel Wessel, Just pass heartbeat an IP, not a service. If you use IPaddr2 it will also send a gratuitous ARP that will cut down the failover time. eg. primarynode.mycompany.com IPaddr2::10.10.10.50/24/eth0 All the services will stay running, if you want to do service checks to watch slapd to see if it breaks you can use the mon project to kickoff a heartbeat failover. -Tait ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Floating VIP...
On Fri, 2012-05-11 at 05:40 -0700, John Doe wrote: Hi, right now I am using only one external server as a gateway for the internal servers. I would like to enable a fail-over on a second server. To implement the floating VIP, should I use heartbeat+pacemaker? Or is there something more lightweight? Basically, I just need server2 up the VIP when server1 is down, and server2 down the VIP when server1 is back up (or server 1 does not up the VIP seeing server2 has it already). Thx, JD Heartbeat is a pretty lightweight way of doing this. With any failover/VIP setup there is always the possibility of a split-brain but for the most part I haven't seen this happen in my environment. Also, use IPaddr2 as the resource type as it will do an gratuitous arp, significantly decreasing the failover time. eg. [haresources file] node.fqdn IPaddr2::10.10.10.10/24/eth1 Substitute your IP, mask and network interface. There are some options you can set as well that tell it not to fail back automatically, just so you can check the box that failed before pushing services back to it. Tait ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to prevent virtual machines running twice on the disk images?
On Fri, 2012-05-11 at 12:51 +0200, Theo Band wrote: I use KVM on two identical centos5 hosts. I can live migrate the virtual machines from one to the other and it works great. Once I do this, I can see VM definitions on both hosts using virt-manager or virsh list --all On one machine the VM is running, on the other it reports shut off. The disk images are accessible to both host machines and I want to have only one running a the time (of course). If the VM locks up, I could by mistake think that the machine is not running and try to start it on the wrong host. My question is, how can I prevent host A from starting a shut off VM that actually has been migrated to host B? The VM could actually be running on any another host. It could also have been crashed. The most simple solution would be some sort of lock file placed next to the disk image location, so seen by all hosts. But perhaps there is another way of working with virt-manager that I am not aware of? Theo This may not be what you are looking for, but you could always dump the xml of the domain to a file (so you could define/start it again if needed), then undefine the domain using virsh. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can only login as root
On Thu, 2012-05-03 at 13:47 +0100, Timothy Murphy wrote: I have a strange problem on a CentOS-5.8 machine. I can only login as root. If I try to login with one of the user's names, it hangs for a long time. I thought it hung forever, but I just found that I do login after su tim after 5 minutes. It seems that the problem lies in repeated messages in /var/log/messages --- May 3 12:14:13 helen su: nss_ldap: failed to bind to LDAP server ldap://www.gayleard.com/: Can't contact LDAP server May 3 12:14:13 helen su: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... --- The openldap server is not running, and I don't see why this authentication is being sought. There is nothing in /etc/pam.d/su or /etc/pam.d/login or /etc/ssh/sshd_config to suggest that ldap needs to be invoked, unless it is a part of system-auth . Have you also checked /etc/nsswitch.conf? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Host Machine and Iptables problem
On Tue, 2012-05-01 at 02:08 -0500, Cbulist wrote: On 05/01/2012 02:03 AM, Barry Brimer wrote: Yes, I thought the same but my confusion is that I don't see any rules of PREROUTING and POSTROUTING in the /etc/sysconfig/iptables file. [root@VS01]# cat /etc/sysconfig/iptables # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -m state --state NEW -m udp -p udp --dport 631 -j ACCEPT -A INPUT -m state --state NEW -m udp -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 631 -j ACCEPT -A INPUT -m state --state NEW -m udp -p udp --dport 631 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT But when I check the command iptables -L -t nat I can see the NAT rules [root@VS01]# iptables -L -t nat Chain PREROUTING (policy ACCEPT) target prot opt source destination Chain POSTROUTING (policy ACCEPT) target prot opt source destination MASQUERADE tcp -- 192.168.122.0/24!192.168.122.0/24masq ports: 1024-65535 MASQUERADE udp -- 192.168.122.0/24!192.168.122.0/24masq ports: 1024-65535 MASQUERADE all -- 192.168.122.0/24!192.168.122.0/24 MASQUERADE tcp -- 192.168.100.0/24!192.168.100.0/24masq ports: 1024-65535 MASQUERADE udp -- 192.168.100.0/24!192.168.100.0/24masq ports: 1024-65535 MASQUERADE all -- 192.168.100.0/24!192.168.100.0/24 Chain OUTPUT (policy ACCEPT) target prot opt source destination am I missing something? Maybe .. do you have IPv4 forwarding enabled? What is the output of cat /proc/sys/net/ipv4/ip_forward ?? If it is 0, then edit /etc/sysctl.conf .. find net.ipv4.ip_forward .. set it to 1 and then run (as root) sysctl -p In the Host machine the ip_forward is 1 If you restart libvirtd it should add in the IPTABLES rules you are missing. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql won't start with service, but starts with mysqld_safe
On Sat, 2012-02-04 at 17:15 -0700, Larry Martell wrote: Just installed mysql on centos 6.2. When I try to start it with service I get: #service mysqld start MySQL Daemon failed to start. Starting mysqld: [FAILED] Nothing at all is written to the error log. But if I start it with mysqld_safe it comes up and works fine. Anyone know what's going on here? Did it hang while trying to start? Or was it an immediate failure. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] configure network bridge listing bridged intefaces
On Fri, 2012-02-03 at 16:07 +0300, Mihamina Rakotomandimby wrote: Hi all, Having a 4 NIC server, I want to bridge eth2 and eth3, with a bridge named br0. Searching the web I only found about creating a file /etc/sysconfig/network-scripts/ifcfg-br0, but did not find where to explicitely list what ports will be bridged. Do you mean bridging or bonding? Bonding is where you are combining two NIC ports for speed or reliability. Also known as link aggregation. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Problem with Centos 6.2 KVM
Any other ideas? TIA Is your CPU VT-enabled? Is it capable and enabled in BIOS? Intel: cat /proc/cpuinfo | grep vmx AMD: cat /proc/cpuinfo | grep svm ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)
But a new problem arises ... one of the m0n0wall instances needs to use DHCP to get a dynamic IP from my ISP (the others are static, so they're ok). How do I get the bridge to proxy the DHCP request and forward the response to the VM guest? I brought up a test instance of m0n0wall but when it asks for an IP on its WAN side, the result is 0.0.0.0/8 so it would appear the request never makes it to the ISP. As a sanity check, I configured the WAN-side bridge to use DHCP and that worked, but it's the m0n0wall VM guest that needs to make the request, not the CentOS host. Suggestions anyone? In the mean time, I'll keep looking for a solution. Thanks, Chuck Hmmm. Is the bridge up and you can see the interface attached to it from running brctl show and ifconfig? Could you attach that output? If yes, then I would do a packet capture on the CentOS host on the eth interface attached to the bridge to see if the request makes it out. I'm running XEN at home and I have a very similar setup where I pass a VLAN from my switch that a provider modem is connected to into a bridge and it gets DHCP no problem (as long as the bridge and dot1q subinterfaces show up in ifconfig). The bridge should automatically send all the traffic out regardless of protocol, I doubt ebtables would be actively blocking anything as well and same goes for the ISP locking down with MAC addresses. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)
I've Googled until I'm blue in the face, but haven't found a clear explanation of how I can assign each ethX device directly to the guest OS rather than going thru the usual bridge configuration. I need to allow the m0n0wall OS to assign the LAN and WAN IP addresses, if that's possible without using a bridge. I would think that it is a little easier to setup a bridge but not assign an IP address for it on the CentOS host. eg. /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 TYPE=Bridge BOOTPROTO=none ONBOOT=yes NM_CONTROLLED=no /etc/sysconfig/network-scripts/ifcfg-ethX (where X is the interface number of one of your intel ports and the HWADDR is the MAC address) DEVICE=ethX ONBOOT=yes BRIDGE=br0 HWADDR=xx:xx:xx:xx:xx:xx NM_CONTROLLED=no Restart the network service, then run brctl show - the new bridges should show up. Create the 8 bridges that you need and go from there, you should be able to assign them in Virtual Machine Manager to the VMs. Then in your VM guests you should be able to assign the IPs that you want. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)
My question is: are the taps being used behind the scenes (is it something libvirt does for us) or are the tap interfaces obsolete now? Thanks, Jorge Yes, as far as I know in Xen/KVM the tap devices are connected behind the scenes to the bridge you specify in the config. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] No module named cygvirtmod
On Thu, 2012-01-12 at 14:24 +, Lars Hecking wrote: I'm trying to set up a xen guest on a machine that already has a few others running (not set up by me). It fails with the following error: + virt-install -r 512 -n host5 -f /dev/vol0/lvol5 --nographics -p --os-type=linux --os-variant=rhel5 --accelerate -l http://bla -x ks=http://bla/ks.cfg -m MA:CA:DD:RE:SS Traceback (most recent call last): File /usr/bin/virt-install, line 31, in ? import libvirt File /usr/lib64/python2.4/site-packages/libvirt.py, line 12, in ? import cygvirtmod as libvirtmod ImportError: No module named cygvirtmod Do you have the libvirt-python package installed? Also check for the virt-viewer package (which helps with a lot of virt tool errors). Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Clustering solutions - mail, www, storage.
I am currently working for a hosting provider in a 100+ linux hosts' environment. We have www, mail HA solutions, as storage we mainly use NFS at the moment. We are also using DRBD, Heartbeat, Corosync. I am now gathering info to make a cluster with: - two virtualization nodes (active master and passive slave); - two storage nodes (for vm files) used by mentioned virtualization nodes (also active/passive). For virtualization I am thinking to use OpenVZ or KVM. For storage NFS or iSCSI. Could you please share your experiences with these technologies? Which one would you use and why? Are there any good alternatives in CentOS? Thanks for the info, Rafal. I mainly go with Xen for a virtualization platform but KVM will work as well assuming that your hardware supports it. For a storage platform I'm assuming you are going to use servers with disk exporting as either NFS or iSCSI. If you are going this route I would suggest spending the money on a redundant storage array (one with redundant heads, power supplies, etc) that serves NFS as that I have found the easiest to deal with for migrations and everything else. If you can't do that, I would use servers with enough disk storage to make a decent array, setup DRBD in master/slave and export via NFS to your virtualization hosts. If money is really tight you could setup just two servers that act as virtualization hosts and storage platforms with an active/active two-node cluster using master/master DRBD + GFS. Be warned that you will lose quite a bit of performance due to the overhead of the cluster VS a dedicated purpose-built storage array... but we've been running this for a while without issue in some areas. -Tait ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] No sound over HDMI using nvidia graphics card
Under gnome control panel, all seems ok: under sound preferences, sound output is configured to use HDMI channel. I am using nvidia drivers from elrepo.org (nvidia-x11-drv-290.10 and kmod-nvidia-290.10). Somebody knows where can I find some doc to resolve this? Any idea? I recall doing this on Fedora 14 for my HTPC so it should be similar or at least point you in the right direction. I wrote something for it (GeForce 210) here: http://taiter.com/techlog/2010/07/nvidia-gt210---hdmi-audio.html I remember having to update the alsa-driver package to something newer than what was default via ATrpms repo. I believe you need version 1.0.23 or newer for it to work (version can be checked by looking at /proc/asound/version). Then I had to go into alsamixer and unmute the line. Tait ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] No sound over HDMI using nvidia graphics card
http://taiter.com/techlog/2010/07/nvidia-gt210---hdmi-audio.html My mistake, the correct link is here: http://blog.taiter.com/tech/2010/07/nvidia-gt210---hdmi-audio.html Forgot I was testing my redesign and had the wrong server in my host file :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Bonds, VLANs, and Bridges on Centos 5.6
On Fri, 2011-11-18 at 17:56 -0500, Jason Nagashima wrote: Running on Centos 5.6 with KVM... I was wondering if anyone had any luck configuring the NICs where eth0 and eth1 are bonded together with vlan support to a bridge? I noticed some threads show this as a possibility (http://lists.centos.org/pipermail/centos-virt/2009-November/001417.html), but haven't had any luck implementing it. There also seems to be a bug with 5.6 (http://bugs.centos.org/view.php?id=4801), but that post died the day it was created it. Any advice/working examples would be greatly appreciated. Hi Jason, I have had luck doing this with Xen, where I create bond0 on a trunk interface and have xen bring it up as xenbr0 with pbond0 in the back end. You should be able to do roughly the same by creating a bridge interface in /etc/sysconfig/network-scripts referencing bond0 as a member. After that you should be able to run a script to create VLAN bridges like the following: #!/bin/bash /sbin/modprobe 8021q # Add your vlans here that you want with the numbers separated by a # space VLANS=5 10 15 20 # This should work with the bonding interface TRUNKINT=bond0 for VLAN in $VLANS do vconfig add $TRUNKINT $VLAN brctl add br$VLAN brctl addif br$VLAN $TRUNKINT.$VLAN ifconfig $TRUNKINT.$VLAN up ifconfig br$VLAN up done I have done this with Xen on 5.5, 5.6 and 5.7... but it should work for KVM. If you create the standard bridge interface br0 using just bond0 that will get you a trunk on whatever the native vlan is for that trunk. Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Simulate Network Cable Disconnect
On Wed, 2010-05-12 at 10:09 -0400, Kanwar Ranbir Sandhu wrote: On Tue, 2010-05-04 at 12:28 -0400, Tait Clarridge wrote: I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment. Couldn't you just do a ifdown ethX in the KVM itself? One of the bonded NICs will go down, and the kernel should report it as such. Regards, Ranbir I did try that but it didn't fail over, actually I think I did ifconfig ethX down instead of ifdown ethX. I will try again when I get some time, thanks for the pointer! :) Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] ssh slow
On Thu, 2010-05-06 at 16:39 +0100, Khusro Jaleel wrote: I've found that if I'm on an Ubuntu machine and SSHing to a Centos 5.4 machine, it does the same thing, i.e. it sort of hangs for a while then comes back after about 10-15 secs with a login prompt. I've found that editing the /etc/ssh/ssh_config (note ssh_config, NOT sshd_config) file on the Ubuntu box and *commenting out* the following fixes it immediately, without needing to restart anything: GSSAPIAuthentication yes GSSAPIDelegateCredentials no Change the above 2 lines to #GSSAPIAuthentication yes #GSSAPIDelegateCredentials no and try again. On 06/05/10 13:25, ann kok wrote: but I put this to no the ssh is still slow any hints thank you ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Try disabling both reverse DNS and GSSAPIAuthentication http://www.taiter.com/blog/2009/04/disabling-reverse-lookup-for-s.html Tait ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS-virt] Simulate Network Cable Disconnect
Hello All, I am having trouble simulating a network cable disconnect with KVM. I would like to test active backup bonding for a switch IOS upgrade in a production environment. Basically I have the VM running on a bridged network which is also tied into GNS3 simulating a small-scale version of the production environment. I have tried bringing down the vnetX interface and the actual virtual network itself (virbrX) with no luck. Has anyone had to do this before/maybe knows some tips? If more info is required about my setup, I can give it. Thanks! Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Release 6?
On Wed, 2010-03-31 at 19:22 +0100, Paul Stuffins wrote: Has it become usable again? Not sure, I don't use Fedora, I use CentOS on my servers and Linux Mint on my desk and laptop's. _ I use F12 on my laptop. I have to say it runs very well (definite improvement from F10 and previous). I also use it for my netbook (with a few tweaks) and everything is fine.. No fires or explosions to report of :) And to add something useless to the thread.. as far as I've heard, RHEL6 is going to be a while. The only things I have heard is that it will be based on F11/F12 (I think). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Get VNCserver to only listen on a particular IP address
On Mon, 2010-03-15 at 12:12 +, Keith Beeby wrote: Hi, Does anyone know if possible to get vncserver to only listen on one particular Ip address? Have two network interfaces (public + private) and just want the vncserver to listen on the private IP address 192.168.10 for example Thanks Keith __ If there is no way for the actual server to only listen on the private IP. Consider blocking the port on the external interface that your VNC server is listening on with iptables. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM management tools.....
On Tue, 2010-01-12 at 09:13 -0600, Tom Bishop wrote: Looking at what my best options for managing KVM via a gui. Running Centos 5.4 and have several machines and want to migrate off of vmware server 2.x. So far it appears that the management tools haven't quite cought up to Vmware but are gaining and closing. I have been looking at convirt, and others. I like what I see in Ovirt but I'm not sure it is available for centos 5.4, or is it? Is there anyone running ovirt in centos? Also, what are folks using for their management tools for KVM, Thanks. __ For GUI I use virt-manager from my Fedora laptop connected to the KVM host. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
I think 5.4 version of python-virtinst added some fixes aswell.. so maybe you need to upgrade to that for F12 installation to work. Also please try running xm console for the guest and see what it does and where it crashes.. If I do xm create -c f12domU.cfg it says Starting Domain f12domU and then brings me back to the command prompt on dom0. Thanks for the replies Pasi, I will try and get some time to bring this host out of production to perform the upgrade. - Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
On Fri, 2010-01-08 at 09:38 -0500, Tait Clarridge wrote: I think 5.4 version of python-virtinst added some fixes aswell.. so maybe you need to upgrade to that for F12 installation to work. Also please try running xm console for the guest and see what it does and where it crashes.. If I do xm create -c f12domU.cfg it says Starting Domain f12domU and then brings me back to the command prompt on dom0. Just do add something, this led me to believe there was an incompatible kernel, and have tried both i686 and x86_64 kernels. Thanks for the replies Pasi, I will try and get some time to bring this host out of production to perform the upgrade. - Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Laptop for CentOS-5
How about Thinkpad W500 ? It is a bit expensive, but .. with UBuntu or OpenSUSE os. -- Eero I can second this, I recently obtained a Thinkpad W500 and it has been working flawlessly under Fedora 12. I will hazard a guess that the wireless may not work out of the box in CentOS, but everything else *should* be fine. Plus, with a screen that gets to 1900x1200 I no longer require a second monitor. The one I have has: Core2Duo T9900 @ 3.06GHz 6GB PC3-6500 DDR3 320GB 7200 RPM drive Fedora 12 is nice because it supports almost everything out of the box, sounds works 100%, network 100%... etc. The only thing that doesn't work is the fingerprint reader because fprintd doesn't have support for the device (I had the same problem on my Toshiba Tecra A10). Also, as far as I have read, Fedora 11/12 will be the base for the upcoming RHEL 6 and therefore CentOS 6.x so theoretically if it works in F12, you will be alright for the next CentOS release. Tait signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Fedora 12 domU will not boot kernel
I think 5.4 added some hypervisor/dom0 side fixes, that might be needed for F12 guests. I'm not totally sure. You can go through redhat bugzillas if you want :) I will take a look into the changes, thanks. I've been successfully running both 32bit and 64bit Fedora 12 domUs/guests on EL 5.4 dom0. What's the actual problem? Use virt-install or virt-manager to install new F12 guest. Btw what's your hardware? -- Pasi To install the guest I mounted the DVD on a remote webserver and exported via HTTP, from dom0 I grabbed the pxeboot kernel and ramdisk and passed those to the domU to start the install. When using the F12 kernel/ramdisk the domU doesn't cause any errors (logs are clean as well) but it doesn't start. It goes up and down twice in very quick succession and the logs tell me that it is rebooting too quickly and therefore it stops attempting to boot the domU. When using the F11 install kernel/ramdisk the domU boots and installs just fine. To get it to F12 I tried preupgrade but on rebooting when I select the preupgrade selection from pygrub it has the same behaviour as the initial F12 install. Same thing happens when I do the upgrade from yum and try to boot the new kernel. The machine right now is running all F12 software except for the kernel. When booting any F12 kernel there are no error messages in either domU (obviously) or dom0. The hardware is a SunFire x4140 with 64GB ram and dual quad core Opterons. I can get more specific if you would like, but xen has worked perfectly on these machines with every other type of OS except F12. I will try and get some downtime for the box so I can upgrade if the conclusion is that some dom0/hypervisor fixes in the newer kernel/xen packages will solve the problem. I appreciate the help and quick responses so far :) Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Fedora 12 domU will not boot kernel
Hello Everyone, I have been trying to get a Fedora 12 domU to boot for the better part of the afternoon and haven't had success booting any F12 kernel in Xen. I can get Fedora 11 installed no problem, tried to do a preupgrade but the when booting the preupgrade kernel through grub (or even from outside the domU) the domU reboots very quickly and ultimately crashes. As far as I saw in the qemu-dm-xxx.log, xend.log, and xend-debug.log there are no messages informing me of what went wrong. I am using CentOS 5.3 with the 2.6.18-92.1.22.el5xen kernel. I am unable to update the kernel at this time as new drivers cause major disk controller issues. If it as simple as a kernel update I will try again, but as of right now I am stumped so I asking for a little help! Has anyone successfully gotten F12 set as a domU using the regular CentOS xen and kernel-xen packages? xen-3.0.3-80.el5_3.3 kernel-xen-2.6.18-92.1.22.el5 Best, Tait signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] virt-install failed while install windows2003 guest
On Tue, 2009-12-08 at 12:41 +0100, Markus Falb wrote: On 8 Dec 2009, at 09:58, rewing wrote: libvirtError: internal error unable to start guest: qemu: could not open disk image /vm/win2k3.img Do you have selinux enabled ? As far as I know the location for images is restricted to /var/lib/libvirt/images by default. -- Or does the actual disk image exist at /vm/win2k3.img with r/w access to whoever is running the virt-install command? Does the /vm directory exist and does the user have permissions to access it? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Live migration and DRBD
On Mon, 2009-11-30 at 13:53 -0200, Gilberto Nunes wrote: Hi folks I deploy a two Dell PowerEdge T300 to test Virtualization with kvm+drbd+heartbaet. The KVM drbd and heartbeat work properly. However, I have doubt!! When the primary node has down, the secondary node start the VM that has original running on primary node... So, this required a full stop of hole system... This is not we wish here... Is there something way to live migrate VM from primary node that was shutdown I have no idea how to make this stuff working... Thanks for any help Currently there is work being done on a project for Xen called Remus. I am not sure about KVM but Remus is still in development and although it has been merged into the xen-unstable repository, it isn't completely ready yet (although the developers are working very hard). Basically it performs the first part of a live migration and if connection is lost, it will jump the virtual machine over to the secondary host. http://nss.cs.ubc.ca/remus/ It appears that Red Hat is including high availability for KVM in their Red Hat Enterprise Virtualization Manager for Servers. Not sure if this is going to make it to CentOS, can someone confirm/deny? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.
On Fri, 2009-11-27 at 21:17 -0800, John R Pierce wrote: nate wrote: Tait Clarridge wrote: Steve: What module does your Dell Perc use? I don't have access to my server to check. megaraid_sas is what my PERC 5i and 6i use I'm pretty sure the PERC 5i/6i are more than just the 1068E SAS chip, although they very well could include that. I agree. Billy, did you email Supermicro? I think they might be able to send you a driver disk to use during install if you didn't get one initially. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] VLAN bridge config for xen - Was: Controlling allocation of ethernet devices and KVM
On Sat, 2009-11-28 at 00:50 +0200, Manuel Wolfshant wrote: On 11/28/2009 12:43 AM, Tait Clarridge wrote: The init scripts support VLANs and bridges out of the box. Adding more scripts is not necessary. Interesting, XEN specific scripts? Or CentOS scripts. Neither. When using centos, vlan related modules are loaded automatically after specifying VLAN=YES in sysconfig/network. And vlan/bridge interfaces are configured exactly the same as normal interfaces Interesting, thanks for the info. Can I specify which VLANs it is going to configure and bridge? signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] VLAN bridge config for xen - Was: Controlling allocation of ethernet devices and KVM
but as you have said, to each their own. you prefer slackware, I prefer centos. I never said I use Slackware... anyways. It is nice when rolling out dozens of machines quickly and not having to worry about all the VLAN and bridge init scripts. signature.asc Description: This is a digitally signed message part ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Centos 5.4 on Acer Aspire One
On Fri, 2009-11-27 at 09:41 -0600, Frank Cox wrote: On Fri, 2009-11-27 at 03:51 -0700, Craig White wrote: did you create that USB disk using Fedora or CentOS? I created it using Centos 5.4. does this relate? https://fedoraproject.org/wiki/Fedora_11_Beta_release_notes#Live_Image_issues The screenshot looks exactly like what I see. Which is interesting considering that neither the image or the system it was created on has anything to do with Fedora 11. I can't think of any reason I would put CentOS on my Aspire One...I've got it working well with F12 now I seem to have a choice between reinstalling Fedora on it (because I can't get it to update to Fedora 12) or installing Centos on it. Since they both involve a scratch install, I might as well install Centos on it so it will match my desktop machine. I know this is a CentOS list, but personally I would go for Fedora 12. They have done some optimizations for netbooks and you will have get a lot more functionality due to the drivers included with Fedora 12 vs CentOS 5 (based on Fedora Core 6). If you want wireless, Fedora is probably the easiest of the two. Any specific reasons why you want CentOS on a netbook? More specifically why you want enterprise Linux on your netbook? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 5.4 on Acer Aspire One
On Fri, 2009-11-27 at 10:07 -0600, Frank Cox wrote: On Fri, 2009-11-27 at 10:54 -0500, Tait Clarridge wrote: If you want wireless, Fedora is probably the easiest of the two. It's my understanding that Centos now includes support for the wireless networking in the Acer Aspire One. Any specific reasons why you want CentOS on a netbook? More specifically why you want enterprise Linux on your netbook? It's my last computer with Fedora on it. Everything else now runs Centos. So I figure that it it will work with Centos (which it apparently will) then I would like to have it match the rest of my stuff. Alright. I can understand continuity. I personally keep CentOS for servers and Fedora for desktops and laptops. How did you create the Live USB? You may want to try using either a DVD install image or NetInstall image after backing up your netbooks drive. I use uNetbootin to create USB images of DVDs CDs for use in my Epc. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 5.4 on Acer Aspire One
On Fri, 2009-11-27 at 15:18 -0600, Frank Cox wrote: On Fri, 2009-11-27 at 14:49 -0500, Tait Clarridge wrote: How did you create the Live USB? http://fedoraproject.org/wiki/FedoraLiveCD/USBHowTo I went through the How to partition and How to format sections,then the Command Line Method - Linux only subsection titled Run livecd-iso-to-disk script. You may want to try using either a DVD install image or NetInstall image after backing up your netbooks drive. My Acer Aspire One has an internal hard drive and that's it. I know, so does my EEEpc. But I used Unetbootin (a package that is available in Fedora (yum install unetbootin). It allows you to create a Live USB using any CD or DVD image. So for example, I could use unetbootin to get the CentOS 5.4 netinstall CD on my USB key without having to anything but selecting the iso and USB drive I want. You will need to run it with root privileges though. But basically put in the USB stick, fire up unetbootin and go from there. Once you reboot onto the USB key just select the first option in the unetbootin menu and it should launch the netinstall CD. You will probably have to plug it into a wired network as well, I have never had a netinstall disk working with wireless, especially in CentOS. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 5.4 on Acer Aspire One
Again, experts, please correct me if I'm off-base here. I'm not familiar with Fedora images, though I imagine that they operate the same general way as RH/CentOS images since they all share the same base code. Not considering myself an expert, but the Fedora Live CD has an option to install to the hard drive after booting it on a USB key. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.
On Fri, 2009-11-27 at 18:11 -0500, Billy Huddleston wrote: Yes, their is a RAID 10 volume setup in the controller BIOS. A previous response suggested using JBOD mode. But maybe someone has installed CentOS with the 1068E controller using a RAID mode. If I understand the problem correctly, the CentOS installer is unable to see your RAID volume? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Centos 5.4 on Acer Aspire One
On Fri, 2009-11-27 at 17:43 -0600, Frank Cox wrote: On Fri, 2009-11-27 at 15:06 -0800, MHR wrote: Again, I'm no expert here, but if you can get a livecd image written on a USB flash drive to boot, you should be able to get a netinstall cd image to boot just as well, from a USB drive. That should do the trick (if it will boot at all). I think that's the next thing I'm going to try. The netinstall would be handier than the livecd, if I can make it work. I was going for the Centos livecd simply because that's what I did to get Fedora on it and I figured I could just do the same thing again. Apparently not. I sent a message about using unetbootin to get regular CD and DVDs bootable off of USB without much work needed... if you didnt want to try and round up an external DVD drive to use. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.
On Fri, 2009-11-27 at 18:57 -0500, Steve Thompson wrote: On Fri, 27 Nov 2009, Billy Huddleston wrote: Great, which driver did you use and where can I get it... and was this for a 32bit or 64bit CentOS install? It was 64-bit; I just used the regular CentOS installation CD's; no special drivers at all. Steve Steve, did you configure RAID in the BIOS or use JBOD and create a SW raid in CentOS? I noticed from a previous post that you said it was working, the info may help Billy. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.
On Fri, 2009-11-27 at 21:18 -0500, Billy Huddleston wrote: JBOD a bust. It doesn't see any hard drives that way either. Anyone have any other ideas? Ask Supermicro for the IT mode of your firmware if it exists. They are usually really good at answering support questions if you email them, I've normally heard back from them within 24 hours. You can also ask supermicro for a driver disk (if you did not get one) to use during the install if you pass linux dd to the command line while booting the CD/DVD. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.
On Fri, 2009-11-27 at 22:10 -0500, Billy Huddleston wrote: I just read the user manual on it.. It says the following... IT Mode (Initiator and Target Mode) This is a Non-RAID mode. To use this mode, be sure to fl ash an IT mode firmware to the EEPROM and to install an IT Mode driver to the system OS. So, I'm confused, what point is a RAID controller that doesn't support RAID ? Thanks, Billy Probably for compliance, might as well give it a try if you can... The Perc 4i/5i stuff that Steve was talking about is definitely supported as I have a server that uses this. They may be exposed and use different drivers than the straight LSI SAS 1068E. Steve: What module does your Dell Perc use? I don't have access to my server to check. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SNAT question
On Thu, 2009-11-26 at 00:58 +0200, Peter Peltonen wrote: On Mon, Nov 23, 2009 at 4:31 PM, Peter Peltonen peter.pelto...@gmail.com wrote: Hi, On Mon, Nov 23, 2009 at 4:15 PM, Giovanni Tirloni tirl...@gmail.com wrote: On Mon, Nov 23, 2009 at 12:10 PM, Peter Peltonen peter.pelto...@gmail.com wrote: Hi, I am unable to get my LAN masqueraded using SNAT with CentOS 5.3 and iptables. I have the following setup: eth0: connects to internet with static public IP 1.2.3.1 (obscured here for privacy) eth1: connects to DMZ with static public IP 1.2.3.2 (obscured here for privacy) eth2: connects to LAN with static private IP 192.168.0.1 Traffic to hosts in the DMZ/Internet through eth0/1 work fine. I tried masqueradig the LAN with following: ptables -A FORWARD -i eth2 -j ACCEPT iptables -A FORWARD -o eth2 -j ACCEPT iptables -A POSTROUTING -t nat -s 192.168.0.0/24 -o eth0 -j SNAT --to-source 1.2.3.1 After this I can ssh to a server in the Internet from the LAN using the server's IP address but not its name. The w command on the server tells me that my address has not been masqueraded (its 192.168.0.2, the LAN client's private IP). If you can ssh to a server on the Internet then your connectivity is working. You might want to check if DNS is allowed and working from the LAN hosts to the Internet. The fact that 'w' shows your internal IP address is because you're connecting from the LAN to the gateway, which doesn't trigger the SNAT because it's not forwarding any packets... only accepting your connection. Hmm,I am SSHing not to the gateway but to a server in the Internet, so shouldn't it masquerade the address and w show the gateway's IP and not the client's -- isn't this the whole point of the SNAT? No other service than SSH seems to work. If I do telnet mydnsip 53 there is no response, it just hangs. I also have correct DNS in /etc/resolv.conf. Nobody has any other ideas what I might be doing wrong here? Best, Peter I had to get the VPN address range masqueraded on the LAN as the gateway address.. so for example: VPN Server LAN IP: 192.168.1.20 (not the real thing, but doesn't matter) VPN IP Range: 10.99.0.0 So when I connect through OpenVPN, my tunnel adaptor is given an ip like 10.99.0.5 (basically like a LAN, or your eth2). What I did in IPTABLES is the following (eth0 is the LAN connection for the VPN server) iptables -t nat -A POSTROUTING -s 10.99.0.0/255.255.255.0 -o eth0 -j MASQUERADE After that it worked. All connections to anything on the LAN appear as if I am coming from 192.168.1.20. Just make sure that forwarding is enabled (I believe it is required for masquerade): cat /proc/sys/net/ipv4/ip_forward If it equals 0, change it to 1. You may want to remove all the other entries you tried to get LAN-Internet going to ensure there is nothing conflicting. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] install CENTOS 5.4 X86_64 failed???
On Tue, 2009-11-24 at 14:47 -0700, Dennis Kibbe wrote: I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install: parted_1.8.1-23.els.x86_64.rpm can NOT open anyone know why? Should I download it again from any good site? If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4? Thanks. Did you check that the DVD was good with mediacheck? md5sum'ed the ISO? No need to download again if the ISO is OK. dennisk Also, burn at the slowest speed to ensure that there are no errors. I have had this problem and solved it by burning at a slow speed, although it will take a lot longer to burn the DVD. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RAIDs and JBOD?
On Mon, 2009-11-16 at 21:49 +, James Bensley wrote: Ok, I'm back again... Thanks again to all for more replies and info, all the info of the list members is really appreciated. So I have found this card and wondered if anyone has a second opinion on it (http://www.supermicro.com/products/accessories/addon/AOC-SAT2-MV8.cfm). Seeing as it states on the website that the CD that comes with the card has RedHat drivers on it, and I will be using CentOS 5.4 i386 on my little home server everything should work just dandy shouldn't it? I am trying find some examples online of people using this card with CentOS in a software RAID but nothing yet so wondered if anyone here has any input here? -- Regards, James ;) If I am not mistaken that card uses the Marvell MV88SX5081 chipset and uses the sata_mv module (after a little googling). I have been reading around google and found that support for this was added in CentOS 4 (sata_mv). I also saw some posts regarding instability with this driver... sort of a use at own risk scenario. Some were saying disabling hw RAID helped, but I haven't used that card so I couldn't tell you. Maybe someone else on the list has used a card with the MV88SX5081 chipset? I have only played with the AOC-USAS-L8i card and that wasn't in Linux (it was for an Opensolaris build), we just needed to buy SFF-8087 to 4 x SATA cables to make it work. If you want to use SW raid, I might suggest going for a card that is just adds SATA ports and has no onboard RAID, but it is up to you. Tait signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installing libssl-dev
On Thu, 2009-11-12 at 14:49 -0500, Victor Subervi wrote: Thanks. V yum list '*ssl*' Gives you a list of packages with ssl in the name.. just go through them and yum info on ones that have dev or devel at the end to find what you are looking for. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Running SSH on a different port
On Sat, 2009-10-24 at 07:17 -0700, ML wrote: In /etc/ssh/sshd_config replace port 22 with port whatever high port ( 1024) you like Then configure your ssh clients accordingly. So I added Port 2977 Under Host * So I have: Host * Port 2977 I rebooted and I get a connection refused now when I try to connect. I am doing: ssh -p 2977 u...@ip My firewall is set to allow 2977. Just for shits I changed this to 29770 I ran: system-config-securitylevel-tui and customized and added 29770:tcp to other ports I then: nano /etc/ssh/ssh_config and said Port 29770 So that I have: Host * Port 29770 Protocol 2 I then did: service sshd restart and I still get connection refused. Comment out Port 29770 and all is well again. Have you restarted the ssh daemon after changing the config file? Also, have you restarted the iptables service after changing the firewall rules? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Running SSH on a different port
I then did: service sshd restart snip Have you restarted the ssh daemon after changing the config file? Ooops, I really need to not post to the mailing list when I am tired. My second question still stands, Also, have you run nmap on your host to verify that the port is open? Also, have you restarted the iptables service after changing the firewall rules? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Monitoring a remote server with Conky ?
On Mon, 2009-10-19 at 08:59 +0200, Niki Kovacs wrote: Hi, I've been using Conky for some time, a nifty utility to monitor just about anything on the PC. Vital things like CPU, RAM, swap, disks, current song playing in MPD :o) Here's what it looks like : http://www.microlinux.fr/images/bureau_conky.png And with more detail : http://www.microlinux.fr/images/conky_zoom.png Now I wonder... I'd really like to use that to monitor my remote server. I know this feature isn't officially supported by Conky, but I'm right now thinking about a workaround. Something like: OK, my server is 'headless' (e. g.: no graphical server, nothing), but why not install just xorg-x11-server-Xorg, then use Conky and forward it to my local display with SSH -X ? I'm pondering this question, thinking about the possible issues... ... so maybe one of you guys here has come up with some solution ? Cheers, Niki Hi Niki, You could try a local script that gets values from a server that you would like to monitor... I might suggest looking into setting up snmpd on the server and using snmp walk to probe specific values (that relate to processes/free memory). What exactly would you be looking to monitor on the remote server? Tait signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Mounting Network Storage Issues
On Wed, 2009-10-14 at 19:13 -0500, DTS-Corp (Knowledgebase) wrote: I have an Iomega NAS 1TB drive that I am using as just kind of a file sharing solution between all of my computers. Of course it is on a timed backup with my server however it just serves as a temporary solution for a bigger problem ( IE 15 different puters of all various OS Flavors). However I am not able to connect to any network storage server such as Windows PC's or NAS Storage using map network drive functions normally used with windows on CentOS. I am wondering if there is something goofy with this or is Cent just incompatible with NTFS network storage drives? If that drive is indeed using NFS, Windows does have an NFS client and it doesn't work out too bad. Can't remember where it is, but I think it is something called Unix Services for Windows. I have used CentOS to connect to a windows smb share.. so it does work, just had to look it up on google. I am kind of confused by your message, are you saying that the 1TB NAS drive is sitting on the network and is NOT attached to any computer on your network? Or is the problem connecting CentOS to a Windows share? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
On Tue, 2009-10-13 at 00:21 -0400, David Mehler wrote: Hi, Thanks for your reply. I'd probably be doing them in pairs spread out over a long period. I'd be interested in your php kickstart setup script. Thanks. Dave. You may want to look at cobbler. It has a PXE boot option that can be limited by MAC address. This would help in installing a certain profile to your machine making it easier for you to customize each install without having to burn mountains of CDs... I am playing around with cobbler right now, but I can still send you the kickstart script if you would like. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
On Mon, 2009-10-12 at 10:53 -0400, David Mehler wrote: Hello, This might be called a core build not completely positive. What i want to do is make a completely customized centos 5.4 unattended CD or DVt not only installs a specific list of apps apps that i want on each system, but configures them automatically perhaps via scripts, and enables or disables services etc. Basically, i want to drop the CD or DVD in a box which will probably not have a monitor anyway, and walk away. I then come back or ssh in and everything is already installed, any repos are added, configured and ready to go. Is this a core build? I'd appreciate any pointers on this. Thanks. Dave. Hi Dave, Investigate kickstart installs, you can customize packages and run scripts after the install is complete before the box restarts. Tait signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
On Mon, 2009-10-12 at 20:06 -0400, David Mehler wrote: Hi, Thanks for all your replies. I checked out spacewalk and cobbler, both of which look like they require a network support infrastructure, at least a tftp server. I want to use a CD or DVD. Kickstart sounds like the way to go, but i'm looking to have everything self contained, for example if i want to install the postfix package, i'll want to remove sendmail, set up postfix to start at selected runlevels and configure the main.cf and master.cf files so that when the box reboots postfix is ready to go. I'd also like to have this install as slimmed down as possible, for example i probably won't be using x so i'd prefer not to have any x packages in the install dvd. Thanks. Dave. I believe recently there was a thread posted about respinning a DVD for these purposes, you could also have a network install CD pointing to a local repository on your network and a kickstart on an internal webserver. Kickstart is very robust, I am pretty sure you can get it to do anything you want (especially after the install is complete). I currently have a kickstart script that installs packages for a PHP/mysql setup (as well as the base files) and then updates everything before rebooting. It also disables a few services that I do not require. I suggest hitting google for more kickstart tips/tricks.. as there are a lot of things you can do. The issue would be that for each of the new systems that you want to bring up unattended, you would possibly need to burn a new CD or change the kickstart config file on your web server. This would be because I am pretty sure that you do not want to have multiple machines using the exact same configuration information. Would you be doing multiple machines at once? Or one at a time, spread out over long periods. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 10 Year old IT Infrastructure
On Sat, 2009-10-10 at 14:08 -0400, Alan McKay wrote: The better solution would be to make sure you are prepared for when the hardware does fail. Inform the client that you understand that they don't want to upgrade the servers, and that hardware failure is not a case of if but when. Lay out a plan to them describing what would happen when that occurs, and how you will make sure that their downtime is minimal. For the win! This is by far the best approach if you want to bring them along. It has to be THEIR decision, so the best way to get them to make that decision is to sit back and say OK, if you don't want to upgrade that is fine, but we still have to make sure we are prepared for when that hardware fails, so here is what we'll do ... That will probably scare the crap out of them enough to change their minds :-) This is absolutely correct. I would try and ease them into understanding that hardware does fail and that they really do need to be prepared. Once they grasp that concept they will most likely let you make the backup and after the first major fail of their existing platform, never migrate back. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] xen guest system - install source - NOT
+---+ Error ++ || | Unable to retrieve | | http://ftp.funet.fi//pub/mirrors/cent | | os.org/5.3/os/i386/images/stage2.img. | || |++ | || OK | | |++ | || || ++ Strange, because I can download that image both with wget (from a http mirror) and with ftp (from a ftp mirror). Should I try downloading the whole i386 directory, and publish it locally with Apache, or something like that? - Jussi Well, it is putting an extra slash in front of the server address.. I remember this being a pain when trying to set a mirror to install up. Try the following: Web site name: ftp.funet.fi CentOS directory: pub/mirrors/centos.org/5.3/os/i386/ Make sure you DO NOT add a slash infront of pub in the CentOS directory line. This tends to work for me, how are you kicking off the xen guest install? Grabbed the xen kernel and ramdisk from a mirror? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] xen guest system - install source - NOT
On Fri, 2009-10-09 at 07:11 -0700, Craig White wrote: On Fri, 2009-10-09 at 09:45 -0400, Tait Clarridge wrote: +---+ Error ++ || | Unable to retrieve | | http://ftp.funet.fi//pub/mirrors/cent | | os.org/5.3/os/i386/images/stage2.img. | || |++ | || OK | | |++ | || || ++ Strange, because I can download that image both with wget (from a http mirror) and with ftp (from a ftp mirror). Should I try downloading the whole i386 directory, and publish it locally with Apache, or something like that? - Jussi Well, it is putting an extra slash in front of the server address.. I remember this being a pain when trying to set a mirror to install up. Try the following: Web site name: ftp.funet.fi CentOS directory: pub/mirrors/centos.org/5.3/os/i386/ Make sure you DO NOT add a slash infront of pub in the CentOS directory line. This tends to work for me, how are you kicking off the xen guest install? Grabbed the xen kernel and ramdisk from a mirror? two // doesn't matter in the least. I can easily retrieve this url... wget \ http://ftp.funet.fi//pub/mirrors/centos.org/5.3/os/i386/images/stage2.img If you look at the URL's generated by yum repos, they often have 2 slashes. Craig Alright, just relaying my findings when I was having problems here. I ended up having to mount the CD images on a blank ext3 partition and putting that in the domU config file. Thanks for clearing up the two slashes, I have noticed them working before but didn't know if the CentOS installer was getting confused with them or not. Could this be a network issue? OP: Is your domU config'd for networking properly? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can't download large files
:( wget? I've tried download using other utilities on my windows pc's, on my desktop [Ubuntu] I using rsync and scp to download, but get same problem :( Btw John, thank You for your advise... Really confused :( What filesystem type are you attempting to download to on each OS? signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GnuPG for CentOS 5.3?
On Sat, 2009-10-03 at 14:38 -0500, Lanny Marcus wrote: On 10/2/09, Dick Roth raro...@comcast.net wrote: Sorin Srbu wrote: -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Dick Roth Sent: Friday, October 02, 2009 12:44 PM To: CentOS List Subject: [CentOS] GnuPG for CentOS 5.3? Good Morning-- I'm looking to shore up security in my system and with communications. Can you point me to the proper version of GnuPG for CentOS 5.3 (Final)? snip Is this for use with Evolution or Thinderbird? Thanks to all who responded. I'll be using Thunderbird. Dick: I use Gnome, but there is a front end for GnuPG, KGpg that I have installed. You may want to consider it. Lanny Lanny If you are using Gnome, you may want to check out seahorse. Very easy to use. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Slightly OT: GPLPV driver selection.
On Wed, 2009-09-30 at 11:19 -0400, Centos wrote:
I'm in the middle of a (re-)install on a domU and looking for quick
replies as too which GPLPV to use on a Windows 2008 Server install.
Windows 32bit
Xen/Centos 64bit (x86_64)
The question is regarding whether the driver to load into Windows is for
itself (32bit) or the underlying hypervisor (x86_64) as in:
There is now one download per platform/architecture, named as follows:
* gplpv_chk/fre_platform_arch_version.msi
* chk is a 'checked' build which contains debug info (please use
these if you want any assistance in fixing bugs)
* fre is a 'free' build which contains no debug info
* platform is 'wxp' for XP, 'wnet' for 2003, and 'wlh' for Vista/2008
* arch is 'x86' for 32 bit and 'AMD64' for 64 bits
Is the architecture ('arch') x86 (for the Windows domU 32bit
architecture) or x86_64 (for the arch version of Xen running)?
I'm having a gray moment.
It happens.
The arch should be for the domU as it has to install drivers in the domU
only, not dom0.
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Re: [CentOS-virt] Centos virsh - add a physical device
Native config: cat win2k8.cfg name = win2k8-hvm uuid = c53ac13f-d32f-9934-8c0b-a8728fb52f19 maxmem = 1024 memory = 1024 vcpus = 1 builder = hvm kernel = /usr/lib/xen/boot/hvmloader boot = c If you want it to boot from anything in the CDROM device, change this to read: boot = dc pae = 1 acpi = 1 apic = 1 localtime = 0 on_poweroff = destroy on_reboot = restart on_crash = restart device_model = /usr/lib/xen/bin/qemu-dm vfb = [ type=vnc,vncunused=1,keymap=en-us ] disk = [ phy:/dev/vol1/win2k8,hda,w, phy:/dev/cdrom,hdc:cdrom,r ] Alright, if I am not mistaken your system already has a CDROM setup. It is pointing to the physical interface /dev/cdrom. I may be confusing your question, but did you want to add another one? If the current one isn't working you will have to figure out what the CDROM device name is (/dev/sr0 is also an option) but make sure you have modified the boot= line as I did above. You should also be able to add an ISO image to act as the CDROM (all on one line): disk = [ phy:/dev/vol1/win2k8,hda,w,file:/path/to/file.iso,hdc:cdrom,r] vif = [ mac=00:16:36:2a:e4:15,bridge=eth0,script=vif-bridge,vifname=vif50.0 ] parallel = none serial = pty Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] CentOS for non-tech user
On Tue, 2009-09-29 at 15:38 -0400, Alan McKay wrote: I've been generally unhappy with my CentOS desktop both at home and at work, when it comes to thinks like sound and video. I'd recommend going with Fedora Core, to be honest. Much as I love CentOS on my servers. This is more a reply to the general thread, not Alan's answer above. When I first picked up Linux for personal use I had tried CentOS and found that it was not properly or easily configured for any multimedia use. This was when I was starting to use Linux and didn't have the patience to configure everything. This is when I switched to Fedora for personal use, I have used Fedora Core 8 through 11 and haven't found any major issues configuring it for what I need. There can be issues with any distribution regarding HD sound, but if you google them the answers are almost always there. That is all I've had major problems with in running it on my laptops. I use a Toshiba laptop and it has worked flawlessly through each of the versions (except for the sound problems noted above). CentOS is great for server use and if you want to learn CentOS for use as a server, Fedora is a great place to start because they are both redhat based. Chances are that if you got something to work in Fedora, you can get it to work in CentOS (maybe with a few extra tweaks). I am not an Ubuntu basher, but I felt it was babying me a little too much. More than I would want to when learning a new system. Nothing like trial by fire to grow your linux knowledge. With most Linux installations you will end up tweaking something that isn't working as advertised. I am not trying to scare you away from linux, but in my experience it has been the case that I had to get my hands dirty on more than one occasion. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
On Tue, 2009-09-29 at 16:14 -0400, Alan McKay wrote: I am not an Ubuntu basher, but I felt it was babying me a little too much. Hmmm, maybe that's what I should put on my wife's laptop :-) I already know Linux very well - been a UNIX geek for over 20 years, and Linux geek for getting on 10 now. And I still get frustrated with how difficult it can be to set up multimedia! True. Fedora/CentOS can be less intimidating and Ubuntu more user friendly.. but where is the fun in that? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Centos virsh - add a physical device
On Mon, 2009-09-28 at 08:05 +0200, f...@ll wrote: Hi, If I create a guest which uses (hvm) can I add access to physical device like cdrom? Regards, f...@ll Yes, you are able to add a CDROM device to your guest. You can add either a physical drive or an ISO image. Are you using virt-manager or just config files at the command line? Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Centos virsh - add a physical device
On Mon, 2009-09-28 at 22:17 +0200, f...@ll wrote: Tait Clarridge pisze: On Mon, 2009-09-28 at 08:05 +0200, f...@ll wrote: Hi, If I create a guest which uses (hvm) can I add access to physical device like cdrom? Regards, f...@ll Yes, you are able to add a CDROM device to your guest. You can add either a physical drive or an ISO image. Are you using virt-manager or just config files at the command line? Tait ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt Hi, I using only a comman line, my centos server have only text console without a X server. I used a virsh. f...@ll Can you post the config file for the guest? ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
