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Hi all. I am currently designing a server room. I would like to be able to draw a 2D (in the future 3D) project. Do you know any tools? Which one can you recommend? Best regards, Rafal Radecki.

...ween Dom0 and DomU) about XEN. Key factors from my opint of view are: - stability (which one runs more smoothly on CentOS?) - performance (XEN PV/HVM(with or without pv drivers) vs KVM HVM(with or without pv drivers)) - security Could you share your experience in these areas? Best regards, Rafal Radecki.

...ween Dom0 and DomU) about XEN. Key factors from my opint of view are: - stability (which one runs more smoothly on CentOS?) - performance (XEN PV/HVM(with or without pv drivers) vs KVM HVM(with or without pv drivers)) - security Could you share your experience in these areas? Best regards, Rafal Radecki.

...end it to deploy a more heavy-duty server with for example 6 SATA disks, 24GB of RAM, 2 NICs, 8 cors. Which manufacturer can you recommend and why? We are looking for something rather not expensive but reliable which has a good support. All servers will be based on CentOS5/6 :) Best regards, Rafal Radecki.

...e share. Is there a way in linux/CentOS to automatically remount nfs share in such case? Or should I just write a script which (for example) check /proc/mounts and execute it from crontab? I am curious if it can be done with "standard" linux services (automounter?) ;) Best regards, Rafal Radecki.

Hi All. I plan to use virtualization in my production environment. I plan to use one of the following options: - KVM; - VMWare Esxi; - VMWare Workstation. I plan to install Windows 2008 as a guest. I want to use something like LVM snapshots for backups. Stability is also very important, the guest will be used as a production server. Which option could You recommend and why? Thank You very much

Hi All. I am trying to install some software. Part of its installation is an invocation of command similar to: # sudo -H -E -u postgres /bin/bash -c /usr/bin/python2.7 /bin/bash: /usr/bin/python2.7: Permission denied >From my perspective: # ls -l /bin/bash /usr/bin/python2.7 -rwxr-xr-x. 1 root root 960376 Jul 8 2015 /bin/bash -rwxr-xr-x. 1 root root 7136 Oct 11 2015 /usr/bin/python2.7

Hi All. I have installed Citrix XenServer. It's Linux-based virtualization software. Could anyone propose a good way to make backups of virtual machines (Linux/Windows) in it? With regards, R. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100205/7d5b513a/attachment-0001.html>

Hi all. I am currently thinking about monitoring a network link (bandwidth, latency, packet drop). I have a centos server which is connected to providers network through a switch. How to test the link? Should I: - use ICMP to ping gateway and collect staistics of time/packet loss/etc. - use software like here: http://www.cyberciti.biz/faq/linux-unix-windows-monitor-outgoing-bandwidth-latency/

Hi all. I am thinking about installing memcached with replication, I've found http://sourceforge.net/projects/repcached/files/repcached/2.2.1-1.2.8/ but it is for 1.2.8, and for Centos 6.3 memcached is in version 1.4.4. I do not want to use client side "replication" (writing to two memcached nodes at the same time) and haven't found other solution. Are there any good, protocol

...information: setfattr -x trusted.glusterfs.volume-id /gluster setfattr -x trusted.gfid /gluster rm -rf /gluster/.glusterfs - rsync data from master to slave; - start gluster and create a volume with data in rsynced /gluster directory. Are there any pitfalls I should know about? Best regards, Rafal Radecki.

...(production servers). Two nodes have a replicated volume and the both mount it using glusterfs. What are your experiences with gluster 3.3? Is it stable? Have you had any serious problems? I do not have much experience with gluster and would like to avoid problems if possible. Best regards, Rafal Radecki.

Hi All ;) Is there an option to compact large mbox files from the shell? I did not find anything in google, I have some very large constantly updated mbox files and would like to know if they can be made smaller with any tool. AFAIK mutt does such operation when for example an email is deleted but I am curious if there are other options. BR, Rafal.

Hi All ;) I need a good tool to backup whole system on block level rather than file level and easy to use. I currently need to backup to an USB disc (50+ GB of data) a system and then reinstall it. In the future if needed I will revert to the system from backup ;) What can you recommend? BR, Rafal.

Hi All. I've used syslog-ng for some time. I like it. I have a project in which I need to choose a central logging solution. What are your experiences with rsyslog? Is it more complex to setup than syslog-ng? Or maybe does it have some additional features? I am also thinking about using some gui tools for log parsing and graphing. May be proprietary/paid. Any suggestions? Best regards,

Hi all. I am currently installing drbd on Centos 6.3 x86_64 and have two possible repos to choose. Which one in your opinion is better/provides more stable packages/etc.? Best regards, Rafal Radecki.

Hi All :) I need to check and possibly update openssl on my fleet of servers. I would like to avoid reboot if possible. I think that I can: - update openssl version with yum - check all daemon processes which are constantly running in the os, for example for sshd something like ldd `which sshd` | awk '/\// { print $3 }' | grep crypto | xargs strings | grep -i openssl to verify if the

...ction machine. Also I have some problems with running fsck (not enough RAM, problem with scratch_files option) and if the filesystem will need intervention I will be in a problematic situation. Which other mature and stable filesystem can you recommend for such large storage? Best regards, Rafal Radecki.

Hi All :) What is the best way to get a list of available security updates? I found several commands for that: 1) yum updateinfo list updates -q --security 2) yum list-security --security -q 3) yum --security check-update -q Based on the sample output below I think I can use any of the three with some awk to get a list of packages. yum updateinfo list updates -q --security FEDORA-EPEL-2014-0525

...I try a solution from http://www.scottalanmiller.com/linux/2011/06/20/working-with-nic-ring-buffers/ I get: ethtool -g eth0 Ring parameters for eth0: Cannot get device ring settings: Operation not supported So what is the proper way to make rx buffers larger in this situation? Best regards, Rafal Radecki. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20130718/5b65e69c/attachment-0006.html>