similar to: Gluster - data migration.

Hi All. I have two servers ("master" and "slave") with a replicated gluster volume. Recently I've had a problem with slave and gluster does not work on it now. So I would like to: - stop and remove current volume on master (on slave it is not accessible); - stop gluster software on master (already stopped on slave); - remove gluster software on master and slave (previous

Hi All. I want to use mentioned version of glusterfs in a simple master/slave setup (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. I have currently a small problem to solve. I have a kvm virtual machine which in output of ifconfig eth0 | egrep 'RX packets|TX packets' RX packets:792681304 errors:0 dropped:560728 overruns:0 frame:0 TX packets:716661674 errors:0 dropped:0 overruns:0 carrier:0 show dropped packets. I think that rx buffer is to small (no strange messagess in dmesg) and would

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.

Hi All. I have a setup in which I have two servers serving nfs share. The nfs service is made highly available with pacemaker. When the primary server goes down the secondary starts nfs service. Service IP is floating between servers but they have NO "shared" storage/filesystem so NFS state/connection information in case of failover is lost. I have two clients. When the failover from

Hi all. I am currently building a small test cloud based on Eucalyptus 2.0.3 and CentOS 5.8 x64. I have a choice which hypervisor to use: KVM or XEN. KVM is the default in CentOS 6 but I have read also many good things (for example PV guest machines, isolation between Dom0 and DomU) about XEN. Key factors from my opint of view are: - stability (which one runs more smoothly on CentOS?) -

Hi all. I am currently building a small test cloud based on Eucalyptus 2.0.3 and CentOS 5.8 x64. I have a choice which hypervisor to use: KVM or XEN. KVM is the default in CentOS 6 but I have read also many good things (for example PV guest machines, isolation between Dom0 and DomU) about XEN. Key factors from my opint of view are: - stability (which one runs more smoothly on CentOS?) -

Hi all. I am working for a hosting provider in Poland. We are currently searching for an universal, extensible hardware platform which we would like to use in our server infrastructure. The platform should have: - possibility to install up to 32GB of RAM and at least 4 slots for it; - at least 6 SATA ports; - the possibility to use SAS disks; - at least one 1Gb/s network interface and the

Hi all. I have two servers 2.6.18-308.4.1.el5PAE CentOS release 5.7 (Final) Both have two external gigabit network cards (installed Planet with Realtek r8169 chipset). lspci 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10) 04:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10) /var/log/messages May 3

Hi All. I currently have a problem with hostname and fqdn. I use: # cat /etc/redhat-release ; uname -r CentOS release 6.4 (Final) 2.6.32-358.11.1.el6.centos.plus.x86_64 # hostname srv1.devel.test.com # grep HOSTNAME /etc/sysconfig/network HOSTNAME=srv1.devel.test.com # cat /etc/hostname srv1 # cat /etc/domainname devel.test.com but # hostname --fqdn devel.test.com As I think it should

Hi all. I am currently gathering information about firmware update on Dell PowerEdge machines. I've found http://linux.dell.com/wiki/index.php/Firmware-tools_announcement and https://linux.dell.com/repo/community/ It is an unofficial, community supported repository. What are your experiences: should I perform firmware updates the traditional way by downloading *.bin packages from Dell and

Hi All. In curl manual: --ciphers -> "(SSL) Specifies which ciphers to use in the connection. The list of ciphers must specify valid ciphers. Read up on SSL cipher list details on this URL:http://www.openssl.org/docs/apps/ciphers.html" In openssl: http://www.openssl.org/docs/apps/ciphers.html#CIPHER_SUITE_NAMES there are names such as "SSL_RSA_WITH_RC4_128_SHA RC4-SHA" but

Hi All. I have a CentOS server: CentOS 5.6 x86_64 2.6.18-238.12.1.el5.centos.plus e4fsprogs-1.41.12-2.el5.x86_64 which has a 11TB ext4 filesystem. I have problems with running fsck on it and would like to change the filesystem because I do not like the possibility of running long fsck on it, it's a production machine. Also I have some problems with running fsck (not enough RAM, problem with

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

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

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'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 have currently a server: cat /etc/redhat-release CentOS release 5.7 (Final) uname -a Linux host.domain.com 2.6.18-274.18.1.el5 #1 SMP Thu Feb 9 12:45:44 EST 2012 x86_64 x86_64 x86_64 GNU/Linux I have there a filesystem mounted: /dev/vg0/paczki /home/paczki-workdir ext4 defaults,noatime 0 0 on which df gives strange output: LANG=C df -h

Hi All. I have an environment in which I would like to implement a GUI for parsing syslog-ng logs from operating system, application servers and databases. I've heard that Splunk is a good tool but its quite hard to learn. Are there any valuable alternatives? What are you using and why? Best regards, Rafal.

Hi All. I currently have a problem with proper invocation of a python script with cron. non-root $ crontab -l #Ansible: script_repo_scanner 55 11 * * * /usr/bin/python /path/script_repo_scanner.py --bb_user bb_user --bb_pass bb_pass --bd_log_dir /path/logs &> /path/script_repo_scanner.py.log And in /var/log/cron I see that cron executed the script but there is no log output in