similar to: does anyone have experience with clusters?

I have an existing in-production LAMP server running Centos 5.1. It uses physical partitions on top of hardware RAID1, having / /home /var and /boot on separate partitions. We have a near-identical system I am thinking of bringing in as a DRBD/Heartbeat companion. One solution may be to use csync2 [http://oss.linbit.com/csync2/] on /etc and /usr/local (the only areas that will differ from

Hi, We are using the heartbeat and drbd packages from latest centos (4.3) extras repository. Upon installation of both packages I noticed that if you "chkconfig heartbeat off" that will cause drbd to chkconfig'ed on. And visa versa. After doing some trouble shooting it turns out the "BEGIN INIT INFO" sections appear to be the cause. drbd has: ### BEGIN INIT INFO #

Hello all, has someone worked with DRBD (http://www.drbd.org) for HA of mail storage? if so, does it have stability issues? comments and experiences are thanked :) Thanks, Rodolfo.

Hello, I am trying to figure out the best way, how to configure a small cluster with xen and High Availability (Heartbeat). I have two servers and a few virtual machines. What I need is to ensure, that images or partitions of the machines will be mirrored between the two nodes (maybe with drbd?). But that is not all - I also need to enlarge the disks (because of growing databases) of virtual

Hi, I want to upgrade from 8.0 to 8.1 but yum update does not work. Still 8.0 Probably the cause is that I compiled DRBD myself because it was not available for 8.0 when I set up the machine. Now yum update says: Error: ?Problem 1: cannot install the best update candidate for package drbd-pacemaker-9.11.0-1.el8.x86_64 ? - nothing provides pacemaker needed by

hi, I was following this wiki http://wiki.centos.org/HowTos/Ha-Drbd for my CentOS 5 installation, but it appears that the kmod-drdb is not for the newest kernel. Would anyone know how long before this is updated? kmod-drbd i686 8.0.6-1.2.6.18_8.1.14.el5 extras kernel i686 2.6.18-8.el5 installed

Hi all, Just reading through Luke''s interview on computerworld.com.au and I came across this statement: "This topic comes up on the list periodically, however, and most people are very tight-lipped about what they''re doing with Puppet." Being the chattermouth that I am, I''d like to take this opportunity to tell you all what we''re (that is, my

Hi We've got drbd going between 2 nodes:) ATM there is un-partitioned space on each node but (we think) they are syncing OK. It looks as though it has synced the whole partition (2GB) from the primary node 1 to the other node: node 1 smb1:/home/steve # cat /proc/drbd version: 8.4.4 (api:1/proto:86-101) GIT-hash: 3c1f46cb19993f98b22fdf7e18958c21ad75176d build by SuSE Build Service 1:

Hello all, At our office a have a server running 3 Xen domains. Mail server, etc. I want to make this setup more redundant. There are a few howtos on the combination of Xen, DRBD, and heartbeat. That is probably the best way. Another option I am looking at is a piece of shared storage, a machine running CentOS with a large software RAID 5 array. What is the best means of sharing the storage?

Hi all, I am using heartbeat and drbd on CentOS 5 (see http://www.centos.org/modules/newbb/viewtopic.php?topic_id=7816&forum=41 for details).. DRBD and heartbeat are working, and now I want to put GNBD on top on this. However, I installed the latest CentOS-plus kernel (2.6.18-8.1.8.el5.centos.plus) but there doesn't appear to be a kmod-gndb for this kernel. Looks like the latest

Hello, I'm testing a HA cluster using Heartbeat and DRBD. I've moved /etc/samba /var/log/samba /var/run/samba and /var/cache/samba to the shared DRBD volume. My problem is that I don't know if these are the only files I should move in the shared volume, I can't find a doc listing all the files used by Samba. Are there other files I should move to the shared volume so that the

Anyone using either Glusterfs or DRBD in their mail setup? How is performance, manageability? Problems? Tips? Ed W

Hiya, I'm new to Centos but learning rapidly but I have been using FreeBSD. I'm trying to setup a HA NFS server using 2 machines. Both machines are running 4.3 updated to the latest via Yum. I did yum groupinstall drbd-heartbeat and yum install kernel-module-drbd-kernel-module-drbd-2.6.9-34.EL to match my kernel. The problem I have is that on 1 machine drbd works fine, but when I start

Hi Folks, Anybody have any recent experience building a small cluster that combines GlusterFS and Xen (with bonus points for a Debian environment)? We''re getting ready to shift from a 2-node Xen/Pacemaker/DRBD environment to a 4-node environment - and I''d really like to be able to create/migrate/failover/delete VMs transparently across all 4 nodes. Seems like Gluster might

Short story: Would it be possible to get kernel-debuginfo-2.6.9-67.0.20.EL.x86_64.rpm on di.c.o? I have a need to run crash on a 2.6.9-67.0.20.ELxenU xm dump-core. Long story: Two Dell 6950 (now called R905, 4 Dual-Core AMD Opteron 8200 series) heartbeat/drbd nodes running the stock CentOS 5.2 Dom0. The domU's are the only resources in heartbeat. Dom1 is a perfectly running, updated, CentOS

I'm creating a firewall HA cluster. The proof of concept for the basic firewall cluster is OK. I can bring up the cluster, start the iptables firewall, and move all of this with no problem. I'm using Conga to do all of this configuration on Centos 6.3 servers. To extend the "HA" part of this, I'd like to use bonded channels instead of plain old NICs. The firewall uses

Hi everyone, I need some help to setup my configuration failover system. My goal is to have a redundance system using Xen + DRBD + Corosync + Pacemaker On Xen I will have one virtual machine. When this computer has network down, I will do a Live migration to the second computer. The first configuration I will need is a crossover cable, won''t I? It is really necessary? Ok, I did it. eth0

Dear mailing list members, There was a branch about clusters, but I have a certain task. There are two servers with CentOS 5.5 installed. The servers are working with Zabbix (monitoring system for traffic, using a MySQL), wiki and RT (all are using Apache). If one server will have became not available then necessary start these services on another server with replication of data. Can I use

Hi all, In threads posted by I believe Jonathan Tripley I promised to post my new XEN HA setup. Hope it can be of some use to some people. In this particular case I''m forced to use SLES 10SP3 with XEN 3.2, which excludes the possibility of using things like cLVM (which I don''t think I need anyway). So: Storage: I use two HP ML370 G5 machines with DRBD and heartbeat on

Hello, While working on heartbeat/pacemaker for a web service stored on drbd, I've thought what I've learnt could also be applied to samba in order to build a fault tolerant file server in our domain. While digging samba's doc, I've found that CTDB could also fulfill the need and is maybe better suited as it's samba-related. But on the other hand, I'd appreciate to begin