Pacemaker achieves maximum availability for cluster services by detecting and recovering from node and service-level failures. It achieves this by utilizing the messaging and membership capabilities provided by your preferred cluster infrastructure (currently either OpenAIS or Heartbeat).
Questions tagged [pacemaker]
297 questions
2
votes
1 answer
pacemaker virtual ip loadbalancing with clone and clusterip
I am trying to make a loadbalanced gateway for a group of natted machines.
I have 3 centos nodes. Initially only one node was supposed to have the internal gateway ip and that works well. Traffic flows.
Then, Im trying out loadbalancing the gateway…
strzelecki.maciek
- 189
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- 11
2
votes
0 answers
Pacemaker on a single-node RHEL-6 system
I am running pacemaker(1.x) and corosync on a single node system. I need it to configure in a way that if any resource does not start i.e. it has reached its maximum threshold then the pacemaker should stop all other resources as well.
For…
pranjul arora
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2
votes
1 answer
Get IP of node running a specific resource when demoting master nodes to slaves
Setup
I am setting up a HA cluster for a web application with 2 nodes (2 physical servers):
node1 (current master node)
node2 (current slave node)
Using Corosync & Pacemaker I was able to create the cluster and some resources agents including an…
Habovh
- 271
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- 12
2
votes
1 answer
Can not start PostgreSQL replication resource with Corosync/Pacemaker
I'm setting up a PostgreSQL replication on two servers (CentOS 6.5) with HA by Corosync/Pacemaker.
My software…
cuongnv23
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2
votes
0 answers
Why new two node cluster not behaving right?
I’m trying to create cluster of two nodes, but it seems to behave a little strange following this guide, but I was unable to do, for example:
[root@afnA ~]# pcs property set stonith-enabled=false
Error: Unable to update cib
Call cib_replace failed…
Steffen Winther Sørensen
- 176
- 6
2
votes
0 answers
SLES 12 High Availability Cluster - scsi persistant reservation fencing
I'm trialling SLES 12 w/ HAE to run a Fileserver cluster consisting of two nodes.
Idea was to use SCSI persistant reservation as a fencing method using the fence_scsi script from stonith fence agents.
Two nodes (a, b) are connected via FC to the…
vobelic
- 193
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2
votes
0 answers
Is it possible to prevent pcs/dlm/crm from fencing the node when it fails?
Is it possible to prevent pcs/dlm/crm from fencing the node when it fails?
I use cluster only to be able to build GFS2 storage, and there's my own way of avoiding split-brain. So I do not need things like fence and dlm-locks.
I tried to config the…
Blangero
- 21
- 3
2
votes
0 answers
monitor of systemd resource with pacemaker & corosync returns "not running" when cloned while it is
The setup:
- OS: CentOS 7, latest versions op Corosync, Pacemaker & PCS
- two node active/active cluster with a virtual IP
- on both nodes Exim is running for outoging mail (SMTP), nothing special in the config
- when Exim fails on one of the nodes,…
jensd
- 141
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- 3
2
votes
3 answers
Debian 7: HA NAS with pacemaker, drbd and iSCSI
I currently am trying to make a highly available NAS under debian 7.
I am using following packages:
drbd8-utils
iscsitarget
iscsitarget-dkms
pacemaker
corosync
openais
everything works fine without pacemaker (so…
Zawarudio
- 31
- 5
2
votes
2 answers
corosync pacemaker crm status show DC : none and offline
i'm new to corosync and pacemaker and try to build cluster by using vm node1 & node2. here is the /etc/corosync/corosync.conf
# Please read the corosync.conf.5 manual page
compatibility: whitetank
totem {
version: 2
secauth: off
…
hkguile
- 398
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- 22
2
votes
1 answer
Corosync 2.3.3: Unable to enable cipher
I'm trying to set up a new pacemaker/corosync stack of 2 machines.
I was using it before with corosync1, but on Ubuntu 14.04 I've got corosync 2.3.3
OK - I said, and tried to use this version of software.
When i Prepare basic configuration with one…
Lisek
- 309
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- 7
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2
votes
1 answer
Can no longer add VMs on Xen/DRBD/Pacemaker Cluster
OS: Debian 7.3 & 7.6
Problem:
Every attempt to manipulate (create, migrate or even list) the VM's with virsh causes this "Failed to get host power capabilities" warning. I manage a standalone Xen virtual host which produces the same warning &…
Eamonn Travers
- 614
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2
votes
1 answer
Simple fencing/STONITH script in Centos 7
I am installing a simple Corosync/pacemaker/drbd high availability cluster using Centos 7 and would like to provide fencing/STONITH using custom hardware (power switches using USB connections). As such, I need to add these devices as STONITH…
C-Otto
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2
votes
0 answers
High Availability/failsafe two different locations
I am wondering if someone could help with the setup that does not seem so difficult. I am just beginning with the multi-server setup. I apologize if my questions are dumb.
I have two debian servers in different locations. The aim is to create a…
Fyodor Dostoyevsky
- 21
- 1
2
votes
1 answer
crm resource cleanup command in pcs?
Is there an alternative command for crm resource cleanup in the pacemaker configuration system? I got the following error message from pcs status and I found on different sites, that a crm resource cleanup would solve the problem. If…
user191159