Questions tagged [pacemaker]

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).

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27 views

Preparing storage for DRBD

I am trying to set up high availability Linode server and using DBRD for data replication. I created primary partition using fdisk. But I get the error WARNING: Re-reading the partition table failed ...
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Pacemaker Apache SSL failed

Sorry for repeating ask question. I am so exhausted with SSL with pacemaker.. I tried my level best and I didn't found the solution. wget --no-check-certificate https://localhost/server-status --...
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pcs status shows online but pcs cluster status shows offline

I have a problem to communicate with my servers. currently i have 3 debian 9 server (server1,server2,server3). pcs status Cluster name: vipcluster Stack: corosync Current DC: server1 (version 1.1.16-...
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pacemaker resource don't start

i've red hat 7.2 cluster, the resource centengine dont start on 1 node, i dont know why Failed Actions: centengine-1_start_0 on xxxxxxxx 'not configured' (6): call=53, status=complete, exitreason='...
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pcs status command is showing failed resource actions. pcs resource cleanup is also not working, because they keep coming back

I have corosync and pacemaker configured in my environment but on pcs status, I keep seeing failed resources as shown below Failed Resource Actions: * vip03_monitor_10000 on vm01 'not running' (7):...
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CentOS 7 - GlusterFS & Pacemaker & Corosync

I try to install a little GlusterFS (for NFS) Cluster with CentOS High Availability. I have really no idea why it failed. I started multiple times from scratch. My problem is, that I can't see any ...
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107 views

pacemaker.log file is flooding with “Too many open files (24)”

My system is currently at Centos 8 and my /var/log/pacemaker/pacemaker.log file is flooding with GB of data and most of the error messages shows the below message. These messages are more than 1000 in ...
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65 views

Pacemaker with Corosync - healthcheck, endpoint monitoring

I have two CentOS VMs with Pacemaker and Corosync configured (with no-quorum-policy=ignore and STONITH enabled). On each machine are 3 application services and Nginx service (webserver). Pacemaker ...
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pacemaker resource cannot run anywhere but debug-start always success

My pacemaker cluster has several Virtual IPs and haproxy service. After restart pacemaker/pcsd/corosync on all nodes again and again, these resources are all started then stopped. But I can debug-...
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98 views

Cannot activate Logical Volume which was managed by Pacemaker

I have two CentOS 7 servers that clustered with Corosync and Pacemaker to work in Active/Passive way. The whole idea was to move the mount point in case of a problem emerges in the active node. My ...
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How to use Apache resource by HTTPS in pacemaker?

I have a problem when i change apache url to HTTPS. Before the change every this working fine with http. Now my company need to use the Virtal ip by HTTPS. so that i didn't find any suitable tutorial ...
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Geo cluster - quorum vs Booth

I configured a geo cluster using pacemaker and DRBD. The cluster has 3 different nodes, each node is in a different geographic location. The locations are pretty close to one another and the ...
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node in cluster does not stop resource after network interface is down

i have below scenario: two node cluster Debian 10 with pacemaker, corosync and crmsh shbk-1(node 1): ens36 10.10.10.5 shbk-2(node 2): ens36 10.10.10.10 virtual_ip: 192.168.1.67 (it set on ens36) /...
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Unable to write/mount disks with iscsi reservation and multipathd. Using Pacemaker and iscsi fence agent

I have two iscsi target servers in a pacemaker cluster connected to a Dell MD1200, I can get the scsi reservations recorded with the multipath.conf key configured in each server, but I can't write to ...
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PCSD simple Master/Slave will not fail master over

I am trying to write a trivial pacemaker Master/Slave system. I created an agent, it's metadata follows: elm_meta_data() { cat <<EOF <?xml version="1.0"?> <!DOCTYPE ...
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After the compute reboot, the instances can not boot up

I did some upgrade in the Qemu and libvert packages for a compute hosting VMs. The focus was to make sure that the VMs doesn`t crash after getting removed from the network. However, after doing the ...
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35 views

Pacemaker Corosync OCF Resource Lifecycle

I have been currently asked to setup Pacemaker Corosync and this is entirely new for me. I currently have a 2 node cluster. And what I want to do is to reassign the IP to the other node if active node ...
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60 views

Pacemaker does not boot service after node switch

I am using two virtual Ubuntu servers (latest long-term) and both have equal configuration, and are running Squid services and pcs pacemaker corosync. I have two nodes Squid01 and Squid02 with one ...
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238 views

SQL Server with Pacemaker on Ubuntu 18.04, 'Resource must be configured with notify=true'

I am trying to configure Pacemaker on 3 Ubuntu machines and I am following Microsoft's instructions When done with all the cluster node are blocked and non of the resource is starting. The error I ...
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152 views

Squid Proxy .pid file disappears after few seconds on startup

I have two virtual Ubuntu Servers which are equal and both have Squid Proxy on them. The problem is that Squid on server startup creates .pid file, but after 10-20 seconds it disappears and I have to ...
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1answer
209 views

How to extend Active-Active cluster with FreeNAS as shared storage?

I have two physical nodes powered by Ubuntu and connected to each other with Corosync. And I have the FreeNAS server as NAS. This NAS server mounted on every node - basic scenario. Now I'm not able ...
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444 views

Pacmaker can't start the DRBD Error “not configured”

I´m setting up a 3 node DRBD Cluster with Pacemaker and corosync on CentOS 8. I set up 3 IP resources, 1 apache webserver resource and now I want to set up my drbd resource. The Drbd is working if ...
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High avaibilty openstack port duplicate?

I have follow this book: https://docs.huihoo.com/openstack/docs.openstack.org/ha-guide/HAGuide.pdf And also the docs from openstack: https://docs.openstack.org/ha-guide/control-plane-stateless.html ...
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494 views

Corosync and pacemaker node names do not match (IPs used in setup?)

we have pcs cluster setup on centos7. We are getting below warning WARNINGS: Corosync and pacemaker node names do not match (IPs used in the setup?) I have already tried solutions from the below link ...
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342 views

corosync/pacemaker/fencing - passive/active cluster with 2 nodes

I'm configuring a cluster 2 nodes with pacemaker/corosync, and I have some question about it (and maybe best practice : i'm far to be specialist) **OS:** redhat 7.6 I configurated the cluster with ...
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374 views

NFS cluster corosync + pacemaker + drbd

I made up a NFS cluster with pacemaker DRBD and corosync with two nodes everything was working fine, on my tests trying different fail over scenario my cluster is completely broken, I can't no more ...
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397 views

How to make clone resource start after a specific resource starts in Pacemaker?

I have a master/master configuration which has 2 public IPs (1.1.1.66, 1.1.1.70) which are shared between 2 nodes. The idea is that both nodes have one public IP each. And if one of the nodes goes ...
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729 views

pacemaker won't start because duplicate node but can't remove dupe node because pacemaker won't start

OK! Really new to pacemaker/corosync, like 1 day new. Software: Ubuntu 18.04 LTS and the versions associated with that distro. pacemakerd: 1.1.18 corosync: 2.4.3 I accidentally removed the nodes ...
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274 views

Linux RHEL cluster

I'm trying to setup a PCS cluster on two nodes running Red-hat, and did successfully, I want to setup syslog server (rsyslog) in Active/Passive mode. I created the cluster and added the resources, I ...
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315 views

pacemaker IP and MAC failover

I am setting up a system with two redundant servers, where one is an active one. If the active server goes down or is not reachable the other server has to become active. All the services are ready so ...
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187 views

Pacemaker split-brain timing of resource start and stop

I am testing a two-node cluster and testing various split-brain scenarios. It is all working fine, with resources doing what I would expect, except I am wondering about timing in a particular case. ...
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415 views

Docker container failed to run with pacemaker resource agent

I have a 2 node cluster configured on CentOS 7.6 with latest docker and pacemaker packages. I am currently trying to provide HA for couple of containers but after configuring pacemaker resource ocf:...
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994 views

How to control a service from Linux pacemaker cluster?

I have set a two node cluster on two RHEL7 virtual machines. I'm using pacemaker as my HA management software. I creates one resource for VIP and another resource for a shared FS. VIP and FS resources ...
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196 views

Corosync pacemaker Ipaddrr2 findIf failing

I've a cluster setup with 3 nodes [having nodes A,B (VIP),C] using pacemaker and corosync. When I pull network cable one of the nodes B intentionally (as a disaster recovery test), the node A or C ...
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286 views

DRBDManage with Pacemaker on CentOS 7

I have 2 CentOS 7.6 nodes which I have configured with drbd, drbdmanage and pacemaker for active/passive failover. during a failure my vip and drbd service failover from primary to secondary the next ...
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111 views

How to run multiple instances of the same service in Pacemaker cluster

I need to set multiple application instances groups (vip, service, iscsi disk) colocation so each group runs at the separate cluster node. I know that Pacemaker offers group attributes and rules for ...
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473 views

Default intervals, timeouts, etc., for Pacemaker resource operations

Pacemaker resource agents mention default values for their operations' timeouts, intervals, etc., in their metadata. For instance, crm_resource --show-metadata=ocf:heartbeat:IPaddr2 lists some: <...
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Pacemaker Corosync VIP switches when node is brought online

I've a cluster setup with 3 nodes [having nodes A,B (VIP),C] using pacemaker and corosync. When I shutdown one of the nodes B intentionally (as a disaster recovery test), the node A or C takes VIP but ...
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519 views

Resources are UNCLEAN when I unplug the preferred node

I'm very beginner within linux network configuration I configured linux pacemaker + corosync + stonith via ssh + drbd + nginx for 3 nodes. pcs status: 3 nodes configured 7 resources configured ...
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systemd service in pacemaker for high availability

I came to know about the pacemaker for high availability. I have one simple service running on linux VM. I have started that using systemctl start <service name> command. I want to make this ...
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Is it possible to prevent pacemaker from stopping resource in old node, while starting the resource in new node?

we collect heap dumps of the resource on failed node, before restarting the resource. However, to minimize the downtime (as heapdump collection taking time), I'm checking if it is possible to start ...
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861 views

Pacemaker/Corosync resource cleanup causes restart on Ubuntu (any version)

I'm having an issue with a pacemaker/corosync (2 node) cluster on Ubuntu (12.04 / 14.04 / 16.04 and 18.04) and couldn't find anyone else describing this issue. There are two ressources: res_ip (...
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448 views

Corosync caused a 100% CPU load after a node disappeared. How to fix it?

A general setup (the very first for me) of Corosync + Pacemaker is made upon 4 Virtual Servers with a VirtualIP, a private network is organised with a help of OpenVPN. corosync-2.4.3-4.el7.x86_64 ...
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406 views

issue with pacemaker ipaddr2 and IPsrcaddr

I'm having trouble with setting up a cluster which contains two nodes. I want to setup a cluster with two centos nodes with a floating ip address and all packet which sends out from my active cluster ...
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405 views

Postfix not sending mail using specific outgoing ip address

I have a cluster set-up using pacemaker/corosync and have some fail over IPs set-up. I have designated postfix to use ome of those failover IPs using:- smtp_bind_address = aa.bb.cc.dd in main.cf ...
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Cluster a custom application

I have a custom application which is written by java. I want to know is it possible to cluster this application by pacemaker. For example copy this application in two different nodes and setup a ...
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103 views

Problems Installing Pacemaker in AWS Amazon Linux

I am trying to install Pacemaker in my Amazon Linux and I couldn't find it in the repo anymore following this tutorial with sudo yum install pacemaker. i then further search and found this, and to no ...
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842 views

Pacemaker - Colocation constraint moving resource

I am encountering an issue with colocation constraints. I have created a 4 nodes cluster (3 "main" and 1 "spare") with 3 resources, each resource should run only on its own node or on the spare and ...
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336 views

Pacemaker, corosync delete

I've got Pacemaker in conjunction with Corosync on two nodes and two float ip. Now I need to delete this construction. What is the best way to stop Pacemaker and Corosync and delete them?
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configure pacemaker for galera

I have a galera / mariaDB cluster of two nodes on two remote sites that works perfectly. I want to set up a solution that would pause one of the two servers / node if the ping to an external IP was ...

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