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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29 views

Pacemaker error and warn log showing up in syslog rather than pacemaker.log

I created a ping check on pacemaker, like so: pcs resource create ping ocf:pacemaker:ping dampen=5s multiplier=1000 host_list=127.0.0.1 clone Used something other than 127.0.0.1 of course. Here's the ...
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21 views

Configuring STONITH on non-shared disk cluster

I have configured a 2 node (VMs) cluster with SUSE High Availability Extension. The cluster doesn't use shared disk. So Stonith is not really required. But the cluster keeps on asking for Stonith. So ...
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26 views

Pacemaker - Logging the result of a ping check?

I read this page and the next: https://clusterlabs.org/pacemaker/doc/deprecated/en-US/Pacemaker/1.1/html/Pacemaker_Explained/_moving_resources_due_to_connectivity_changes.html And it explains how to ...
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Add a server to an already running DRBD9 configuration

I am on CentOS7 and I have an existing two-cluster HA node running pacemaker (1.1.23-1.el7_9.1) and DRBD (kmod-drbd90-9.0.22-3.el7_9). The backing partition for the DRBD drive is LUKS encrypted. We ...
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30 views

Pacemaker Virtual IP is still pinging

I am having two node pacemaker cluster, with one virtual IP which is 192.168.3.100. The virtual ip is the part of cluster resource, when I stop the cluster using pcs cluster stop --all. I am still ...
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7 views

inter cloud based heterogenous cluster aws and oci

is it possible to configure apache2 in a heterogeneous cluster across 4 nodes while 2 nodes are in OCI and 2 nodes are within AWS ? node 1 os : ubuntu 20.04 running wordpress node 2 os : ubunto 20....
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113 views

Clustered vsftpd service stops working with no error log

We've got a pacemaker cluster of vsftpd server made of two nodes in a active/pasive scheme. We have experienced the following behaviour. vsftpd.log stops recording activity while xferlog keeps ...
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76 views

What is the Interaction of Timeouts and Intervals in Pacemaker Resource Monitor Operations

If I have a pacemaker resource like this: Resource: FoobarServer (class=ocf provider=foo type=bar) Operations: monitor interval=5m timeout=8m (FoobarServer-monitor-interval-5m) ...
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172 views

Failed configuring active-active shared disk with drbd and pacemaker

I followed Clusters from Scratch instructions, chapters 8 and 9, to configure an active-active, shared disk cluster with drbd and pacemaker. The difference with that tutorial is that I am using OCFS2 ...
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19 views

Is there a way to have pacemaker resource groups failover if all floating IP resources are unavailable?

I want to have multiple floating IPs in a resource group that will only failover if all IPs cannot work. Each floating IP is on a different subnet and can be used by the application I have. If a ...
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1k views

pcs creating cluster fails because of unknown hosts

I am following several tutorials now and all of them have such steps -- authenticate given hosts in pcs and then create cluster. Yet in my case the first step (authenticating) works while the second ...
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115 views

Corosync-Pacemaker no split brain

I'm trying to set up a cluster of two nodes using CentOS 7, Corosync, Pacemaker and pcsd. I can migrate resources manually from one node to another, but if I turn off primary node (by unplugging the ...
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460 views

How to control start and stop of libvirtd and virtlockd in pacemaker cluster?

Using indirect locks of virtlockd (which is used by libvirtd) requires to use a cluster-wide shared filesystem like OCFS2. In turn this means that virtlockd must be started after the shared filesystem ...
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61 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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621 views

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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469 views

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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203 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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627 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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105 views

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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35 views

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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43 views

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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1answer
86 views

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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2answers
135 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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1answer
132 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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2answers
460 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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686 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
355 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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1answer
1k 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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667 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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727 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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852 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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2k 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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457 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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600 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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2answers
384 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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1answer
744 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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1answer
3k 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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1answer
358 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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1answer
388 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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179 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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1k 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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454 views

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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1answer
977 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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2k views

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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89 views

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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1answer
2k 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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686 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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546 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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1answer
623 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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2answers
922 views

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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