Questions tagged [pacemaker]

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Apache fails to load when SSL activated through Pacemaker

I have setup a cluster on Pacemaker holding: apache, mariadb, 2x GFS2, and a VIP Everything was working fine when running on http but as soon as I added the (self-signed) SSL certificate and the ...
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25 views

PCS resource stopped - partition without quorum

I had configured a resource with pacemaker between two hosts (serv11 and serv12). The resource was running in serv12 as master but the system burned out and cannot be restored, so I want to move the ...
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1answer
38 views

Pacemaker + Corosync + DRBD + Samba + NFS

Hello everybody, i am trying to setup a 2 PC cluster with shared resources ClusterIP, ClusterSamba, ClusterNFS, DRBD (cloned resource) and a DRBDFS.The beginning of the project was made following the ...
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2answers
22 views

Linux Pacemaker: Resource showing as “unrunnable start (blocked)” has been created

We are using SLES 12 SP4 We have observed few things from the today testing. Following are the steps: Step 1: When we create kernel panic (on Node01) with the command “echo 'b' > /proc/sysrq-...
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1answer
57 views

DRBD: “Couldn't mount device [/dev/drbd0] as /mydata” when failing over or rebooting node

I'm creating a cluster system using two ESXi hosts, with a CentOS 7 server on each. Going through I created the filesystem, and it mounts on node1. When I perform a standby or reboot from node01 to ...
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22 views

Linux Pacemaker, Individual resources are running but problem occurs when I group them

Operating System: Suse Linux for SAP Applications 12 SP4 Number of Cluster Nodes: 2 We have two resources pri_apache2_1 & ip_apache2_1_132, these two resources are running fine. But When I ...
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103 views

Pacemaker RHEL 7 - Oracle Listener stopped on Failover

We have two node cluster using a shared storage (HA-LVM) for Oracle Database. And i created following resources stgdbfence1 (stonith:fence_vmware_soap): Started RTG-STGDB-01.gulfpc.com ...
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158 views

Pacemaker handling of split brain scenrio

Environment: Pacemaker 1.1.19 and corosync 2.4.3 in centos 7.5. I have a resource web-server running on node A(primary ) and node B being the secondary node. below is the configuration for the same. ...
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82 views

Mysql master/slave promotion of resources with Pacemaker not working

I'm trying to get a master/slave setup working with Pacemaker. However, I ran into a few problems. For some things I found a solution. I would like to have some feedback on this, because the official ...
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1answer
441 views

CentOS 8 - Clustered File System

In my environment, I have a need for a shared disk between two application servers such that changes on Server A are immediately available on Server B. Historically, I have solved this issue by ...
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0answers
55 views

Unmount data volume hosting NFS exports

So I've got a customer with two NFS server setup in a pacemaker cluster active/standby configuration. It is a legacy system running RHEL6. On the servers there is /mnt/data1 which is an xfs mountpoint ...
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240 views

Stonith resource not working

I am trying to set up a storage cluster with two nodes, both running debian buster. The two nodes called, duke and miles, have a LUN residing on a SAN box as their shared storage device between them. ...
1
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1answer
387 views

Pacemaker: Primary node is rebooted and comes back is primary instead of standby

We are using pacemaker, corosync to automate failovers. We noticed one behaviour- when primary node is rebooted, the standby node takes over as primary - which is fine. When the node comes back ...
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0answers
108 views

Failover using pcs causes DRBD disk get unavailable on source server “No such resource”

I am working on DRBD, PCS to run a 2 node cluster. With the config virtual_IP and DRBD disk works fine on first node. Then I test the failover with "pcs cluster stop" on master, the disk and virtual ...
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1answer
654 views

Pacemaker Virtual IP cannot be routed outside of its network

I have a server cluster consisted of following setup: 2 Virtual Servers with 2 NIC's. eth0 (private network 10.0.0.0/16) and eth1 (public network 77.1.2.0/24 with gateway as 77.1.2.1) For HA-01 VPS ...
2
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1answer
886 views

PCS Stonith (fencing) will kill two node cluster if first is down

I have configured a two node physical server cluster (HP ProLiant DL560 Gen8) using pcs (corosync/pacemaker/pcsd). I have also configured fencing on them using fence_ilo4. The weird thing will happen ...
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1answer
173 views

Pacemaker: stopping pacemaker doesn't always move resources to other node

I have created a 2 node cluster on sles12. Following is the configuration - msnode1:~ # crm --version crm 3.0.0 msnode1:~ # corosync -v Corosync Cluster Engine, version '2.3.6' ...
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663 views

Pacemaker cluster service can't start properly Couldn't mount filesystem

I have 3 nodes MySQL cluster on RHEL 7.5 with DRBD, Pacemaker and after start cluster getting following error. How can I overcome ? [root@db1 ~]# pcs status Cluster name: mysql_cluster Stack: ...
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0answers
185 views

Adding (cifs, samba)Filesystem resource to PCS

I am trying to create PCS resource Filesystem on Samba share(cifs) file system type. Here is a command that I have used to create pcs resource. root@shaunak-VirtualBox:~# pcs resource show ...
1
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1answer
3k views

quorum in a two-node cluster with pacemaker

I have two node active-passive cluster. Clusters_from_Scratch If a cluster splits into two (or more) groups of nodes that can no longer communicate with each other (aka. partitions), quorum is ...
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1answer
547 views

split-brain recovery with crm-fence-peer script

I implemented DRBD resource level fencing with crm-fence-peer.9.sh and crm-unfence-peer.9.sh scripts on both nodes. Now, I have the following situation on my lab nodes: both nodes otrs1 and otrs2 ...
1
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1answer
725 views

After failover Pacemaker moves resource back when node comes back

I'm using Pacemaker & Corosync for my cluster. When a node dies pacemaker moving my resources to another online node. Everything ok here. But when the dead node comes back, Pacemaker moving the ...
1
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1answer
127 views

When I start corosync all servers panics with core dumps

I upgraded my servers. Then I started corosync service one by one on my servers. I started first on 3 server and I wait 5 min. Then I started next 4 corosync on other servers and 7 server crashed in ...
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1answer
716 views

putting standby node online results in drbd split brain

I have 2 node cluster on pacemaker/corosync running on scientific linux 6. drbd is running on both nodes master=node1 slave=node2. When i put the slave node2 on standby and then back online everything ...
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1answer
1k views

Apache resource failed to start in Pacemaker

I am using Pacemaker with Corosync to set up a basic Apache HA cluster with 3 nodes running CentOS7. For some reasons, I cannot get the apache resource started in pcs. Cluster IP: 192.168.200.40 # ...
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2answers
5k views

pcs cluster not moving resource when instructed to move

for whatever reason I'm no more able to move resources with pcs pacemaker-1.1.16-12.el7_4.8.x86_64 corosync-2.4.0-9.el7_4.2.x86_64 pcs-0.9.158-6.el7.centos.1.x86_64 Linux server_a.test.local 3.10.0-...
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1answer
1k views

data sync in a active-passive pacemaker cluster

I'm planning to use pacemaker with corosync and pcs to provide HA in a active-passive cluster for our two front end servers serving a perl application. I have configured resources for the service IP, ...
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2answers
76 views

Extra Ip address assigned in one of my nodes on redhat cluster. How can I get rid of it?

I have a cluster that is not running properly. While doing something it added an extra Ip address which is not supposed to be there. Since this is generated by the cluster (not in network-script) ...
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1answer
1k views

Corosync/Pacemaker pcs equivalent commands to crm

I know crm utility command has been people's preferred method to manage clusters when it comes to High Availability with corosync & pacemaker. Now, its been deprecated and we are told to work with ...
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1answer
237 views

Are there implicit constraints for resource groups in a pacemaker cluster?

According to redhat's official documentation, all resources in a resource group implicitly have colocation and order constraints. But from the tests i did in my lab setup i can't see any constraints ...
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1answer
2k views

RHEL High-Availability Cluster using pcs, configuring service as a resource

I have a 2 node cluster on RHEL 6.9. Everything is configured except I'm having difficulty with an application launched via shell script that created into a service (in /etc/init.d/myApplication), ...
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2answers
5k views

pcs stonith not working

i have 2 virtual centos7 nodes , root can login passwordless among themself, i have configured stonith like this but the services are not coming up, fencing is not happening , im new to this, could ...
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1answer
4k views

How to monitor the Pacemaker cluster using a script?

I have created a two node cluster (both nodes RHEL 7) using pacemaker. It is used to run a custom application. I have created below resources and assigned it to the cluster: A shared storage for ...
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1answer
889 views

Pacemaker doesn't failover

node $id="10" db10 \ attributes standby="off" node $id="9" db09 \ attributes standby="off" primitive drbd_jenkins ocf:linbit:drbd \ params drbd_resource="r0" \ op start interval="0s" ...
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1answer
429 views

Best way to set up fence_vmware-soap on centos7

I have two node cluster providing nfs services. using pacemaker and corosync. both nodes are using a shared lun. I created a vsphere user and set up two fence_vmware_soap fence agents. one on each ...
2
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1answer
657 views

Pacemaker Promote Groups in Specific Order - Or Specify start last

I have a group in Pacemaker which I need to start last. Ideally I'd like to know how to configure groups to start in an specific order, but I can't seem to figure it out, not sure if its possible. ...
1
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1answer
854 views

Pacemaker: stopping resource after it migrate N times due to failover

I have a configuration with 5 nodes, 4 able to host resources and 1 resource. What I want to do is to make the resource stop completely after migrating N times from node to node. So a sample scenario ...
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0answers
4k views

Pacemaker - Corosync - HA - Simple Custom Resource Testing - Status flapping - Started - Failed - Stopped - Started

I am testing using the OCF:Heartbeat:Dummy script and I want to make a very basic setup just to know it works and build on that. The only information I can find was this web blog here. https://...
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1answer
6k views

IP Source Address issues with PaceMaker Virtual IP

I am having trouble setting up a Virtual/Floating IP. In this specific circumstance I am using Pacemaker+Corosync to manage 2 Virtual IP's. One is internal and the other is external to our SIP Trunk. ...
1
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2answers
1k views

MySQL Server monitor_20000 on node1 'not running' - HA Cluster - Pacemaker - Corosync - DRBD

I get this Error after finishing configuring cluster. And after trying to fail-BACK from node2 mysql_service01_monitor_20000 on node1 'not running' (7): call=20, status=complete, exitreason='none' ...
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1answer
513 views

Xen + DRBD + Pacemaker on Centos7

So my current environment is centos7 on a pair of identical bare metal servers. I've installed drbd and carved up 3 x 100G block devices for DRBD to mirror. Then I installed a Centos7 image on one of ...
2
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1answer
1k views

MySQL DRBD Resource failing to start PaceMaker + Corosync

So I have gotten to the point where I had all services running when I configured the cluster, but after reboot I am getting the following : Full list of resources: virtual_ip (ocf::heartbeat:...
1
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2answers
6k views

Corosync error “No interfaces defined” in a cluster member

I am having an error starting corosync on a cluster member: May 16 00:53:32 neftis corosync[19741]: [MAIN ] Corosync Cluster Engine ('2.3.4'): started and ready to provide service. May 16 00:53:32 ...
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1answer
7k views

DRBD - 'node1' not defined in your config (for this host) - Error when setting Primary [closed]

I am getting the following error when trying to set the Primary node for DRBD. 'node1' not defined in your config (for this host). I know this is related to DNS/Hostname/Hosts and the config ...
1
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2answers
7k views

Trouble Creating Virtual_IP for PaceMaker + Corosync - CentOS 7

Ok so I have gotten fairly far into the configuration successfully, the two nodes have authenticated each other and all is well, but when I try to add the virtual_ip it never starts. What i've used ...
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1answer
823 views

PCS and corosync/pacemaker

A simple and fast question about pcs. With this command pcs resource create NameService named op monitor interval=30s I create a resource named,wich is working,but if i want to run named -u named -t ...
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1answer
1k views

CIB not supported: validator 'pacemaker-2.0', release '3.0.9'

I am trying to make two node clusters with pacemaker and corosync. When I want to change config with crm I get the following error: CIB not supported: validator 'pacemaker-2.0', release '3.0.9' I ...
1
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1answer
1k views

RedHat cluster with rgmanager or pacemaker as resource manager on Oracle VirtualBox

I'm learning RedHat cluster and I have setup a 3 node cluster (Centos 6.7), corosync, cman and rgmanager on Oracle VirtualBox version 5.x. The cluster is working fine (the clustat commmand shows that ...
3
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1answer
1k views

Clustered NFS server reply ERR 24: Auth Bogus Credentials (seal broken)

I have 4 servers on the VirtualBox. Two of the servers are a CentOS 7 cluster with Pacemaker(corosync), and they have an NFSv4 server in Active/Passive mode. There are also 2 clients with CentOS 6, ...
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0answers
398 views

Pacemaker 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 ...