Install a Pacemaker Cluster. Pacemaker is a high availability Cluster Resource Manager (CRM) that can be used to manage resources, and ensure that they remain available in the event of a node failure. First, we need to install the Pacemaker package and the pcs command line tool. On both nodes, run: sudo yum install -y pacemaker pcspacemaker pcs resources This write-up describes how to clear Failed Actions from the output of the pcs status command. 1 - The pcs status command displays failed starting of the server106-cpn_ilo4_fence_start_0 resource.
Jul 22, 2015 · Highly Available NFS Cluster: Setup Corosync & Pacemaker. ... services and are based on the OCF standard. The system already comes with some scripts, and most of the ...
PostgreSQL. Use PostgreSQL 9.1 or later. Parameters of pgsql RA. The following parameters are added for replication. rep_mode choice from async or sync to use replication."async" is used for async mode only, "sync" is used for switching between sync mode and async mode.The following parameter node_list master_ip, and restore_command is necessary at async or sync modes(*).
LSB Resource Agents are those found in /etc/init.d. Generally they are provided by the OS/distribution and in order to be used with Heartbeat or Pacemaker resource management, must conform to the LSB Spec.
The ClusterLabs stack ships with most modern enterprise distributions and has been deployed in many critical environments including Deutsche Flugsicherung GmbH which uses Pacemaker to ensure its air traffic control systems are always available.
The OCF resource agent clustering logic is based on a Pacemaker actions. These are monitor, start, stop, promote, demote and corresponding pre and post notifications being sent cluster-wide. The flow charts of events for the main actions are depicted below.