ocf_heartbeat_pgsqlms - A PostgreSQL multi-state resource agent for Pacemaker

Author

Jehan-Guillaume de Rorthais and Mael Rimbault. 2.3.0 2024-03-18 OCF_HEARTBEAT_PGSQLMS(7)

Description

Resource script for PostgreSQL in replication. It manages PostgreSQL servers using streaming replication as an HA resource.

Example Crm Shell

The following is an example configuration for a pgsqlms resource using the crm(8) shell: primitive pgsqld pgsqlms \ params pgdata="/var/lib/postgresql/9.6/main" \ bindir="/usr/lib/postgresql/9.6/bin" \ pghost="/var/run/postgresql" \ recovery_template="/etc/postgresql/9.6/main/recovery.conf.pcmk" \ start_opts="-c config_file=/etc/postgresql/9.6/main/postgresql.conf" \ op start timeout=60s \ op stop timeout=60s \ op promote timeout=30s \ op demote timeout=120s \ op monitor interval=15s timeout=10s role="Master" \ op monitor interval=16s timeout=10s role="Slave" \ op notify timeout=60s ms pgsql-ha pgsqld meta notify=true

Example Pcs

The following is an example configuration for a pgsqlms resource using pcs(8): pcs resource create pgsqld ocf:heartbeat:pgsqlms \ bindir=/usr/pgsql-9.6/bin pgdata=/var/lib/pgsql/9.6/data \ op start timeout=60s \ op stop timeout=60s \ op promote timeout=30s \ op demote timeout=120s \ op monitor interval=15s timeout=10s role="Master" \ op monitor interval=16s timeout=10s role="Slave" \ op notify timeout=60s --master notify=true

Name

ocf_heartbeat_pgsqlms - A PostgreSQL multi-state resource agent for Pacemaker

Supported Actions

This resource agent supports the following actions (operations): start Starts the resource. Suggested minimum timeout: 60. stop Stops the resource. Suggested minimum timeout: 60. reload Suggested minimum timeout: 20. promote Promotes the resource to the Master role. Suggested minimum timeout: 30. demote Demotes the resource to the Slave role. Suggested minimum timeout: 120. monitor(Masterrole) Performs a detailed status check. Suggested minimum timeout: 10. Suggested interval: 15. monitor(Slaverole) Performs a detailed status check. Suggested minimum timeout: 10. Suggested interval: 16. notify Suggested minimum timeout: 60 meta-data Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5. methods Suggested minimum timeout: 5. validate-all Performs a validation of the resource configuration. Suggested minimum timeout: 5.

Supported Parameters

pgdata Location of the PGDATA of your instance (optional, string, default "/var/lib/pgsql/data") pghost The socket directory or IP address to use to connect to the local instance (optional, string, default "/var/run/postgresql") pgport The port to connect to the local instance (optional, integer, default "5432") bindir Location of the PostgreSQL binaries. (optional, string, default "/usr/bin") system_user The system owner of your instance's process (optional, string, default "postgres") recovery_templateONLY for PostgreSQL 11 and bellow. The local template that will be copied as the "PGDATA/recovery.conf" file. This template file must exists on all node. With PostgreSQL 12 and higher, the cluster will refuse to start if this parameter is set or a template file is found. (optional, string, default "$PGDATA/recovery.conf.pcmk") maxlag Maximum lag allowed on a standby before we set a negative master score on it. The calculation is based on the difference between the current xlog location on the master and the write location on the standby. (optional, integer, default "0" disables this feature) datadir Path to the directory set in "data_directory" from your postgresql.conf file. This parameter has same default than PostgreSQL itself: the "pgdata" parameter value. Unless you have a special PostgreSQL setup and you understand this parameter, ignoreit (optional, string, default to the value of "pgdata") start_opts Additional arguments given to the postgres process on startup. See "postgres --help" for available options. Useful when the postgresql.conf file is not in the data directory (PGDATA), eg.: -c config_file=/etc/postgresql/9.3/main/postgresql.conf (optinal, string, default "")