Configuration Restrictions

The configuration restrictions in the subsections that follow apply only to Sun Cluster HA for PostgreSQL.

Your data service configuration might not be supported if you do not observe these restrictions.

Restriction for the Location of the Database Cluster

The PostgreSQL database cluster is where the database files and the configuration files are stored. The database cluster, represented by the configuration variable PGDATA, needs to be placed on the shared storage.

Restriction for the Listening Policy of the PostgreSQL Database Server

Sun Cluster HA for PostgreSQL requires that the PostgreSQL listens at the localhost. Otherwise the monitoring of your data service will not work. For more information, see Prepare Your PostgreSQL Installation for Cluster Control.

Restriction for the PostgreSQL postgresql.conf File

The postgresql.conf file is one of the central configuration files for a specific PostgreSQL database cluster.

The postgresql.conf file must be stored in the PGDATA path. You cannot register Sun Cluster HA for PostgreSQL if the file postgresql.conf is not in the directory referenced in the PGDATA variable. The other configuration files can be kept elsewhere. For more information about registration, see Registering and Configuring Sun Cluster HA for PostgreSQL.

Restriction for the Password Policy for the Sun Cluster HA for PostgreSQL Monitoring Database

Sun Cluster HA for PostgreSQL requires a database to which it can connect and where it can manipulate a table for monitoring purposes. The password policy of this database for access from the localhost must be either trust or password. All other password policies can be whatever is applicable. For more information about setting the password policy, see Registering and Configuring Sun Cluster HA for PostgreSQL. For more information about the password policy, go to http://www.postgresql.org.

Restriction for the PostgreSQL smf Service Name in a Failover Zone

The PostgreSQL configuration in a failover zone uses the smf component of Sun Cluster HA for Solaris Containers. The registration of the Sun Cluster HA for PostgreSQL data service in a failover zone defines an smf service to control the PostgreSQL database. The name of this smf service is generated in this naming scheme: svc:/application/sczone-agents:resource-name. No other smf service with exactly this name can exist.

The associated smf manifest is automatically created during the registration process in this location and naming scheme: /var/svc/manifest/application/sczone-agents/resource-name.xml. No other manifest can coexist with this name.