Where can I specify environment variables for a db2 resource in a Pacemaker cluster?

Issue

• The DB2 instance user's environment variables are loaded when I start the database manually, but they're not set when Pacemaker starts the database via an ocf:heartbeat:db2 resource.
• The environment variables are configured in .profile in the DB2 user's home directory, but they are not taking effect when Pacemaker starts the resource.