I get the following when discovering postgres:

2008-04-25 16:24:52,428 INFO [InventoryManager.discovery-1] (org.rhq.plugins.postgres.PostgresDiscoveryComponent)- Exception detecting postgres instance
org.postgresql.util.PSQLException: FATAL: password authentication failed for user "postgres"
        at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:276)
        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:95)
        at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66)
        at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:124)
        at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30)
        at org.postgresql.jdbc3.Jdbc3Connection.<init>(Jdbc3Connection.java:24)
        at org.postgresql.Driver.makeConnection(Driver.java:386)
        at org.postgresql.Driver.connect(Driver.java:260)
        at java.sql.DriverManager.getConnection(DriverManager.java:525)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at org.rhq.plugins.postgres.PostgresDiscoveryComponent.buildConnection(PostgresDiscoveryComponent.java:186)
        at org.rhq.plugins.postgres.PostgresDiscoveryComponent.getVersion(PostgresDiscoveryComponent.java:162)
        at org.rhq.plugins.postgres.PostgresDiscoveryComponent.createResourceDetails(PostgresDiscoveryComponent.java:146)
        at org.rhq.plugins.postgres.PostgresDiscoveryComponent.discoverResources(PostgresDiscoveryComponent.java:118)
        at org.rhq.core.pc.inventory.AutoDiscoveryExecutor.pluginDiscovery(AutoDiscoveryExecutor.java:192)
        at org.rhq.core.pc.inventory.AutoDiscoveryExecutor.call(AutoDiscoveryExecutor.java:99)
        at org.rhq.core.pc.inventory.AutoDiscoveryExecutor.run(AutoDiscoveryExecutor.java:88)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:280)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:135)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:65)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:142)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:166)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)


That makes sense, I don't have the postgres user. So I configured the discovered postgres with a valid user and was able to inventory and what not. However, this still appears in my agent logs on each subsequent postgres discovery. It's reasonably minor, just irritating.