PostgreSQL 'promote' not working

[Peter Stachowski]

Due to a missing file in the PostgreSQL install, promoting a slave to master doesn't work properly in the current implementation. Here's a sample of the error message that will appear in the guest log:

    2016-06-13 19:12:15.481 TRACE oslo_messaging.rpc.server Stdout: u'The servers diverged at WAL position 0/5012B30 on timeline 1.\nRewinding from Last common checkpoint at 0/4000060 on timeline 1\ncreating backup label and updating control file\n'
    2016-06-13 19:12:15.481 TRACE oslo_messaging.rpc.server Stderr: u'The program "initdb" is needed by pg_rewind but was \nnot found in the same directory as "/usr/local/pgsql/bin/pg_rewind".\nCheck your installation.\n'

This needs to be fixed in the PostgreSQL elements before the feature will work as it should.