gistfile1.txt

 postgresql-9.1:
   service:
     - enabled
     - require:
       - pkg: postgresql91-server
     - watch: 
       - cmd: pgsql_initdb
       
 pgsql_initdb:
   cmd.run:
     name: "/sbin/service postgresql-9.1 initdb"
     onlyif: "/usr/bin/test ! -e /var/lib/pgsql/9.1/data/PG_VERSION"
     require:
       - pkg: postgresql91-server


Errors:

[root@archon ~]# salt 'centos6-tester' state.sls postgres
centos6-tester:
    Data failed to compile:
----------
    The state "pgsql_initdb" in sls postgres is not formed as a list