tasks/postgres-data-directory.yml

   1 - name: Create dedicated data directory
   2   file: path={{ postgres_data_dir }} state=directory owner=postgres group=postgres
   3
   4 - name: Check /var/lib/postgresql directory
   5   stat: path=/var/lib/postgresql/
   6   register: var_lib_postgresql
   7
   8 - name: Create a symlink between regular data directory and dedicated one
   9   file: src={{ postgres_data_dir }} dest=/var/lib/postgresql state=link
  10   when: not var_lib_postgresql.stat.exists