PITR: don't try to stop postgres if "pg_ctl status" returned 4 ( dire…

…ctory "/path/to/data" is not a database cluster directory)

Fixed:

TASK [patroni : Stop PostgreSQL] ***********************************************
fatal: [10.129.8.81]: FAILED! => {"changed": true, "cmd": ["/usr/bin/pg_ctlcluster", "14", "mds", "stop", "-m", "fast", "--", "-w", "-t", "600"], "delta": "0:00:00.075440", "end": "2023-02-20 13:02:21.789506", "msg": "non-zero return code", "rc": 2, "start": "2023-02-20 13:02:21.714066", "stderr": "", "stderr_lines": [], "stdout": "Cluster is not running.", "stdout_lines": ["Cluster is not running."]}
changed: [10.129.8.80]
fatal: [10.129.8.77]: FAILED! => {"changed": true, "cmd": ["/usr/bin/pg_ctlcluster", "14", "mds", "stop", "-m", "fast", "--", "-w", "-t", "600"], "delta": "0:00:00.095513", "end": "2023-02-20 13:02:21.830583", "msg": "non-zero return code", "rc": 2, "start": "2023-02-20 13:02:21.735070", "stderr": "", "stderr_lines": [], "stdout": "Cluster is not running.", "stdout_lines": ["Cluster is not running."]}

roles/patroni/tasks/main.yml

@@ -699,12 +699,12 @@
         - name: Stop PostgreSQL  # "Debian"
           command: "/usr/bin/pg_ctlcluster {{ postgresql_version }} {{ postgresql_cluster_name }} stop -m fast -- -w -t 600"
           when: ansible_os_family == "Debian" and
-                (pg_ctl_status_result.rc is defined and pg_ctl_status_result.rc != 3)
+                (pg_ctl_status_result.rc is defined and (pg_ctl_status_result.rc != 3 and pg_ctl_status_result.rc != 4))
 
         - name: Stop PostgreSQL  # "RedHat" or PostgresPro
           command: "{{ postgresql_bin_dir }}/pg_ctl stop -D {{ postgresql_data_dir }} -m fast -w -t 600"
           when: (ansible_os_family == "RedHat" or postgresql_packages|join(" ") is search("postgrespro")) and
-                (pg_ctl_status_result.rc is defined and pg_ctl_status_result.rc != 3)
+                (pg_ctl_status_result.rc is defined and (pg_ctl_status_result.rc != 3 and pg_ctl_status_result.rc != 4))
       when: patroni_cluster_bootstrap_method == "pgbackrest"
       become: true
       become_user: postgres