Add cephadm_hostname to enter/exit maintenance roles

Some systems do not use ansible_facts.nodename.

Author: markgoddard

roles/enter_maintenance/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+cephadm_hostname: "{{ ansible_facts.nodename }}"

roles/enter_maintenance/tasks/enter.yml

@@ -4,7 +4,7 @@
     name: stackhpc.cephadm.commands
   vars:
     cephadm_commands:
-      - "orch host ok-to-stop {{ ansible_facts.nodename }}"
+      - "orch host ok-to-stop {{ cephadm_hostname }}"
 
 # Annoyingly, 'ceph orch host ok-to-stop' does not exit non-zero when
 # it is not OK to stop, so we need to check for specific messages.
@@ -30,4 +30,4 @@
     name: stackhpc.cephadm.commands
   vars:
     cephadm_commands:
-      - "orch host maintenance enter {{ ansible_facts.nodename }}"
+      - "orch host maintenance enter {{ cephadm_hostname }}"

roles/enter_maintenance/tasks/main.yml

@@ -17,7 +17,7 @@
 # Entering maintenance fails if the host is already in maintenance.
 - name: Enter maintenance
   ansible.builtin.include_tasks: enter.yml
-  when: ansible_facts.nodename not in cephadm_hosts_in_maintenance
+  when: cephadm_hostname not in cephadm_hosts_in_maintenance
   vars:
     cephadm_hosts_in_maintenance: >-
       {{ cephadm_commands_result.results[0].stdout |

roles/exit_maintenance/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+cephadm_hostname: "{{ ansible_facts.nodename }}"

roles/exit_maintenance/tasks/exit.yml

@@ -4,4 +4,4 @@
     name: stackhpc.cephadm.commands
   vars:
     cephadm_commands:
-      - "orch host maintenance exit {{ ansible_facts.nodename }}"
+      - "orch host maintenance exit {{ cephadm_hostname }}"

roles/exit_maintenance/tasks/main.yml

@@ -21,5 +21,5 @@
     cephadm_host_status: >-
       {{ cephadm_commands_result.results[0].stdout |
          from_json |
-         selectattr('hostname', 'equalto', ansible_facts.nodename) |
+         selectattr('hostname', 'equalto', cephadm_hostname) |
          first }}