Run PG upgrade tasks in container because of permissions

* update pg references

installer/roles/image_build/templates/Dockerfile.j2

@@ -214,6 +214,7 @@ RUN for dir in \
       /var/run/awx-rsyslog \
       /var/log/tower \
       /var/log/nginx \
+      /var/lib/postgresql \
       /var/run/supervisor \
       /var/lib/nginx ; \
     do mkdir -m 0775 -p $dir ; chmod g+rw $dir ; chgrp root $dir ; done && \

installer/roles/local_docker/defaults/main.yml

@@ -8,3 +8,4 @@ postgresql_version: "12"
 postgresql_image: "postgres:{{postgresql_version}}"
 
 compose_start_containers: true
+upgrade_postgres: false

installer/roles/local_docker/tasks/upgrade_postgres.yml

@@ -1,26 +1,24 @@
 ---
-- name: Check for existing Postgres data
+
-  stat:
+- name: Register temporary docker container
-    path: "{{ postgres_data_dir }}/pgdata/PG_VERSION"
+  set_fact:
+    container_command: "docker run -v '{{ postgres_data_dir | realpath }}:/var/lib/postgresql' centos:8 bash "
+
+- name: Check for existing Postgres data (run from inside the container for access to file)
+  shell:
+    cmd: "{{ container_command }} [[ -f /var/lib/postgresql/10/data/PG_VERSION ]] && echo 'exists'"
   register: pg_version_file
+  ignore_errors: true
 
 - name: Record Postgres version
-  set_fact:
+  shell: "{{ container_command }} cat var/lib/postgresql/10/data/PG_VERSION"
-    old_pg_version: "{{ lookup('file', postgres_data_dir + '/pgdata/PG_VERSION') }}"
+  register: old_pg_version
-  when: pg_version_file.stat.exists
+  when: pg_version_file.stdout == 'exists'
 
 - name: Determine whether to upgrade postgres
   set_fact:
-    upgrade_postgres: "{{ old_pg_version is defined and old_pg_version == '9.6' }}"
+    upgrade_postgres: "{{ old_pg_version is defined and old_pg_version.stdout == '10' | bool }}"
-
+  when: not old_pg_version.skipped | bool
-- name: Set up new postgres paths pre-upgrade
-  file:
-    state: directory
-    path: "{{ item }}"
-    recurse: true
-  when: upgrade_postgres | bool
-  with_items:
-    - "{{ postgres_data_dir }}/10/data"
 
 - name: Stop AWX before upgrading postgres
   docker_service:
@@ -31,20 +29,15 @@
 - name: Upgrade Postgres
   shell: |
     docker run --rm \
-      -v {{ postgres_data_dir }}/10/data:/var/lib/postgresql/10/data \
+      -v {{ postgres_data_dir | realpath }}:/var/lib/postgresql \
-      -v {{ postgres_data_dir }}/12/data:/var/lib/postgresql/12/data \
       -e PGUSER={{ pg_username }} -e POSTGRES_INITDB_ARGS="-U {{ pg_username }}" \
       tianon/postgres-upgrade:10-to-12 --username={{ pg_username }}
   when: upgrade_postgres | bool
 
 - name: Copy old pg_hba.conf
-  copy:
+  shell: "{{ container_command }} cp /var/lib/postgresql/10/data/pg_hba.conf /var/lib/postgresql/12/data/pg_hba.conf"
-    src: "{{ postgres_data_dir + '/pgdata/pg_hba.conf' }}"
-    dest: "{{ postgres_data_dir + '/12/data/' }}"
   when: upgrade_postgres | bool
 
 - name: Remove old data directory
-  file:
+  shell: "{{ container_command }} rm -rf /var/lib/postgresql/10/data"
-    path: "{{ postgres_data_dir + '/10/data' }}"
-    state: absent
   when: compose_start_containers|bool

installer/roles/local_docker/templates/docker-compose.yml.j2

@@ -177,7 +177,7 @@ services:
     container_name: awx_postgres
     restart: unless-stopped
     volumes:
-      - "{{ postgres_data_dir }}/10/data/:/var/lib/postgresql/data:Z"
+      - "{{ postgres_data_dir }}:/var/lib/postgresql:Z"
     environment:
       POSTGRES_USER: {{ pg_username }}
       POSTGRES_PASSWORD: {{ pg_password }}