add enable/disable backup support

defaults/main.yaml

@@ -2,6 +2,9 @@ wal_g_version: "2.0.1"
 wal_g_install_repo: true
 
 wal_g_pg: false
+wal_g_pg_binary_name: "wal-g-pg"
+wal_g_pg_user: "postgres"
+wal_g_pg_database: "postgres"
 wal_g_restore: false
 wal_g_config_name: ".walg.json"
 wal_g_restore_config_name: ".walg-restore.json"
@@ -12,6 +15,7 @@ wal_g_pg_backup_owner: "postgres"
 wal_g_pg_backup_group: "postgres"
 wal_g_pg_major_version: "15"
 
+wal_g_backup_enable: false
 wal_g_backup_schedule: ""
 wal_g_backup_retention_schedule: ""
 wal_g_backup_retention_number: 7
@@ -35,6 +39,8 @@ wal_g_default_config:  # more options see https://github.com/wal-g/wal-g#configu
   WALG_COMPRESSION_METHOD: "brotli"
   PGDATA: "{{ wal_g_pg_data_dir }}"
   PGHOST: "/var/run/postgresql"
+  PGUSER: "{{ wal_g_pg_user }}"
+  PGDATABASE: "{{ wal_g_pg_database }}"
 #  WALG_LIBSODIUM_KEY: "d82560ddab2b096c56ea8c6573dfdf29de8cd6f2bb5e672d1d3b5a89749b8cbd"
   WALG_LIBSODIUM_KEY_TRANSFORM: "hex"
 
@@ -42,4 +48,6 @@ wal_g_default_restore_config:
   WALG_COMPRESSION_METHOD: "brotli"
   PGDATA: "{{ wal_g_pg_data_dir }}"
   PGHOST: "/var/run/postgresql"
+  PGUSER: "{{ wal_g_pg_user }}"
+  PGDATABASE: "{{ wal_g_pg_database }}"
   WALG_LIBSODIUM_KEY_TRANSFORM: "hex"

tasks/backup_job_timer.yaml

@@ -8,7 +8,7 @@
 - name: Enable and start systemd backup timer
   systemd:
     name: backup.timer
-    enabled: yes
+    enabled: "{{ 'yes' if wal_g_backup_enable else 'no' }}"
     masked: no
     state: started
     daemon_reload: yes

tasks/backup_permanent_job_timer.yaml

@@ -8,7 +8,7 @@
 - name: Enable and start systemd backup permanent timer
   systemd:
     name: backup-permanent.timer
-    enabled: yes
+    enabled: "{{ 'yes' if wal_g_backup_enable else 'no' }}"
     masked: no
     state: started
     daemon_reload: yes

tasks/backup_retention_job_timer.yaml

@@ -8,7 +8,7 @@
 - name: Enable and start systemd backup retention timer
   systemd:
     name: backup-retention.timer
-    enabled: yes
+    enabled: "{{ 'yes' if wal_g_backup_enable else 'no' }}"
     masked: no
     state: started
     daemon_reload: yes

templates/backup-permanent.sh.j2

@@ -4,7 +4,7 @@ flock -x 200
 role=$(curl -k -s http://127.0.0.1:8008 || curl -k -s https://127.0.0.1:8008 | jq '.role')
 
 
-if [ "${role}" == "\"master\"" ] ; then
+if [ "${role}" == "\"master\"" ] || [ "${role}" == "" ]; then
   {% if wal_g_http_proxy is defined %}http_proxy={{ wal_g_http_proxy }} {% else %}{% endif %}{% if wal_g_https_proxy is defined %}https_proxy={{ wal_g_https_proxy }} {% elif wal_g_http_proxy is defined %}https_proxy={{ wal_g_http_proxy }}{% else %}{% endif %} {{ wal_g_pg_binary_name }} --config {{ wal_g_pg_home_dir }}/{{ wal_g_config_name }} backup-push {{ wal_g_pg_data_dir }} --full --permanent 2>&1 | tee -a /var/log/postgresql/backup-permanent.log
 else
   echo ""

templates/backup-retention.sh.j2

@@ -3,7 +3,7 @@ flock -x 200
 
 role=$(curl -k -s http://127.0.0.1:8008 || curl -k -s https://127.0.0.1:8008 | jq '.role')
 
-if [ "${role}" == "\"master\"" ] ; then
+if [ "${role}" == "\"master\"" ] || [ "${role}" == "" ]; then
   {% if wal_g_http_proxy is defined %}http_proxy={{ wal_g_http_proxy }} {% else %}{% endif %}{% if wal_g_https_proxy is defined %}https_proxy={{ wal_g_https_proxy }} {% elif wal_g_http_proxy is defined %}https_proxy={{ wal_g_http_proxy }}{% else %}{% endif %} {{ wal_g_pg_binary_name }} --config {{ wal_g_pg_home_dir }}/{{ wal_g_config_name }} retain {{ wal_g_backup_retention_number }} --confirm --use-sentinel-time 2>&1 | tee -a /var/log/postgresql/backup-retention.log
 else
   echo ""

templates/backup.sh.j2

@@ -3,7 +3,7 @@ flock -x 200
 
 role=$(curl -k -s http://127.0.0.1:8008 || curl -k -s https://127.0.0.1:8008 | jq '.role')
 
-if [ "${role}" == "\"master\"" ] ; then
+if [ "${role}" == "\"master\"" ] || [ "${role}" == "" ]; then
   {% if wal_g_http_proxy is defined %}http_proxy={{ wal_g_http_proxy }} {% else %}{% endif %}{% if wal_g_https_proxy is defined %}https_proxy={{ wal_g_https_proxy }} {% elif wal_g_http_proxy is defined %}https_proxy={{ wal_g_http_proxy }}{% else %}{% endif %} {{ wal_g_pg_binary_name }} --config {{ wal_g_pg_home_dir }}/{{ wal_g_config_name }} backup-push {{ wal_g_pg_data_dir }} --full 2>&1 | tee -a /var/log/postgresql/backup.log
 else
   echo ""