add pending restart feature and bump postgresql default version to 15.4

defaults/main.yaml

@@ -1,13 +1,14 @@
 # Patroni common options
 patroni_version: "3.0.4"
 patroni_install_official_repo: true
+patroni_play_group: "patroni"
 
 # Patroni cluster options
 patroni_cluster_name: "patroni-cluster"
 patroni_namespace: "/service/"
 
 # Patroni PostgreSQL common options
-patroni_postgresql_version: "15.3"
+patroni_postgresql_version: "15.4"
 patroni_postgresql_install_repo: true
 patroni_postgresql_system_locale: "en_US.UTF-8"
 patroni_postgresql_system_language: "{{ patroni_postgresql_system_locale }}"
@@ -31,7 +32,6 @@ patroni_ssl: false
 patroni_ssl_path: "/etc/patroni/ssl"
 patroni_self_signed_cert: false
 patroni_self_signed_cert_name: "cert"
-patroni_play_group: "patroni"
 
 ## DCS options. Consul or Etcd
 patroni_dcs_exists: false
@@ -113,7 +113,6 @@ patroni_postgresql_default_parameters:
   superuser_reserved_connections: "5"
   password_encryption: "{{ patroni_postgresql_password_encryption_algorithm }}"
   max_locks_per_transaction: "64"
-  max_prepared_transactions: "0"
   huge_pages: "try"
   shared_buffers: "{{ (ansible_memory_mb.real.total * 0.25) | round | int }}MB"
   max_worker_processes: "{{ ansible_processor_vcpus }}"

tasks/main.yaml

@@ -77,3 +77,7 @@
 - name: Dynamic Patroni configuration
   include_tasks: dynamic_config.yaml
   tags: patroni_dynamic_configure
+
+- name: Patroni restart if pending restart
+  include_tasks: restart_pending.yaml
+  tags: patroni_restart_pending

tasks/restart_pending.yaml

@@ -0,0 +1,46 @@
+---
+- name: Pending restart for Patroni
+  block:
+    - name: Wait for Patroni leader
+      vars:
+        _query: 'json.members[].role'
+      ansible.builtin.uri:
+        url: "{{ 'https://' if patroni_ssl else 'http://' }}{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}:{{ patroni_restapi_listen_port }}/cluster"
+        method: GET
+        body_format: json
+        status_code:
+          - 200
+          - 503
+      register: patroni_role
+      until: patroni_role | json_query(_query) | regex_findall('leader') | count > 0
+      retries: 100
+      delay: 10
+
+    - name: Get Patroni nodes roles
+      ansible.builtin.uri:
+        url: "{{ 'https://' if patroni_ssl else 'http://' }}{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}:{{ patroni_restapi_listen_port }}"
+        method: GET
+        body_format: json
+        status_code:
+          - 200
+          - 503
+      register: patroni_role
+
+    - name: Set fact about roles
+      set_fact:
+        role: "{{ patroni_role.json.role }}"
+
+    - name: Restart if pending restart
+      throttle: 1
+      ansible.builtin.uri:
+        url: "{{ 'https://' if patroni_ssl else 'http://' }}{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}:{{ patroni_restapi_listen_port }}/restart"
+        user: "{{ patroni_restapi_username }}"
+        password: "{{ patroni_restapi_password }}"
+        method: POST
+        body: '{ "restart_pending": true }'
+        force_basic_auth: yes
+        status_code:
+          - 200
+          - 503
+      #when:
+      #  - "hostvars[inventory_hostname]['role'] == 'master'"

templates/patroni.yaml.j2

@@ -104,15 +104,15 @@ bootstrap:
 
   pg_hba:  # Add following lines to pg_hba.conf after running 'initdb'
 {% if patroni_ssl|bool %}
-{% for host in groups.patroni %}
+{% for host in groups[patroni_play_group] %}
     - hostssl all all {{ hostvars[host]['ansible_host'] }}/32 {{ patroni_postgresql_password_encryption_algorithm }}
 {% endfor %}
 {% else %}
-{% for host in groups.patroni %}
+{% for host in groups[patroni_play_group] %}
     - host all all {{ hostvars[host]['ansible_host'] }}/32 {{ patroni_postgresql_password_encryption_algorithm }}
 {% endfor %}
 {% endif %}
-{% for host in groups.patroni %}
+{% for host in groups[patroni_play_group] %}
     - host replication {{ patroni_replication_username }} {{ hostvars[host]['ansible_host'] }}/32 {{ patroni_postgresql_password_encryption_algorithm }}
 {% endfor %}
     - host all all 127.0.0.1/32 {{ patroni_postgresql_password_encryption_algorithm }}
@@ -150,9 +150,9 @@ postgresql:
 #      password: rewind_password
   parameters:
     unix_socket_directories: {{ patroni_postgresql_unix_socket_dir }}
-{% if patroni_postgresql_stats_temp_directory_path is defined and patroni_postgresql_stats_temp_directory_path != 'none' %}
+#{% if patroni_postgresql_stats_temp_directory_path is defined and patroni_postgresql_stats_temp_directory_path != 'none' %}
-    stats_temp_directory: {{ patroni_postgresql_stats_temp_directory_path }}
+#    stats_temp_directory: {{ patroni_postgresql_stats_temp_directory_path }}
-{% endif %}
+#{% endif %}
 {% if patroni_ssl|bool %}
     ssl: on
     ssl_cert_file: {{ patroni_ssl_path }}/{{ patroni_self_signed_cert_name }}.crt