patroni: disable full configuration

etcd/tasks/packages.yml

@@ -5,4 +5,11 @@
     name:
       - etcd-client
       - etcd-server
-    update_cache: yes
+    update_cache: yes
+
+- name: Install python dependencies for Patroni
+  ansible.builtin.apt:
+    name:
+      - python3-etcd
+      - python3-psycopg2
+  when: etcd_install_dependencies_for_patroni | bool

patroni/defaults/main.yml

@@ -3,39 +3,49 @@
 # Install Patroni from backport Evolix
 patroni_backport: false
 
-# Define variable for Patroni
+etcd_install_dependencies_for_patroni: True
 
-patroni_scope: "mycluster"
-patroni_name: "{{ patroni_scope }}-{{ ansible_hostname }}"
+#########################################################################
+# Disabled for now
+# It's too much work to completely manage a Patroni cluster from Ansible
+##########
+# # Define variable for Patroni
 
-# Binding host:port for the cluster (must not be localhost)
-patroni_restapi_connect_address_host: "0.0.0.0"
-patroni_restapi_connect_address_port: "8008"
-patroni_restapi_connect_address: "{{ patroni_restapi_connect_address_host }}:{{ patroni_restapi_connect_address_port }}"
-# Additional binding for health-checks…
-patroni_restapi_listen_host: "127.0.0.1"
-patroni_restapi_listen_port: "8008"
-patroni_restapi_listen: "{{ patroni_restapi_listen_host }}:{{ patroni_restapi_listen_port }}"
+# patroni_scope: "13-main"
+# patroni_name: "{{ ansible_hostname }}"
 
-patroni_postgresql_connect_address_host: "0.0.0.0"
-patroni_postgresql_connect_address_port: "5432"
-patroni_postgresql_connect_address: "{{ patroni_postgresql_connect_address_host }}:{{ patroni_postgresql_connect_address_port }}"
+# # Binding host:port for the cluster (must not be localhost)
+# patroni_restapi_connect_address_host: "0.0.0.0"
+# patroni_restapi_connect_address_port: "8008"
+# patroni_restapi_connect_address: "{{ patroni_restapi_connect_address_host }}:{{ patroni_restapi_connect_address_port }}"
+# # Additional binding for health-checks…
+# patroni_restapi_listen_host: "127.0.0.1"
+# patroni_restapi_listen_port: "8008"
+# patroni_restapi_listen: "{{ patroni_restapi_listen_host }}:{{ patroni_restapi_listen_port }}"
 
-patroni_postgresql_listen_hosts:
-  - "127.0.0.1"
-patroni_postgresql_listen_port: "5432"
-patroni_postgresql_listen: "{{ patroni_postgresql_listen_hosts | join(',') }}:{{ patroni_postgresql_listen_port }}"
+# patroni_postgresql_connect_address_host: "0.0.0.0"
+# patroni_postgresql_connect_address_port: "5432"
+# patroni_postgresql_connect_address: "{{ patroni_postgresql_connect_address_host }}:{{ patroni_postgresql_connect_address_port }}"
 
-patroni_postgresql_datadir: "/home/{{ patroni_name }}"
-patroni_postgresql_pgpass: "/tmp/{{ patroni_name }}-pgpass"
-patroni_postgresql_hosts_cluster: []
-patroni_postgresql_listen_ips: 127.0.0.1
-patroni_postgresql_connect_ip: 127.0.0.1
-patroni_postgresql_version: ''
-patroni_postgresql_replication_user: 'repl'
-patroni_postgresql_superuser: 'admin'
+# patroni_postgresql_listen_hosts:
+#   - "127.0.0.1"
+# patroni_postgresql_listen_port: "5432"
+# patroni_postgresql_listen: "{{ patroni_postgresql_listen_hosts | join(',') }}:{{ patroni_postgresql_listen_port }}"
 
-# Define variable for etcd
-etcd_hosts: []
-etcd_port: "2379"
+# patroni_postgresql_datadir: "/home/{{ patroni_scope }}"
+# patroni_postgresql_pgpass: "/tmp/{{ patroni_scope }}-pgpass"
+# patroni_postgresql_listen_ips: 127.0.0.1
+# patroni_postgresql_connect_ip: 127.0.0.1
+# patroni_postgresql_version: ''
+# patroni_postgresql_replication_user: 'repl'
+# patroni_postgresql_superuser: 'admin'
+
+# # Each entry must look like this :
+# # { name: replication, user: foo, host: "1.2.3.4/32", hash_type: md5/scram-sha-256 }
+# patroni_postgresql_hba_roles: []
+
+# # Define variable for etcd
+# etcd_hosts: []
+# etcd_port: "2379"
+#########################################################################
 

patroni/tasks/config.yml

@@ -1,19 +1,38 @@
 ---
+#########################################################################
+# Disabled for now
+# It's too much work to completely manage a Patroni cluster from Ansible
+#########################################################################
+
+
+# - name: Create a password for PostgreSQL repl user
+#   command: "apg -M LCN -n1 -m 16"
+#   register: patroni_postgresql_replication_password
+#   check_mode: no
+
+# - name: Create a password for PostgreSQL superuser user
+#   command: "apg -M LCN -n1 -m 16"
+#   register: patroni_postgresql_superuser_password
+#   check_mode: no
 
 - name: Create a password for PostgreSQL repl user
-  command: "apg -M LCN -n1 -m 16"
+  local_action:
+    module: ansible.builtin.command
+    cmd: "apg -M LCN -n1 -m 16"
   register: patroni_postgresql_replication_password
-  check_mode: no
+  run_once: True
 
 - name: Create a password for PostgreSQL superuser user
-  command: "apg -M LCN -n1 -m 16"
+  local_action:
+    module: ansible.builtin.command
+    cmd: "apg -M LCN -n1 -m 16"
   register: patroni_postgresql_superuser_password
-  check_mode: no
+  run_once: True
 
 - name: Create Patroni config file
   ansible.builtin.template:
-    src: config.j2
-    dest: /etc/patroni/config.yml
+    src: config.yml.j2
+    dest: /etc/patroni/{{ patroni_scope }}.yml
     owner: root
     group: root
     mode: "0644"

patroni/tasks/main.yml

@@ -1,7 +1,14 @@
 ---
 
 - ansible.builtin.import_tasks: backports.yml
-  when: patroni_backport | bool
+  when: patroni_backport | bool | default(False)
 
 - ansible.builtin.import_tasks: packages.yml
-- ansible.builtin.import_tasks: config.yml
+
+
+#########################################################################
+# Disabled for now
+# It's too much work to completely manage a Patroni cluster from Ansible
+##########
+# - ansible.builtin.import_tasks: config.yml
+#########################################################################

patroni/templates/config.yml.j2

@@ -29,26 +29,26 @@ bootstrap:
               checkpoint_timeout: 30
 
     initdb:
-    - encoding: UTF8
-    - data-checksums
+      - encoding: UTF8
+      - data-checksums
 
     pg_hba:
-    - host replication repl 127.0.0.1/32 md5
-{% for server in groups['patroni'] %}
-    - host replication repl {{ hostvars[server]['postgresql_hosts_cluster'] }}/0 md5
+      - host replication repl 127.0.0.1/32 md5
+{% for host in patroni_postgresql_replication_hosts %}
+      - host {{ patroni_postgresql_replication_role }} {{ patroni_postgresql_replication_user }} {{ host }} {{ patroni_postgresql_replication_hash_type }}
 {% endfor %}
-    - host all all 0.0.0.0/0 md5
+      - host all all 0.0.0.0/0 md5
 
    users:
         {{ patroni_postgresql_superuser }}:
             password: {{ patroni_postgresql_superuser_password.stdout }}
             options:
-             - createrole
-             - createdb
+              - createrole
+              - createdb
         {{ patroni_postgresql_replication_user }}:
            password: {{ patroni_postgresql_replication_password.stdout }}
            options:
-            - replication
+             - replication
 
 postgresql:
     listen: {{ patroni_postgresql_listen }}

pgbouncer/handlers/main.yml

@@ -1,5 +1,5 @@
 ---
-- name: Restart PgBouncer
+- name: restart pgbouncer
   ansible.builtin.systemd:
     name: pgbouncer.service
     state: restarted