add support pgbackrest

add_pgnode.yml

@@ -11,8 +11,6 @@
     - vars/main.yml
     - vars/system.yml
     - "vars/{{ ansible_os_family }}.yml"
-  vars:
-    existing_pgcluster: true
 
   pre_tasks:
     - name: Checking Linux distribution
@@ -64,6 +62,7 @@
 
     - role: hostname
     - role: resolv_conf
+    - role: etc_hosts
     - role: add-repository
     - role: packages
     - role: sudo
@@ -76,6 +75,31 @@
     - role: ntp
     - role: ssh-keys
 
+- hosts: pgbackrest:postgres_cluster
+  become: true
+  become_method: sudo
+  gather_facts: true
+  any_errors_fatal: true
+  vars_files:
+    - vars/main.yml
+    - "vars/{{ ansible_os_family }}.yml"
+  roles:
+    - role: pgbackrest
+      when: pgbackrest_install|bool
+
+- hosts: replica
+  become: true
+  become_method: sudo
+  gather_facts: true
+  any_errors_fatal: true
+  vars_files:
+    - vars/main.yml
+    - vars/system.yml
+    - "vars/{{ ansible_os_family }}.yml"
+  vars:
+    existing_pgcluster: true
+
+  roles:
     - role: wal-g
       when: wal_g_install|bool
 

deploy_pgcluster.yml

@@ -77,6 +77,7 @@
 
     - role: hostname
     - role: resolv_conf
+    - role: etc_hosts
     - role: add-repository
     - role: packages
     - role: sudo
@@ -89,6 +90,29 @@
     - role: ntp
     - role: ssh-keys
 
+- hosts: pgbackrest:postgres_cluster
+  become: true
+  become_method: sudo
+  gather_facts: true
+  any_errors_fatal: true
+  vars_files:
+    - vars/main.yml
+    - "vars/{{ ansible_os_family }}.yml"
+  roles:
+    - role: pgbackrest
+      when: pgbackrest_install|bool
+
+- hosts: postgres_cluster
+  become: true
+  become_method: sudo
+  gather_facts: true
+  any_errors_fatal: true
+  vars_files:
+    - vars/main.yml
+    - vars/system.yml
+    - "vars/{{ ansible_os_family }}.yml"
+
+  roles:
     - role: wal-g
       when: wal_g_install|bool
 

files/requirements.txt

@@ -1,7 +1,6 @@
 urllib3>=1.24.2,<1.25
 boto
 PyYAML
-requests
 six >= 1.7
 kazoo>=1.3.1
 python-etcd>=0.4.3,<0.5
@@ -12,3 +11,5 @@ tzlocal
 python-dateutil
 psutil>=2.0.0
 cdiff
+pexpect>=4.8.0
+ruamel.yaml>=0.16.10

inventory

@@ -2,7 +2,7 @@
 # Please specify the ip addresses and connection settings for your environment
 # The specified ip addresses will be used to listen by the cluster components.
 
-# "postgresql_exists='true'" if PostgreSQL is already exists and runing
+# "postgresql_exists='true'" if PostgreSQL is already exists and running on master (for initial deployment only)
 # "hostname=" variable is optional (used to change the server name)
 
 # if dcs_exists: false and dcs_type: "etcd" (in vars/main.yml)
@@ -36,12 +36,20 @@ replica
 # You can deploy the etcd cluster and the haproxy balancers on other dedicated servers. 
 
 
+# if pgbackrest_install: true and "repo_host" is set (in vars/main.yml)
+[pgbackrest]  # optional (Dedicated Repository Host)
+
+
 # Connection settings
 [all:vars]
 ansible_connection='ssh'
 ansible_ssh_port='22'
 ansible_user='root'
-ansible_ssh_pass='testpas'  # "sshpass" package is required for use "ansible_ssh_pass"
-#ansible_ssh_private_key_file=
+ansible_ssh_pass='secretpassword'  # "sshpass" package is required for use "ansible_ssh_pass"
+# ansible_ssh_private_key_file=
 # ansible_python_interpreter='/usr/bin/python3'  # is required for use python3
 
+[pgbackrest:vars]
+ansible_user='postgres'
+ansible_ssh_pass='secretpassword'
+

molecule/default/converge.yml

@@ -10,13 +10,6 @@
         sysctl_set: false  # Added to prevent test failures in CI.
         cacheable: true
 
-    - name: Prepare | Remove epel-release package
-      package:
-        name: epel-release
-        state: absent
-      when:
-        - ansible_os_family == "RedHat"
-
     - name: Prepare | Clean yum cache
       command: yum clean all
       args:

molecule/postgrespro/converge.yml

@@ -10,13 +10,6 @@
         sysctl_set: false  # Added to prevent test failures in CI.
         cacheable: true
 
-    - name: Prepare | Remove epel-release package
-      package:
-        name: epel-release
-        state: absent
-      when:
-        - ansible_os_family == "RedHat"
-
     - name: Prepare | Clean yum cache
       command: yum clean all
       args:

roles/deploy-finish/tasks/main.yml

@@ -17,11 +17,13 @@
       debug:
         var: patronictl_result.stdout_lines
   ignore_errors: true
-  tags: patroni_status, cluster_info, cluster_status
+  tags: patroni_status, cluster_info, cluster_status, point_in_time_recovery
 
 - block:
     - name: Get postgresql database list
       run_once: true
+      become: true
+      become_user: postgres
       command:
         "{{ postgresql_bin_dir }}/psql -p {{ postgresql_port }} -U postgres -c
         \"
@@ -53,7 +55,7 @@
       debug:
         var: dbs_result.stdout_lines
   ignore_errors: true
-  tags: databases, db_list, cluster_info, cluster_status
+  tags: databases, db_list, cluster_info, cluster_status, point_in_time_recovery
 
 - block:
     - name: PostgreSQL Cluster connection info

roles/etc_hosts/tasks/main.yml

@@ -0,0 +1,15 @@
+---
+
+- name: Add entries into /etc/hosts file
+  lineinfile:
+    path: /etc/hosts
+    regexp: "^{{ item }}"
+    line: "{{ item }}"
+    unsafe_writes: true  # to prevent failures in CI
+  loop: "{{ etc_hosts }}"
+  when:
+    - etc_hosts is defined
+    - etc_hosts | length > 0
+  tags: etc_hosts
+
+...