all demo

ansible/playbook/pg_dump/README.md

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+# Ansible Database Backup
+
+[![Use community.postgresql.postgresql_db](https://docs.ansible.com/ansible/latest/collections/community/postgresql/postgresql_db_module.html#ansible-collections-community-postgresql-postgresql-db-module)](https://docs.ansible.com/ansible/latest/collections/community/postgresql/postgresql_db_module.html#ansible-collections-community-postgresql-postgresql-db-module)
+
+Backup database from remote postgresql for {{store}} days.
+
+## Install
+
+```
+ansible-galaxy collection install community.postgresql
+```
+## How to dump 
+```
+ansible-playbook sd_pro_dump.yml -l sd-pgsql9 --extra-vars "dbname=sd4_itsmcorp_devel store=7 arg=--format=custom"
+```
+```
+Avalable env:
+store: default('1') - how long do you need to store current backup
+target: default('/opt/back/internal/postgres/') - where place put the archive
+arg: default('--exclude-table=tbl_event --format=custom') - pg_dump argument
+```
+
+#### PostgreSQL
+
+[Official documentaiton.](https://www.postgresql.org/docs/current/static/app-pgdump.html)
+
+Example:
+
+```
+pg_dump --format "custom" --file "/opt/back/internal/postgres/{{ dbname }}.bak" {{ dbname }}
+```
+
+## Supported Databases
+
+For now supports:
+* PostgreSQL
+
+## Supported OS
+Linux

ansible/playbook/pg_dump/pg_dump.yml

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+- hosts: all
+  remote_user: ansible
+  vars:
+    store_env: "{{ store|default('1') }}"
+    target_env: "{{ target|default('/opt/back/internal/postgres/') }}"
+    extra_args: "{{ arg|default('--exclude-table=tbl_event --format=custom') }}"
+
+  tasks:
+  - debug:
+      var: store_env
+  - debug:
+      var: target_env
+
+  - name: Add num_of_days days to start_date
+    command: date +'%Y-%m-%d' -d "+{{store_env}} days"
+    register: end_date
+  - debug:
+      var: end_date.stdout
+
+  - name: Dump the "{{ dbname }}" database to a file
+    become: yes
+    become_method: sudo
+    become_user: postgres
+    community.postgresql.postgresql_db:
+      name: "{{ dbname }}"
+      state: dump
+      target: "{{ target_env }}{{ dbname }}_{{ ansible_date_time.date }}_{{ end_date.stdout }}.bak"
+      dump_extra_args: "{{ extra_args }}"