Python script backup or restore postgress database

config.json - configuration file pg_maintance.py - main file utility

Configuration file 'config.json'

format: json

fields:

"host_name"      - string. server host name.     example: "localhost",
"database_name"  - string. postgress database name . example : "test",
"user_name"      - string. example: "postgres", 
"user_password"  - string. example: "123" (optonal). If password empty just remove this key , 
"port"           - string. example: "5432",
"backup_dir"     - string. Folder to collect backups. example: "/var/db_backup"
"backup_file_postfix" - string. Postfix for backup file.   Пример: "_%Y-%m-%d_%H:%M:%S" 

Main file utility

used libraries : subprocess, shlex, datetime, os, time, json working with: dropdb, createdb, pg_restore, pg_dump

After run :

1 - Backup   (create dump)
2 - Restore  (restore from dump)
3 - Exit     

Backup process create file "<database_name>_<backup_file_postfix>" in backup folder (configuration parameter "backup_dir")

Restore process show all files in "backup_dir" and wait for input number of file

Select file
0 - test_2021-12-14_17:11:14.dmp
1 - test_2021-12-14_17:10:56.dmp
2 - test_2021-12-14_17:09:43.dmp
3 - test_2021-12-14_17:08:32.dmp
4 - test_2021-12-14_17:05:32.dmp
5 - test_2021-12-14_16:54:45.dmp