CentOS Stream 9
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PostgreSQL 15 : Backup and Restore
2022/12/08
 
For Backup and Restore PostgreSQL Data, it's possible to run with [pg_dump] and [pg_restore].
[1] Backup Databases.
# available types for [--format=*]
#     p = plain (SQL)
#     c = custom (compression)
#     t = tar
#     d = directory

# [cent] user takes backup of [testdb]
[cent@www ~]$
pg_dump -U cent --format=t -d testdb > pg_testdb.tar

[cent@www ~]$
total 8
-rw-r--r--. 1 cent cent 6656 Dec  8 13:14 pg_testdb.tar


# admin user [postgres] takes backup of all databases

[postgres@www ~]$
pg_dumpall -f ~/backups/pg_DB_all.sql

[postgres@www ~]$
ll ~/backups

total 4
-rw-r--r--. 1 postgres postgres 3234 Dec  8 13:15 pg_DB_all.sql
[2] Restore Databases.
# [cent] user restores [testdb] database from backup file

[cent@www ~]$
pg_restore -U cent -d testdb pg_testdb.tar

# admin user [postgres] restores all database from backup file
# if the type of backup file is SQL text, use [psql] command for restoring

[postgres@www ~]$
psql -f ~/backups/pg_DB_all.sql

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