pg_basebackup: add page (#18698)

Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>
Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>

pages/common/pg_basebackup.md

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+# pg_basebackup
+
+> Take a base backup of a running PostgreSQL cluster.
+> Used for full or incremental backups, point-in-time recovery, or setting up replication standbys.
+> More information: <https://www.postgresql.org/docs/current/app-pgbasebackup.html>.
+
+- Take a base backup from a remote PostgreSQL server:
+
+`pg_basebackup {{[-h|--host]}} {{host}} {{[-D|--pgdata]}} {{path/to/backup_dir}}`
+
+- Take a backup with progress shown:
+
+`pg_basebackup {{[-h|--host]}} {{host}} {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-P|--progress]}}`
+
+- Create a compressed backup (`gzip`) in tar format:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-F|--format]}} {{[t|tar]}} {{[-z|--gzip]}}`
+
+- Create an incremental backup using a previous manifest file:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-i|--incremental]}} {{path/to/old_manifest}}`
+
+- Write a recovery configuration for setting up a standby:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-R|--write-recovery-conf]}}`
+
+- Relocate a tablespace during backup:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-T|--tablespace-mapping]}} {{path/to/old_tablespace}}={{path/to/new_tablespace}}`
+
+- Limit transfer rate to reduce server load:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-r|--max-rate]}} {{100M}}`
+
+- Stream WAL logs while taking the backup:
+
+`pg_basebackup {{[-D|--pgdata]}} {{path/to/backup_dir}} {{[-X|--wal-method]}} stream`