PostgrelSQL清除WAL日志

1. 查看当前日志回写情况

pg_controldata

pg_control version number: 1300
Catalog version number: 202007201
Database system identifier: 6978101400539662106
Database cluster state: in production
pg_control last modified: Fri 06 May 2022 09:09:01 AM CST
Latest checkpoint location: 121F/BBC01308
Latest checkpoint’s REDO location: 121F/BA94EF20
Latest checkpoint’s REDO WAL file: 000000010000121F000000BA
Latest checkpoint’s TimeLineID: 1
Latest checkpoint’s PrevTimeLineID: 1
Latest checkpoint’s full_page_writes: on
Latest checkpoint’s NextXID: 0:3354007421
Latest checkpoint’s NextOID: 2251155
Latest checkpoint’s NextMultiXactId: 1
Latest checkpoint’s NextMultiOffset: 0
Latest checkpoint’s oldestXID: 3157544777
Latest checkpoint’s oldestXID’s DB: 14174
Latest checkpoint’s oldestActiveXID: 3354007411
Latest checkpoint’s oldestMultiXid: 1
Latest checkpoint’s oldestMulti’s DB: 14174
Latest checkpoint’s oldestCommitTsXid:0
Latest checkpoint’s newestCommitTsXid:0
Time of latest checkpoint: Fri 06 May 2022 09:08:47 AM CST
Fake LSN counter for unlogged rels: 0/3E8
Minimum recovery ending location: 0/0
Min recovery ending loc’s timeline: 0
Backup start location: 0/0
Backup end location: 0/0
End-of-backup record required: no
wal_level setting: replica
wal_log_hints setting: on
max_connections setting: 1000
max_worker_processes setting: 8
max_wal_senders setting: 10
max_prepared_xacts setting: 0
max_locks_per_xact setting: 1024
track_commit_timestamp setting: off
Maximum data alignment: 8
Database block size: 8192
Blocks per segment of large relation: 131072
WAL block size: 8192
Bytes per WAL segment: 16777216
Maximum length of identifiers: 64
Maximum columns in an index: 32
Maximum size of a TOAST chunk: 1996
Size of a large-object chunk: 2048
Date/time type storage: 64-bit integers
Float8 argument passing: by value
Data page checksum version: 0
Mock authentication nonce: ffc376c6b9c85d47e306f8541e9dfc94437d4a1a2df4d533c24ebb674355e194
[root@db1 data]#

记下 Latest checkpoint’s REDO WAL file的值：000000010000121F000000BA

2. 清除归档文件

pg_archivecleanup -d "/data/archivedir/" 000000010000121F000000BA

3. 清除日志文件

pg_archivecleanup -d "/data/pgsql/pg_wal/" 000000010000121F000000BA