pgsql時間錯誤問題

mydb@[local]:5432=#select now();
now
-------------------------------
2021-07-05 08:07:22.981157+08

mydb@[local]:5432=# show time zone;
TimeZone
---------------
Asia/Shanghai
(1 row)

檢視可供選擇的時區

mydb@[local]:5432=#select * from pg_timezone_names;
                  name                  
 
| abbrev | utc_offset | is_dst
----------------------------------------+--------+------------+--------
 Africa/Accra                           | GMT    | 00:00:00   | f
 Africa/Algiers                         | CET    | 01:00:00   | f
 Africa/Bissau                          | GMT    | 00:00:00   | f
 Africa/Casablanca                      |
 
 WEST   | 01:00:00   | t
 Africa/Ceuta                           | CEST   | 02:00:00   | t
 Africa/El_Aaiun                        | WEST   | 01:00:00   | t
 Africa/Monrovia                        | GMT    | 00:00:00   | f
 Africa/Ndjamena                        | WAT    | 01:00:00   | f
 Africa/Tunis                           | CET    |
 
 01:00:00   | f
 Africa/Windhoek                        | WAT    | 01:00:00   | f
 Africa/Abidjan                         | GMT    | 00:00:00   | f
 Africa/Bamako                          | GMT    | 00:00:00   | f
 Africa/Banjul                          | GMT    | 00:00:00   | f
 Africa/Conakry                         | GMT    | 00:00:00   | f

中國公用時間（PRC指：People's Republic of China）

mydb@[local]:5432=#select * from pg_timezone_names where name = 'PRC';
name | abbrev | utc_offset | is_dst
------+--------+------------+--------
PRC | CST | 08:00:00 | f
(1 row)

修改配置檔案

[root@s101 /var/lib/pgsql/13/data]#nano postgresql.conf
log_timezone = 'PRC'

timezone = 'PRC'

重啟資料庫

[root@s101 /var/lib/pgsql/13/data]#sudo systemctl restart postgresql-13

再次檢視還是沒變

原來是系統時間錯誤

設定系統時間

https://blog.csdn.net/weixin_43545225/article/details/106118354

再次檢視