psql: FATAL: the database system is starting up

Posted 2022-07-30 丹心明月

pg9.6.1
在搭建同步流复制的standby库时，启动备库时，报错：
[postgres@pghs ~]$ psql
psql: FATAL:  the database system is starting up

后经检查，是postgresql.conf中hot_standby没有设置：
hot_standby = on

成功：
 [postgres@pghs ~]$ psql
psql (9.6.1)
Type "help" for help.

postgres=#

后经大神提点，在执行psql报错的时候，并非是启动备库时，只是是在连接备库时，此时备库时正常的，只是连不上：
[postgres@pghs datass]$ psql
psql: FATAL:  the database system is starting up
[postgres@pghs datass]$  ps -ef | grep postgres
root      1822  1777  0 01:00 pts/0    00:00:00 su - postgres
postgres  1823  1822  0 01:00 pts/0    00:00:00 -bash
postgres  1873  1823  0 01:01 pts/0    00:00:00 psql
root      3962  3942  0 14:35 pts/2    00:00:00 su - postgres
postgres  3963  3962  0 14:35 pts/2    00:00:00 -bash
postgres  4084     1  0 14:41 pts/2    00:00:00 /usr/pg/postgresql-9.6.1/bin/postgres -D /PostgreSQL/9.6.1/datass
postgres  4085  4084  0 14:41 ?        00:00:00 postgres: logger process                                         
postgres  4086  4084  0 14:41 ?        00:00:00 postgres: startup process   recovering 000000010000000000000015  
postgres  4087  4084  0 14:41 ?        00:00:00 postgres: checkpointer process                                   
postgres  4088  4084  0 14:41 ?        00:00:00 postgres: writer process                                         
postgres  4096  3963  0 14:42 pts/2    00:00:00 ps -ef
postgres  4097  3963  0 14:42 pts/2    00:00:00 grep postgres
[postgres@pghs datass]$ netstat -a | grep PGSQL
unix  2      [ ACC ]     STREAM     LISTENING     19502  /tmp/.s.PGSQL.5432
[postgres@pghs datass]$