pg10@pghost4->psql -h 10.10.10.15 -p 9999 postgres pg10
Password for user pg10:
psql (10.0)
Type "help" for help.

創(chuàng)新互聯(lián)是一家集網(wǎng)站建設(shè),夏縣企業(yè)網(wǎng)站建設(shè),夏縣品牌網(wǎng)站建設(shè),網(wǎng)站定制,夏縣網(wǎng)站建設(shè)報(bào)價(jià),網(wǎng)絡(luò)營(yíng)銷,網(wǎng)絡(luò)優(yōu)化,夏縣網(wǎng)站推廣為一體的創(chuàng)新建站企業(yè)，幫助傳統(tǒng)企業(yè)提升企業(yè)形象加強(qiáng)企業(yè)競(jìng)爭(zhēng)力?？沙浞譂M足這一群體相比中小企業(yè)更為豐富、高端、多元的互聯(lián)網(wǎng)需求。同時(shí)我們時(shí)刻保持專業(yè)、時(shí)尚、前沿，時(shí)刻以成就客戶成長(zhǎng)自我，堅(jiān)持不斷學(xué)習(xí)、思考、沉淀、凈化自己，讓我們?yōu)楦嗟钠髽I(yè)打造出實(shí)用型網(wǎng)站。

postgres=# show pool_nodes;
node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay
---------+----------+------+--------+-----------+---------+------------+-------------------+-------------------
0 | pghost4 | 1921 | down | -nan | standby | 0 | false | 0
1 | pghost5 | 1921 | up | -nan | standby | 0 | true | 0
(2 rows)

postgres=# exit
postgres-# \q
pg10@pghost4->pg_controldata|grep cluster
Database cluster state: in production
pg10@pghost4->cd /data/pg10@pghost4->ll
br/>pg10@pghost4->ll
drwx------. 2 root root 16K Dec 6 23:28 lost+found
drwxr-xr-x 3 pg10 pg10 4.0K Dec 18 23:56 pg10
drwxr-xr-x 3 pg932 pg932 4.0K Dec 6 19:57 pg932
pg10@pghost4->cd pg10/pg10@pghost4->ll
br/>pg10@pghost4->ll
drwx------ 19 pg10 pg10 4.0K Dec 20 22:58 data
-rw-rw-r-- 1 pg10 pg10 2.8M Dec 18 23:56 data.tar.gz
pg10@pghost4->cd datapg10@pghost4->ll
br/>pg10@pghost4->ll
drwx------ 5 pg10 pg10 4.0K Dec 18 22:27 base
drwx------ 2 pg10 pg10 4.0K Dec 20 22:59 global
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_commit_ts
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_dynshmem
-rw------- 1 pg10 pg10 4.7K Dec 20 22:56 pg_hba.conf
-rw------- 1 pg10 pg10 1.6K Dec 18 22:27 pg_ident.conf
drwx------ 4 pg10 pg10 4.0K Dec 20 23:03 pg_logical
drwx------ 4 pg10 pg10 4.0K Dec 18 22:27 pg_multixact
drwx------ 2 pg10 pg10 4.0K Dec 20 22:58 pg_notify
drwx------ 2 pg10 pg10 4.0K Dec 19 00:36 pg_replslot
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_serial
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_snapshots
drwx------ 2 pg10 pg10 4.0K Dec 20 22:58 pg_stat
drwx------ 2 pg10 pg10 4.0K Dec 21 00:10 pg_stat_tmp
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_subtrans
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_tblspc
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_twophase
-rw------- 1 pg10 pg10 3 Dec 18 22:27 PG_VERSION
drwx------ 3 pg10 pg10 4.0K Dec 20 22:57 pg_wal
drwx------ 2 pg10 pg10 4.0K Dec 18 22:27 pg_xact
-rw------- 1 pg10 pg10 88 Dec 18 22:27 postgresql.auto.conf
-rw------- 1 pg10 pg10 23K Dec 18 23:50 postgresql.conf
-rw------- 1 pg10 pg10 31 Dec 20 22:58 postmaster.opts
-rw------- 1 pg10 pg10 74 Dec 20 22:58 postmaster.pid
-rw-r--r-- 1 pg10 pg10 5.8K Dec 20 21:34 recovery.donepg10@pghost4->exit
br/>pg10@pghost4->exit
[root@pghost4 etc]# pgpool stop
.done.
[root@pghost4 etc]# pgpool -C -D
[root@pghost4 etc]# su - pg10
pg10@pghost4->psql -h 10.10.10.15 -p 9999 postgres pg10
Password for user pg10:
psql (10.0)
Type "help" for help.

postgres=# show pool_nodes;
node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay
---------+----------+------+--------+-----------+---------+------------+-------------------+-------------------
0 | pghost4 | 1921 | up | -nan | primary | 0 | true | 0
1 | pghost5 | 1921 | up | -nan | standby | 0 | false | 0
(2 rows)

postgres=#

pgpool stop #先關(guān)閉

pgpool -C -D #-C清除緩存 -Ddisk-status丟棄pgpool_status文件，不恢復(fù)以前的狀態(tài)

然后重新連接

psql -p 9999

參考文檔
https://blog.csdn.net/lk_db/article/details/77943776
https://blog.csdn.net/qq_34714193/article/details/88764548