Question

我正在使用repmgr进行复制。我已成功将主节点注册到repmgr。我成功克隆了Master节点＆amp;启动备用服务器。但问题是我无法在repmgr中注册Standby节点。

我使用的是版本repmgr 2.0beta1（PostgreSQL 9.3.2）。 Os：Ubuntu 14.04 LTS

注册备用节点时。

$ repmgr -f /etc/repmgr/repmgr.conf --verbose standby register
Opening configuration file: /etc/repmgr/repmgr.conf
[2015-03-31 11:43:19] [WARNING] pg_bindir//usr/lib/postgresql/9.3/bin: Unknown name/value pair!
[2015-03-31 11:43:19] [INFO] repmgr connecting to standby database
[2015-03-31 11:43:19] [INFO] repmgr connected to standby, checking its state
[2015-03-31 11:43:19] [INFO] repmgr connecting to master database
[2015-03-31 11:43:19] [INFO] finding node list for cluster 'test'
[2015-03-31 11:43:19] [INFO] checking role of cluster node 'host=127.0.0.1 user=repmgr_usr dbname=repmgr_db'
[2015-03-31 11:43:19] [ERROR] A master must be defined before configuring a slave

出现此错误。

On Standby Postgres LOG :(使用log_connections = on，log_disconnections = on）

$ tail -f /var/log/postgresql/postgresql-9.3-main.log
2015-03-31 11:38:51 IST LOG:  disconnection: session time: 0:00:00.011 user=repmgr_usr database=repmgr_db host=127.0.0.1 port=53055
2015-03-31 11:38:51 IST LOG:  could not receive data from client: Connection reset by peer
2015-03-31 11:38:51 IST LOG:  disconnection: session time: 0:00:00.029 user=repmgr_usr database=repmgr_db host=127.0.0.1 port=53054
2015-03-31 11:43:19 IST LOG:  connection received: host=127.0.0.1 port=53061
2015-03-31 11:43:19 IST LOG:  connection authorized: user=repmgr_usr database=repmgr_db
2015-03-31 11:43:19 IST LOG:  connection received: host=127.0.0.1 port=53062
2015-03-31 11:43:19 IST LOG:  connection authorized: user=repmgr_usr database=repmgr_db
2015-03-31 11:43:19 IST LOG:  disconnection: session time: 0:00:00.008 user=repmgr_usr database=repmgr_db host=127.0.0.1 port=53062
2015-03-31 11:43:19 IST LOG:  could not receive data from client: Connection reset by peer
2015-03-31 11:43:19 IST LOG:  disconnection: session time: 0:00:00.025 user=repmgr_usr database=repmgr_db host=127.0.0.1 port=53061

我在LOG 中收到错误“无法从客户端接收数据：连接由同行重置”

On Master Postgres LOG :(使用log_connections = on，log_disconnections = on）

$tail -f /var/log/postgresql/postgresql-9.3-main.log
2015-03-31 11:25:18 IST LOG:  connection authorized: user=postgres database=postgres
2015-03-31 11:25:18 IST LOG:  disconnection: session time: 0:00:00.010 user=postgres database=postgres host=[local]
2015-03-31 11:25:19 IST LOG:  connection received: host=[local]
2015-03-31 11:25:19 IST LOG:  connection authorized: user=postgres database=postgres
2015-03-31 11:25:19 IST LOG:  disconnection: session time: 0:00:00.002 user=postgres database=postgres host=[local]
2015-03-31 11:25:19 IST LOG:  connection received: host=[local]
2015-03-31 11:25:19 IST LOG:  connection authorized: user=postgres database=postgres
2015-03-31 11:25:19 IST LOG:  disconnection: session time: 0:00:00.002 user=postgres database=postgres host=[local]
2015-03-31 11:26:14 IST LOG:  connection received: host=192.168.1.218 port=40381
2015-03-31 11:26:14 IST LOG:  replication connection authorized: user=repmgr_usr

我认为此日志中没有关于备用连接的详细信息。（我不确定bcoz我不知道）

掌握repmgr.conf：

cluster=test
node=1
node_name=node1
conninfo='host=127.0.0.1 user=repmgr_usr dbname=repmgr_db'
pg_bindir=/usr/lib/postgresql/9.3/bin

备用repmgr.conf

cluster=test
node=2
node_name=node2
conninfo='host=localhost user=repmgr_usr dbname=repmgr_db'
pg_bindir='/usr/lib/postgresql/9.3/bin'

master＆amp;待机postgres.conf

listen_addresses='*'
wal_level = 'hot_standby'
archive_mode = on
archive_command = 'cd .'       
max_wal_senders = 10
wal_keep_segments = 5000    
hot_standby = on
log_connections = on
log_disconnections = on

master＆amp; stanby pg_hba.conf

host    repmgr_db       repmgr_usr  192.168.1.0/24         trust
host    replication     repmgr_usr  192.168.1.0/24         trust
host    repmgr_db       repmgr_usr  127.0.0.1/24         trust
host    replication     repmgr_usr  127.0.0.1/24         trust

备用节点中的群集详细信息：

$ repmgr -f /etc/repmgr/repmgr.conf cluster show
[2015-03-31 12:06:17] [WARNING] pg_bindir//usr/lib/postgresql/9.3/bin: Unknown name/value pair!
Role      | Connection String 
  standby | host=127.0.0.1 user=repmgr_usr dbname=repmgr_db

主节点中的群集详细信息：

$ repmgr -f /etc/repmgr/repmgr.conf cluster show
[2015-03-31 12:07:46] [WARNING] pg_bindir//usr/lib/postgresql/9.3/bin: Unknown name/value pair!
Role      | Connection String 
* master  | host=127.0.0.1 user=repmgr_usr dbname=repmgr_db

请在这个问题上帮助我。

Answer 1

最后我通过更改repmgr.conf文件解决了这个问题。我改变了

conninfo='host=localhost user=repmgr_usr dbname=repmgr_db'

与

conninfo='host=192.168.1.205 user=repmgr_usr dbname=repmgr_db'

即..在Config文件中，我们必须提供群集解析的IP地址或名称。

repmgr错误：必须在配置从站之前定义主站

1 个答案: