63 lines
1.8 KiB
Plaintext
63 lines
1.8 KiB
Plaintext
##主库配置
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##为从库创建复制用户
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su - pgsql
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/usr/local/postgresql/bin/psql -d postgres
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CREATE ROLE replicator login replication encrypted password 'DsideaL147258369';
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##设置权限
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vi /usr/local/postgresql/data/pg_hba.conf
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host replication replicator 10.10.14.72/32 md5
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##修改postgresql.conf配置文件
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vi /usr/local/postgresql/data/postgresql.conf
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max_connections = 100 #这个设置要注意下，据说从库的max_connections必须要大于主库的
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archive_mode = on #开启归档
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wal_level = logical
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max_wal_senders = 32 #设置可以最多有几个流复制连接
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wal_sender_timeout = 60s
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wal_compression = on #启用WAL压缩,可以减小WAL日志的大小,减少磁盘空间的使用和网络传输的开销。但启用WAL压缩会增加CPU负载。
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##重启
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/usr/local/postgresql/bin/pg_ctl -D /usr/local/postgresql/data -l logfile restart
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##从库配置
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##切换用户
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su - pgsql
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##先关闭从库服务
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/usr/local/postgresql/bin/pg_ctl -D /usr/local/postgresql/data -l logfile stop
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cd /usr/local/postgresql
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##清空数据文件夹
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rm -rf /usr/local/postgresql/data
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##从主节点获取数据
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/usr/local/postgresql/bin/pg_basebackup -h 10.10.14.71 -p 5432 -U replicator -Fp -Xs -Pv -R -D /usr/local/postgresql/data
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##修改standby.signal文件
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vi /usr/local/postgresql/data/standby.signal
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standby_mode = 'no'
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##修改postgresql.conf文件
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vi /usr/local/postgresql/data/postgresql.conf
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primary_conninfo = 'host=10.10.14.71 port 5432 user=replicator password=DsideaL147258369'
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recovery_target_timeline = 'latest'
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max_connections = 200 #注意要大于主节点
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hot_standby = on
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max_standby_streaming_delay = 30s
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wal_receiver_status_interval = 10s
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hot_standby_feedback = on
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##启动从库
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/usr/local/postgresql/bin/pg_ctl -D /usr/local/postgresql/data -l logfile start
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##验证主从，在主库执行如下语句
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select * from pg_stat_replication;
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