Redis集群设置密码
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注意事项:
1.如果是使用redis-trib.rb工具构建集群,集群构建完成前不要配置密码,集群构建完毕再通过config set + config rewrite命令逐个机器设置密码
2.如果对集群设置密码,那么requirepass和masterauth都需要设置,否则发生主从切换时,就会遇到授权问题,可以模拟并观察日志
3.各个节点的密码都必须一致,否则Redirected就会失败
测试版本:
redis3.0.7
测试环境:
centos7
集群规模:
3主3从
集群构建成功前的redis配置:
集群构建成功后的redis配置:
测试:
1.8002是主,8005是8002的从,现在要kill掉8002模拟主从切换
2.查看8005的日志,8005最终被选举成新的master
21227:S 14 Jun 07:28:49.343 # Connection with master lost.
21227:S 14 Jun 07:28:49.343 * Caching the disconnected master state.
21227:S 14 Jun 07:28:49.433 * Connecting to MASTER 127.0.0.1:8002
21227:S 14 Jun 07:28:49.433 * MASTER <-> SLAVE sync started
21227:S 14 Jun 07:28:49.434 # Error condition on socket for SYNC: Connection refused
21227:S 14 Jun 07:28:50.437 * Connecting to MASTER 127.0.0.1:8002
21227:S 14 Jun 07:29:06.205 # Start of election delayed for 564 milliseconds (rank #0, offset 337).
21227:S 14 Jun 07:29:06.507 * Connecting to MASTER 127.0.0.1:8002
21227:S 14 Jun 07:29:06.507 * MASTER <-> SLAVE sync started
21227:S 14 Jun 07:29:06.507 # Error condition on socket for SYNC: Connection refused
21227:S 14 Jun 07:29:06.808 # Starting a failover election for epoch 10.
21227:S 14 Jun 07:29:06.810 # Failover election won: I'm the new master.
21227:S 14 Jun 07:29:06.810 # configEpoch set to 10 after successful failover
21227:M 14 Jun 07:29:06.810 * Discarding previously cached master state.
3.再次启动8002,查看8005的日志,8002已经变成8005的slave
21227:M 14 Jun 07:32:53.511 * Slave 127.0.0.1:8002 asks for synchronization
21227:M 14 Jun 07:32:53.511 * Full resync requested by slave 127.0.0.1:8002
21227:M 14 Jun 07:32:53.511 * Starting BGSAVE for SYNC with target: disk
21227:M 14 Jun 07:32:53.511 * Background saving started by pid 21613
21613:C 14 Jun 07:32:53.513 * DB saved on disk
21613:C 14 Jun 07:32:53.513 * RDB: 0 MB of memory used by copy-on-write
21227:M 14 Jun 07:32:53.612 * Background saving terminated with success
21227:M 14 Jun 07:32:53.612 * Synchronization with slave 127.0.0.1:8002 succeeded
4.简单测试了GET SET命令,正常
原文出自:http://blog.csdn.net/daiyudong2020/article/details/51674169
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