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
config set masterauth abc config set requirepass abc config rewrite
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:
port 8000 cluster-enabled yes cluster-config-file "nodes-8000.conf" cluster-node-timeout 15000 dir "/opt/redisdata" appendonly yes appendfilename "appendonly-8000.aof" logfile "/opt/redisdata/8000.log" daemonize yes pidfile "/var/run/redis-8000.pid" dbfilename "dump-8000.rdb" cluster-require-full-coverage no
集群构建成功后的redis配置:
port 8004 cluster-enabled yes cluster-config-file "nodes-8004.conf" cluster-node-timeout 15000 dir "/opt/redisdata" appendonly yes appendfilename "appendonly-8004.aof" logfile "/opt/redisdata/8004.log" daemonize yes pidfile "/var/run/redis-8004.pid" dbfilename "dump-8004.rdb" cluster-require-full-coverage no # Generated by CONFIG REWRITE requirepass "abc" masterauth "abc"
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
以上这篇基于redis集群设置密码的实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
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稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?
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