标签：6351 redis Redis 192.168 四十 集群 master slots 4.51
环境准备 准备 6台(51-56) redis服务器 以默认配置运行redis服务即可 一.创建Redis集群 1.启用集群功能( 51-56 都要配置) ]# netstat -antupl |grep :6379（要有东西） ]# /etc/init.d/redis_6379 stop *一一对应，以52为例* ]# vim /etc/redis/6379.conf 70 bind 192.168.4.52 93 port 6352 815 cluster-enabled yes 823 cluster-config-file nodes-6352.conf 829 cluster-node-timeout 5000 :wq ]# /etc/init.d/redis_6379 start ]# netstat -utnlp | grep redis-server tcp 0 0 192.168.4.52:6352 0.0.0.0:* LISTEN 7469/redis-server 1 tcp 0 0 192.168.4.52:16352 0.0.0.0:* LISTEN 7469/redis-server 1 ]# cat /var/lib/redis/6379/nodes-6352.conf 查看集群信息文件 ee0ff6941c920977e98966a80a6b1835ec4944f6 :0@0 myself,master - 0 0 0 connected vars currentEpoch 0 lastVoteEpoch 0 2 创建集群 2.1 部署ruby脚本执行环境 (192.168.4.51) ]# cd nosql/ ]# yum -y install ruby rubygems ]# rpm -ivh ruby-devel-2.0.0.648-30.el7.x86_64.rpm ]# gem install redis-3.2.1.gem 2.2 创建管理集群的ruby脚本 ]# echo $PATH ]# mkdir /root/bin /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin ]# cp redis-4.0.8/src/redis-trib.rb /root/bin/ ]# chmod +x /root/bin/redis-trib.rb ]# redis-trib.rb help 2.3 创建集群 ]# redis-trib.rb create --replicas 1 \ > 192.168.4.51:6351 192.168.4.52:6352 \ > 192.168.4.53:6353 192.168.4.54:6354 \ > 192.168.4.55:6355 192.168.4.56:6356 ... Can I set the above configuration? (type 'yes' to accept): yes(输入yes) ... [OK] All 16384 slots covered. 3 查看集群中主机状态信息 ]# cat /var/lib/redis/6379/nodes-6354.conf ]# redis-cli -h 192.168.4.54 -p 6354 > cluster info > cluster nodes 集群创建失败的解决办法 ]# redis-cli -h x.x.x.x -p xxxx shutdown ]# rm -rf /var/lib/redis/6379/* ]# /etc/init.d/redis_6379 start ]# netstat -utnlp | grep redis_server 再次执行创建集群命令 4 测试集群 在192.168.4.50 访问集群存取数据(可以连接任意一台主库的ip地址) ]# redis-cli -c -h 192.168.4.51 -p 6351 192.168.4.51:6351> keys * (empty list or set) 192.168.4.51:6351> 192.168.4.51:6351> set x 101 192.168.4.53:6353> keys * 1) "x" 主库对应的从库，会自动把数据同步到本机。 在管理主机51上 执行如下操作 ]# redis-trib.rb info 192.168.4.51:6351 查看数据存储情况 192.168.4.51:6351 (aa919b76...) -> 0 keys | 5461 slots | 1 slaves. 192.168.4.52:6352 (83d43aaf...) -> 0 keys | 5462 slots | 1 slaves. 192.168.4.53:6353 (46a1d2ec...) -> 1 keys | 5461 slots | 1 slaves. ]# redis-trib.rb check 192.168.4.51:6351 查看集群信息 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) S: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots: (0 slots) slave replicates 83d43aaf83697e4f76947c3b4b534912a02b9048 M: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:10923-16383 (5461 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... 主库 从库 51 -- 55 52 -- 56 53 -- 54 主库 宕机后，对应的从库会自动升级为主库(52宕机，56主库） ]# redis-cli -h 192.168.4.52 -p 6352 shutdown ]# redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:5461-10922 (5462 slots) master 0 additional replica(s) M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:10923-16383 (5461 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 开启52,变为56的从库 l52 utils]# /etc/init.d/redis_6379 start ]# redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:10923-16383 (5461 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 二.管理集群 准备2台新的虚拟机ip 地址分别为 192.168.4.57 192.168.4.58 运行redis服务并启用的集群配置 ]# /etc/init.d/redis_6379 stop ]# vim /etc/redis/6379.conf(52为例子） 70 bind 192.168.4.52 93 port 6352 815 cluster-enabled yes 823 cluster-config-file nodes-6352.conf 829 cluster-node-timeout 5000 :wq ]# /etc/init.d/redis_6379 start ]# netstat -utnlp | grep redis-server 2.1 向集群里添加新主机 2.1.1 添加master角色主机 (添加 192.168.4.57，在51操作) ]# redis-trib.rb add-node 192.168.4.57:6357 192.168.4.51:6351 ]# redis-trib.rb check 192.168.4.51:6351 查看 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:5461-10922 (5462 slots) master 1 additional replica(s) M: 7ac349e23d72f46967eeb0ef6b022c27396a4388 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:10923-16383 (5461 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. ]# redis-trib.rb reshard 192.168.4.51:6351 重新分片 指定移出hash槽个数 4096 指定接收hash槽主机ID 57主机的ID值 指定移出hash槽主机ID all 同意这样分片 yes 查看分片 ]# redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:6827-10922 (4096 slots) master 1 additional replica(s) M: 7ac349e23d72f46967eeb0ef6b022c27396a4388 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 0 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:12288-16383 (4096 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 客户端连接主库57 可以存取数据 ]# redis-cli -c -h 192.168.4.57 -p 6357 192.168.4.57:6357> ping PONG 192.168.4.57:6357> set key 111 -> Redirected to slot [12539] located at 192.168.4.53:6353 OK 192.168.4.53:6353> get key "111" 192.168.4.53:6353> keys * 1) "key" 2) "x" 2.1.2 添加slave角色主机 (添加slave 192.168.4.58 51上操作） ]# redis-trib.rb add-node --slave 192.168.4.58:6358 192.168.4.51:6351 ]# redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:6827-10922 (4096 slots) master 1 additional replica(s) M: 7ac349e23d72f46967eeb0ef6b022c27396a4388 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 1 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 S: a28a8ad17defa60a4169262a909a17e46d5ce699 192.168.4.58:6358 slots: (0 slots) slave replicates 7ac349e23d72f46967eeb0ef6b022c27396a4388 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:12288-16383 (4096 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 自动分配给57 客户端连接主库58 可以查看到数据 ]# redis-cli -c -h 192.168.4.58 -p 6358 192.168.4.58:6358> set t2 333 -> Redirected to slot [4748] located at 192.168.4.51:6351 OK 192.168.4.51:6351> keys * 1) "t2" 192.168.4.51:6351> set t3 444 -> Redirected to slot [685] located at 192.168.4.57:6357 OK 192.168.4.57:6357> keys * 1) "t3" 192.168.4.57:6357> set t4 444 -> Redirected to slot [12874] located at 192.168.4.53:6353 OK 192.168.4.53:6353> keys * 1) "t4" 2) "key" 3) "x" 2.2 从集群里移除主机 2.2.1 移除slave角色主机 (移除192.168.4.58，51操作) redis-trib.rb del-node 任意主机 被移除主机ID(slave主机没有haxi槽，可直接移除） ]# redis-trib.rb del-node 192.168.4.51:6351 a28a8ad17defa60a4169262a909a17e46d5ce699 ]# redis-trib.rb check 192.168.4.51:6351 此时没有58的slave信息 2.2.2 移除master角色主机 (移除 192.168.4.57 51操作) 释放占用的hash槽 ]# redis-trib.rb reshard 192.168.4.51:6351 指定移出hash槽个数 4096 指定接收hash槽主机ID 写任意一个主库ID值 Source node #1: 写57主机的ID值 Source node #2: done 同意这样分片 yes 移除master主机 ]# redis-trib.rb del-node 192.168.4.51:6351 7ac349e23d72f46967eeb0ef6b022c27396a4388 检测集群 ]# redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:0-6826,10923-12287 (8192 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:12288-16383 (4096 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 重新平均分配hash槽 ]# redis-trib.rb rebalance 192.168.4.51:6351 ]# redis-trib.rb check 192.168.4.51:6351 查看 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: aa919b76cfddf094256a228b84f63087dc2b6af3 192.168.4.51:6351 slots:2731-6826,10923-12287 (5461 slots) master 1 additional replica(s) M: 8252253a0e18bdc7151027080e01477967ed1364 192.168.4.56:6356 slots:0-1365,6827-10922 (5462 slots) master 1 additional replica(s) S: 83d43aaf83697e4f76947c3b4b534912a02b9048 192.168.4.52:6352 slots: (0 slots) slave replicates 8252253a0e18bdc7151027080e01477967ed1364 M: 46a1d2ecee4ac309c3557295900182a43dd611d4 192.168.4.53:6353 slots:1366-2730,12288-16383 (5461 slots) master 1 additional replica(s) S: 1b2535c616fcdc4fec50369e3e0fdc0f998ab041 192.168.4.55:6355 slots: (0 slots) slave replicates aa919b76cfddf094256a228b84f63087dc2b6af3 S: ca21191e7430151953267f46fc9dc310f7e08b0b 192.168.4.54:6354 slots: (0 slots) slave replicates 46a1d2ecee4ac309c3557295900182a43dd611d4 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. 把redis集群里的主机 恢复为独立的redis服务器(51-58) ]# redis-cli -h 192.168.4.51 -p 6351 shutdown ]# rm -rf /var/lib/redis/6379/* ]# vim /etc/redis/6379.conf (把与集群配置相关的 3项 注释) ]# /etc/init.d/redis_6379 start ]# netstat -utnlp | grep redis-server标签：6351,redis,Redis,192.168,四十,集群,master,slots,4.51 来源： https://www.cnblogs.com/luwei0915/p/10494096.html
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