1.管理集群 2.添加新节点 3.添加从节点 练习添加主机 练习删除主机
环境准备: 1.准备两台新主机,开启redis服务(开启集群功能) 2.修改启动脚本
58主机 [[email protected] ~]# redis-cli -h 192.168.4.57 -p 6357 192.168.4.57:6357> keys * (empty list or set) 192.168.4.57:6357> cluster info cluster_state:fail cluster_slots_assigned:0 cluster_slots_ok:0 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:1 cluster_size:0 cluster_current_epoch:0 cluster_my_epoch:0 cluster_stats_messages_sent:0 cluster_stats_messages_received:0 192.168.4.57:6357> cluster nodes 19b1545610997954ec6370bafac834a54efc02d7 :[email protected] myself,master - 0 0 0 connected
检查(51~56)是否能通信: [[email protected] ~]# ping -c2 192.168.4.52
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 //检查集群信息
添加master新的主机:新主机做集群配置,并运行 redis 服务
1.添加从节点# ./redis-trib.rb add-node --slave --master-id id 值 #从节点 ip: 端口 192.168.4.51:6351
[[email protected] src]# ./redis-trib.rb add-node 192.168.4.57:6357 192.168.4.51:6351 >>> Adding node 192.168.4.57:6357 to cluster 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:10923-16383 (5461 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Send CLUSTER MEET to node 192.168.4.57:6357 to make it join the cluster. [OK] New node added correctly.
2.查看集群信息:[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:10923-16383 (5461 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
3.对集群进行重新分片(0~16383)[[email protected] src]# ./redis-trib.rb reshard 192.168.4.51:6351 [[email protected] src]# ./redis-trib.rb add-node 192.168.4.57:6357 192.168.4.51:6351 >>> Adding node 192.168.4.57:6357 to cluster 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:10923-16383 (5461 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Send CLUSTER MEET to node 192.168.4.57:6357 to make it join the cluster. [OK] New node added correctly. [[email protected] src]# [[email protected] src]# ./redis-trib.rb reshard 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:10923-16383 (5461 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. How many slots do you want to move (from 1 to 16384)? 4096 What is the receiving node ID? 19b1545610997954ec6370bafac834a54efc02d7 Please enter all the source node IDs. Type 'all' to use all the nodes as source nodes for the hash slots. Type 'done' once you entered all the source nodes IDs. Source node #1: all
Ready to move 4096 slots. Source nodes: M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:0-5460 (5461 slots) master 1 additional replica(s) M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:5461-10922 (5462 slots) master 1 additional replica(s) M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:10923-16383 (5461 slots) master 1 additional replica(s) Destination node: M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) Resharding plan:
查看集群信息: [[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 ( 4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 ( 4096 slots) master 0 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 ( 4096 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 ( 4096 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
添加从节点(slave 的主机) 对添加为从节点的主机做如下配置 – 装包 修改配置文件 启动 redis 服务 • 添加从节点 # ./redis-trib.rb add-node --slave --master-id id 值 从节点 ip: 端口 192.168.4.51:6351
[[email protected] ~]# ss -ntulp | grep redis tcp LISTEN 0 128 192.168.4.58:6358 *:* users:(("redis-server",pid=5313,fd=6)) tcp LISTEN 0 128 192.168.4.58:16358 *:* users:(("redis-server",pid=5313,fd=8))
[[email protected] ~]# redis-cli -h 192.168.4.58 -p 6358 192.168.4.58:6358> cluster nodes af602cf973932cd3cb8d3b9cb3d3fa557a3b10cc :[email protected] myself,master - 0 0 0 connected 192.168.4.58:6358> cluster info cluster_state:fail cluster_slots_assigned:0 cluster_slots_ok:0 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:1 cluster_size:0 cluster_current_epoch:0 cluster_my_epoch:0 cluster_stats_messages_sent:0 cluster_stats_messages_received:0
[[email protected] src]# ./redis-trib.rb add-node --slave 192.168.4.58:6358 192.168.4.51:6351 >>> Adding node 192.168.4.58:6358 to cluster 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 0 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. Automatically selected master 192.168.4.57:6357 >>> Send CLUSTER MEET to node 192.168.4.58:6358 to make it join the cluster. Waiting for the cluster to join. >>> Configure node as replica of 192.168.4.57:6357. [OK] New node added correctly.
192.168.4.58:6358> cluster info cluster_state:ok cluster_slots_assigned:16384 cluster_slots_ok:16384 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:8 cluster_size:4 cluster_current_epoch:9 cluster_my_epoch:9 cluster_stats_messages_ping_sent:86 cluster_stats_messages_pong_sent:86 cluster_stats_messages_meet_sent:6 cluster_stats_messages_sent:178 cluster_stats_messages_ping_received:84 cluster_stats_messages_pong_received:92 cluster_stats_messages_meet_received:2 cluster_stats_messages_received:178
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 1 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: af602cf973932cd3cb8d3b9cb3d3fa557a3b10cc 192.168.4.58:6358 slots: (0 slots) slave replicates 19b1545610997954ec6370bafac834a54efc02d7 S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
客户端访问:新的主机 [[email protected] ~]# redis-cli -c -h 192.168.4.57 -p 6357 192.168.4.57:6357> keys * 1) "name" 2) "nme" 3) "age" 192.168.4.57:6357> set x 999 -> Redirected to slot [16287] located at 192.168.4.54:6354 OK
给slave主机是指定master给50主机配置,redis服务,开启集群功能: [[email protected] ~]# yum -y install gcc gcc-c++ [[email protected] ~]# ss -ntulp | grep redis tcp LISTEN 0 128 192.168.4.50:6350 *:* users:(("redis-server",pid=7350,fd=6)) tcp LISTEN 0 128 192.168.4.50:16350 *:* users:(("redis-server",pid=7350,fd=8))
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 1 additional replica(s) S: 29023faf64c53fedbe7d8861ec548d3b12c9e821 192.168.4.53:6353 slots: (0 slots) slave replicates cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: af602cf973932cd3cb8d3b9cb3d3fa557a3b10cc 192.168.4.58:6358 slots: (0 slots) slave replicates 19b1545610997954ec6370bafac834a54efc02d7 S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
删除slave主机53• 从节点主机没有槽位范围,直接执行移除命令即可 – redis-trib.rb del-node 192.168.4.51:6351 被移除 主机的 ID
]#redis-trib.rb del-node 192.168.4.51:6351 9c507832f99b9af535 63646a06c5b0525e8fcb4a
[[email protected] src]# ./redis-trib.rb del-node 192.168.4.51:6351 29023faf64c53fedbe7d8861ec548d3b12c9e821 >>> Removing node 29023faf64c53fedbe7d8861ec548d3b12c9e821 from cluster 192.168.4.51:6351 >>> Sending CLUSTER FORGET messages to the cluster... >>> SHUTDOWN the node.
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 1 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: af602cf973932cd3cb8d3b9cb3d3fa557a3b10cc 192.168.4.58:6358 slots: (0 slots) slave replicates 19b1545610997954ec6370bafac834a54efc02d7 S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
删除master主机 57 [[email protected] src]# ./redis-trib.rb del-node 192.168.4.51:6351 19b1545610997954ec6370bafac834a54efc02d7 >>> Removing node 19b1545610997954ec6370bafac834a54efc02d7 from cluster 192.168.4.51:6351 [ERR] Node 192.168.4.57:6357 is not empty! Reshard data away and try again. 因为hasha槽还在占用 1.释放hasha槽
[[email protected] src]# ./redis-trib.rb reshard 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 0 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. How many slots do you want to move (from 1 to 16384)? 4096 What is the receiving node ID? c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 //给的主机 Please enter all the source node IDs. Type 'all' to use all the nodes as source nodes for the hash slots. Type 'done' once you entered all the source nodes IDs. Source node #1:19b1545610997954ec6370bafac834a54efc02d7 //拿出来的主机 Source node #2:done
Ready to move 4096 slots. Source nodes: M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots:0-1364,5461-6826,10923-12287 (4096 slots) master 0 additional replica(s) Destination node: M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:6827-10922 (4096 slots) master 1 additional replica(s)
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:0-1364,5461-12287 (8192 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
删除主机: [[email protected] src]# ./redis-trib.rb del-node 192.168.4.51:6351 19b1545610997954ec6370bafac834a54efc02d7 >>> Removing node 19b1545610997954ec6370bafac834a54efc02d7 from cluster 192.168.4.51:6351 >>> Sending CLUSTER FORGET messages to the cluster... >>> SHUTDOWN the node.
再次查看集群信息: [[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351>>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:0-1364,5461-12287 (8192 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
把修复好的master主机添回到集群中: 踢出集群的主机,自动关闭redis服务,需要把redis的服务从新开启,并查看集群信息和节点信息
[[email protected] ~]# ss -ntulp | grep redis [[email protected] ~]# /etc/init.d/redis_6379 start Starting Redis server... [[email protected] ~]# ss -ntulp | grep redis tcp LISTEN 0 128 192.168.4.57:6357 *:* users:(("redis-server",pid=9441,fd=6)) tcp LISTEN 0 128 192.168.4.57:16357 *:* users:(("redis-server",pid=9441,fd=8)) [[email protected] ~]# redis-cli -h 192.168.4.57 -p 6357 192.168.4.57:6357> cluster info cluster_state:ok cluster_slots_assigned:16384 cluster_slots_ok:16384 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:6 cluster_size:3 cluster_current_epoch:10 cluster_my_epoch:9 cluster_stats_messages_ping_sent:89 cluster_stats_messages_sent:89 cluster_stats_messages_pong_received:89 cluster_stats_messages_received:89 192.168.4.57:6357> 192.168.4.57:6357> cluster nodes cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:[email protected] master - 0 1532939768184 8 connected 12288-16383 c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:635[email protected] master - 0 1532939766000 10 connected 0-1364 5461-12287 bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:[email protected] slave 07df1de074025884c615cc2b0e1331742ca77419 0 1532939767000 1 connected 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:[email protected] master - 0 1532939768000 1 connected 1365-5460 a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:[email protected] slave c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 0 1532939767179 10 connected 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:[email protected] myself,master - 0 1532939459251 9 connected
[[email protected] ~]# ss -ntulp | grep redis [[email protected] ~]# /etc/init.d/redis_6379 start Starting Redis server... [[email protected] ~]# ss -ntulp | grep redis tcp LISTEN 0 128 192.168.4.58:6358 *:* users:(("redis-server",pid=9175,fd=6)) tcp LISTEN 0 128 192.168.4.58:16358 *:* users:(("redis-server",pid=9175,fd=8)) [[email protected] ~]# redis-cli -h 192.168.4.58 -p 6358 192.168.4.58:6358> cluster info cluster_state:ok cluster_slots_assigned:16384 cluster_slots_ok:16384 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:7 cluster_size:3 cluster_current_epoch:10 cluster_my_epoch:10 cluster_stats_messages_ping_sent:60 cluster_stats_messages_sent:60 cluster_stats_messages_pong_received:60 cluster_stats_messages_received:60 192.168.4.58:6358> 192.168.4.58:6358> cluster nodes //查看节点信息 af602cf973932cd3cb8d3b9cb3d3fa557a3b10cc 192.168.4.58:[email protected] myself,slave c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 0 1532939659026 0 connected c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:635[email protected] master - 0 1532939740723 10 connected 0-1364 5461-12287 bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:[email protected] slave 07df1de074025884c615cc2b0e1331742ca77419 0 1532939739218 1 connected 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:[email protected] master - 0 1532939739218 9 connected 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:[email protected] master - 0 1532939740000 1 connected 1365-5460 a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:[email protected] slave c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 0 1532939740000 10 connected cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:[email protected] master - 0 1532939740222 8 connected 12288-16383
3.1 把修复的master的redis 服务器再次添加到集群中
[[email protected] src]# ./redis-trib.rb add-node 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.51:6351 >>> Adding node 19b1545610997954ec6370bafac834a54efc02d7 to cluster 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:0-1364,5461-12287 (8192 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. Invalid IP or Port (given as 19b1545610997954ec6370bafac834a54efc02d7) - use IP:Port format ##报错信息,无效的ip和端口
192.168.4.57:6357> cluster reset OK 192.168.4.57:6357> cluster info cluster_state:fail cluster_slots_assigned:0 cluster_slots_ok:0 cluster_slots_pfail:0 cluster_slots_fail:0 cluster_known_nodes:1 cluster_size:0 cluster_current_epoch:10 cluster_my_epoch:9 cluster_stats_messages_ping_sent:1430 cluster_stats_messages_pong_sent:230 cluster_stats_messages_sent:1660 cluster_stats_messages_ping_received:230 cluster_stats_messages_pong_received:1430 cluster_stats_messages_received:1660 192.168.4.57:6357> cluster nodes 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:[email protected] myself,master - 0 1532939459251 9 connected 192.168.4.57:6357> keys * (empty list or set)
把修复好的主机,添回集群 [[email protected] src]# ./redis-trib.rb add-node 192.168.4.57:6357 192.168.4.51:6351 >>> Adding node 192.168.4.57:6357 to cluster 192.168.4.51:6351 >>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:0-1364,5461-12287 (8192 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Send CLUSTER MEET to node 192.168.4.57:6357 to make it join the cluster. [OK] New node added correctly.
[[email protected] src]# ./redis-trib.rb check 192.168.4.51:6351>>> Performing Cluster Check (using node 192.168.4.51:6351) M: 07df1de074025884c615cc2b0e1331742ca77419 192.168.4.51:6351 slots:1365-5460 (4096 slots) master 1 additional replica(s) M: 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.57:6357 slots: (0 slots) master 0 additional replica(s) S: bdee4e018b155fb55d25be5956bcef0de69c73d1 192.168.4.55:6355 slots: (0 slots) slave replicates 07df1de074025884c615cc2b0e1331742ca77419 M: c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 192.168.4.52:6352 slots:0-1364,5461-12287 (8192 slots) master 1 additional replica(s) S: a9cc8b066e53b38391172a200b48f96b1cde40fc 192.168.4.56:6356 slots: (0 slots) slave replicates c4ff83ca9d9b2d91e74806a0f6b9fc2060ccd4f4 M: cd3542ec299850a4a8f2c8cf42874ac06d3f19b6 192.168.4.54:6354 slots:12288-16383 (4096 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
重新分配hasha槽 [[email protected] src]# ./redis-trib.rb reshard 192.168.4.51:6351
把修复好的slave从库从新添加到集群中 [[email protected] ~]# /etc/init.d/redis_6379 start Starting Redis server... [[email protected] ~]# redis-cli -h 192.168.4.58 -p 6358 192.168.4.58:6358> cluster reset OK
[[email protected] src]# ./redis-trib.rb add-node --slave --master-id 19b1545610997954ec6370bafac834a54efc02d7 192.168.4.58:6358 192.168.4.51:6351
查看主机信息: 192.168.4.58:6358> INFO replication # Replication role:slave master_host:192.168.4.57 master_port:6357 master_link_status:up master_last_io_seconds_ago:3 master_sync_in_progress:0 slave_repl_offset:1428 slave_priority:100 slave_read_only:1 connected_slaves:0 master_replid:068ad72ce1a3c819371e47d565bb438d83d99f19 master_replid2:0000000000000000000000000000000000000000 master_repl_offset:1428 second_repl_offset:-1 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:1 repl_backlog_histlen:1428
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