ubuntu下搭建redis集群

前言

ubuntu下搭建redis集群步骤

步骤

准备工作

redis的集群管理工具依赖于ruby，先安装 sudo apt-get install ruby 上传redis和ruby的接口配置文件 redis-3.0.0.gem 安装gem gem install ./redis-3.0.0.gem

在/usr/local下创建redis-cluster目录

在redis-cluster下面创建redis01-redis06 共6个子目录。

每一个子目录中拷贝一个redis的bin文件目录

cp -r bin /usr/local/redis-cluster/redis01 修改redis01下面的redis.conf配置 port 7001 cluster-enabled yes 编写脚本批量启动redis实例 #!/bin/bash echo '开始配置redis集群' cd redis01 redis-server ./redis.conf echo "启动redis实例1" cd .. cd redis02 redis-server ./redis.conf echo "启动redis实例2" cd .. cd redis03 redis-server ./redis.conf echo "启动redis实例3" cd .. cd redis04 redis-server ./redis.conf cd .. echo "启动redis实例4" cd redis05 redis-server ./redis.conf cd .. echo "启动redis实例5" cd redis06 redis-server ./redis.conf cd .. echo "启动reddis实例6" 运行脚本 sh startall.sh ps -ef|grep redis 查看redis启动情况 root@ubuntu:/usr/local/redis-cluster# ps -ef|grep redis root 11173 1 0 05:05 ? 00:00:14 redis-server *:6379 root 13769 1 0 07:51 ? 00:00:00 redis-server *:7001 [cluster] root 13773 1 0 07:51 ? 00:00:00 redis-server *:7002 [cluster] root 13775 1 0 07:51 ? 00:00:00 redis-server *:7003 [cluster] root 13777 1 0 07:51 ? 00:00:00 redis-server *:7004 [cluster] root 13783 1 0 07:51 ? 00:00:00 redis-server *:7005 [cluster] root 13785 1 0 07:51 ? 00:00:00 redis-server *:7006 [cluster] root 13810 7920 0 07:52 pts/33 00:00:00 grep --color=auto redis 拷贝redis src下面的redis-trib.rb文件到集群目录 cp *rb /usr/local/redis-cluster 执行部署命令 ip为服务器的ip ./redis-trib.rb create --replicas 1 192.168.21.133:7001 192.168.21.133:7002 192.168.21.133:7003 192.168.21.133:7004 192.168.21.133:7005 192.168.21.133:7006 如果提示错误 将需要新增的节点下aof、rdb等本地备份文件删除； [ERR] Node 192.168.21.133:7002 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

默认分配主从询问后，配置出错解决方式

192.168.21.133:7001 192.168.21.133:7002 192.168.21.133:7003 Adding replica 192.168.21.133:7004 to 192.168.21.133:7001 Adding replica 192.168.21.133:7005 to 192.168.21.133:7002 Adding replica 192.168.21.133:7006 to 192.168.21.133:7003 M: 57cd2fd63d76ea3bb85b49ab34c7a2fa2e92d35c 192.168.21.133:7001 slots:0-5460 (5461 slots) master M: 55c50c08c44ca69b0e9db2d9a1dffcf4b97a8bad 192.168.21.133:7002 slots:5461-10922,15495 (5463 slots) master M: a7f4ee2f7570b0c94e1ebbaf9c9a75208a224654 192.168.21.133:7003 slots:10923-16383 (5461 slots) master S: 9ed6d356b835f7d1239f95eb61b0f90606f5f844 192.168.21.133:7004 replicates 57cd2fd63d76ea3bb85b49ab34c7a2fa2e92d35c S: b8496267269c1c5670ed33ddb855d33a714cd876 192.168.21.133:7005 replicates 55c50c08c44ca69b0e9db2d9a1dffcf4b97a8bad S: cf3b7d828fa6d392d5ebd9c905fcbe074e3b3f8d 192.168.21.133:7006 replicates a7f4ee2f7570b0c94e1ebbaf9c9a75208a224654 Can I set the above configuration? (type 'yes' to accept): 输入yes。没有创建成功 创建集群时报某个err slot 0 is already busy (redis:commanderror) 这是由于之间创建集群没有成功,需要将nodes.conf和dir里面的文件全部删除(注意不要删除了redis.conf) 进入每个集群节点，然后执行如下命令 127.0.0.1:7006> flushall OK 127.0.0.1:7006> cluster reset OK 错误： /var/lib/gems/1.9.1/gems/redis-3.0.0/lib/redis/client.rb:79:in `call': ERR Slot 15495 is already busy (Redis::CommandError)

正确的输出

>> Nodes configuration updated >>> Assign a different config epoch to each node >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join... >>> Performing Cluster Check (using node 192.168.21.133:7001) M: 57cd2fd63d76ea3bb85b49ab34c7a2fa2e92d35c 192.168.21.133:7001 slots:0-5460 (5461 slots) master M: 55c50c08c44ca69b0e9db2d9a1dffcf4b97a8bad 192.168.21.133:7002 slots:5461-10922 (5462 slots) master M: a7f4ee2f7570b0c94e1ebbaf9c9a75208a224654 192.168.21.133:7003 slots:10923-16383 (5461 slots) master M: 9ed6d356b835f7d1239f95eb61b0f90606f5f844 192.168.21.133:7004 slots: (0 slots) master replicates 57cd2fd63d76ea3bb85b49ab34c7a2fa2e92d35c M: b8496267269c1c5670ed33ddb855d33a714cd876 192.168.21.133:7005 slots: (0 slots) master replicates 55c50c08c44ca69b0e9db2d9a1dffcf4b97a8bad M: cf3b7d828fa6d392d5ebd9c905fcbe074e3b3f8d 192.168.21.133:7006 slots: (0 slots) master replicates a7f4ee2f7570b0c94e1ebbaf9c9a75208a224654 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.

测试集群

可以使用任意一个节点 redis-cli -h 192.168.21.133 -p 7001 -c 192.168.21.133:7001> set a 1000 -> Redirected to slot [15495] located at 192.168.21.133:7003 OK 192.168.21.133:7003> set b huangyunquan -> Redirected to slot [3300] located at 192.168.21.133:7001 OK 192.168.21.133:7001> get b "huangyunquan" 192.168.21.133:7001> get a -> Redirected to slot [15495] located at 192.168.21.133:7003 "1000" 192.168.21.133:7003>