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本文作者：墨篱弦

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一、做基础配置

a) 首先创建3个空文件

mkdir -p /server/redis_cluster/7001/datamkdir -p /server/redis_cluster/7002/datamkdir -p /server/redis_cluster/7003/data

b) 把redis.conf拷贝到/server/redis_cluster/7001

cp /server/redis-5.0.8/redis.conf /server/redis_cluster/7001

c) 修改redis.conf(不同节点配置文件端口好不同)

#设置端口号port 7001#数据存放位置，必须要指定dir /server/redis_cluster/7001/data#启动集群模式cluster-enabled yes#集群节点信息文件cluster-config-file nodes-7001.confcluster-node-timeout 5000#去掉bind绑定访问ip信息bind 192.168.40.10#关闭保护模式protected-mode no#开启AOF模式,默认的持久化上RDBappendonly yes

d) 实例

port  7001#端口7001,7002,7003bind 本机ip#默认ip为192.168.40.10需要改为其他节点机器可访问的ip 否则创建集群时无法访问对应的端口，无法创建集群daemonize    yes#redis后台运行pidfile  /var/run/redis_7001.pid#pidfile文件对应7001,7002,7003cluster-enabled  yes#开启集群  把注释#去掉cluster-config-file  nodes_7000.conf#集群的配置  配置文件首次启动自动生成 7001,7002,7003cluster-node-timeout  15000#请求超时  默认15秒，可自行设置appendonly  yes#aof日志开启  有需要就开启，它会每次写操作都记录一条日志

e) 替换redis.conf里的端口号

vim /server/redis_cluster/7002/redis.conf:%s/7001/7002/gvim /server/redis_cluster/7003/redis.conf:%s/7001/7003/g

二、 首先创建3个空文件

mkdir -p /server/redis_cluster/7004/datamkdir -p /server/redis_cluster/7005/datamkdir -p /server/redis_cluster/7006/data

三、 把redis.conf拷贝到/server/redis_cluster/7004

cp /server/redis-5.0.8/redis.conf /server/redis_cluster/7004

a) 编辑7004/redis.conf

#//设置端口号port 7004 #数据存放位置，必须要指定dir /server/redis_cluster/7004/data#启动集群模式cluster-enabled yes#集群节点信息文件cluster-config-file nodes-7004.confcluster-node-timeout 5000#去掉bind绑定访问ip信息bind 192.168.40.11#关闭保护模式protected-mode no#开启AOF模式,默认的持久化上RDBappendonly yes

b) 拷贝7004节点的conf文件到其他节点并批量替换节点端口号

vim /server/redis_cluster/7005/redis.conf:%s/7004/7005/gvim /server/redis_cluster/7006/redis.conf:%s/7004/7006/g

四、 启动redis服务

redis-server /server/redis_cluster/7001/redis.confredis-server /server/redis_cluster/7002/redis.confredis-server /server/redis_cluster/7003/redis.conf`redis-server /server/redis_cluster/7004/redis.confredis-server /server/redis_cluster/7005/redis.confredis-server /server/redis_cluster/7006/redis.conf

五、 查看是否有进程

ps -ef | grep redis

六、 创建集群

a) 命令格式

redis-cli -a *** --cluster create  127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006 --cluster-replicas 1

-a *** 密码 如果redis.conf中配置了密码创建集群时需要添加--cluster-replicas 1 从节点个数

b) 使用create-cluster搭建

只创建主节点(不包含slave节点)

redis-cli --cluster create 192.168.40.10:7001 192.168.40.10:7002 192.168.40.10:7003 --cluster-replicas 0

c) 查看192.168.40.10：7001节点ID

redis-cli --cluster check 192.168.40.10:7001

192.168.40.10:7001 (603f34b6...) -> 0 keys | 5461 slots | 0 slaves.192.168.40.10:7003 (c28c02bc...) -> 0 keys | 5461 slots | 0 slaves.192.168.40.10:7002 (9103ce33...) -> 0 keys | 5462 slots | 0 slaves.[OK] 0 keys in 3 masters.0.00 keys per slot on average.>>> Performing Cluster Check (using node 192.168.40.10:7001)M:  603f34b6f1bfa681f1e339bda355f225125488b4 192.168.40.10:7001slots:[0-5460] (5461 slots) masterM: c28c02bca8611298a01717b0591cadec04c77aad 192.168.40.10:7003slots:[10923-16383] (5461 slots) masterM: 9103ce333b822ac9e0cac4f1d499e72e149197d3 192.168.40.10:7002slots:[5461-10922] (5462 slots) master[OK] All nodes agree about slots configuration.>>> Check for open slots...>>> Check slots coverage...[OK] All 16384 slots covered.

d) 手动添加从节点

redis-cli --cluster add-node 192.168.40.11:7004 192.168.40.10:7001 --cluster-slave --cluster-master-id 603f34b6f1bfa681f1e339bda355f225125488b4

redis-cli --cluster add-node 192.168.40.11:7005 192.168.40.10:7002 --cluster-slave --cluster-master-id 9103ce333b822ac9e0cac4f1d499e72e149197d3

redis-cli --cluster add-node 192.168.40.11:7006 192.168.40.10:7003 --cluster-slave --cluster-master-id c28c02bca8611298a01717b0591cadec04c77aad

七、 验证集群

a) 登录集群节点

./redis-cli -h 192.168.40.10 -p 7001

b) 查看集群状态

192.168.40.10:7001> cluster info

cluster_state:okcluster_slots_assigned:16384cluster_slots_ok:16384cluster_slots_pfail:0cluster_slots_fail:0cluster_known_nodes:6cluster_size:3cluster_current_epoch:3cluster_my_epoch:1cluster_stats_messages_ping_sent:1478cluster_stats_messages_pong_sent:1382cluster_stats_messages_meet_sent:1cluster_stats_messages_sent:2861cluster_stats_messages_ping_received:1378cluster_stats_messages_pong_received:1479cluster_stats_messages_meet_received:4cluster_stats_messages_received:2861

c) 查看集群主从关系(根据slave后面的id确定当前节点的主节点是哪个)

192.168.40.10:7001> cluster nodes

c28c02bca8611298a01717b0591cadec04c77aad 192.168.40.10:7003[@17003] master - 0 1598951187016 3 connected 10923-163836523aa8a3bf53eae1ef8df25c0f42c820e0af7d6 192.168.40.11:7004@17004 slave 603f34b6f1bfa681f1e339bda355f225125488b4 0 1598951188022 1 connected32883231bf8908549f1720ab99161738865ec009 192.168.40.11:7005@17005 slave 9103ce333b822ac9e0cac4f1d499e72e149197d3 0 1598951186010 2 connectedd679eba5a795cdd1c6b4722bb5fb33cad60e0c18 192.168.40.11:7006@17006 slave c28c02bca8611298a01717b0591cadec04c77aad 0 1598951187000 3 connected603f34b6f1bfa681f1e339bda355f225125488b4 192.168.40.10:7001@17001 myself,master - 0 1598951184000 1 connected 0-54609103ce333b822ac9e0cac4f1d499e72e149197d3 192.168.40.10:7002@17002 master - 0 1598951185002 2 connected 5461-10922

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