### 安装集群插件
yum install -y ruby rubygems -y
gem sources -l
gem sources -a http://mirrors.aliyun.com/rubygems/
gem sources --remove http://rubygems.org/
gem install redis -v 3.3.3
gem sources -l
集群节点准备
mkdir /data/700{0..5}
cd /data/7000
vim redis.conf
port 7000
daemonize yes
pidfile "/data/7000/redis.pid"
loglevel notice
logfile "/data/7000/redis.log"
dbfilename "dump.rdb"
dir "/data/7000"
protected-mode no
cluster-enabled yes ### 是否打开集群功能
cluster-config-file nodes.conf ### 集群的存放配置文件
cluster-node-timeout 5000 ### 集群的请求超时时间
appendonly yes ### 开启aof持久化功能
vim /data/7001/redis.conf
port 7001
daemonize yes
pidfile "/data/7001/redis.pid"
loglevel notice
logfile "/data/7001/redis.log"
dbfilename "dump.rdb"
dir "/data/7001"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
vim /data/7002/redis.conf
port 7002
daemonize yes
pidfile "/data/7002/redis.pid"
loglevel notice
logfile "/data/7002/redis.log"
dbfilename "dump.rdb"
dir "/data/7002"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
vim /data/7003/redis.conf
port 7003
daemonize yes
pidfile "/data/7003/redis.pid"
loglevel notice
logfile "/data/7003/redis.log"
dbfilename "dump.rdb"
dir "/data/7003"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
vim /data/7004/redis.conf
port 7004
daemonize yes
pidfile "/data/7004/redis.pid"
loglevel notice
logfile "/data/7004/redis.log"
dbfilename "dump.rdb"
dir "/data/7004"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
vim /data/7005/redis.conf
port 7005
daemonize yes
pidfile "/data/7005/redis.pid"
loglevel notice
logfile "/data/7005/redis.log"
dbfilename "dump.rdb"
dir "/data/7005"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
使用vim的时候可以使用如下方式进行快速替换文本中的文件
:%s/7000/7001/g #### 将文件中的所有7000替换成7001
启动redis所有节点
[root@k8s-master 7005]# redis-server /data/7000/redis.conf
[root@k8s-master 7005]# redis-server /data/7002/redis.conf
[root@k8s-master 7005]# redis-server /data/7001/redis.conf
[root@k8s-master 7005]# redis-server /data/7003/redis.conf
[root@k8s-master 7005]# redis-server /data/7004/redis.conf
[root@k8s-master 7005]# redis-server /data/7005/redis.conf
[root@k8s-master 7005]# ps -ef|grep redis
root 22736 12989 0 14:37 pts/0 00:00:07 redis-server 127.0.0.1:6379
root 23907 1 0 14:49 ? 00:00:07 redis-server *:6382
root 25210 12989 0 15:03 pts/0 00:00:15 redis-sentinel *:26380 [sentinel]
root 26279 1 0 15:14 ? 00:00:06 redis-server *:6380
root 26650 1 0 15:17 ? 00:00:06 redis-server *:6381
root 35106 1 0 16:40 ? 00:00:00 redis-server *:7000 [cluster]
root 35114 1 0 16:41 ? 00:00:00 redis-server *:7002 [cluster]
root 35127 1 0 16:41 ? 00:00:00 redis-server *:7001 [cluster]
root 35139 1 0 16:41 ? 00:00:00 redis-server *:7003 [cluster]
root 35147 1 0 16:41 ? 00:00:00 redis-server *:7004 [cluster]
root 35155 1 0 16:41 ? 00:00:00 redis-server *:7005 [cluster]
redis-trib.rb create --replicas 1 127.0.0.1:7000 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
### create 创建 replicas 副本一个 前3个节点会被认为是主节点 后3个节点会被认为是从节点
集群状态查看
集群主节点状态
redis-cli -p 7000 cluster nodes | grep master
集群从节点状态
redis-cli -p 7000 cluster nodes | grep slave
redis集群节点管理
### 增加新的节点
mkdir /data/7006
mkdir /data/7007
vim /data/7006/redis.conf
port 7006
daemonize yes
pidfile "/data/7006/redis.pid"
loglevel notice
logfile "/data/7006/redis.log"
dbfilename "dump.rdb"
dir "/data/7006"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
vim /data/7007/redis.conf
port 7007
daemonize yes
pidfile "/data/7007/redis.pid"
loglevel notice
logfile "/data/7007/redis.log"
dbfilename "dump.rdb"
dir "/data/7007"
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
### redis7006-7007启动节点
[root@k8s-master 7007]# redis-server /data/7006/redis.conf
[root@k8s-master 7007]# redis-server /data/7007/redis.conf
### 查看节点是否启动成功
[root@k8s-master 7007]# ps -ef |grep redis
root 22736 12989 0 14:37 pts/0 00:00:09 redis-server 127.0.0.1:6379
root 23907 1 0 14:49 ? 00:00:09 redis-server *:6382
root 25210 12989 0 15:03 pts/0 00:00:20 redis-sentinel *:26380 [sentinel]
root 26279 1 0 15:14 ? 00:00:08 redis-server *:6380
root 26650 1 0 15:17 ? 00:00:08 redis-server *:6381
root 35106 1 0 16:40 ? 00:00:02 redis-server *:7000 [cluster]
root 35114 1 0 16:41 ? 00:00:02 redis-server *:7002 [cluster]
root 35127 1 0 16:41 ? 00:00:02 redis-server *:7001 [cluster]
root 35139 1 0 16:41 ? 00:00:02 redis-server *:7003 [cluster]
root 35147 1 0 16:41 ? 00:00:02 redis-server *:7004 [cluster]
root 35155 1 0 16:41 ? 00:00:02 redis-server *:7005 [cluster]
root 38225 1 0 17:13 ? 00:00:00 redis-server *:7006 [cluster] #### 启动成功
root 38237 1 0 17:13 ? 00:00:00 redis-server *:7007 [cluster] #### 启动成功
root 38299 12989 0 17:13 pts/0 00:00:00 grep --color=auto redis
添加主节点
redis-trib.rb add-node 127.0.0.1:7006 127.0.0.1:7000
#### 将7006加入到集群中
转移slot（重新分片）
redis-trib.rb reshard 127.0.0.1:7000
4096
7006的id
all
添加一个从节点
###注意先获取7006的node id
redis-cli -p 7000 cluster nodes | grep master
redis-trib.rb add-node --slave --master-id 5daee30881a4d1b2ee3e31ae7ff04de42c8690e4 127.0.0.1:7007 127.0.0.1:7000
###5daee30881a4d1b2ee3e31ae7ff04de42c8690e4 为7006的主节点上添加从节点 这里的node id写的是7006的id号码 后面的7007代表是从节点
删除节点
### 将需要的删除的节点slot移动走
redis-trib.rb reshard 127.0.0.1:7000
#### 删除一个节点
redis-trib.rb del-node 127.0.0.1:7005
4096 ###移动走的槽位
a60677f89e2c684549fda4f8182a55ccd10514e2 #### 7000的id号码 接受的节点
7006的id号码 ####需要移动走的id 节点
done
yes
[root@k8s-master 7007]# redis-cli -p 7000 cluster nodes | grep master
a60677f89e2c684549fda4f8182a55ccd10514e2 127.0.0.1:7000 myself,master - 0 0 8 connected 0-6826 10923-12287
5daee30881a4d1b2ee3e31ae7ff04de42c8690e4 127.0.0.1:7006 master - 0 1550743463647 7 connected ###槽位为空
92fad7817b2093c0dfa7727cd47e773440dd2ed3 127.0.0.1:7001 master - 0 1550743463140 2 connected 6827-10922
4407a7899197370a3a81e38bef541d5264bfc96a 127.0.0.1:7002 master - 0 1550743464189 3 connected 12288-16383
###删除一个节点
删除一个节点之前先看一下这个节点的node id号码
redis-cli -p 7000 cluster nodes
6c93febac43e385c48159ff43dee82df3857cdc7 127.0.0.1:7005 slave 4407a7899197370a3a81e38bef541d5264bfc96a 0 1550743883143 6 connected
f8cccf3137eb2142618070dede315335b26abd11 127.0.0.1:7004 slave 92fad7817b2093c0dfa7727cd47e773440dd2ed3 0 1550743882129 5 connected
69961281e2e8a31e1c903767dc502e8be03e1cd6 127.0.0.1:7007 slave a60677f89e2c684549fda4f8182a55ccd10514e2 0 1550743882130 8 connected
a60677f89e2c684549fda4f8182a55ccd10514e2 127.0.0.1:7000 myself,master - 0 0 8 connected 0-6826 10923-12287
5daee30881a4d1b2ee3e31ae7ff04de42c8690e4 127.0.0.1:7006 master - 0 1550743882639 7 connected
92fad7817b2093c0dfa7727cd47e773440dd2ed3 127.0.0.1:7001 master - 0 1550743883649 2 connected 6827-10922
4407a7899197370a3a81e38bef541d5264bfc96a 127.0.0.1:7002 master - 0 1550743883144 3 connected 12288-16383
c13a3baca507d933c53c880d304c679ef107ac71 127.0.0.1:7003 slave a60677f89e2c684549fda4f8182a55ccd10514e2 0 1550743884152 8 connected
69961281e2e8a31e1c903767dc502e8be03e1cd6 127.0.0.1:7007
5daee30881a4d1b2ee3e31ae7ff04de42c8690e4 127.0.0.1:7006
redis-trib.rb del-node 127.0.0.1:7007 69961281e2e8a31e1c903767dc502e8be03e1cd6
redis-trib.rb del-node 127.0.0.1:7006 5daee30881a4d1b2ee3e31ae7ff04de42c8690e4