CentOS7单节点部署redis-cluster

准备一台机器，系统版本为CentOS7。（注意本文描述的是redis-cluster，不是主从复制）

1、下载软件包

# wget http://download.redis.io/releases/redis-3.2.8.tar.gz

2、解压

# tar xvf redis-3.2.8.tar.gz -C /usr/local/
# cd /usr/local/
# ln -sv redis-3.2.8/ redis

3、编译

# yum groupinstall -y "Development Tools"
# cd redis
# make

4、为多实例redis配置启动环境

# mkdir -pv /home/redis-cluster/{9000,9001,9002}

# cp src/{redis-server,redis-sentinel} /home/redis-cluster/9000/
# cp src/{redis-server,redis-sentinel} /home/redis-cluster/9001/
# cp src/{redis-server,redis-sentinel} /home/redis-cluster/9002/

# cp redis.conf sentinel.conf /home/redis-cluster/9000/
# cp redis.conf sentinel.conf /home/redis-cluster/9001/
# cp redis.conf sentinel.conf /home/redis-cluster/9002/

5、修改配置文件

# vim /home/redis-cluster/9000/redis.conf
bind 192.168.135.170
port 9000
daemonize yes
appendonly yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000

# \cp /home/redis-cluster/9000/redis.conf /home/redis-cluster/9001/redis.conf
# \cp /home/redis-cluster/9000/redis.conf /home/redis-cluster/9002/redis.conf

# vim /home/redis-cluster/9001/redis.conf
port 9001
# vim /home/redis-cluster/9002/redis.conf
port 9002

6、启动三个redis实例

# cd /home/redis-cluster/9000/
# ./redis-server redis.conf

# cd ../9001/
# ./redis-server redis.conf

# cd ../9002/
# ./redis-server redis.conf

# ps -ef | grep redis
root      15583      1  0 00:32 ?        00:00:00 ./redis-server 192.168.135.170:9000 [cluster]
root      15592      1  0 00:33 ?        00:00:00 ./redis-server 192.168.135.170:9001 [cluster]
root      15597      1  0 00:33 ?        00:00:00 ./redis-server 192.168.135.170:9002 [cluster]

7、安装ruby环境

# yum install -y ruby
# gem install redis

8、启动redis集群

# cp /usr/local/redis/src/redis-trib.rb /bin/
# redis-trib.rb create 192.168.135.170:9000 192.168.135.170:9001 192.168.135.170:9002

9、查看集群状态

# /usr/local/redis/src/redis-cli -c -h 192.168.135.170 -p 9000
9000> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:3
cluster_size:3
cluster_current_epoch:3
cluster_my_epoch:1
cluster_stats_messages_sent:364
cluster_stats_messages_received:364