redis-cluster

规划、搭建过程：
6个redis实例，一般会放到3台硬件服务器
注：在企业规划中，一个分片的两个分到不同的物理机，防止硬件主机宕机造成的整个分片数据丢失。
端口号：7000-7005

# 1。 安装集群插件
EPEL源安装ruby支持
yum install ruby rubygems -y

# 2. 配置gem源，并安装驱动
gem sources -l
gem sources -a http://mirrors.aliyun.com/rubygems/
gem sources  --remove https://rubygems.org/
gem sources -l
gem install redis -v 3.3.3

# 3. 集群节点准备
mkdir /data/700{0..5}
cat > /data/7000/redis.conf <<EOF
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
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat >> /data/7001/redis.conf <<EOF
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
EOF

cat >> /data/7002/redis.conf <<EOF
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
EOF

cat >>  /data/7003/redis.conf <<EOF
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
EOF

cat >> /data/7004/redis.conf <<EOF
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
EOF

cat >> /data/7005/redis.conf <<EOF
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
EOF
启动节点：
redis-server /data/7000/redis.conf
redis-server /data/7001/redis.conf
redis-server /data/7002/redis.conf
redis-server /data/7003/redis.conf
redis-server /data/7004/redis.conf
redis-server /data/7005/redis.conf
[root@db01 ~]# ps -ef |grep redis
root       8854      1  0 03:56 ?        00:00:00 redis-server *:7000 [cluster]    
root       8858      1  0 03:56 ?        00:00:00 redis-server *:7001 [cluster]    
root       8860      1  0 03:56 ?        00:00:00 redis-server *:7002 [cluster]    
root       8864      1  0 03:56 ?        00:00:00 redis-server *:7003 [cluster]    
root       8866      1  0 03:56 ?        00:00:00 redis-server *:7004 [cluster]    
root       8874      1  0 03:56 ?        00:00:00 redis-server *:7005 [cluster] 

# 4. 将节点加入集群管理
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

# 5.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