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一，单机模式
1，下载安装包
wget http://download.redis.io/releases/redis-4.0.2.tar.gz
2，解压安装包并安装
tar -zxvf redis-4.0.2.tar.gz
cd redis-4.0.2
make
报错：jemalloc/jemalloc.h:没有那个文件或目录，执行make MALLOC=libc
cd /usr/local/redis-4.0.2/src
make install
3，建立两个文件夹用于存放redis配置和命令文件
mkdir -p /usr/local/redis/etc
mkdir -p /usr/local/redis/bin
4,将redis配置和命令文件放入到新建的文件夹下
cd /usr/local/redis-4.0.2
cp redis.conf /usr/local/redis/etc
cd /usr/local/redis-4.0.2/src
mv mkreleasehdr.sh redis-benchmark redis-check-aof redis-check-rdb redis-cli redis-server /usr/local/redis/bin
5，启动时并指定配置文件
前台启动：/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
6，验证启动是否成功：
ps -ef |grep 6379
netstat -tunpl| grep redis
7，修改后台启动
vim /usr/local/redis/etc/redis.conf
daemonize yes 使Redis以守护进程模式运行
8，停止Redis
/usr/local/redis/bin/redis-cli SHUTDOWN
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二，主从复制模式（读写分离：主可写，从只读）
规划：101主节点，102,103从节点
三，哨兵模式
规划：将102作为哨兵的部署服务器以下操作是在102服务器上操作
（1）copy文件 sentinel.conf到/usr/local/redis/etc/中
cd /usr/local/redis-4.0.2
cp sentinel.conf /usr/local/redis/etc
（2）修改 sentinel.con文件：
vim /usr/local/redis/etc/sentinel.conf
sentinel monitor mymaster 192.168.1.101 6379 1
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 900000
sentinel parallel-syncs mymaster 2
（3）启动 sentinel哨兵
/usr/local/redis/bin/redis-server /usr/local/redis/etc/sentinel.conf --sentinel &
（4）查看哨兵相关信息命令
/usr/local/redis/bin/redis-cli -h 192.168.0.102 -p 26379 info Sentinel
这里报错：
(error) DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified,
no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface.
If you want to connect from external computers to Redis you may adopt one of the following solutions:
1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent.
2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server.
3) If you started the server manually just for testing, restart it with the '--protected-mode no' option.
4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.
修改sentinel.conf文件
vim /usr/local/redis/etc/sentinel.conf
#bind 127.0.0.1
protected-mode no
对应的101,102,103的redis.conf配置文件也要这样配置
reboot重启服务再次执行
/usr/local/redis/bin/redis-cli -h 192.168.0.102 -p 26379 info Sentinel
（5）关闭主服务器查看集群信息：
/usr/local/redis/bin/redis-cli -h 192.168.0.101 -p 6379 shutdown
master节点转移成功（其实质修改了对应redis.conf配置文件的参数slaveof）
