centos7的redis加哨兵系统

三台服务器

1、下载

wget http://download.redis.io/releases/redis-5.0.3.tar.gz
tar -zxvf redis-5.0.3.tar.gz
cd redis-5.0.3
make
make test //检查一下看有没有问题
make install

2、安装

会在src目录下生成几个可执行文件，分别是mkreleasehdr.sh redis-benchmark redis-check-aof redis-check-dump redis-cli redis-sentinel redis-server。其中redis-server是启动Redis服务的，redis-cli是进入Redis客户端的。

mkdir etc
mkdir bin
mv redis.conf etc/
mv sentinel.conf etc/
cd src
mv mkreleasehdr.sh redis-benchmark redis-check-aof redis-check-rdb redis-sentinel redis-server redis-trib.rb redis-cli ../bin
cd ../
mkdir /usr/local/redis/
cp -R ./bin /usr/local/redis/
cp -R ./etc /usr/local/redis/

mkdir /usr/local/redis/sentinel
mkdir /usr/local/redis/sentinel/log

主配置文件：
# cat /usr/local/redis/etc/redis.conf
port 7001
pidfile /usr/local/redis/redis_7001.pid
# slaveof 10.10.21.197 7001
logfile "/usr/local/redis/redis_7001.log"
# requirepass 123456
daemonize yes
bind 0.0.0.0
# masterauth 123456

从配置文件：
# cat /usr/local/redis/etc/redis.conf
port 7001
pidfile /usr/local/redis/redis_7001.pid
# slaveof 10.10.21.197 7001
logfile "/usr/local/redis/redis_7001.log"
# requirepass 123456
daemonize yes
bind 0.0.0.0
# masterauth 123456

从配置文件:
# cat /usr/local/redis/etc/redis.conf
port 7001
pidfile /usr/local/redis/redis_7001.pid
slaveof 10.10.21.197 7001
logfile "/usr/local/redis/redis_7001.log"
# requirepass 123456
daemonize yes
bind 0.0.0.0
# masterauth 123456

sentinel（哨兵配置文件，三台）
# cat /usr/local/redis/etc/sentinel.conf
port 26379
daemonize yes
protected-mode no
dir "/usr/local/redis/sentinel"
pidfile "/usr/local/redis/sentinel/log/redis-sentinel.pid"
logfile "/usr/local/redis/sentinel/log/redis-sentinel.log"
sentinel monitor redis_master 10.10.21.197 7001 2
sentinel down-after-milliseconds redis_master 9000
sentinel failover-timeout redis_master 9000

启动
# cd /usr/local/redis
# ./bin/redis-server ./etc/redis.conf

检查
# ./bin/redis-cli -p 7001
127.0.0.1:7001> info
# Replication
role:master
connected_slaves:2
slave0:ip=10.10.21.198,port=7001,state=online,offset=7041,lag=1
slave1:ip=10.10.21.199,port=7001,state=online,offset=7184,lag=0
master_replid:9bec683a0d3d92a34346d2e5a7c38e6fc0c5d90d
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:7184
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:7184

哨兵启动
# cd /usr/local/redis
# ./bin/redis-sentinel ./etc/sentinel.conf

检查
# redis-cli -p 26379
127.0.0.1:26379> info
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=redis_master,status=ok,address=10.10.21.197:7001,slaves=2,sentinels=3

haproxy的redis哨兵负载
frontend redis8001
bind *:8001
default_backend redis_8001_backend
backend redis_8001_backend
option tcp-check
tcp-check connect
# tcp-check send AUTH\ admin\r\n
# tcp-check expect string +OK
tcp-check expect string +PONG
tcp-check send INFO\ REPLICATION\r\n
tcp-check expect string role:master
tcp-check send INFO\ REPLICATION\r\n
tcp-check expect rstring connected_slaves:[1-9]
tcp-check send QUIT\r\n
tcp-check expect string +OK
server redis1_7001 10.10.21.197:7001 check inter 1s
server redis2_7001 10.10.21.198:7001 check inter 1s
server redis3_7001 10.10.21.199:7001 check inter 1s