redis主从+sentinel主从自动切换
版本:redis-2.8.19.tar.gz
说明:redis3.x默认不设置密码验证会启动保护模式
架构:2个节点
节点1: 192.168.12.101/24
节点2: 192.168.12.102/24
节点1上部署redis实例,角色master,部署sentinel实例,监控redis-master节点
节点2上部署redis实例,角色slave,部署sentinel实例,监控redis-master节点
+------+ +------+
| [M1] |----//-----| [S1] |
| <S1> | | <S2> |
+------+ +------+
[M1] redis master
[S1] redis slave
<S1> sentinel 1
<S2> sentinel 2
一.配置redis主从
节点1:redis-master配置
1.编译安装redis
tar zxvf redis-2.8.19.tar.gz
cd redis-2.8.19
make
2.更改redis.conf配置文件
daemonize no 改为 yes #后台运行
节点2:redis-slave配置
1.步骤同节点1,不同点:更改redis.conf配置文件
slaveof 192.168.12.101 6379 #当配置sentinel后,slave->master时,这行代码会被注释
启动redis-master
# src/redis-server -p 6380 redis.conf -h 192.168.12.101
启动redis-slave
# src/redis-server -p 6380 redis.conf -h 192.168.12.102
查看redis运行信息,端口
# src/redis-cli -h 192.168.12.101 -p 6379 info replication
# src/redis-cli -h 192.168.12.102 -p 6379 info replication
测试主从复制
主redis
# src/redis-cli -p 6380 -h 192.168.12.101
192.168.12.101:6379> set name 123
OK
192.168.12.101:6379> get name
"123"
从redis
# src/redis-cli -p 6380 -h 192.168.12.102
192.168.12.102:6379> get name
"123"
二.配置redis+sentinel主从自从切换
1.配置sentinel.conf配置文件,配置sentinel
2个sentinel实例配置相同mastername master1
[root@localhost redis-2.8.19]# cat sentinel.conf
port 26379
#master1
sentinel monitor master1 192.168.12.101 6379 1
sentinel down-after-milliseconds master1 5000
sentinel failover-timeout master1 15000
sentinel parallel-syncs master1 1
启动redis-master上的sentinel
# src/redis-sentinel sentinel.conf -h 192.168.12.101
启动redis-slave上的sentinel
# src/redis-sentinel sentinel.conf -h 192.168.12.102
--说明:sentinel启动后会对redis.conf和sentinel.conf文件更改
查看sentinel运行信息,端口不可省略
# src/redis-cli -h 192.168.12.101 -p 26379 info sentinel
# src/redis-cli -h 192.168.12.102 -p 26379 info sentinel
验证sentinel切换主从
# src/redis-cli -h 192.168.12.101 shutdown
# src/redis-cli -h 192.168.12.101 -p 26379 info
# src/redis-cli -h 192.168.12.102 -p 26379 info
Jedis客户端测试
使用sentinel做HA，Jedis版本必须2.2.2及以上，所有访问Redis实例的连接都必须从连接池中获取
===================== redis密码验证配置 ==================================
1.命令启动,临时,不需要重启服务
redis-master
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> CONFIG set requirepass mypass
OK
127.0.0.1:6379> auth mypass
OK
redis-slave
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> CONFIG set masterauth mypass
OK
127.0.0.1:6379> auth mypass
OK
CONFIG SET masterauth mypass
sentinel密码验证配置
cat sentinel.conf
sentinel auth-pass master1 mypass
2.更改配置文件,永久,重启服务
redis-master
cat redis.conf
requirepass "123456"
masterauth "123456"
redis-slave
cat redis.conf
requirepass "123456"
masterauth "123456"
sentinel密码验证配置
cat sentinel.conf
sentinel auth-pass master1 mypass
======================= redis其他操作 ================================
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> FLUSHALL
OK
127.0.0.1:6379> keys *
(empty list or set)
127.0.0.1:6379> save
OK
版本:redis-2.8.19.tar.gz
说明:redis3.x默认不设置密码验证会启动保护模式
架构:2个节点
节点1: 192.168.12.101/24
节点2: 192.168.12.102/24
节点1上部署redis实例,角色master,部署sentinel实例,监控redis-master节点
节点2上部署redis实例,角色slave,部署sentinel实例,监控redis-master节点
+------+ +------+
| [M1] |----//-----| [S1] |
| <S1> | | <S2> |
+------+ +------+
[M1] redis master
[S1] redis slave
<S1> sentinel 1
<S2> sentinel 2
一.配置redis主从
节点1:redis-master配置
1.编译安装redis
tar zxvf redis-2.8.19.tar.gz
cd redis-2.8.19
make
2.更改redis.conf配置文件
daemonize no 改为 yes #后台运行
节点2:redis-slave配置
1.步骤同节点1,不同点:更改redis.conf配置文件
slaveof 192.168.12.101 6379 #当配置sentinel后,slave->master时,这行代码会被注释
启动redis-master
# src/redis-server -p 6380 redis.conf -h 192.168.12.101
启动redis-slave
# src/redis-server -p 6380 redis.conf -h 192.168.12.102
查看redis运行信息,端口
# src/redis-cli -h 192.168.12.101 -p 6379 info replication
# src/redis-cli -h 192.168.12.102 -p 6379 info replication
测试主从复制
主redis
# src/redis-cli -p 6380 -h 192.168.12.101
192.168.12.101:6379> set name 123
OK
192.168.12.101:6379> get name
"123"
从redis
# src/redis-cli -p 6380 -h 192.168.12.102
192.168.12.102:6379> get name
"123"
二.配置redis+sentinel主从自从切换
1.配置sentinel.conf配置文件,配置sentinel
2个sentinel实例配置相同mastername master1
[root@localhost redis-2.8.19]# cat sentinel.conf
port 26379
#master1
sentinel monitor master1 192.168.12.101 6379 1
sentinel down-after-milliseconds master1 5000
sentinel failover-timeout master1 15000
sentinel parallel-syncs master1 1
启动redis-master上的sentinel
# src/redis-sentinel sentinel.conf -h 192.168.12.101
启动redis-slave上的sentinel
# src/redis-sentinel sentinel.conf -h 192.168.12.102
--说明:sentinel启动后会对redis.conf和sentinel.conf文件更改
查看sentinel运行信息,端口不可省略
# src/redis-cli -h 192.168.12.101 -p 26379 info sentinel
# src/redis-cli -h 192.168.12.102 -p 26379 info sentinel
验证sentinel切换主从
# src/redis-cli -h 192.168.12.101 shutdown
# src/redis-cli -h 192.168.12.101 -p 26379 info
# src/redis-cli -h 192.168.12.102 -p 26379 info
Jedis客户端测试
使用sentinel做HA，Jedis版本必须2.2.2及以上，所有访问Redis实例的连接都必须从连接池中获取
===================== redis密码验证配置 ==================================
1.命令启动,临时,不需要重启服务
redis-master
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> CONFIG set requirepass mypass
OK
127.0.0.1:6379> auth mypass
OK
redis-slave
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> CONFIG set masterauth mypass
OK
127.0.0.1:6379> auth mypass
OK
CONFIG SET masterauth mypass
sentinel密码验证配置
cat sentinel.conf
sentinel auth-pass master1 mypass
2.更改配置文件,永久,重启服务
redis-master
cat redis.conf
requirepass "123456"
masterauth "123456"
redis-slave
cat redis.conf
requirepass "123456"
masterauth "123456"
sentinel密码验证配置
cat sentinel.conf
sentinel auth-pass master1 mypass
======================= redis其他操作 ================================
# src/redis-cli -p 6380 -h 127.0.0.1
127.0.0.1:6379> FLUSHALL
OK
127.0.0.1:6379> keys *
(empty list or set)
127.0.0.1:6379> save
OK