fe / LearningDocumentation · Commits

Go to a project

Authored by wanghuanbao
Commit 9569bdd083c988e3abaa6b5df34269a45af612ff 1 parent 1774d8ed

主从服务IP地址修改

Inline Side-by-side
Showing 1 changed file with 186 additions and 186 deletions
Redis 主从高可用配置
-----------------------
## 准备
需要3台主机(Linux)：
如：
```
192.168.102.168(主)
192.168.102.162(从)
192.168.102.78(sentinel 监控)
```
## 第一步：安装Redis
在以上三台安装，[redis3.0.5](http://redis.io/download)，安装步骤如下：
```
$ wget http://download.redis.io/releases/redis-3.0.5.tar.gz
$ tar xzf redis-3.0.5.tar.gz
$ cd redis-3.0.5
$ make
```
测试是否安装成功
```
$ src/redis-server
$ src/redis-cli
redis> set foo bar
OK
redis> get foo
"bar
```
一切OK，就可以进行下一步
## 第二步：配置参数
* `192.168.102.168`(主)的`redis.conf`,配置如下：
```
#主要是该主机已启动一个redis实例，占用了6379端口
port 6377
```
* `192.168.102.168`(从)的`redis.conf`，配置如下：
```
#配置使端口一致
port 6377
#配置如下
slaveof 192.168.102.168 6377
```
* `192.168.102.78`(监控)的`sentinel.conf`,配置如下：
```
##redis-0
##sentinel实例之间的通讯端口
port 26379
#mymaster
sentinel monitor mymaster 192.168.102.168 6377 1
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 900000
sentinel parallel-syncs mymaster 2
```
## 第三步：启动服务
在主和从分别执行：`nohup ./src/redis-server ./redis.conf &`。
在监控的主机上执行：`nohup ./src/redis-sentinel ./sentinel.conf --sentinel &`。
查看是否已生效
主的信息
```
redis-cli -h 192.168.102.168 -p 6377 info Replication
```
输出
```
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.102.162,port=6377,state=online,offset=3256260,lag=1
master_repl_offset:3256260
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2207685
repl_backlog_histlen:1048576
```
从的信息
```
redis-cli -h 192.168.102.162 -p 6377 info Replication
```
输出
```
# Replication
role:slave
master_host:192.168.102.168
master_port:6377
master_link_status:up
master_last_io_seconds_ago:0
master_sync_in_progress:0
slave_repl_offset:3355550
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
```
查看监控
```
redis-cli -h 192.168.102.78 -p 26379 info Sentinel
```
输出
```
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
master0:name=mymaster,status=ok,address=192.168.102.168:6377,slaves=1,sentinels=1
```
表示主从配置成功！
## 第四步：故障演练，关闭主redis主机
```
redis-cli -h 192.168.102.168 -p 6377 shutdown #表示把192.168.102.168 这台redis 关闭
```
这时可以看到
162这台从变成了主，当再次重启168，168变成从。
## 第五步：jedis调用实例
maven配置
```xml
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.7.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
```
```java
Set<String> sentinels = new HashSet<String>(16);
sentinels.add("192.168.102.168:6377");
sentinels.add("192.168.102.162:6377");
GenericObjectPoolConfig config = new GenericObjectPoolConfig();
config.setMaxTotal(32);
JedisSentinelPool jedisSentinelPool = new JedisSentinelPool("def_master",sentinels,config,"012_345^678-90");
Jedis jedis = jedisSentinelPool.getResource();
try{
jedis.set("key","value");
} finally {
jedisSentinelPool.returnResource(jedis);
}
jedisSentinelPool.close();
```
参考文档：
* [Redis Sentinel机制与用法（一）](http://segmentfault.com/a/1190000002680804)
* [Redis Sentinel机制与用法（二）](http://segmentfault.com/a/1190000002685515)
* [redis sentinel 主从切换(failover)解决方案，详细配置](http://blog.csdn.net/pi9nc/article/details/17735653)
Redis 主从高可用配置
-----------------------
## 准备
需要3台主机(Linux)：
如：
```
192.168.102.162(主)
192.168.102.168(从)
192.168.102.78(sentinel 监控)
```
## 第一步：安装Redis
在以上三台安装，[redis3.0.5](http://redis.io/download)，安装步骤如下：
```
$ wget http://download.redis.io/releases/redis-3.0.5.tar.gz
$ tar xzf redis-3.0.5.tar.gz
$ cd redis-3.0.5
$ make
```
测试是否安装成功
```
$ src/redis-server
$ src/redis-cli
redis> set foo bar
OK
redis> get foo
"bar
```
一切OK，就可以进行下一步
## 第二步：配置参数
* `192.168.102.162`(主)的`redis.conf`,配置如下：
```
#主要是该主机已启动一个redis实例，占用了6379端口
port 6377
```
* `192.168.102.168`(从)的`redis.conf`，配置如下：
```
#配置使端口一致
port 6377
#配置如下
slaveof 192.168.102.162 6377
```
* `192.168.102.78`(监控)的`sentinel.conf`,配置如下：
```
##redis-0
##sentinel实例之间的通讯端口
port 26379
#mymaster
sentinel monitor mymaster 192.168.102.162 6377 1
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 900000
sentinel parallel-syncs mymaster 2
```
## 第三步：启动服务
在主和从分别执行：`nohup ./src/redis-server ./redis.conf &`。
在监控的主机上执行：`nohup ./src/redis-sentinel ./sentinel.conf --sentinel &`。
查看是否已生效
主的信息
```
redis-cli -h 192.168.102.162 -p 6377 info Replication
```
输出
```
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.102.168,port=6377,state=online,offset=3256260,lag=1
master_repl_offset:3256260
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2207685
repl_backlog_histlen:1048576
```
从的信息
```
redis-cli -h 192.168.102.168 -p 6377 info Replication
```
输出
```
# Replication
role:slave
master_host:192.168.102.162
master_port:6377
master_link_status:up
master_last_io_seconds_ago:0
master_sync_in_progress:0
slave_repl_offset:3355550
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
```
查看监控
```
redis-cli -h 192.168.102.78 -p 26379 info Sentinel
```
输出
```
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
master0:name=mymaster,status=ok,address=192.168.102.162:6377,slaves=1,sentinels=1
```
表示主从配置成功！
## 第四步：故障演练，关闭主redis主机
```
redis-cli -h 192.168.102.162 -p 6377 shutdown #表示把192.168.102.162 这台redis 关闭
```
这时可以看到
162这台从变成了主，当再次重启168，168变成从。
## 第五步：jedis调用实例
maven配置
```xml
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.7.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
```
```java
Set<String> sentinels = new HashSet<String>(16);
sentinels.add("192.168.102.162:6377");
sentinels.add("192.168.102.166:6377");
GenericObjectPoolConfig config = new GenericObjectPoolConfig();
config.setMaxTotal(32);
JedisSentinelPool jedisSentinelPool = new JedisSentinelPool("def_master",sentinels,config,"012_345^678-90");
Jedis jedis = jedisSentinelPool.getResource();
try{
jedis.set("key","value");
} finally {
jedisSentinelPool.returnResource(jedis);
}
jedisSentinelPool.close();
```
参考文档：
* [Redis Sentinel机制与用法（一）](http://segmentfault.com/a/1190000002680804)
* [Redis Sentinel机制与用法（二）](http://segmentfault.com/a/1190000002685515)
* [redis sentinel 主从切换(failover)解决方案，详细配置](http://blog.csdn.net/pi9nc/article/details/17735653)
* [Redis Sentinel：集群Failover解决方案](http://shift-alt-ctrl.iteye.com/blog/1884370)
\ No newline at end of file
... ...