Redis6.X高可用之主从复制+读写分离

Redis6.X主从复制+读写分离

• 读写分离，扩展主节点的读能力，分担主节点读压力
• 容灾恢复，一旦主节点宕机，从节点作为主节点的备份可以随时顶上来

 

 

 

环境准备

　　配置

mkdir -p /data/redis/master/data 
mkdir -p /data/redis/slave1/data 
mkdir -p /data/redis/slave2/data
​
#从节点开启只读模式(默认)
replica-read-only yes
#从节点访问主节点的密码，和requirepass一样
masterauth 123456
#哪个主节点进行复制
replicaof 192.168.xx.xx 6379

　　创建主配置文件redis.conf

bind 0.0.0.0
port 6379
daemonize yes
​
requirepass "123456"
​
logfile "/usr/local/redis/log/redis1.log"
dbfilename "test1.rdb"
dir "/usr/local/redis/data"
appendonly yes
appendfilename "appendonly1.aof"
masterauth "123456"

　　创建两个从配置文件redis.conf

bind 0.0.0.0
port 6380
daemonize yes
requirepass "123456"
logfile "/usr/local/redis/log/redis2.log"
dbfilename "test2.rdb"
dir "/usr/local/redis/data"
appendonly yes
appendfilename "appendonly2.aof"
replicaof 192.168.xx.xx 6379
masterauth "123456"

bind 0.0.0.0
port 6381
daemonize yes
requirepass "123456"
logfile "/usr/local/redis/log/redis3.log"
dbfilename "test3.rdb"
dir "/usr/local/redis/data"
appendonly yes
appendfilename "appendonly3.aof"
replicaof 192.168.xx.xx 6379
masterauth "123456"

　　注意：防火墙记得关闭，或者开放对应的端口

　　运行

#启动主
./redis-server /data/redis/master/data/redis.conf
​
​
#启动从
./redis-server /data/redis/slave1/data/redis.conf
​
#启动从
./redis-server /data/redis/slave2/data/redis.conf