Redis主从复制-配置

我这里在一台电脑上通过不同端口的方式实现一主多从。

 

1.修改主redis服务器配置

　查看本机ip

[root@localhost etc]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:3c:dd:1c brd ff:ff:ff:ff:ff:ff
    inet 192.168.211.131/24 brd 192.168.211.255 scope global noprefixroute dynamic ens33
       valid_lft 1423sec preferred_lft 1423sec
    inet6 fe80::2290:713d:e49:28fe/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

　IP地址：192.168.211.131

 

　　主服务器配置如下

vim redis.conf

 

　　以守护进程的方式启动redis服务器

# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
daemonize yes

 

　　主服务器的与本机ip绑定

bind 192.168.211.131 127.0.0.1

 

　　设置端口，主服务器默认6379端口

# If port 0 is specified Redis will not listen on a TCP socket.
port 6379

　　

2.从服务器配置。配置简单的主从，从服务器使用的配置与主服务器区别在于端口设置不一样。

　　直接复制主配置

[root@localhost etc]# cp redis.conf slave6380.conf

　　

　　设置从服务器端口为6380

[root@localhost etc]# cp redis.conf slave6380.conf

# If port 0 is specified Redis will not listen on a TCP socket.
port 6380

　　

3.启动主从服务器

[root@localhost etc]# redis-server redis.conf
78247:C 06 Dec 22:32:17.871 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
78247:C 06 Dec 22:32:17.871 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=78247, just started
78247:C 06 Dec 22:32:17.872 # Configuration loaded
[root@localhost etc]# redis-server slave6380.conf 
78383:C 06 Dec 22:32:25.570 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
78383:C 06 Dec 22:32:25.570 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=78383, just started
78383:C 06 Dec 22:32:25.570 # Configuration loaded

 

4.连接主服务器，查看是否配置成功

[root@localhost etc]# redis-cli -h 192.168.211.131 -p 6379 info Replication
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.211.131,port=6380,state=online,offset=2463,lag=0
master_replid:7f4521023b468779fe7560801deadd9279382586
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:2463
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:2463
[root@localhost etc]# 

　　

　slave0:ip=192.168.211.131,port=6380,state=online,offset=2463,lag=0 这里可以看出配置成功

 

5.主服务器创建数据后，登录从服务器查看新增的数据

[root@localhost etc]# redis-cli -h 192.168.211.131 -p 6379
192.168.211.131:6379> set message hello world
(error) ERR syntax error
192.168.211.131:6379> set message hello world [EX seconds] [PX millis
[root@localhost etc]# redis-cli -h 192.168.211.131 -p 6379
192.168.211.131:6379> set name zhangsan
OK
192.168.211.131:6379> 
[root@localhost etc]# redis-cli -h 192.168.211.131 -p 6380
192.168.211.131:6380> get name
"zhangsan"
192.168.211.131:6380> 

　　

简单的主从就配好了。

　　

[root@localhost etc]# ls
dump.rdb  redis.conf  slave6380.conf