One . Master slave replication configuration preparation

1. clone 3 platform linux host

Two . Principle of master-slave replication configuration

1. redis The replication function of is to support data synchronization among multiple databases . One is the main database （master） One is from the database （slave）, The main database can be read and write , Automatically synchronize the data to the slave database when the write operation occurs , And the slave database is generally read-only , And receive the data synchronized from the main database , A master database can have more than one slave database , A slave database can only have one master database .
2. adopt redis The copy function of can well realize the separation of reading and writing of database , Increase the load capacity of the server . The main database is mainly written , And reading from the database .
3. The main database has read and write permission 、 Only read permission from the library

3、 ... and 、 Master slave replication configuration

Change from redis Medium redis.conf file , Slave synchronization master , So just follow

1.slaveof [masterIp] [masterport]          5.0.8 following To configure

      replicaof <masterip> <masterport> 5.0.8 above   To configure

2.slaveof 192.168.33.201 6379            5.0.8 following To configure

       replicaof 172.16.141.201 6379      5.0.8 above   To configure

3.masterauth 123456--- Lord redis The server is configured with a password , You need to configure .

Be sure to remember 2 spot ：

The first 1 spot ： Use root Account ;

The first 2 spot ： Turn off firewall

Four . Verify master-slave replication

Host operation

start-up redis  ：./redis-server ../redis.conf

Sign in redis： ./redis-cli -a -root

  Set up namee The key/value pair ：set namee jianzi

  Slave operation

start-up redis  ：./redis-server ../redis.conf

Sign in redis： ./redis-cli -a -root

obtain namee The key/value pair ：jianzi

Be accomplished ！！！