Redis搭建一主多从的实现步骤

舒易

目录

• 1.创建redis文件夹，创建三个redis文件
• 2.分别在文件里配置
• 3.启动三台redis服务器
• 4.查看进程，看看三台服务器是否启动
• 1. 6379
• 2. 6380
• 3.6381
• 4.在6380和6381上执行 ： slaveof 127.0.0.1 6379

1.创建redis文件夹，创建三个redis文件

[root@192 redis]# touch redis6379.conf
[root@192 redis]# touch redis6380.conf
[root@192 redis]# touch redis6381.conf

2.分别在文件里配置

include ./redis.conf
pidfile /var/run/redis_6379.pid
port 6379
dbfilename dump6379.rdb

include ./redis.conf
pidfile /var/run/redis_6380.pid
port 6380
dbfilename dump6380.rdb

include ./redis.conf
pidfile /var/run/redis_6381.pid
port 6381
dbfilename dump6381.rdb

3.启动三台redis服务器

redis-server redis6379.conf 
redis-server redis6380.conf 
redis-server redis6381.conf 

4.查看进程，看看三台服务器是否启动

[root@192 redis]# ps -ef|grep redis
zhangsan   3660      1  0 16:13 ?        00:00:02 redis-server 127.0.0.1:6379
root       5153   4831  0 16:46 pts/1    00:00:00 redis-cli -p 6379
root       5629      1  0 17:06 ?        00:00:00 redis-server 127.0.0.1:6380
root       5643      1  0 17:07 ?        00:00:00 redis-server 127.0.0.1:6381
root       5660   3958  0 17:07 pts/0    00:00:00 grep --color=auto redis

info replication

打印主从复制相关信息

1. 6379

127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:0
master_replid:a4cb730c964f637bb2bb44c43b86a69fcefba026
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

2. 6380

127.0.0.1:6380> info replication
# Replication
role:master
connected_slaves:0
master_replid:e28531bc6bf909df026ebf2fdfdca211390c2d2f
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

3.6381

127.0.0.1:6381> info replication
# Replication
role:master
connected_slaves:0
master_replid:32928632beb1666e37a6ccbbb71310f95154b278
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

4.在6380和6381上执行 ： slaveof 127.0.0.1 6379

1. 6379

127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=127.0.0.1,port=6381,state=online,offset=56,lag=1
slave1:ip=127.0.0.1,port=6380,state=online,offset=56,lag=1
master_replid:084f099bcf0dfcf30a81d204fb69bb8f8728c5d8
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:56
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:56

2. 6380

127.0.0.1:6380> slaveof 127.0.0.1 6379
OK
127.0.0.1:6380> info replication
# Replication
role:slave
master_host:127.0.0.1
master_port:6379
master_link_status:down
master_last_io_seconds_ago:-1
master_sync_in_progress:0
slave_repl_offset:1
master_link_down_since_seconds:1690103952
slave_priority:100
slave_read_only:1
connected_slaves:0
master_replid:e28531bc6bf909df026ebf2fdfdca211390c2d2f
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

3. 6381

127.0.0.1:6381> slaveof 127.0.0.1 6379
OK
127.0.0.1:6381> info replication
# Replication
role:slave
master_host:127.0.0.1
master_port:6379
master_link_status:down
master_last_io_seconds_ago:-1
master_sync_in_progress:0
slave_repl_offset:0
master_link_down_since_seconds:1690103984
slave_priority:100
slave_read_only:1
connected_slaves:0
master_replid:32928632beb1666e37a6ccbbb71310f95154b278
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0