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redis数据库主从复制
redis数据库
一、安装和配置redis
1、安装redis
[root@localhost ~]# wget http://download.redis.io/releases/redis-3.2.8.tar.gz
[root@localhost ~]# tar -zxvf redis-3.2.8.tar.gz -C /usr/local/src/
[root@localhost ~]# ln -sv /usr/local/src/redis-3.2.8/ /usr/local/redis
[root@localhost ~]# cd /usr/local/redis/
[root@localhost redis]# ls
00-RELEASENOTES CONTRIBUTING deps Makefile README.md redis.conf runtest-cluster sentinel.conf tests
BUGS COPYING INSTALL MANIFESTO redis runtest runtest-sentinel src utils
[root@localhost redis]# make
[root@localhost redis]# make install
[root@localhost redis]# cp redis.conf /etc
[root@localhost redis]# vim /etc/redis.conf
bind 0.0.0.0 #设置redis监听的地址
daemonize yes #设置redis以守护进程的方式启动
dir /redisdb #设置redis缓存数据的目录
logfile "/redisdb/redis.log"
appendonly yes #开启AOF持久化日志
[root@localhost redis]# mkdir /redisdb
2、启动redis
[root@localhost redis]# redis-server /etc/redis.conf
[root@localhost redis]# ps aux|grep redis
root 29198 0.0 0.3 129500 3596 ? Ssl 20:11 0:00 redis-server 0.0.0.0:6379
root 29202 0.0 0.2 103312 2108 pts/0 S+ 20:12 0:00 grep redis
[root@localhost redis]# netstat -anptul|grep redis
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN 29198/redis-server
2、停止redis
[root@localhost redis]# redis-cli shutdown
二、主从复制：
主：192.168.1.78 ----------------->从：192.168.1.53
主的配置就没啥可讲的了，配置如上。下面讲下从的配置，从的配置也很简单,只需要在其配置文件中开启slaveof就行了,例如：
slaveof 192.168.1.78 6379
masterauth flux100plat
[root@localhost ~]# grep -v "^#" /etc/redis.conf |grep -v "^$"
bind 0.0.0.0
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile ""
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /redisdb
slaveof 192.168.1.78 6379
masterauth flux100plat
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
appendonly yes
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes
然后重启：
[root@localhost redis]# redis-cli shutdown
[root@localhost redis]# redis-server /etc/redis.conf
查看配置：
[root@localhost ~]# redis-cli
127.0.0.1:6379> INFO replication
# Replication
role:slave
master_host:192.168.1.78
master_port:6379
master_link_status:up
master_last_io_seconds_ago:6
master_sync_in_progress:0
slave_repl_offset:57
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
127.0.0.1:6379> scan 0
1) "128"
2) 1) "1386229"
2) "1529562"
3) "1377317"
4) "1886250"
5) "1381493"
6) "1889670"
7) "1365620"
8) "1377610"
9) "1377173"
10) "1515178"
---------------------可以看到数据都同步过来了
在主上查看：
[root@localhost ~]# redis-cli
127.0.0.1:6379> auth flux100plat
OK
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.1.53,port=6379,state=online,offset=1289,lag=1
master_repl_offset:1289
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2
repl_backlog_histlen:1288
在从库上执行下面的命令：
slaveof 192.168.1.78 3789 masterauth flux100plat
也可以进行同步操作
slaveof no one 中断复制
本文出自 “linunx运维专题” 博客，请务必保留此出处http://lijianmin2008.blog.51cto.com/621678/1925098
redis数据库主从复制