Redist的主從配置

    Redis的主從複製通常用來在線備份和讀寫分離，提升服務器的負載能力。主數據庫主要進行寫操做，而從數據庫負責讀操做。

 

主從的配置：

主節點：

[root@master ~]# grep -v -E "^#|^$" /etc/redis/6379.conf 
bind 0.0.0.0    //綁定的主機地址。說明只能經過這個ip地址鏈接本機的redis。最好綁定0.0.0.0
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes   //這個修改成yes，守護進程
supervised no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile /var/log/redis_6379.log
databases 16
always-show-logo yes
save 900 1         #啓用RDB快照功能，默認就是啓用的
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /var/lib/redis/6379    ＃redis數據目錄
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly yes   #啓用AOF持久化方式
appendfilename "appendonly.aof"    #AOF文件的名稱，默認爲appendonly.aof
appendfsync everysec    #每秒鐘強制寫入磁盤一次，在性能和持久化方面作了很好的折中，是受推薦的方式。
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble 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
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes

　

從節點的配置，只需加一行replicaof 192.168.0.10 6379 

[root@node2 redis]# grep -v -E "^#|^$" /etc/redis/6379.conf 
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 /var/log/redis_6379.log
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /var/lib/redis/6379
replicaof 192.168.0.10 6379     #主節點redis的IP和端口
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
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
aof-use-rdb-preamble 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
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes

　　啓動主，從節點數據就開始同步了

 

=============================================配置密碼======================================

主節點;

requirepass pass1234  # 注意，這個是鏈接master節點，同步數據用的密碼.  slave節點須要設置這兩個密碼

從節點：

requirepass pass1234     這個是slave節點上登陸本身的redis用的密碼
masterauth pass1234     # 注意，這個是鏈接master節點，同步數據用的密碼.  slave節點須要設置這兩個密碼

　　

使用role和info 查看主從信息

127.0.0.1:6379> role
1) "master"      #主節點
2) (integer) 4740  #偏移量
3) 1) 1) "192.168.0.12"   #從節點
      2) "6379"
      3) "4740"

127.0.0.1:6379> INFO replication
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.0.12,port=6379,state=online,offset=5300,lag=1
master_replid:3f8d3c3ab80297ef3916615f8c3b2c22733814cf
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:5300
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:530

　　

 

參考：

https://redis.io/topics/replication