redis主从+高可用
redis安装忽略
189和187 （M/S）
M的几个参数：
daemonize yes
pidfile /var/run/redis.pid
port 6379
timeout 0
tcp-keepalive 0
loglevel notice
logfile stdout
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 ./
requirepass password
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 100
maxmemory 5G
appendonly no
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
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
S的参数
daemonize yes
pidfile /var/run/redis.pid
port 6379
timeout 0
tcp-keepalive 0
loglevel notice
logfile stdout
databases 16
save 900 1
save 300 10
save 60 10000
slaveof 192.168.1.189 6379
masterauth password
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 100
maxmemory 5G
appendonly no
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
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
然后redis目录下的dump.rdb给了 777 权限 担心不能写入数据。
然后就可以在 S 上执行 redis-cli -a password
模拟宕机
高可用这块的话 基于ip切换
在M的网卡上
ifconfig eth1:1 1.1.1.1 netmask 255.x.x.x up
在S上写个脚本监控M的ip宕机否
宕机就切ip 类似于keepalived的功能
[root@tx ~]# cat /root/mo/ping.sh
#!/bin/sh
# -q quiet
# -c nb of pings to perform
ping -q -c5 192.168.1.1xx > /dev/null
if [ $? -eq 0 ]
then
echo "ok"
else
ifconfig eth1:1 192.168.1.189 netmask 255.255.255.0 up
fi