Redis主从架构和高可用性实现过程

# cat redis.conf
daemonize yes
pidfile "/var/run/redis.pid"
port 16465
timeout 300
tcp-keepalive 60
loglevel notice
logfile "/data/log/redis.log"
databases 16
stop-writes-on-bgsave-error no
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/data/datafile"
masterauth "password"
slave-serve-stale-data yes
slave-read-only yes
repl-ping-slave-period 10
repl-timeout 600
repl-disable-tcp-nodelay no
repl-backlog-size 64mb
repl-backlog-ttl 3600
slave-priority 100
requirepass "password"
maxmemory 10000000000
maxmemory-policy noeviction
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 20000
slowlog-max-len 128
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-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 8gb 4gb 600
client-output-buffer-limit pubsub 32mb 8mb 60
aof-rewrite-incremental-fsync yes
lazyfree-lazy-expire yes
lazyfree-lazy-server-del yes
slave-lazy-flush yes
aof-use-rdb-preamble yes
maxclients 4064

slaveof 主ip 16465

 /data/redis/bin/redis-server /data/redis/conf/redis.conf

# cat /etc/keepalived/keepalived.conf 
global_defs {   
        router_id LVS_DEVEL
        script_user root
        enable_script_security    
}
vrrp_script chk_16465 {
        script "/var/keepalived/scripts/redis_check.sh password 16465"
        interval 1
        weight -20
        rise 3
        fall 3
}
vrrp_instance redis_6465 {
        state BACKUP
        interface bond1
        virtual_router_id 52
        priority 90
        advert_int 1
        authentication {
                auth_type PASS
                auth_pass 1111
        }
        virtual_ipaddress {
                vip
        }
        track_script {
                chk_16465
        }
        notify_master "/var/keepalived/scripts/redis_master.sh  password 16465"
        notify_backup "/var/keepalived/scripts/redis_slave.sh  password 16465 masterip  "
        notify_fault "/var/keepalived/scripts/redis_falut.sh"
        notify_stop "/var/keepalived/scripts/redis_stop.sh"
}

state MASTER
priority 100

#cat /var/keepalived/scripts/redis_check.sh 
#!/bin/bash
CMD_RES=`/paic/redis/4.0.10/bin/redis-cli -a $1 -p $2 PING 2>/dev/null`
LOG_FILE="/var/keepalived/logs/redis-state.log"
if [ "$CMD_RES"x == "PONG"x ]; then :
   echo "[CHECK] `date`, SUCCESS" >> $LOG_FILE 2>&1
    exit 0
else
    echo "[CHECK] `date`, ERROR" >> $LOG_FILE 2>&1
    exit 1
fi
# cat /var/keepalived/scripts/redis_master.sh 
#!/bin/bash
CMD="/paic/redis/4.0.10/bin/redis-cli"
LOG_FILE="/var/keepalived/logs/redis-change.log"
echo "[MASTER] `date`" >> $LOG_FILE
echo "Run SLAVEOF NO ONE cmd" >> $LOG_FILE
$CMD -a $1 -p $2 SLAVEOF NO ONE >> $LOG_FILE 2>&1
#cat /var/keepalived/scripts/redis_slave.sh 
#!/bin/bash
CMD="/paic/redis/4.0.10/bin/redis-cli"
LOG_FILE="/var/keepalived/logs/redis-change.log"
echo "[BACKUP] `date`" >> $LOG_FILE
echo "Being slave wait to sync data" >> $LOG_FILE
sleep 1  
echo "Run SLAVEOF cmd" >> $LOG_FILE
$CMD -a $1 -p $2 SLAVEOF $3 $2 >> $LOG_FILE  2>&
#cat /var/keepalived/scripts/redis_falut.sh 
#!/bin/bash
LOG_FILE="/var/keepalived/logs/redis-state.log"
echo "[FAULT] `date`" >> $LOG_FILE