前言
主機(jī)：
172.17.209.25
172.17.209.26
軟件版本：
keepalived-1.2.19.tar.gz
redis-2.8.1.tar.gz
一、安裝Redis
(1)安裝
tar -xvf redis-2.8.1.tar.gz
cd redis-2.8.1
make
mkdir -p /usr/local/redis/var
cd src
cp redis-server redis-sentinel redis-cli redis-check-dump redis-check-aof redis-benchmark /usr/local/redis/
(2)配置成系統(tǒng)服務(wù)
vi /etc/init.d/redis
#!/bin/bash
#
# init file for redis
#
# chkconfig: - 80 12
# description: redis daemon
#
# processname: redis
# config: /usr/local/redis/redis.conf
# pidfile: /usr/local/redis/var/redis.pid
source /etc/init.d/functions
REDISPORT=6379
EXEC=/usr/local/redis/redis-server
REDIS_CLI=/usr/local/redis/redis-cli
PIDFILE=/usr/local/redis/var/redis.pid
CONF="/usr/local/redis/redis.conf"
case "$1" in
start)
if [ -f $PIDFILE ]
then
echo "$PIDFILE exists, process is already running or crashed"
else
echo "Starting Redis server..."
$EXEC $CONF
fi
if [ "$?"="0" ]
then
echo "Redis is running..."
fi
;;
stop)
if [ ! -f $PIDFILE ]
then
echo "$PIDFILE does not exist, process is not running"
else
PID=$(cat $PIDFILE)
echo "Stopping ..."
$REDIS_CLI -p $REDISPORT SHUTDOWN
while [ -x ${PIDFILE} ]
do
echo "Waiting for Redis to shutdown ..."
sleep 1
done
echo "Redis stopped"
fi
;;
restart|reload)
${0} stop
${0} start
;;
*)
echo "Usage: /etc/init.d/redis {start|stop|restart|reload}" >&2
exit 1
esac
(3)配置redis
vi /usr/local/redis/redis.conf
daemonize yes
pidfile /usr/local/redis/var/redis.pid
port 6379
timeout 300
loglevel notice
logfile /usr/local/redis/var/redis.log
databases 16
save 900 1
save 300 10
save 60 10000
rdbcompression yes
dbfilename dump.rdb
dir /usr/local/redis/var/
#8g memory 32*1024*1024*1024
maxmemory 34359738368
appendonly no
(4)配置自啟動(dòng)
chkconfig nginx on
(5)相關(guān)命令
啟動(dòng):service redis start
關(guān)閉:service redis stop
(6)查看服務(wù)
ps -ef | grep redis
(7)拷貝redis到另一臺(tái)器機(jī)9.26
scp -r /usr/local/redis/ root@172.17.209.26:/usr/local/
scp -r /etc/init.d/redis root@172.17.209.26:/etc/init.d/
二、安裝keepalived
(1)安裝
tar -zxvf keepalived-1.2.19.tar.gz
cd keepalived-1.2.19
./configure --prefix=/usr/local/keepalived
make
make install
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
mkdir -p /etc/keepalived
mkdir -p /usr/local/keepalived/var/log
mkdir -p /usr/local/keepalived/scripts/redis
備注：在9.26上也要?jiǎng)?chuàng)建目錄：/etc/keepalived，/usr/local/keepalived/var/log，/usr/local/keepalived/scripts/redis
(3)配置keepalived.conf
vi /etc/keepalived/keepalived.conf
vrrp_script chk_redis {
script "/usr/local/keepalived/scripts/redis/redis_check.sh" ###監(jiān)控腳本
interval 2 ###監(jiān)控時(shí)間
fall 3 ###失敗嘗試3次
rise 1 ###成功嘗試1次
}
vrrp_instance VI_1 {
state MASTER ###設(shè)置為MASTER、BACKUP
interface eth0 ###監(jiān)控網(wǎng)卡，網(wǎng)卡必須有接網(wǎng)線，可以對(duì)外網(wǎng)通信的
virtual_router_id 55 ###主從需要在同一路由編號(hào)
priority 101 ###權(quán)重值
authentication {
auth_type PASS ###加密
auth_pass redis ###密碼
}
track_script {
chk_redis ###執(zhí)行上面定義的chk_redis
}
virtual_ipaddress {
172.17.209.20 dev eth0 scope globa ###Keppalived虛擬出來的VIP
}
notify_master "/usr/local/keepalived/scripts/redis/redis_master.sh 172.17.209.26 6379"
notify_backup "/usr/local/keepalived/scripts/redis/redis_backup.sh 172.17.209.26 6379"
notify_fault "/usr/local/keepalived/scripts/redis/redis_fault.sh"
notify_stop "/usr/local/keepalived/scripts/redis/redis_stop.sh"
}
備注：拷貝到9.26后，要改一下notify_master和notify_backup參數(shù)中的172.17.209.26為172.17.209.25；
(4)配置自啟動(dòng)
chkconfig keepalived on
(5)相關(guān)命令
啟動(dòng):service keepalived start
關(guān)閉:service keepalived stop
(6)查看服務(wù)
ps -ef | grep keepalived
(7)配置keepalived相關(guān)redis檢查腳本
(1)redis_master.sh
#!/bin/bash
REDISCLI="/usr/local/redis/redis-cli"
LOGFILE="/data/keepalived/log/keepalived-redis-state.log"
echo "[master]" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >> $LOGFILE 2>&1
echo "Run SLAVEOF cmd ..." >> $LOGFILE
$REDISCLI SLAVEOF $1 $2 >> $LOGFILE 2>&1
sleep 10 #延遲10秒以后待數(shù)據(jù)同步完成后再取消同步狀態(tài)
echo "Run SLAVEOF NO ONE cmd ..." >> $LOGFILE
$REDISCLI SLAVEOF NO ONE >> $LOGFILE 2>&1
(2)redis_backup.sh
#!/bin/bash
REDISCLI="/usr/local/redis/redis-cli"
LOGFILE="/data/keepalived/log/keepalived-redis-state.log"
echo "[backup]" >> $LOGFILE
date >> $LOGFILE
echo "Being slave...." >> $LOGFILE 2>&1
sleep 15 #..15....................
echo "Run SLAVEOF cmd ..." >> $LOGFILE
$REDISCLI SLAVEOF $1 $2 >> $LOGFILE 2>&1
(3)redis_fault.sh
#!/bin/bash
LOGFILE=/data/keepalived/log/keepalived-redis-state.log
echo "[fault]" >> $LOGFILE
date >> $LOGFILE
(4)redis_stop.sh
#!/bin/bash
LOGFILE=/data/keepalived/log/keepalived-redis-state.log
echo "[stop]" >> $LOGFILE
date >> $LOGFILE
(5)redis_check.sh
#!/bin/bash
ALIVE=`/usr/local/redis/redis-cli PING`
if [ "$ALIVE" == "PONG" ]; then
echo $ALIVE
exit 0
else
echo $ALIVE
exit 1
fi
將以上shell拷貝到目錄：/usr/local/keepalived/scripts/redis/，
然后賦權(quán)：chmod 755 /usr/local/keepalived/scripts/redis/*.sh
(8)拷貝redis到另一臺(tái)器機(jī)9.26
scp -r /usr/sbin/keepalived root@172.17.209.26:/usr/sbin/
scp -r /etc/sysconfig/keepalived root@172.17.209.26:/etc/sysconfig/
scp -r /etc/init.d/keepalived root@172.17.209.26:/etc/init.d/
scp -r /usr/local/keepalived/scripts/redis/* root@172.17.209.26:/usr/local/keepalived/scripts/redis
三、測(cè)試方案
查看日志命令：tailf -500 /data/keepalived/log/keepalived-redis-state.log
查看redis主從角色命令：/usr/local/redis/redis-cli -p 6379 info replication
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