Redis分散式快取安裝和使用

weixin_33861800發表於2017-12-07

獨立快取伺服器: LinuxCentOS

Redis版本: 3.0

下面我們針對於Redis安裝做下詳細的記錄:

編譯和安裝所需的包:

#yum install gcc tcl建立安裝目錄:

#mkdir /usr/local/redis

解壓:

#tar -zxvf 3.xx.tar.gz

#mv redis-3.xx redis3.0

#cd redis3.0安裝(使用PREFIX指定安裝目錄):

#make PREFIX=/usr/local/redis install

安裝完成後,可以看到/usr/local/redis目錄下有一個bin目錄,bin目錄裡就是redis的命令指令碼:

redis-benchmark redis-check-aof redis-check-dumpredis-cli redis-server

將Redis配置成服務:

按上面的操作步驟,Redis的啟動指令碼為:/usr/local/src/redis3.0/utils/redis_init_script

將啟動指令碼複製到/etc/rc.d/init.d/目錄下,並命名為redis

#cp /usr/local/src/redis3.0/utils/redis_init_script/etc/rc.d/init.d/redis編輯/etc/rc.d/init.d/redis,修改相應配置,使之能註冊成為服務:

#vi/etc/rc.d/init.d/redis

#!/bin/sh

#

# Simple Redis init.d script conceived to work on Linux systems

# as it does use of the /proc filesystem.

REDISPORT=6379

EXEC=/usr/local/bin/redis-server

CLIEXEC=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid

CONF="/etc/redis/${REDISPORT}.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

;;

stop)

if [ ! -f $PIDFILE ]

then

echo "$PIDFILE does not exist, process is not running"

else

PID=$(cat $PIDFILE)

echo "Stopping ..."

$CLIEXEC -p $REDISPORT shutdown

while [ -x /proc/${PID} ]

do

echo "Waiting for Redis to shutdown ..."

sleep 1

done

echo "Redis stopped"

fi

;;

*)

echo "Please use start or stop as first argument"

;;

esac

檢視以上redis服務指令碼,關注標為橙色的幾個屬性,做如下幾個修改的準備:

(1)在指令碼的第一行後面新增一行內容如下:

#chkconfig: 2345 80 90

提醒:如果不新增上面的內容,在註冊服務時會提示:service redis does not support chkconfig

(2)REDISPORT埠保持6379不變;(特別注意:埠名將與下面的配置檔名有關)

(3)EXEC=/usr/local/bin/redis-server改為EXEC=/usr/local/redis/bin/redis-server

(4)CLIEXEC=/usr/local/bin/redis-cli改為CLIEXEC=/usr/local/redis/bin/redis-cli

(5)配置檔案設定:

建立redis配置檔案目錄

#mkdir /usr/local/redis/conf

複製redis配置檔案/usr/local/src/redis3.0/redis.conf到/usr/local/redis/conf目錄並按埠號重新命名為6379.conf

#cp /usr/local/src/redis3.0/redis.conf/usr/local/redis/conf/6379.conf

做了以上準備後,再對CONF屬性作如下調整:

CONF="/etc/redis/${REDISPORT}.conf"改為CONF="/usr/local/redis/conf/${REDISPORT}.conf"

(6)更改redis開啟的命令,以後臺執行的方式執行:

$EXEC $CONF&#“&”作用是將服務轉到後面執行

修改後的/etc/rc.d/init.d/redis服務指令碼內容為:

#!/bin/sh

#chkconfig: 2345 80 90

#

# Simple Redis init.d script conceived to work on Linux systems

# as it does use of the /proc filesystem.

REDISPORT=6379

EXEC=/usr/local/redis/bin/redis-server

CLIEXEC=/usr/local/redis/bin/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid

CONF="/usr/local/redis/conf/${REDISPORT}.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

;;

stop)

if [ ! -f $PIDFILE ]

then

echo "$PIDFILE does not exist, process is not running"

else

PID=$(cat $PIDFILE)

echo "Stopping ..."

$CLIEXEC -p $REDISPORT shutdown

while [ -x /proc/${PID} ]

do

echo "Waiting for Redis to shutdown ..."

sleep 1

done

echo "Redis stopped"

fi

;;

*)

echo "Please use start or stop as first argument"

;;

esac

以上配置操作完成後,便可將Redis註冊成為服務:

#chkconfig --add redis

防火牆中開啟對應的埠

#vi /etc/sysconfig/iptables

新增:

-A INPUT -m state --state NEW -m tcp -p tcp --dport6379 -j ACCEPT

重啟防火牆:

#service iptables restart

修改redis配置檔案設定:

#vi /usr/local/redis/conf/6379.conf

修改如下配置

daemonizeno改為daemonizeyes

備註:如果不改為yes,pid檔案是不會生成,start、stop命令是不會生效的(依賴pid檔案)

pidfile /var/run/redis.pid改為pidfile /var/run/redis_6379.pid

啟動Redis服務

#service redis start

將Redis新增到環境變數中:

#vi /etc/profile

在最後新增以下內容:

## Redis env

export PATH=$PATH:/usr/local/redis/bin

使配置生效:

#source /etc/profile

當前可以直接使用redis-cli等redis命令了:

#redis-cli



關閉Redis服務

#service redis stop提醒:預設情況下,Redis開啟安全認證,可以通過/usr/local/redis/conf/6379.conf的requirepass指定一個驗證密碼

在jeesz中主要使用redis做分散式快取,儲存登入使用者資訊,做session共享管理



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