Linux上完美安装memcache(含自启动)
一、安装依赖库libevent
1.进入/usr/lib目录,使用命令:ls -al libevent 查看是否已安装,如果已安装且版本低于2.0.21,则先通过:rpm -e libevent —nodeps 进行卸载。
2.上传libevent-2.0.21-stable.tar.gz至非usr目录下(因为libevent将安装到usr目录,所以最好换个目录存放安装文件,例如/home),然后解压。
3.切换到解压后的 libevent 主目录:cd libevent-2.0.21-stable
4.依次执行:
1) ./configure -prefix=/usr(或 ./configure --program-prefix=/usr)
2) make
3) make install
注意:
1) 执行 make install 时可能需要 root 权限。
2) libevent会安装到 /usr/lib下
5.测试libevent是否安装成功:ls -al /usr/lib|grep libevent出现类似下图结果则表示安装成功:
6.有时候,libevent会被安装目录到/usr/local/lib下(采用默认安装就会安装到这个目录),这种情况下除了按照1-5的步骤操作外,还需要建立libevent-2.0.so.5 到 /usr/lib 的软连接,这样其他程序运行时才能找到libevent库:
ln –s /usr/local/lib/libevent-2.0.so.5 /usr/lib/libevent-2.0.so.5
7.在64位机器上还需做一个64位库的链接,否则运行memcache时会报找不到libevent的错误
ln -s/usr/lib/libevent-2.0.so.5 /usr/lib64/libevent-2.0.so.5
二、安装memcache(源代码安装)
1.上传memcached-1.4.15.tar.gz至非usr目录下(因为memcached-1.4.15将安装到usr目录,所以最好换个目录存放安装文件,例如/home),然后解压。
2.切换到解压后的 memcache主目录:cd memcached-1.4.15
3.依次执行:
1) ./configure -prefix=/usr/local/memcached --with-libevent=/usr
2) make
3) make install
注意:
1) 执行 make install时可能需要 root权限。
2) memcache会安装到 /usr/local/memcached下
三、安装memcache(安装包安装)--待补充
四、配置为自启动服务
1.编写memcached自启动脚本或直接使用memcached安装包中的脚本(位置如下,本文使用官方自带的脚本)
2.修改自启动脚本(红色部分标识,中文注释仅限本文提示用,安装包没有)
#! /bin/sh # # chkconfig: - 55 45 # description: The memcached daemon is a network memory cache service. # processname: memcached # config: /etc/sysconfig/memcached
# Source function library - for other linux #. /etc/rc.d/init.d/functions # Source function library - for suse linux . /lib/lsb/init-functions
PORT=11211 USER=root #最大连接数,根据实际需求修改 MAXCONN=1024 #最大内存量,单位M CACHESIZE=128 OPTIONS=""
if [ -f /etc/sysconfig/memcached ];then . /etc/sysconfig/memcached fi
# Check that networking is up. if [ "$NETWORKING" = "no" ] then exit 0 fi
RETVAL=0 prog="memcached"
start () { echo -n $"Starting $prog: " # insure that /usr/local/memcached has proper permissions chown $USER /usr/local/memcached /usr/local/memcached/bin/memcached -d -p $PORT -u $USER -m $CACHESIZE -c $MAXCONN -P /usr/local/memcached/memcached.pid $OPTIONS RETVAL=$? echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcached } stop () { echo -n $"Stopping $prog: " killproc memcached RETVAL=$? echo if [ $RETVAL -eq 0 ] ; then rm -f /var/lock/subsys/memcached rm -f /usr/local/memcached/memcached.pid fi }
restart () { stop start }
# See how we were called. case "$1" in start) start ;; stop) stop ;; status) status memcached ;; restart|reload) restart ;; condrestart) [ -f /var/lock/subsys/memcached ] && restart || : ;; *) echo $"Usage: $0 {start|stop|status|restart|reload|condrestart}" exit 1 esac
exit $? |
3.将此脚本cp到/etc/init.d目录下并改名为memcached,然后执行chmod a+x memcached,如下:
shell > cp memcached.sysv /etc/init.d/memcached
shell > chmod 755 /etc/init.d/memcached
4.将memcached加入系统服务:
shell > chkconfig --add memcached
shell > chkconfig memcached on
5.以服务方式运行memcached
shell > service memcached start
以上如成功则重启下系统后查看下memcached是否已随系统启动