Memcache 安装与使用

1. 用户、组创建

• groupadd memcache 创建组
• cat /etc/passwd|grep memcache 查看用户是否创建
• useradd -d /usr/memcache -g memcache -m memcache 创建用户

2. 下载

• wget http://www.danga.com/memcached/dist/memcached-1.2.2.tar.gz 下载Memcache
• wget --no-check-certificate http://www.monkey.org/~provos/libevent-1.3.tar.gz 下载依赖libevent 官网：http://www.monkey.org/~provos/libevent/

3. 解压

• tar -zxvf libevent-1.3.tar.gz
• tar -zxvf memcached-1.2.2.tar.gz

4. 安装libevent

1. ./configure --prefix=/usr
2. [root@CentOSv64x64 libevent-1.3]# make
3. [root@CentOSv64x64 libevent-1.3]# make install

5. 安装Memcache

1. ./configure --with-libevent=/usr

2. [root@CentOSv64x64 memcached-1.2.2]# make

3. [root@CentOSv64x64 memcached-1.2.2]# make install

   [root@CentOSv64x64 memcached-1.2.2]# make install Making install in doc make[1]: Entering directory /usr/memcache/install/memcached-1.2.2/doc' make[2]: Entering directory /usr/memcache/install/memcached-1.2.2/doc' make[2]: Nothing to be done for install-exec-am'. /bin/sh ../mkinstalldirs /usr/local/man/man1 mkdir -p -- /usr/local/man/man1 /usr/bin/install -c -m 644 ./memcached.1 /usr/local/man/man1/memcached.1 make[2]: Leaving directory /usr/memcache/install/memcached-1.2.2/doc' make[1]: Leaving directory /usr/memcache/install/memcached-1.2.2/doc' make[1]: Entering directory /usr/memcache/install/memcached-1.2.2' make[2]: Entering directory /usr/memcache/install/memcached-1.2.2' /bin/sh ./mkinstalldirs /usr/local/bin /usr/bin/install -c memcached /usr/local/bin/memcached /usr/bin/install -c memcached-debug /usr/local/bin/memcached-debug make[2]: Nothing to be done for install-data-am'. make[2]: Leaving directory /usr/memcache/install/memcached-1.2.2' make[1]: Leaving directory /usr/memcache/install/memcached-1.2.2'

5.启动Memcached服务器

1. /usr/local/bin/memcached -d -m 50 -u root -l 192.168.8.105 -p 12000 -c 256 -P /tmp/memcached.pid

• -d选项是启动一个守护进程
• -m是分配给Memcache使用的内存数量，单位是MB，这里是10MB
• -u是运行Memcache的用户，我这里是root
• -l是监听的服务器IP地址，如果有多个地址的话，这里指定了服务器的IP地址192.168.8.105
• -p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口
• -c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定
• -P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid

2. 执行报错：

   [root@CentOSv64x64 memcached-1.2.2]# /usr/local/bin/memcached -d -m 50 -u root -l 192.168.8.105 -p 12000 -c 256 -P /tmp/memcached.pid
   /usr/local/bin/memcached: error while loading shared libraries: libevent-1.3.so.1: cannot open shared object file: No such file or directory

解决方法：[root@CentOSv64x64 lib]# ln -s /usr/lib/libevent-1.3.so.1 /usr/lib64/libevent-1.3.so.1 _ 3. ps -aux|grep memcached 查看Memcached是否启动 4. 关闭进程 _ kill cat /tmp/memcached.pid

6.开机自启动

• 在/etc/rc.d/rc.local文件中追加：
• /usr/local/memcached/bin/memcached -d -m 10 -p 12000 -u memcache -c 256 加起-u 不用ROOT用户启动

6. 测试Memcached

[root@CentOSv64x64 ~]# telnet 192.168.8.105 12000
Trying 192.168.8.105...
Connected to 192.168.8.105.
Escape character is '^]'.
set key1 0 60 4
zhou
STORED
get key1
VALUE key1 0 4
zhou
END

未安装telnet:yum install telnet