Memcache 安裝與使用

1. 用戶、組建立

• groupadd memcache 建立組
• cat /etc/passwd|grep memcache 查看用戶是否建立
• useradd -d /usr/memcache -g memcache -m memcache 建立用戶

2. 下載

• wget http://www.danga.com/memcached/dist/memcached-1.2.2.tar.gz 下載Memcache
• wget --no-check-certificate http://www.monkey.org/~provos/libevent-1.3.tar.gz 下載依賴libevent 官網：http://www.monkey.org/~provos/libevent/

3. 解壓

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

4. 安裝libevent

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

5. 安裝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.啓動Memcached服務器

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

• -d選項是啓動一個守護進程
• -m是分配給Memcache使用的內存數量，單位是MB，這裏是10MB
• -u是運行Memcache的用戶，我這裏是root
• -l是監聽的服務器IP地址，若是有多個地址的話，這裏指定了服務器的IP地址192.168.8.105
• -p是設置Memcache監聽的端口，我這裏設置了12000，最好是1024以上的端口
• -c選項是最大運行的併發鏈接數，默認是1024，我這裏設置了256，按照你服務器的負載量來設定
• -P是設置保存Memcache的pid文件，我這裏是保存在 /tmp/memcached.pid

2. 執行報錯：

[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

解決方法：[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是否啓動 4. 關閉進程 _ kill cat /tmp/memcached.pid

6.開機自啓動

• 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用戶啓動

6. 測試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

未安裝telnet:yum install telnet