RedHat Linux AS 5下memcached的安装
一、软件准备
memcached-1.4.13.tar.gz，下载地址：http://memcached.org/
libevent-2.0.19-stable.tar.gz，下载地址：http://libevent.org/
二、具体安装
1、安装libevent
[root@localhost tools]# tar zxvf libevent-2.0.19-stable.tar.gz
[root@localhost tools]# cd libevent-2.0.19-stable
[root@localhost libevent-2.0.19-stable]# ./configure --prefix=/usr
[root@localhost libevent-2.0.19-stable]# make
[root@localhost libevent-2.0.19-stable]# make install
2、memcached安装
[root@localhost tools]# tar zxvf memcached-1.4.13.tar.gz
[root@localhost tools]# cd memcached-1.4.13/
[root@localhost memcached-1.4.13]# ./configure --prefix=/usr/local
[root@localhost memcached-1.4.13]# make
[root@localhost memcached-1.4.13]# make install
3、测试是否安装成功
[root@localhost memcached-1.4.13]# ls -la /usr/local/bin/mem*
-rwxr-xr-x 1 root root 201441 Nov 8 15:10 /usr/local/bin/memcached
[root@localhost memcached-1.4.13]#
4、将libevent安装的/usr/local/lib输出到引用库路径
# vi ~/.bash_profile
加入如下一行：
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
5、启动memcache的服务器端
[root@localhost tools]# memcached -d -m 100 -l 192.168.11.193 -p 11211 -u root -c 256 -P /tmp/memcached.pid
[root@localhost tools]# netstat -an|grep 11211
tcp 0 0 192.168.0.14:11211 0.0.0.0:* LISTEN
udp 0 0 192.168.0.14:11211 0.0.0.0:*
启动选项说明：
-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，我这里是100MB，
-u是运行memcache的用户，也可以使用adduser为memcahed专门创建一个用户
-l是监听的服务器IP地址，这里指定了服务器的IP地址192.168.11.193
-p是设置memcache监听的端口，我这里设置了11211，由于是默认端口，因此不指定-p参数也可
-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
6、结束memcache进程，执行：
[root@localhost tools]# kill cat /tmp/memcached.pid
或者取出/tmp/memcached.pid文件里的进程号，然后kill -9 进程号
也可以启动多个守护进程，不过端口不能重复。
7、测试
另外打开一个终端，执行下面的命令
[root@localhost ~]# telnet 192.168.11.193 11211
Trying 192.168.11.193...
Connected to 192.168.11.193 (192.168.11.193).
Escape character is '^]'.
stats
STAT pid 20376
STAT uptime 236
STAT time 1289201148
STAT version 1.4.5
STAT pointer_size 32
STAT rusage_user 0.000000
STAT rusage_system 0.000000
STAT curr_connections 5
STAT total_connections 8
STAT connection_structures 6
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 72
STAT bytes_written 84
STAT limit_maxbytes 104857600
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END
恭喜你！安装成功。
