just do it

RedHat Linux AS 4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。

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