author：skate
time：2010-12-18
linux下 memcached-1.4.5 安装
os版本：CentOS release 4.7
一. 安装：libevent
下载地址：http://www.monkey.org/~provos/libevent/
./configure --prefix=/usr/local/libevent
make && make install
二. 安装：memcached
下载地址：http://code.google.com/p/memcached/downloads/list
wget http://memcached.org/latest
tar -zxvf memcached-1.4.5.tar.gz
cd memcached-1.4.5
./configure --prefix=/usr/local/memcache --with-libevent=/usr/local/libevent/
make && make install
错误1：
安装包的时候运行./configure --prefix=/usr/local/memcache --with-libevent=/usr/local/libevent/ 时出现下面的提示：
checking build system type... Invalid configuration `i686-pc-linux-': machine `i686-pc-linux' not recognized
configure: error: /bin/sh config/config.sub i686-pc-linux- failed
解决方法：
./configure --prefix=/usr/local/memcache --with-libevent=/usr/local/libevent/ --build=i686-pc-linux-gnu
错误2：
configure: error: no acceptable C compiler found in $PATH
解决方法：
yum install gcc
./configure --prefix=/usr/local/memcache --with-libevent=/usr/local/libevent/
make && make install
三. 启动服务 ：
memcached -d -m 10 -u root -l 192.168.40.4 -p 12000 -c 256 -P /tmp/memcached.pid (完整启动)
memcached -d -m 1024 -u root -p 55001 -c 2048 (默认启动)
参数说明:
-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
-p是设置Memcache监听的端口,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，按照你服务器的负载量来设定
-P是设置保存Memcache的pid文件
-vv 调试模式
在启动memcache时会遇到如下的错误
[root@crs2 memcached-1.4.5]# ./memcached -d -m 64 -u root -p 55001 -c 2048
./memcached: error while loading shared libraries: libevent-2.0.so.2: cannot open shared object file: No such file or directory
解决方法：
[root@crs2 memcached-1.4.5]# LD_DEBUG=libs /usr/local/memcache/bin/memcached -v
9957: find library=libevent-2.0.so.2 [0]; searching
9957: search cache=/etc/ld.so.cache
9957: search path=/lib/tls/i686/sse2:/lib/tls/i686:/lib/tls/sse2:/lib/tls:/lib/i686/sse2:/lib/i686:/lib/sse2:/lib:/usr/lib/tls/i686/sse2:/usr/lib/tls/i686:/usr/lib/tls/sse2:/usr/lib/tls:/usr/lib/i686/sse2:/usr/lib/i686:/usr/lib/sse2:/usr/lib (system search path)
9957: trying file=/lib/tls/i686/sse2/libevent-2.0.so.2
9957: trying file=/lib/tls/i686/libevent-2.0.so.2
9957: trying file=/lib/tls/sse2/libevent-2.0.so.2
9957: trying file=/lib/tls/libevent-2.0.so.2
9957: trying file=/lib/i686/sse2/libevent-2.0.so.2
9957: trying file=/lib/i686/libevent-2.0.so.2
9957: trying file=/lib/sse2/libevent-2.0.so.2
9957: trying file=/lib/libevent-2.0.so.2
9957: trying file=/usr/lib/tls/i686/sse2/libevent-2.0.so.2
9957: trying file=/usr/lib/tls/i686/libevent-2.0.so.2
9957: trying file=/usr/lib/tls/sse2/libevent-2.0.so.2
9957: trying file=/usr/lib/tls/libevent-2.0.so.2
9957: trying file=/usr/lib/i686/sse2/libevent-2.0.so.2
9957: trying file=/usr/lib/i686/libevent-2.0.so.2
9957: trying file=/usr/lib/sse2/libevent-2.0.so.2
9957: trying file=/usr/lib/libevent-2.0.so.2
9957:
/usr/local/memcache/bin/memcached: error while loading shared libraries: libevent-2.0.so.2: cannot open shared object file: No such file or directory
创建了软连接就可以解决
[root@crs2 memcached-1.4.5]# ln -s /usr/local/libevent/lib/libevent-2.0.so.2 /lib/libevent-2.0.so.2
这时，再启动memcached 就可以了
[root@crs2 memcached-1.4.5]# ./memcached -d -m 64 -u root -p 55001 -c 2048
登录memcache
[root@crs2 memcached-1.4.5]# telnet 127.0.0.1 55001
Trying 127.0.0.1...
Connected to localhost (127.0.0.1).
Escape character is '^]'.
stats
STAT pid 9963
STAT uptime 307
STAT time 1292559170
STAT version 1.4.5
STAT pointer_size 32
STAT rusage_user 0.000000
STAT rusage_system 0.043993
STAT curr_connections 10
STAT total_connections 11
STAT connection_structures 11
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 7
STAT bytes_written 0
STAT limit_maxbytes 67108864
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
quit
Connection closed by foreign host.
参考官方文档：
http://code.google.com/p/memcached/wiki/NewInstallFromSource
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