1.先下载相关资源libevent 和memcached;
#cd /temp
#wget http://monkey.org/~provos/libevent-2.0.10-stable.tar.gz
#wget http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz
2.判断系统是否已经安装了libevent
#rpm -qa | grep libevent
输出:libevent-1.1a-3.2.1
#rpm -e --nodeps libevent-1.1a-3.2.1(删除低版本,安装2.0.10)
3.安装libevent
#tar xvzf libevent-2.0.10-stable.tar.gz
#cd libevent-2.0.10-stable
#./configure -prefix=/usr (安装路径/usr/lib)
#make
#make install
#ls -a /usr/lib | grep libevent (测试是否安装上)
4.安装memcached
#tar xvzf memcached-1.4.5.tar.gz
#cd memcached-1.4.5
#./configure -with-libevent=/usr (默认安装/usr/local/bin/memcached)
#make
#make install
5.以上已安装完毕,现在开始启动
#memcached -d -m 128 -l localhost -p 11211 -u root
有可能出错(未加载libevent-2.0.so.5,启动失败):
memcached: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory
解决方式:
查看memcached寻找libevent-2.0.so.5模块的路径
#LD_DEBUG=libs memcached -v
28788: find library=libevent-2.0.so.5 [0]; searching
28788: search cache=/etc/ld.so.cache
28788: search path=/lib64/tls/x86_64:/lib64/tls:/lib64/x86_64:/lib64:/usr/lib64/tls/x86_64:/usr/lib64/tls:/usr/lib64/x86_64:/usr/lib64 (system search path)
28788: trying file=/lib64/tls/x86_64/libevent-2.0.so.5
28788: trying file=/lib64/tls/libevent-2.0.so.5
28788: trying file=/lib64/x86_64/libevent-2.0.so.5
28788: trying file=/lib64/libevent-2.0.so.5
28788: trying file=/usr/lib64/tls/x86_64/libevent-2.0.so.5
28788: trying file=/usr/lib64/tls/libevent-2.0.so.5
28788: trying file=/usr/lib64/x86_64/libevent-2.0.so.5
28788: trying file=/usr/lib64/libevent-2.0.so.5
28788:
memcached: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory
从上面的内容可看到memcached是从哪些路径里面去寻找libevent-2.0.so.5的,随便找一个路径,软链接过去即可
#ln -s /usr/lib/libevent-2.0.so.5 /usr/lib64/libevent-2.0.so.5
#memcached -d -m 128 -l localhost -p 11211 -u root
# ps -ef | grep memcached
root 28914 1 0 07:27 ? 00:00:00 memcached -d -m 128 -l localhost -p 11211 -u root (启动ok)
6.测试memcached
#telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
set foo 0 0 3 (保存命令)
bar (数据)
STORED (结果)
get foo (取得命令)
VALUE foo 0 3 (数据)
bar (数据)
备注:
1.启动Memcache的服务器端:
# /usr/local/bin/memcached -d -m 10 -u root -l 192.168.0.200 -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,默认64MB, 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,默认为所有网卡。 我这里指定了服务器的IP地址192.168.0.200,
-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,
-p 使用的TCP端口。默认为11211
-m 最大内存大小。默认为64M
-vv 用very vrebose模式启动,调试信息和错误输出到控制台
-d 作为daemon在后台启动
2.如果要结束Memcache进程,执行:
# kill `cat /tmp/memcached.pid`
或是 通过ps -ef | grep memcached 找到pid ,然后kill,也可以启动多个守护进程,不过端口不能重复。
--转自
该贴由koei123转至本版2015-6-1 15:09:18