18 Aug 2015

memcached源码安装、错误处理及启动参数

memcached服务安装:

源码包:memcached-1.4.21.tar.gz

依赖包:libevent-2.0.20-stable.tar.gz

libevent是memcached的基本库

安装首先编译安装libevent,要求为安装三部曲

安装memcached在configure时,若需要安装多个memcached,增加路径参数即可:

./configure –prefix=/usr/local/mem1/

启动方式:

在bin目录下

./memcached -d -c 4096 -m 512 -u root -p 11212
  • -d表示以后台守护进程方式启动

  • -c表示最大连接数

  • -m表示使用内存大小,单位为M

  • -u表示以root用户启动

  • -p表示监听端口号

安装memcache时,需要建立文件索引或者说文件连接(link),类似windows下的快捷方式

启动服务时出现 error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory

解决办法:

whereis libevent-2.0.so.5

libevent-2.0.so.5: /usr/local/lib/libevent-2.0.so.5

ldd /usr/local/bin/memcached (ldd指令不熟悉的去查看下)

libevent-2.0.so.5 => not found (没有找到该文件)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b83fce0e000)

libc.so.6 => /lib64/libc.so.6 (0x00002b83fd029000)

librt.so.1 => /lib64/librt.so.1 (0x00002b83fd381000)

/lib64/ld-linux-x86-64.so.2 (0x00002b83fc9b0000)

LD_DEBUG=libs ./memcached -v

LD_DEBUG=libs /usr/local/mem1/bin/memcached -v 找到默认路径 /usr/lib/

sudo ln -s /usr/lib/libevent-2.0.so.5 /usr/lib64/libevent-2.0.so.5
sudo ldd /usr/local/bin/memcached

libevent-2.0.so.5 => /usr/lib64/libevent-2.0.so.5 (0x00002b83fcbcd000)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b83fce0e000)

libc.so.6 => /lib64/libc.so.6 (0x00002b83fd029000)

librt.so.1 => /lib64/librt.so.1 (0x00002b83fd381000)

/lib64/ld-linux-x86-64.so.2 (0x00002b83fc9b0000)


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