安装memcached:error while loading shared libraries: libevent-1.4.so.2

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tayjq 2013-01-08 22:23:45 博主文章分类：linux

文章标签 安装 loading error shared 文章分类 Hive 大数据

安装完memcached,启动时报错如下:

/usr/local/memcached/bin/memcached: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory

首先确认是否已经安装了 libevent,Memcache用到了libevent这个库用于Socket的处理，所以需要安装libevent,默认是安装在 /usr/local/lib目录下的.

# ls /usr/local/lib/libevent-1.4.so.2

/usr/local/lib/libevent-1.4.so.2

我们要知道memcached去是哪些目录查找libevent动态库的,这里用这个命令

#LD_DEBUG=libs /usr/local/memcached/bin/memcached -v

find library=libevent-1.4.so.2 [0]; searching
search cache=/etc/ld.so.cache
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)
trying file=/lib64/tls/x86_64/libevent-1.4.so.2
trying file=/lib64/tls/libevent-1.4.so.2
trying file=/lib64/x86_64/libevent-1.4.so.2
trying file=/lib64/libevent-1.4.so.2
trying file=/usr/lib64/tls/x86_64/libevent-1.4.so.2
trying file=/usr/lib64/tls/libevent-1.4.so.2
trying file=/usr/lib64/x86_64/libevent-1.4.so.2
trying file=/usr/lib64/libevent-1.4.so.2

/usr/local/memcached/bin/memcached: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory

先来看一下 LD_DEBUG=libs 这个是什么意思

# LD_DEBUG=help ls
Valid options for the LD_DEBUG environment variable are:
 
libs display library search paths
reloc display relocation processing
files display progress for input file
symbols display symbol table processing
bindings display information about symbol binding
versions display version dependencies
all all previous options combined
statistics display relocation statistics
unused determined unused DSOs
help display this help message and exit
 
To direct the debugging output into a file instead of standard output
a filename can be specified using the LD_DEBUG_OUTPUT environment variable.