Memcached和Magent简介及安装

• memcached的安装

1. 安装libevent

[[email protected] ~]# wget https://cloud.github.com/downloads/libevent/libevent/libevent-2.0.19-stable.tar.gz
[[email protected] ~]# tar zxvf libevent-2.0.19-stable.tar.gz 
[[email protected] ~]# cd libevent-2.0.19-stable
[[email protected] libevent-2.0.19-stable]# ./configure --prefix=/usr/
[[email protected] libevent-2.0.19-stable]# make && make install

2.安装memcached

[[email protected] ~]# wget http://www.memcached.org/files/memcached-1.4.22.tar.gz  
[[email protected] ~]# tar zxvf memcached-1.4.22.tar.gz
[[email protected] memcached-1.4.22]# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/
[[email protected] memcached-1.4.22]# make && make install

• magent的安装

  magent是一款开源的Memcached代理服务器软件，其项目网址为：

[[email protected] ~]# tar zxvf magent-0.6.tar.gz
[[email protected] ~]# mkdir /usr/local/magent
[[email protected] magent]# tar zxvf magent-0.6.tar.gz 
ketama.c
ketama.h
magent.c
Makefile 
[[email protected] magent]# make 
gcc -Wall -g -O2 -I/usr/local/include -m64 -c -o magent.o magent.c
magent.c: In function ‘writev_list’:
magent.c:729: error: ‘SSIZE_MAX’ undeclared (first use in this function)
magent.c:729: error: (Each undeclared identifier is reported only once
magent.c:729: error: for each function it appears in.)
make: *** [magent.o] Error 1
解决方法:
[[email protected] magent]# vim ketama.h
#ifndef SSIZE_MAX
#define SSIZE_MAX      32767
#endif
#ifndef _KETAMA_H
#define _KETAMA_H

struct dot {
        unsigned int point;
        int srvid;
};

struct ketama {
        unsigned int numpoints;
        struct dot *dot;

        int count;
        char **name;
        int *weight;
        int totalweight;
};

int create_ketama(struct ketama *, int);
void free_ketama(struct ketama *);
int get_server(struct ketama *, const char *);
#endif

[[email protected] magent]# make
gcc -Wall -g -O2 -I/usr/local/include -m64 -o magent magent.o ketama.o /usr/lib64/libevent.a /usr/lib64/libm.a 
gcc: /usr/lib64/libevent.a: No such file or directory
gcc: /usr/lib64/libm.a: No such file or directory
make: *** [magent] Error 1
解决方案:
[[email protected] magent]# ln -svf /usr/lib/libevent* /usr/lib64/
`/usr/lib64/libevent-2.0.so.5‘ -> `/usr/lib/libevent-2.0.so.5‘
`/usr/lib64/libevent-2.0.so.5.1.7‘ -> `/usr/lib/libevent-2.0.so.5.1.7‘
`/usr/lib64/libevent.a‘ -> `/usr/lib/libevent.a‘
`/usr/lib64/libevent_core-2.0.so.5‘ -> `/usr/lib/libevent_core-2.0.so.5‘
`/usr/lib64/libevent_core-2.0.so.5.1.7‘ -> `/usr/lib/libevent_core-2.0.so.5.1.7‘
`/usr/lib64/libevent_core.a‘ -> `/usr/lib/libevent_core.a‘
`/usr/lib64/libevent_core.la‘ -> `/usr/lib/libevent_core.la‘
`/usr/lib64/libevent_core.so‘ -> `/usr/lib/libevent_core.so‘
`/usr/lib64/libevent_extra-2.0.so.5‘ -> `/usr/lib/libevent_extra-2.0.so.5‘
`/usr/lib64/libevent_extra-2.0.so.5.1.7‘ -> `/usr/lib/libevent_extra-2.0.so.5.1.7‘
`/usr/lib64/libevent_extra.a‘ -> `/usr/lib/libevent_extra.a‘
`/usr/lib64/libevent_extra.la‘ -> `/usr/lib/libevent_extra.la‘
`/usr/lib64/libevent_extra.so‘ -> `/usr/lib/libevent_extra.so‘
`/usr/lib64/libevent.la‘ -> `/usr/lib/libevent.la‘
`/usr/lib64/libevent_pthreads-2.0.so.5‘ -> `/usr/lib/libevent_pthreads-2.0.so.5‘
`/usr/lib64/libevent_pthreads-2.0.so.5.1.7‘ -> `/usr/lib/libevent_pthreads-2.0.so.5.1.7‘
`/usr/lib64/libevent_pthreads.a‘ -> `/usr/lib/libevent_pthreads.a‘
`/usr/lib64/libevent_pthreads.la‘ -> `/usr/lib/libevent_pthreads.la‘
`/usr/lib64/libevent_pthreads.so‘ -> `/usr/lib/libevent_pthreads.so‘
`/usr/lib64/libevent.so‘ -> `/usr/lib/libevent.so‘

[[email protected] magent]# make
gcc -Wall -g -O2 -I/usr/local/include -m64 -o magent magent.o ketama.o /usr/lib64/libevent.a /usr/lib64/libm.a 
gcc: /usr/lib64/libm.a: No such file or directory
make: *** [magent] Error 1
解决方案:
如果是64bit的系统则不会在/usr/lib64/libm.a 生成，如果是32bit即会有
[[email protected] magent]# yum install glibc glibc-devel
[[email protected] magent]# cp /usr/lib64/libm.so /usr/lib64/libm.a

[[email protected] magent]# make
gcc -Wall -g -O2 -I/usr/local/include -m64 -o magent magent.o ketama.o /usr/lib64/libevent.a /usr/lib64/libm.a 
/usr/lib64/libevent.a(event.o): In function `gettime‘:
/usr/local/src/libevent-2.0.19-stable/event.c:366: undefined reference to `clock_gettime‘
/usr/lib64/libevent.a(event.o): In function `detect_monotonic‘:
/usr/local/src/libevent-2.0.19-stable/event.c:336: undefined reference to `clock_gettime‘
collect2: ld returned 1 exit status
make: *** [magent] Error 1
解决方案:
[[email protected] magent]# vim Makefile
CFLAGS = -Wall -g -O2 -I/usr/local/include $(M64)
改为:
CFLAGS = -lrt -Wall -g -O2 -I/usr/local/include $(M64)
[[email protected] magent]# make
gcc -lrt -Wall -g -O2 -I/usr/local/include -m64 -o magent magent.o ketama.o /usr/lib64/libevent.a /usr/lib64/libm.a
[[email protected] magent]# ls    终于成功了- -!
ketama.c  ketama.h  ketama.o  magent  magent-0.6.tar.gz  magent.c  magent.o  Makefile
[[email protected] magent]# cp magent /bin/