centsOs（Linux） memcache 安装教程

安装Linux：centOs5.4安装libevent库[java] view plaincopy    cd /usr/local/src      wget http://monkey.org/~provos/libevent-1.3b.tar.gz      tar zxvf libevent-1.3b.tar.gz      cd libevent-1.3b      ./configure      make && make install  安装成功安装memcache[java] view plaincopy    cd /usr/local/src      wget http://danga.com/memcached/dist/memcached-1.2.5.tar.gz      tar zxvf memcached-1.2.5.tar.gz      cd memcached-1.2.5      ./configure      make && make install  启动[java] view plaincopy    cd  usr/local/bin      bin] # memcached –h      出错      memcached: error while loading shared libraries: libevent-1.3b.so.1: cannot open shared object file: No such file or directory  google解决方法: http://bbs.yiwz.net/archiver/?tid-86.html则运行 LD_DUBUG=libs 就可以知道memcached启动时库的加载路径。具体如下[java] view plaincopy    [root@bogon  usr/local/bin]# LD_DEBUG=libs  memcached –v            5112:     find library=libevent-1.3b.so.1 [0]; searching            5112:      search cache=/etc/ld.so.cache            5112:      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)            5112:       trying file=/lib/tls/i686/sse2/libevent-1.3b.so.1            5112:       trying file=/lib/tls/i686/libevent-1.3b.so.1            5112:       trying file=/lib/tls/sse2/libevent-1.3b.so.1            5112:       trying file=/lib/tls/libevent-1.3b.so.1            5112:       trying file=/lib/i686/sse2/libevent-1.3b.so.1            5112:       trying file=/lib/i686/libevent-1.3b.so.1            5112:       trying file=/lib/sse2/libevent-1.3b.so.1            5112:       trying file=/lib/libevent-1.3b.so.1            5112:       trying file=/usr/lib/tls/i686/sse2/libevent-1.3b.so.1            5112:       trying file=/usr/lib/tls/i686/libevent-1.3b.so.1            5112:       trying file=/usr/lib/tls/sse2/libevent-1.3b.so.1            5112:       trying file=/usr/lib/tls/libevent-1.3b.so.1            5112:       trying file=/usr/lib/i686/sse2/libevent-1.3b.so.1            5112:       trying file=/usr/lib/i686/libevent-1.3b.so.1            5112:       trying file=/usr/lib/sse2/libevent-1.3b.so.1            5112:       trying file=/usr/lib/libevent-1.3b.so.1  然后给libevent-1.3b.so.1建立一个链接：[java] view plaincopy    [root@bogon ~]# sudo ln -s /usr/local/lib/libevent-1.3b.so.1 /lib/libevent-1.3b.so.1  检查是否建立成功[java] view plaincopy    [root@bogon ~]# ls -al /lib|grep libevent      lrwxrwxrwx  1 root root      33 Aug 25 19:52 libevent-1.3b.so.1 -> /usr/local/lib/libevent-1.3b.so.1  此时在[java] view plaincopy    bin] # memcached –h  [java] view plaincopy    memcached 1.2.5      -p <num>      TCP port number to listen on (default: 11211)      -U <num>      UDP port number to listen on (default: 0, off)      -s <file>     unix socket path to listen on (disables network support)      -a <mask>     access mask for unix socket, in octal (default 0700)      -l <ip_addr>  interface to listen on, default is INDRR_ANY      -d            run as a daemon      -r            maximize core file limit      -u <username> assume identity of <username> (only when run as root)      -m <num>      max memory to use for items in megabytes, default is 64 MB      -M            return error on memory exhausted (rather than removing items)      -c <num>      max simultaneous connections, default is 1024      -k            lock down all paged memory.  Note that there is a                    limit on how much memory you may lock.  Trying to                    allocate more than that would fail, so be sure you                    set the limit correctly for the user you started                    the daemon with (not for -u <username> user;                    under sh this is done with 'ulimit -S -l NUM_KB').      -v            verbose (print errors/warnings while in event loop)      -vv           very verbose (also print client commands/reponses)      -h            print this help and exit      -i            print memcached and libevent license      -b            run a managed instanced (mnemonic: buckets)      -P <file>     save PID in <file>, only used with -d option      -f <factor>   chunk size growth factor, default 1.25      -n <bytes>    minimum space allocated for key+value+flags, default 48  现在memcache成功搞定默认情况下memcached安装到/usr/local/bin下。启动：[java] view plaincopy    [root@bogon bin]# memcached -d -m 128 -u root -p 11211  检查是否已经启动[java] view plaincopy    [root@bogon bin]#  telnet 127.0.0.1 11211      Trying 127.0.0.1...      Connected to localhost.localdomain (127.0.0.1).      Escape character is '^]'.  这里使用的memcached启动选项的内容如下。选项说明p 使用的TCP端口。默认为11211m 最大内存大小。默认为64Mvv 用very vrebose模式启动，调试信息和错误输出到控制台d 作为daemon在后台启动查看memcached的内部状态[java] view plaincopy    [root@bogon bin]# cd /usr/local/bin      [root@bogon bin]# telnet 127.0.0.1 11211      Trying 127.0.0.1...      Connected to localhost.localdomain (127.0.0.1).      Escape character is '^]'.      stats      STAT pid 6779      STAT uptime 14217      STAT time 1314343512      STAT version 1.2.5      STAT pointer_size 32      STAT rusage_user 0.002999      STAT rusage_system 0.027995      STAT curr_items 0      STAT total_items 0      STAT bytes 0      STAT curr_connections 3      STAT total_connections 4      STAT connection_structures 4      STAT cmd_get 0      STAT cmd_set 0      STAT get_hits 0      STAT get_misses 0      STAT evictions 0      STAT bytes_read 56      STAT bytes_written 482      STAT limit_maxbytes 134217728      STAT threads 1      END      Quit  到此为止说明你的memcached安装成功了    上一篇    NoSQL数据库：Redis适用场景及产品定位    下一篇    探讨read的返回值的三种情况