memcachedb麻烦一些,虽然有为opensuse弄好的包(memcachedb-1.0.4-2.1.i586),但由于RHEL5.5的C++库太老,没办法安装,只能从源代码编译起了。我的安装基本上基于一个很干净的RHEL5.5。
安装的过程可以参考 http://www.auu.name/186/index.html。稍有不同的是,libevent这个包,RHEL5.5里的已经足够了,因此要做的就是编译安装db4.7和memcachedb1.2.1beta。注意,在装了前者之后,需要执行echo "/usr/local/BerkeleyDB.4.7/lib/" >> /etc/ld.so.conf.d/db4.7.ld.so.conf和ldconfig,才能让memcachedb找到新版的berkeley db。
RHEL5.5事实上也带db4的,不过版本较老,为4.3,memcachedb1.2.x不能够支持。当我install了4.7之后,发现这也不会有冲突。因为install的目标目录是/usr/local/BerkeleyDB.4.7/,而系统rpm包包含的db4有这些内容:
/lib/libdb-4.3.so /usr/lib/libdb-4.3.so /usr/lib/libdb_cxx-4.3.so /usr/share/doc/db4-4.3.29 /usr/share/doc/db4-4.3.29/LICENSE /usr/share/doc/db4-4.3.29/README
两者是可以共存的:-)
编译好了memcachedb,要弄一个/etc/init.d/memcachedb脚本,让service将memcachedb管理起来:
#! /bin/sh # # chkconfig: - 55 45 # description: The memcachedb daemon is a network memory cache service backing by berkeley db. # processname: memcachedb # config: /etc/sysconfig/memcachedb # pidfile: /var/run/memcachedb/memcachedb.pid # Standard LSB functions #. /lib/lsb/init-functions # Source function library. . /etc/init.d/functions PORT=22222 USER=root OPTIONS="" DATADIR=/var/mcdb_data PROCESSID=/var/run/memcachedb/memcachedb.pid PROCESSIDDIR=`dirname $PROCESSID` if [ -f /etc/sysconfig/memcachedb ];then . /etc/sysconfig/memcachedb fi # Check that networking is up. . /etc/sysconfig/network if [ "$NETWORKING" = "no" ] then exit 0 fi RETVAL=0 prog="memcachedb" start () { echo -n $"Starting $prog: " if [ ! -d $PROCESSIDDIR ]; then mkdir $PROCESSIDDIR -p fi # insure that /var/run/memcachedb has proper permissions if [ "`stat -c %U $PROCESSIDDIR`" != "$USER" ]; then chown $USER $PROCESSIDDIR fi daemon --pidfile $PROCESSID /usr/local/bin/memcachedb -d -p $PORT -r -u $USER -H $DATADIR -P $PROCESSID $OPTIONS RETVAL=$? echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcachedb } stop () { echo -n $"Stopping $prog: " killproc -p $PROCESSID /usr/local/bin/memcachedb RETVAL=$? echo if [ $RETVAL -eq 0 ] ; then rm -f /var/lock/subsys/memcachedb rm -f $PROCESSID fi } restart () { stop start } # See how we were called. case "$1" in start) start ;; stop) stop ;; status) status /usr/local/bin/memcachedb ;; restart|reload|force-reload) restart ;; condrestart) [ -f /var/lock/subsys/memcachedb ] && restart || : ;; *) echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}" exit 1 esac exit $?
同时提供在/etc/sysconfig/下的配置文件memcachedb
PORT="22222" USER="root" OPTIONS="" DATADIR="/var/mcdb_data" PROCESSID="/var/run/memcachedb/memcachedb.pid"
编译了一个32位的memcachedb RPM包,以供同好参考。