可能是启动了apache 1.x了，现停掉httpd，然后在启动apache2
3、
/apache/conf/extra/httpd-ssl.conf:SSLSessionCache: \'shmcb\' session cache not supported (known names: ). Maybe you need to load the appropriate socache module (mod_socache_shmcb?).
解决办法：
打开httpd.conf，找到 LoadModule socache_shmcb_module modules/mod_socache_shmcb.so，把前面的注释去掉。
yum install httpd httpd-devel
3、安装zlib、sqlite和Subversion
#tar -xvzf zlib-1.2.8.tar.gz #cd zlib-1.2.8
#./configure --prefix=/usr/local/zlib #make&&make install
#tar zxf sqlite-autoconf-3080500.tar.gz #./configure --prefix=/usr/local/sqlite # make&&make install
安装neon
http://www.webdav.org/neon/neon-0.30.0.tar.gz
1.8版本之前的需要加neon，1.8版本之后弃用neon而改使用serf；
http://serf.googlecode.com/svn/src_releases/serf-1.3.7.tar.bz2 解决svn http://...的时候提示svn: Unrecognized URL scheme的错误。
#tar zxvf neon-0.30.0.tar.gz
./configure --prefix=/usr/local/neon --enable-shared --with-libs=/usr/local/openssl/lib --enable-webdav --with-ssl=openssl make
make install
#/usr/local/neon/bin/neon-config --version
http://jaist.dl.sourceforge.net/project/scons/scons/2.3.2/scons-2.3.2.tar.gz http://jaist.dl.sourceforge.net/project/scons/scons/2.3.2/scons-2.3.2-1.noarch.rpm 高版本serf需要安装scons，由scons安装serf # rpm -ivh expat-devel-2.0.1-11.el6_2.x86_64.rpm # tar -jxvf serf-1.3.7.tar.bz2
scons PREFIX=/usr/local/serf APR=/usr/local/apr APU=/usr/local/apr-util OPENSSL=/usr/local/openssl/bin
scons PREFIX=/usr/local/serf APR=/usr APU=/usr
