在安装之前，首先确认我们安装了make、gcc等模块。
yum install make gcc #安装make和gcc
接着，执行下列命令安装eAccelerator。
wget http://bart.eaccelerator.net/source/0.9.6/eaccelerator-0.9.6.tar.bz2 #下载源码
tar xjf eaccelerator-0.9.6.tar.bz2 #解压
cd eaccelerator-0.9.6 进入目录
/usr/bin/phpize
./configure –enable-eaccelerator=shared –with-php-config=/usr/bin/php-config
make
make install
好了，等待安装完成，建立缓存文件夹。
mkdir /tmp/eaccelerator
chmod 777 /tmp/eaccelerator
接下来，我们要建立一个eaccelerator.ini在/etc/php.d/目录，并加入如下内容，根据虚拟架构的不同，加入的内容也不同。
1.OPENVZ
extension="eaccelerator.so"
eaccelerator.shm_size="0"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.log_file = "/var/log/eaccelerator_log"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
eaccelerator.keys = "disk_only"
eaccelerator.sessions = "disk_only"
eaccelerator.content = "disk_only"
2.Xen
extension="eaccelerator.so"
eaccelerator.shm_size="64"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.log_file = "/var/log/eaccelerator_log"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
eaccelerator.keys = "shm_and_disk"
eaccelerator.sessions = "shm_and_disk"
eaccelerator.content = "shm_and_disk"
做完以上之后，kloxo安装eAccelerator就算完成了，发现大约占用20-30MB内存，因为我优化过的kloxo占用55MB左右，安装了eAccelerator之后大约占用80MB了。
