在mysql-cluster中,如果想把某个SQL节点升级为Web服务器,那么我们需要在该节点上安装php以及php对mysql的扩展模块,但是会出现
在mysql-cluster中,如果想把某个SQL节点升级为Web服务器,那么我们需要在该节点上安装php以及php对mysql的扩展模块,,但是会出现冲突。
安装php的命令为:# php53 默认情况下会安装依赖包:php53-cli、php53-common
安装mysql扩展的命令为:# php53-mysql 此时会出现冲突,如果采用强制安装的形式是否会影响使用并没有测试;
通过在一台已经配置好扩展模块的机器(不是集群中的SQL节点)上查看安装目录:
# rpm -ql php53-mysql-5.3.3-13.el5_8
提示结果:
/etc/php.d/mysql.ini
/etc/php.d/mysqli.ini
/etc/php.d/pdo_mysql.ini
/usr/lib64/php/modules/mysql.so
/usr/lib64/php/modules/mysqli.so
/usr/lib64/php/modules/pdo_mysql.so
只是几个相关文件,如果把这些文件拷贝到集群中sql节点的相应目录下,是不是该功能即可发挥出来。
# rpm -ql php53-5.3.3-13.el5_8
/etc/httpd/conf.d/php.conf
/usr/lib64/httpd/modules/libphp5.so
/var/lib/php/session
/var/www/icons/php.gif
在Linux集群环境下的SQL节点上如果想使用mysql扩展,则有尝试办法:
# cd /etc/ # mkdir php.d # cd php.d # vi apc.ini.rpmsave
在apc.ini.rpmsave这个文件中输入如下内容:
; Enable apc extension module
extension = apc.so
; Options for the apc module
apc.enabled=1
apc.shm_segments=1
apc.optimization=0
apc.shm_size=512
apc.ttl=7200
apc.user_ttl=7200
apc.num_files_hint=1024
apc.mmap_file_mask=/tmp/apc.XXXXXX
apc.enable_cli=1
apc.cache_by_default=1;
拷贝mysql.ini、mysqli.ini、pdo.ini、pdo_mysql.ini、mysql.so、mysqli.so、pdo.so、pdo_mysql.so、apc.so到相应目录。

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