WDCP installation because it has been dynamically from the network to obtain the installation source, so often there will be such an unstable situation, before using a good suddenly one day to find all kinds of strange problems have appeared.
Previously on the centos6.9 use of WDCP has been no problem, now simply install are not installed.
Think for a moment, get the server because of habit, the first login to CentOS directly yum-y update, from CentOS 6.4 upgrade to centos6.9.
And coincidentally, several servers that night with the same method installed WDCP failed to compile php5.3 and terminated.
Later found a way to dog blood:
In centos6.4, compile and install good WDCP, you can compile PHP normally, no problem, then perform yum-y update, smooth upgrade to centos6.9, all normal.
Do not upgrade the operating system to CentOS 6.9 before installing WDCP, which may not be very well supported.
It also reminds me of a very depressing thing about configuring HP array cards, from centos6.6, centos6.7, CentOS 6.8, CentOS 6.9, centos7.0, CentOS 7.1, CentOS 7.3,HP each version of the CentOS is configured with an array card driver. In other words, if you are using the centos6.6 system, configure the array card, and then you yum-y update to CentOS 6.9, then I am sorry, reboot after the system will not be due to the failure of the array card driver.
It's really a waste of time to climb a hole.