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Install fails silently and consumes too many resources
20 May 2007 at 6:43pm Last edited: 20 May 2007 7:33pm
When I visit the install.php page it says I can proceed with the installation, but if I click on either the 'Install SilverStripe' button or the 'Re-check requirements' button then the server takes a *long* time to respond. It eventually fails and displays a completely blank page.
Afterwards I am unable to SSH or SFTP into the server for 20 minutes. Apparently, to cope with DDOS attacks, my web host prevents a user from forking too many processes at once.
This is hard to diagnose, because I am locked out for 20 minutes every time I press the button. I think I've checked all the obvious things though:
Apache can create and write to the necessary files.
Maximum memory available is 128M.
I am using SilverStripe 2.0.1 (this is what it says in the silverstripe_version file).
The software versions listed in phpinfo are:
Apache/1.3.37
PHP 5.2.1
mcrypt 2.5.7
mbstring
GD 2.0.28 compatible
mysql 5.0.27
Also asp_tags is set to Off in php.ini.The only strange thing is that both phpinfo and the SilverStripe installer are unable to find mod_rewrite. I have tested that I can create rewrite rules using .htaccess files though.
So, how can I debug this problem? Should I add log messages to the installer to see where it gets stuck?
Are there any suitable debugging tools for PHP that I could use on a shared hosting account?
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Re: Install fails silently and consumes too many resources
20 May 2007 at 8:44pm
Is there some sort of error logs you can check, like the cpanel has on some hosts? Usually they report the problem right there and then...
Cheers,
Sean -
Re: Install fails silently and consumes too many resources
21 May 2007 at 2:13am
My host is using cPanel, but the only message appearing on the error log page is:
[Sun May 20 06:22:52 2007] [error] [client 62.56.123.70] File does not exist: /home/maxim/public_html/500.shtml
That might explain why I get the completely blank page. I'll try creating one and see if it gives some error information.
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Re: Install fails silently and consumes too many resources
21 May 2007 at 2:48am
That didn't help. I still receive a blank page, but now there are no errors appearing in the log.
btw - It takes about 2 minutes before the blank page appears. While it was loading I looked at the 'Server Status' page in cPanel, and I saw the Server Load increase by 10 times. When it finished, the load dropped right down again, so I think it is putting a lot of strain on the server.
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Re: Install fails silently and consumes too many resources
21 May 2007 at 9:29am
I don't think this is a problem with SilverStripe after all!
There seems to be something wrong with handling POST requests in any PHP5 script on my web host.
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Re: Install fails silently and consumes too many resources
21 May 2007 at 8:37pm
I've had that happen when PHP is set up as CGI instead of an apache module.
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Re: Install fails silently and consumes too many resources
21 May 2007 at 11:10pm
Hi Sam,
Yes, it is running as CGI. Does this mean I can't install SilverStripe?
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Re: Install fails silently and consumes too many resources
22 May 2007 at 8:07am
I'm sorry, but your host has simply set up a faulty PHP5 installation. If POST forms don't work, there's not much we can do!
I've never successfully set up PHP5/CGI to handle POST forms, but I imagine it can't be done.
Tell your host to fix their server, or check out http://doc.silverstripe.com/doku.php?id=suggested-web-hosts to find a new host!
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