This documentation details how to install PHPCredLocker, but there are a few pre-requisites
So long as you satisfy these requirements, you should be ready to install. Grab PHPCredLocker from GitHub.
This is so simple to do, but I have to look it up every time I need it (not something that comes up regularly!);
When configuring a development server, you may find you have a need to ensure that emails will not be sent to any domain except those you explicitly permit (for example if you're using real-world data to do some testing, do you want to send all those users irrelevant emails?).
This documentation details how to configure Postfix on a Linux server to disregard any mail sent to domains that are not explicitly permitted.
We've all had it happen from time to time, suddenly sites on a server we manage appear to have slowed to a crawl. Having logged in you take a look at the running processes to find the cause. 9 times out of 10 it's something like a backup routine overrunning, so you kill the task and everything's OK again.
What do we do, though, if that's not the cause. It can sometimes be difficult to narrow down exactly what's causing it if the process list shows everything's currently OK. The slowdown may only kick in for a few seconds, but the perfectionist in us still needs to know what the cause is so we can mitigate it (if it's a particular page on a particular site, what happens if it suddenly gets a lot of hits?)
This documentation details ways to monitor usage without needing to spend all day looking at top. The main aim being to try and identify which process is responsible to then dig a little further.
I came up against this issue in Magento earlier.
Method Varien_Object::__toString() cannot take arguments
There's quite a lot of documentation about this on the net, so really this post is more for my own reference should I hit up against it again!
A lot of people have updated to the latest build of Kubuntu, but those with Intel graphics cards may be finding that KWin crashes regularly. This documentation details how to identify whether it's an issue with intel_do_flush_locked, what this means and how to resolve it until an official fix comes out.