There has been a recent upgrade to WordPress over the past month. I am not sure if the “new features” in this release, or whether it was the one before have introduced some monitoring functions on the installation. WordPress continues to improve all of the time. There is a large network of people across the world who develop and test new releases.
Careful with that axe Eugene
I have some websites which are centrally controlled. I hit an update button and the websites update. It is not perfect, it sometimes stalls and often leaves a trail of error messages that I need to follow up. After coming back to the UK following a 4 week vacation, I opened the application and ran it and got a screen full of errors. It is fortunate I did not do this while I was on holiday. Starting at 4am on the 11th of November when I hit the button it took me 5 hours to go through 15 sites which had now broken. (I started at 4am because my head was still in a differnt time zone!).
What happened?
When I went around to look at each site, some or all of the updates had failed to update. The controlling program had reported that the websites were “unresponsive”. I logged into them and checked them, then ran the updates from within the website. I updated the plugins first. Then the template. After updating the plugins I received a message that “The site is experiencing technical difficulties……” It turns out there is also an email which outlines the technical difficulties. I had not seen this before. The message in the email turns out not to be directly related to the cause. In all cases the sites eventually came back online.
New Health Checking Features
It looks like I had triggered a recently introduced function in the wordpress core which monitors exceptions (crashes) of processes. It had identified something was wrong and halted the site. While it is good to have such features, it turns out they were not wholly reliable in identifying the problem.
It looks like an upgrade in some but not all cases may trigger this event to happen. What follows is a white screen for around 5-10 minutes with a message on it saying this website is experiencing technical difficulties. It will eventually clear down. If you initiate your own updates and see this, don’t panic. In all cases where this happened to me, it was resolvable. I have already taken action to upgrade the PHP Scripting language the websites run on to the latest version (a possible reason).
I am talking to the hosting company about this as well, as it is not entirely clear why it is happening. It may be because of some housekeeping function which has not triggered, and that needs to run before the website becomes stable again. It may just be a new “feature” in wordpress.
If you see a white screen at any time with just one line of text in it, send me a message and note the time, and what you did at the time. I will check it. These should only be transient events. All sites are set up to upgrade themselves, they usually do this without any problems, but they do not do it immediately the upgrade is detected.



