There are a number of MPM modules (Multi-Processing Modules), but by far the most widely used (at least on *nix platforms) are the three main ones: prefork, worker, and event. Essentially, they represent the evolution of the Apache web server, and the different ways that the server has been built to handle HTTP requests within … Read more
Times change and so do best practices. The current best way to do this is to run systemctl edit myservice, which will create an override file for you or let you edit an existing one. In normal installations this will create a directory /etc/systemd/system/myservice.service.d, and inside that directory create a file whose name ends in … Read more
Here is Wikipedia‘s handy chart of the pursuit of nines: Interestingly, only 3 of the top 20 websites were able to achieve the mythical 5 nines or 99.999% uptime in 2007. They were Yahoo, AOL, and Comcast. In the first 4 months of 2008, some of the most popular social networks, didn’t even come close … Read more
The general consensus seems to be that the answer to your question comes in two parts: How do we find the source of the funny burning smell? You’ve got the “How” pretty well nailed down: The “Sniff Test” Look for visible smoke/haze Walk the room with a thermal (IR) camera to find hot spots Check … Read more
It’s hard to give specific advice from what you’ve posted here but I do have some generic advice based on a post I wrote ages ago back when I could still be bothered to blog. Don’t Panic First things first, there are no “quick fixes” other than restoring your system from a backup taken prior … Read more
You can’t ping ports, as Ping is using ICMP which is an internet layer protocol that doesn’t have ports. Ports belong to the transport layer protocols like TCP and UDP. However, you could use nmap to see whether ports are open or not nmap -p 80 example.com Edit: As flokra mentioned, nmap is more than … Read more
SSL has been around for long enough you’d think that there would be agreed upon container formats. And you’re right, there are. Too many standards as it happens. In the end, all of these are different ways to encode Abstract Syntax Notation 1 (ASN.1) formatted data — which happens to be the format x509 certificates … Read more
Reset counter with jQuery [closed]
How to check, if user commented before, on comment_post action?
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