A brief story about hunting down the issue that caused SIP packets to show out of order in a call logging system.
I've been dealing with a service recently that, at least for a while longer, needs to log a serious amount of data. We are talking hundreds of thousands of lines every hour. The challenge was getting systemd to keep more than a days worth of data at this rate.
New year, new (sysadmin) me, or something like that. Step one was to fix a failing backup jobs on my Synology NAS. As usual, things escalated.
Every couple of years I rebuild my main development VPS for some reason or another. Months ago I realised that I had gradually worked my way up the DigitalOcean spec list but was now using a fraction of the resources. I held off rebuilding too soon though as I was relying on the IP address assigned for access to a particular work network. However, now that situation is resolved with something far less brittle it's time to get on with it.
Is there a way to use variables in an Apache config file? Specifically for the port number in a `VirtualHost` block? The answer is, kind of...