Finding an expired certificate

I had a strange issue today regarding a particular expired certificate on a webserver. The problem was that the server in question was an nginx reverse proxy that proxied many domains and contained many hundreds of certificates. For various, um, “technical reasons”, I could not locate the exact cert that was bad. I only knew […]

Creating a simple, quick Borg backup

Here is how to create a simple borg backup. Something more along the lines of a zip file than a careful backup system. I’m using this method for long term storage. The primary benefits are de-duplication and compression. Again, to clarify – these are not backups meant to be updated each day/week/month. These are simply […]

Slow login and su on Centos 7 (not an ssh or dns problem)

I had a particular Centos 8 box that had very slow logins but over ssh but also using su. The issue was not with dns and ssh. I finally found the problem – or at least the fix (related to systemd, sigh): The server was running inside of openvz so perhaps there were resource issues […]