Here is my recommendation for quickly learning at least the basics of infrastructure: Hardware: If you can start with a cluster of at least 3 computers. If not a single computer for a hypervisor will work If not then VirtualBox or VMWorkstation will get you started with the absolute basics until you can get a hypervisor If you have a couple old computers or laptops (at least 8gb ram each) then start with those. ...
Problem: Let’s Encrypt certificate expired Time 1 minute Solution: All you have to do is run a single command: sudo /opt/bitnami/bncert-tool Enter the domain names of your website and press enter. I choose to enable HTTP -> HTTPS redirection, because I want users to use the https version of the site. I also went with www to non-www redirection because I already have a dns rule that points all www requests to the non-www address, so this should make no real difference but seems simpler to me. ...
Date: Oct. 06, 2021 Time: 1 hour Problem: My Dell Poweredge r510 abruptly shutdown, and would not power back on. How the problem was resolved: Was the problem resolved? No, the initial problem was fixed, the server booted and all checks were good, but it failed again after a month. Update 2024: The issue seems to persist, occasionally powering off abruptly. It happens about once every few months. ...