Yes, system upgrade is the main maintenance task. With some monitoring, security updates can be automated but after system upgrades I must check manually that everything is working. E.g. incompatible configuration files, changes in 3rd party repos, errors that surface one week after the upgrade, ...
There are also smaller maintenance tasks that are tipically ad-hoc solutions to unsolved problems or responses to monitoring alerts. One of this ad-hoc routines was checking that logs do not grow too large, which used to be a problem in my first systemd centos, although not anymore.
PD: thanks for the bluefin read, it made me discover devpod/devcontainer as an interesting alternative to compose files
There are also smaller maintenance tasks that are tipically ad-hoc solutions to unsolved problems or responses to monitoring alerts. One of this ad-hoc routines was checking that logs do not grow too large, which used to be a problem in my first systemd centos, although not anymore.
PD: thanks for the bluefin read, it made me discover devpod/devcontainer as an interesting alternative to compose files