Our team of 6 sysadmins manages:
- DNS appliances, storage appliances, NTP appliances,
- hypervisors, Dev/stage/prod k8s clusters, some other k8s clusters
- dev/prod Elasticsearch/Logstash/Kibana clusters
- internal GitLab, Jira, Confluence, nautobot, OpenDCIM, a deprecated Twiki
- several internal custom apps
- Probably more I am forgetting.
Nothing gets patched consistently. Everything is neglected to a certain degree.
Every month we had a recipe to spin up a new instance of the Github appliance, and import the most recent backup into it.
A lot of systems do tend to get a little neglected over time, and of course different organizations have different priorities, but I insisted on this because I figured for that particular company the Github instance was one of the most critical components - if it is down people can't work.