I installed Virtualmin on my server. However, after 4 weeks, I realize that Ubuntu's updates/upgrades are very frequent. Every time I run the updates/upgrades, the server stops working properly. I understand the updates/upgrades are essential part of the development and security issues. However, I'd like to know if there is a way to keep websites up and running while Ubuntu updates (setting up a mirror server or something).
Thanks in advance for your help.