Security updates are important. But sometimes, automatic updates aren't a good idea.
- [Instructor] It's important the servers be protected,…so it's usually a very good idea to make sure…that a server is able to get and install any important…security updates as they become available.…There are exceptions to this, though, so be sure…upgrades won't interfere with your production systems.…You may actually want to turn off automatic updates…on critical or public-facing services and schedule…downtime for timely manual updates instead as needed.…Ubuntu server comes with a package called…unattended-upgrades installed, which sets…some period tasks that tell the apt…package manager to get an updated list…of packages and do an unattended-upgrade.…
This won't install the latest version…of all the installed packages, just the ones…considered important or security updates.…Usually this works just fine, but if…for some reason something you're using…is extremely dependent on a particular version…of a package you'll want to pin that package version,…or hold it back, with apt-mark hold,…and of course you should always document whatever…
- Installing Ubuntu Server
- Configuring remote access with SSH
- Configuring the firewall
- Configuring networking with Netplan
- Managing users
- Configuring for scale
- Securing an HTTP server with TLS
- Hosting an application
- Setting up a forwarding DNS server
- Sending email with Postfix
Skill Level Beginner
Lab setup1m 26s
1. Ubuntu Server
2. Securing and Monitoring Your Server
3. Configuring and Managing the Server
4. Exploring Common Services
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