Linux servers form the backbone of your business, until something goes wrong. Luckily, you can keep them safe and reliable without expert-level skills.
We all know about Windows, but what’s Linux? Like Windows, Linux is an operating system. In business, Linux powers behind-the-scenes processes. So, for example, it can be used to power customer databases, run websites, and manage inventory systems. These servers run non-stop, so regular maintenance is crucial. Much like a car engine, if your servers are neglected, it’s only a matter of time before a major breakdown.
Ophtek helps countless businesses, so we’re going to turn this week’s blog over to the art of looking after your Linux servers.
Getting the Best Out of Your Servers
If you want your servers to run like well-oiled machines, you need to implement these best maintenance practices:
- Stay Safe with Regular Updates: It’s critical that you keep your Linux servers updated and protected with patches. These patches fix bugs and close security holes. On a Linux system such as Ubuntu, all you have to do is run the command “sudo apt update” to check for new updates. Alternatively, you can turn on automatic security updates so they run regularly.
- Reliable Backups are Essential: The best way to protect against data disasters is through regular backups. Ophtek’s advice is to embrace the 3-2-1 rule. This involves keeping three copies of important files on two different types of storage, with one copy offsite or in the cloud. On Linux, you can use tools like rsync, borg, or tar to handle copying and encryption. To maximize the efficiency of your backup process, test it every few months to make sure they work.
- Keep Your Security Strong: Security should be your main priority. Always install a firewall – this acts as a gatekeeper who will only let the right traffic in. On Ubuntu, the simple UFW tool allows you to control which ports remain open and keeps everything else locked. For remote access, use SSH keys instead of regular passwords. They’re much harder to steal. And consider using Fail2Ban, a tool which blocks people who incorrectly guess passwords too many times.
- Monitor Server Health: You can prevent server outages by closely monitoring server health. Using Linux commands such as “df -h” will quickly show disk usage, while “free -h” gives you a report on available memory. Meanwhile, the “htop” command provides you with a clear real-time view of how your server is performing. This shows CPU, memory, and system load. And don’t forget, tools like Prometheus or Netdata can take care of real-time monitoring.
- Keep Good Documentation: Keep a set of simple notes on what your Linux servers consist of. This can include details on what software is installed, how the network is configured, and a list of any changes you’ve made to the infrastructure. This simple record can prove to be highly valuable when troubleshooting. Store the notes in a shared folder that’s easy to find and, of course, always print off a paper copy.
For more ways to secure and optimize your business technology, contact your local IT professionals.
