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Sysadmins are the unsung heroes of the technology world. The Opensource.com sysadmin article collection includes open source tools for admins, career-related advice, and handy how-to's.

Neon colorized Raspberry Pi cluster with LEGOs

Establish central control over your Raspberry Pis with Cockpit.
Someone wearing a hardhat and carrying code

Ancient remnants can create strange problems.
Lock

Telnet's lack of encryption makes OpenSSL a safer option for connecting to remote systems.
A rack of servers, blue background

There is no nefarious plan, just one to bring service management into the 21st century.
Woman sitting in front of her laptop

Systemd's speed and ease make it a popular way to manage modern Linux systems.
eight stones balancing

Load balancing distributes resources to where they're needed most at that moment.
People work on a computer server with devices

Name resolution and the ever-changing networking landscape.