16 articles tagged with Troubleshooting.
A practical method for reading free, top, and ps correctly so you attribute Linux memory to a real cause instead of guessing.
Track down what owns a busy port, decide whether to kill it or rebind, and stop TIME_WAIT from blocking your restart.
When a process hits its file descriptor ceiling everything breaks at once; here is how to find the real limit and raise it correctly.
A field guide to reclaiming Linux disk space when df reports full but du can't find where the bytes actually went.
