Questions & Answers
22
votes
1
answers
1428
views
systemctl service failing to start - debugging steps
My custom service fails to start with systemctl. It just says "failed" without useful information. How can I debug this?
22
votes
1
answers
364
views
How to fix "No space left on device" error on Linux
My server shows "No space left on device" error but df -h shows 40% free space. What is causing this and how to fix it?
47
votes
1
answers
1629
views
SSH connection refused - how to troubleshoot
I cannot connect to my server via SSH. I get "Connection refused" error. The server is running and I can ping it. What could be wrong?
8
votes
1
answers
289
views
How to fix "Permission denied" when running sudo commands
I'm getting "Permission denied" errors when trying to run commands with sudo. The error says my user is not in the sudoers file. How can I fix this?