Cheat sheet
Slow Linux server checklist
The first minutes on a slow Linux server: load, CPU, memory, disk I/O, network and the kernel log, with what each number means.
- linux
- performance
- troubleshooting
troubleshooting
Cheat sheet
Network debugging cheat sheet
Find where a Linux network problem is: DNS, routing, ports, firewalls, TLS or packet loss, with dig, ip, ss, nc, mtr, curl and tcpdump.
- linux
- networking
- troubleshooting
Cheat sheet
Disk full cheat sheet
Why a Linux disk says it's full and how to fix it: find what uses the space, free space held by deleted files that are still open, and fix running out of inodes.
- linux
- storage
- troubleshooting