Lost sh and http

[Kevin K]

I had a curious failure of sh and http on Firmware Version:382.1_2. This is an RT-AC88U, and it has been a constant problem.

Attempts to hit the web GUI on the internal IP address would hang with no response, so I tried to ssh into the router. ssh would hang after showing the banner, but before showing a shell prompt. Curiously, I could still execute remote commands via ssh, such as: ssh -l root 192.168.1.1 tail -f /tmp/syslog.log

(I didn't see any relevant errors in the log.)

So I tried running "service restart_httpd" via ssh command line, and it reported Done, but the web GUI still did not respond. I tried "reboot" via ssh command line, and the router did not reboot. I eventually had to use the physical power button.

Any idea what went wrong and how I could have recovered without resorting to the power button?

 

[thelonelycoder]

Next time, check and save the output of df. It shows the disk space for all mounted file systems.

df -hT

This shows human readable numbers with some extra info.
I suspect your system ran out of free space and was unable to perform even simple tasks such as rebooting.