var filesystem 100% can't login, need help
 

I have a Linux server with a var filesystem at 100% usage. I cannot get logged in to this machine to clear out files. Does anybody have any ideas short of a reboot to get logged into this system?

You should still be able to login even if the partition is full.

Nope, console just hangs.

something else should be wrong, u could try running commands (delete old logs or useless files) via ssh without logging in

I have a feeling some sort of blocking write may be preventing you from logging in. What I'd advice is to boot into rescue mode, mount the disk, and clear up space on /var and whatever else may be full.

That's what I would do as well. (Except replace "rescue mode" with "single-user mode"; either is fine. It may be that the rescue cd provides a more robust working environment.)

If it's ext[234], login as root. Unless you changed the default at mkfs, the reserved space should allow root login.

You can login from any other machine with ssh enabled(passwordless) user and clear the logs.

The last post was over 10 years ago - the original poster obviously no longer has an issue. Please don't revive long-dead threads for no useful purpose.

And to add to what syg00 said, this is also bad/incorrect. If you can't get logged in locally, what on earth makes you think you can log in over the network? It starts a shell, same as if you logged in locally. It's still going to try to access /var, and can't. Plain bad advice.