Resolved Error_log ate all disk space, rotation and delete fails.

[swaan]

So an error_log file managed to get so large in a short time that it ate up almost all the disk space. It is 80% of the partition capacity so rotation fails (because it wants to create a copy first and runs out of disk space?). I tried to shut down all services to rm the file but it gets recreated with the rotation every time. I also tried creating a new error_log file (mv, touch) but it too gets overwritten. What now?

Running on Ubuntu 16 LTS

 

[swaan]

fixed it:

truncate -s 0 error_log

then ran the logrotate manually. Hope this procedure is ok?