I have a file that was deleted, but is still held open by a program. I found the inode number using lsof. How can I create a hard link back to that inode?
I have a very low traffic site running on nginx, with 4 workers, 1024 connections each. Every several hours I start seeing in the error log "1024 worker_connections are not enough", and my site slows ...
Prologue: On a number of machines, which happen to act as NFS clients, netstat reports two ports that are open with no PID listed for an associated daemon. Ordinarily this might be a bit concerning. ...
So I am running lsof -i | wc -l periodically and it is telling me that out of 420 lines, between 240 and 255 are in CLOSE_WAIT state. How does TCP connections enter this state ? Should I be worried ...