GoranTheGreat
Cadet
- Joined
- Aug 7, 2017
- Messages
- 9
I'm running a FreeNAS 11 VM under ESXi for some testing before I hopefully can deploy this for production. I have SSH enabled with PubkeyAuthentication and there's no problem logging in as a regular user, but after I log out, there are sshd processes left behind running, and they consume a lot of CPU as well.
Typically, after a single login-logout as "myuser" (real username masked), I see this in top:
Any tips as to how to investigate this is much appreciated; log files to look at, sshd settings, whatever.
The FreeNAS installation is updated and verified. I can produce this behavior from multiple ssh clients. My primary ssh client is OpenSSH_7.3p1, LibreSSL 2.4.1 on Mac OS X 10.12, but also an older Windows/Cygwin client causes left-behind sshd processes.
Typically, after a single login-logout as "myuser" (real username masked), I see this in top:
Code:
77 processes: 2 running, 74 sleeping, 1 zombie CPU: 4.3% user, 0.0% nice, 20.2% system, 0.0% interrupt, 75.5% idle Mem: 132M Active, 2581M Inact, 5659M Wired, 3743M Free ARC: 4582M Total, 2312M MFU, 2011M MRU, 324K Anon, 35M Header, 224M Other Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 91133 myuser 1 83 0 82852K 7332K CPU1 1 0:12 58.47% sshd 91126 myuser 1 20 0 24276K 3740K CPU0 0 0:00 0.07% top 2140 root 2 20 0 65128K 11548K select 1 3:47 0.05% vmtoolsd 73078 root 2 20 0 127M 33588K select 1 2:12 0.02% python3.6 1268 root 1 20 0 9564K 5244K select 1 0:47 0.01% devd ...
Any tips as to how to investigate this is much appreciated; log files to look at, sshd settings, whatever.
The FreeNAS installation is updated and verified. I can produce this behavior from multiple ssh clients. My primary ssh client is OpenSSH_7.3p1, LibreSSL 2.4.1 on Mac OS X 10.12, but also an older Windows/Cygwin client causes left-behind sshd processes.