This is related to the systemd socket activation patch we have in
openssh, and specifically that it does not correctly handle the re-
execution logic of sshd. I am working on a fix for this.
** Changed in: openssh (Ubuntu)
Status: New => Triaged
** Changed in: openssh (Ubuntu)
Importance: Undecided => Medium
** Changed in: openssh (Ubuntu)
Assignee: (unassigned) => Nick Rosbrook (enr0n)
** Also affects: openssh (Ubuntu Kinetic)
Importance: Undecided
Status: New
** Changed in: openssh (Ubuntu Kinetic)
Status: New => Triaged
** Changed in: openssh (Ubuntu Kinetic)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2011458
Title:
ssh fails to rebind when it is killed with -HUP
Status in openssh package in Ubuntu:
Triaged
Status in openssh source package in Kinetic:
Triaged
Bug description:
In kinetic and lunar gce images we are facing an issue when ssh is being
killed with -HUP
SSH is failing to rebind port 22. It is not failing in other previous
systems.
It can be reproduced by running
# pkill -o -HUP sshd || true
# journalctl -n 20
Mar 13 14:58:52 mar131454-025105 sshd[1371]: Received SIGHUP; restarting.
Mar 13 14:58:52 mar131454-025105 sshd[1371]: error: Bind to port 22 on
0.0.0.0 failed: Address already in use.
Mar 13 14:58:52 mar131454-025105 sshd[1371]: error: Bind to port 22 on ::
failed: Address already in use.
Mar 13 14:58:52 mar131454-025105 sshd[1371]: fatal: Cannot bind any address.
Mar 13 14:58:52 mar131454-025105 systemd[1]: ssh.service: Main process
exited, code=exited, status=255/EXCEPTION
Mar 13 14:58:52 mar131454-025105 systemd[1]: ssh.service: Failed with result
'exit-code'.
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