Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: systemd (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1656237
Title:
Shutdown/reboot hangs forever if an autossh process is started by
rc.local
Status in systemd package in Ubuntu:
Confirmed
Bug description:
If an autossh process is started by /etc/rc.local, a xenial system is
no longer able to shut down. It seems to hang forever, not just for a
few minutes.
Repro steps:
As root:
# Set up an autossh tunnel (in this example, from localhost to localhost):
apt-get install autossh openssh-server
ssh-keygen
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
chmod 0600 ~/.ssh/authorized_keys
ssh root@localhost true
"yes", accept the fingerprint
# Test that autossh works:
autossh -f -L 127.0.0.2:22:127.0.0.1:22 root@localhost -N
ps auxw | grep autossh
autossh should be listed
# Add to /etc/rc.local before exit line:
autossh -f -L 127.0.0.2:22:127.0.0.1:22 root@localhost -N &
# Enable rc-local service if necessary:
systemctl enable rc-local.service
Reboot.
After booted into system, `shutdown -r now`. Observe that systemd
always hangs forever during shutdown.
# lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
# dpkg -l | grep systemd
ii libpam-systemd:amd64 229-4ubuntu13 amd64 system and service
manager - PAM module
ii libsystemd0:amd64 229-4ubuntu13 amd64 systemd utility
library
ii libsystemd0:i386 229-4ubuntu13 i386 systemd utility
library
ii systemd 229-4ubuntu13 amd64 system and service
manager
ii systemd-sysv 229-4ubuntu13 amd64 system and service
manager - SysV links
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