bionic:
ubuntu@lp1839290-b:~$ dpkg -l systemd|grep systemd
ii systemd 237-3ubuntu10.39 amd64 system and service manager
ubuntu@lp1839290-b:~$ systemctl cat foo
# /etc/systemd/system/foo.service
[Unit]
PartOf=bar.service
[Service]
ExecStart=/bin/sleep infinity
RestartSec=0s
Restart=always
ubuntu@lp1839290-b:~$ systemctl cat bar
# /etc/systemd/system/bar.service
[Unit]
BindsTo=foo.service
#Same with or without After=, the window is very small to make a difference.
After=foo.service
[Service]
ExecStart=/bin/sleep infinity
ubuntu@lp1839290-b:~$ sudo systemctl start foo
ubuntu@lp1839290-b:~$ sudo systemctl start bar
ubuntu@lp1839290-b:~$ systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:20:31 UTC; 4s ago
Main PID: 8560 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/foo.service
└─8560 /bin/sleep infinity
May 06 11:20:31 lp1839290-b systemd[1]: Started foo.service.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:20:33 UTC; 3s ago
Main PID: 8570 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/bar.service
└─8570 /bin/sleep infinity
May 06 11:20:33 lp1839290-b systemd[1]: Started bar.service.
ubuntu@lp1839290-b:~$ sudo kill -6 8560
ubuntu@lp1839290-b:~$ systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: failed (Result: core-dump) since Wed 2020-05-06 11:21:08 UTC; 1s ago
Process: 8560 ExecStart=/bin/sleep infinity (code=dumped, signal=ABRT)
Main PID: 8560 (code=dumped, signal=ABRT)
May 06 11:21:08 lp1839290-b systemd[1]: foo.service: Service has no hold-off
time, scheduling restart.
May 06 11:21:08 lp1839290-b systemd[1]: foo.service: Failed to schedule restart
job: Transaction is destructive.
May 06 11:21:08 lp1839290-b systemd[1]: foo.service: Failed with result
'core-dump'.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: inactive (dead) since Wed 2020-05-06 11:21:08 UTC; 1s ago
Process: 8570 ExecStart=/bin/sleep infinity (code=killed, signal=TERM)
Main PID: 8570 (code=killed, signal=TERM)
May 06 11:20:33 lp1839290-b systemd[1]: Started bar.service.
May 06 11:21:08 lp1839290-b systemd[1]: Stopping bar.service...
May 06 11:21:08 lp1839290-b systemd[1]: Stopped bar.service.
ubuntu@lp1839290-b:~$ dpkg -l systemd|grep systemd
ii systemd 237-3ubuntu10.40 amd64 system and service manager
ubuntu@lp1839290-b:~$ sudo systemctl start bar
ubuntu@lp1839290-b:~$ sudo systemctl start foo
ubuntu@lp1839290-b:~$ sudo systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:24:57 UTC; 10s ago
Main PID: 1256 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/foo.service
└─1256 /bin/sleep infinity
May 06 11:24:57 lp1839290-b systemd[1]: Started foo.service.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:24:57 UTC; 10s ago
Main PID: 1258 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/bar.service
└─1258 /bin/sleep infinity
May 06 11:24:57 lp1839290-b systemd[1]: Started bar.service.
ubuntu@lp1839290-b:~$ sudo kill -6 1256
ubuntu@lp1839290-b:~$ sudo systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:25:19 UTC; 2s ago
Main PID: 1276 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/foo.service
└─1276 /bin/sleep infinity
May 06 11:25:19 lp1839290-b systemd[1]: Started foo.service.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: active (running) since Wed 2020-05-06 11:25:19 UTC; 2s ago
Main PID: 1277 (sleep)
Tasks: 1 (limit: 4702)
CGroup: /system.slice/bar.service
└─1277 /bin/sleep infinity
May 06 11:25:19 lp1839290-b systemd[1]: Started bar.service.
ubuntu@lp1839290-b:~$ journalctl -b -u foo
-- Logs begin at Wed 2020-05-06 11:11:19 UTC, end at Wed 2020-05-06 11:25:22
UTC. --
May 06 11:24:57 lp1839290-b systemd[1]: Started foo.service.
May 06 11:25:19 lp1839290-b systemd[1]: foo.service: Main process exited,
code=dumped, status=6/ABRT
May 06 11:25:19 lp1839290-b systemd[1]: foo.service: Failed with result
'core-dump'.
May 06 11:25:19 lp1839290-b systemd[1]: foo.service: Service has no hold-off
time, scheduling restart.
May 06 11:25:19 lp1839290-b systemd[1]: foo.service: Scheduled restart job,
restart counter is at 1.
May 06 11:25:19 lp1839290-b systemd[1]: Stopped foo.service.
May 06 11:25:19 lp1839290-b systemd[1]: Started foo.service.
ubuntu@lp1839290-b:~$ journalctl -b -u bar
-- Logs begin at Wed 2020-05-06 11:11:19 UTC, end at Wed 2020-05-06 11:25:57
UTC. --
May 06 11:24:57 lp1839290-b systemd[1]: Started bar.service.
May 06 11:25:19 lp1839290-b systemd[1]: Stopping bar.service...
May 06 11:25:19 lp1839290-b systemd[1]: Stopped bar.service.
May 06 11:25:19 lp1839290-b systemd[1]: Started bar.service.
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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https://bugs.launchpad.net/bugs/1839290
Title:
systemd doesn't restart a service after crashes
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