Hallo Valentin, thanks for response. I'm a bit skeptical about strace. It needs to be run inside a container. strace uses shared libraries but registry container is based on busybox and required libraries are just not there, even libc is different. I put registry container inside a pod and when register terminates after exit from ssh session, pod also is stopped cannot be restarted anymore. On attempt to start the pod the following error is returned: error starting container cf38918cdcd10310cf0b339b429d767e03ff8b221d40d73244f918208d672582: command rootless-cni-infra [alloc cf38918cdcd10310cf0b339b429d767e03ff8b221d40d73244f918208d672582 regnet registry ] in container ff259455829ebb5035e1bd68f75517d7c8983741be347c95967817ed3e3ff6f6 failed with status 1, stdout="", stderr="failed to open netns \"/proc/3037/ns/net\": failed to Statfs \"/proc/3037/ns/net\": no such file or directory\n" If I stop the pod with registry properly (podman pod stop) then it can be started back without problems. When I try to cleanup the problem removing the pod, I see the following errors: registry@cronos:~$ podman pod rm registry ERRO[0000] Error removing container 719c2f2059039d409c9ff7c35b9624f144a0853b1c85848efbdddeb06fddb416 from pod 097d2adb0d65bf8598537c0bb79d2e771fabbb0be726d010e34743075b154541: error freeing lock for container 719c2f2059039d409c9ff7c35b9624f144a0853b1c85848efbdddeb06fddb416: no such file or directory ERRO[0000] Error removing container cf38918cdcd10310cf0b339b429d767e03ff8b221d40d73244f918208d672582 from pod 097d2adb0d65bf8598537c0bb79d2e771fabbb0be726d010e34743075b154541: error freeing lock for container cf38918cdcd10310cf0b339b429d767e03ff8b221d40d73244f918208d672582: no such file or directory ERRO[0000] Error freeing pod 097d2adb0d65bf8598537c0bb79d2e771fabbb0be726d010e34743075b154541 lock: no such file or directory Error: error freeing lock for container 507b1a22cfbec0d6fe11cd513c0e7d31e6a36f5cf036844e03de02d1eda83765: no such file or directory Are these errors related to corrupt /tmp/podman-run-20000 or /tmp/run-2000 contents? Is it possible that some files under /tmp/podman-run-20000 or /tmp/run-20000 are somehow removed on ssh session exit and crash the container?

Best regards, On 31.05.2021 10:34, Valentin Rothberg wrote: Hi Michael, Thanks for reaching out. On Sat, May 29, 2021 at 10:33 PM Michael Ivanov <ivans(a)isle.spb.ru&gt; wrote: > Hallo, > > Not sure whether it is a right place o ask, but still. I am trying to run > docker registry > in rootless podman. I have created a 'register' user and started the > registry with the > following command: > > podman run --privileged -d --name registry -p 5000:5000 -v > /srv/registry:/var/lib/registry --restart=always registry:latest > > (/srv/registry belongs to 'registry' user, so should be visible in > rootless container > as belonging to root). > > So far so good, I test the register with podman search and it returns > expected results. > But as soon as I exit the ssh session in which I started the container, > container > terminates, not immediately but in half minute or so. There;s no > diagnostic about > the reason in podman logs, nor in /var/syslog, nor in dmesg output. Just > in case > I tried to start it with nohup - same result. I also tried to start it as > a service > using the following file: > > [Unit] > Description=Containers registry > After=syslog.target network.target > RequiresMountsFor=/srv/registry > > [Service] > User=registry > Group=registry > LimitMEMLOCK=infinity > LimitNOFILE=65535 > Type=simple > RemainAfterExit=yes > ExecStart=/usr/bin/podman start registry > ExecStop=/usr/bin/podman stop -t 60 registry > > [Install] > WantedBy=multi-user.target > > And it still terminates in about half a minute after service startup. > > How can I find at least some indication about why this happens? > You could use strace on the container process and the corresponding conmon process to see what's going on. I suspect that the container is getting killed, probably by systemd. Can you try using `podman-generate-systemd` for generating the systemd unit file? Kind regards, Valentin > Best regards, > -- > \ / | | > (OvO) | Михаил Иванов | > (^^^) | | > \^/ | E-mail: ivans(a)isle.spb.ru | > ^ ^ | | > _______________________________________________ > Podman mailing list -- podman(a)lists.podman.io > To unsubscribe send an email to podman-leave(a)lists.podman.io > -- \ / | | (OvO) | Михаил Иванов | (^^^) | | \^/ | E-mail: ivans(a)isle.spb.ru | ^ ^ | | _______________________________________________ Podman mailing list -- podman(a)lists.podman.io To unsubscribe send an email to podman-leave(a)lists.podman.io