I have a bunch of containers on my NixOS machine. I recently did a big machine-wide NixOS update, all successful, but one of the containers will no longer come up. The others are fine.
Can anyone advise me how to debug? I see:
# nixos-container start dd_db Job for container@dd_db.service failed because the control process exited with error code. See "systemctl status container@dd_db.service" and "journalctl -xe" for details. /run/current-system/sw/bin/nixos-container: failed to start container
# systemctl status container@dd_db.service ● container@dd_db.service - Container 'dd_db' Loaded: loaded (/nix/store/7y0sr19lrq1zhgy2rkxpr0zl4q5m133q-unit-container-dd_db.service/container@dd_db.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Mon 2019-06-24 14:26:47 PDT; 8s ago Process: 12313 ExecStartPre=/nix/store/rlw1qr2qy0gg9bsiy3pddvnh8gqrbmdb-unit-script-container_dd_db-pre-start (code=exited, status=0/SUCCESS) Process: 12315 ExecStart=/nix/store/fyzw0brvamzdwiz60m3isfj0s4nislqg-unit-script-container_dd_db-start (code=exited, status=1/FAILURE) Main PID: 12315 (code=exited, status=1/FAILURE) Status: "Terminating..." Jun 24 14:26:47 srvr systemd: container@dd_db.service: Service RestartSec=100ms expired, scheduling restart. Jun 24 14:26:47 srvr systemd: container@dd_db.service: Scheduled restart job, restart counter is at 5. Jun 24 14:26:47 srvr systemd: Stopped Container 'dd_db'. Jun 24 14:26:47 srvr systemd: container@dd_db.service: Start request repeated too quickly. Jun 24 14:26:47 srvr systemd: container@dd_db.service: Failed with result 'exit-code'. Jun 24 14:26:47 srvr systemd: Failed to start Container 'dd_db'.
which really doesn’t tell me much, and the only line that looks interesting in the journal is:
Jun 24 14:26:47 srvr container dd_db: Invalid machine name: dd_db
which looks like it matters, but this container hasn’t changed since before I updated the system.
The container’s filesystem is all present and the files are all there. What can I do to figure this out a bit further? Anything obvious?