CoreOSが自動でrebootしないようにする

github.com

のまんまなんだけど

sudo systemctl stop update-engine.service でいける

core@core-01 ~ $ sudo systemctl status update-engine.service
● update-engine.service - Update Engine
   Loaded: loaded (/usr/lib/systemd/system/update-engine.service; disabled; vendor preset: disabled)
   Active: active (running) since Wed 2018-03-14 08:13:23 UTC; 1min 44s ago
 Main PID: 646 (update_engine)
    Tasks: 2 (limit: 15653)
   CGroup: /system.slice/update-engine.service
           └─646 /usr/sbin/update_engine -foreground -logtostderr

Mar 14 08:13:23 core-01 update_engine[646]: Is Delta Payload = 0
Mar 14 08:13:23 core-01 update_engine[646]: Max Failure Count Per Url = 10
Mar 14 08:13:23 core-01 update_engine[646]: Disable Payload Backoff = 1
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.578522   646 payload_state.cc:380] Payload Attempt Number = 1
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.578845   646 payload_state.cc:403] Current URL Index = 0
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.579187   646 payload_state.cc:424] Current URL (Url0)'s Failure Count = 0
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.579489   646 payload_state.cc:451] Backoff Expiry Time = 01/01/70 00:00:00 UTC
Mar 14 08:13:23 core-01 systemd[1]: Started Update Engine.
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.602177   646 update_check_scheduler.cc:74] Next update check in 2m16s
Mar 14 08:14:08 core-01 update_engine[646]: I0314 08:14:08.540655   646 update_attempter.cc:493] Updating boot flags...
core@core-01 ~ $ sudo systemctl stop update-engine.service
core@core-01 ~ $ sudo systemctl status update-engine.service
● update-engine.service - Update Engine
   Loaded: loaded (/usr/lib/systemd/system/update-engine.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2018-03-14 08:15:35 UTC; 8s ago
  Process: 646 ExecStart=/usr/sbin/update_engine -foreground -logtostderr (code=exited, status=1/FAILURE)
 Main PID: 646 (code=exited, status=1/FAILURE)

Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.578845   646 payload_state.cc:403] Current URL Index = 0
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.579187   646 payload_state.cc:424] Current URL (Url0)'s Failure Count = 0
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.579489   646 payload_state.cc:451] Backoff Expiry Time = 01/01/70 00:00:00 UTC
Mar 14 08:13:23 core-01 systemd[1]: Started Update Engine.
Mar 14 08:13:23 core-01 update_engine[646]: I0314 08:13:23.602177   646 update_check_scheduler.cc:74] Next update check in 2m16s
Mar 14 08:14:08 core-01 update_engine[646]: I0314 08:14:08.540655   646 update_attempter.cc:493] Updating boot flags...
Mar 14 08:15:35 core-01 systemd[1]: Stopping Update Engine...
Mar 14 08:15:35 core-01 systemd[1]: update-engine.service: Main process exited, code=exited, status=1/FAILURE
Mar 14 08:15:35 core-01 systemd[1]: update-engine.service: Failed with result 'exit-code'.
Mar 14 08:15:35 core-01 systemd[1]: Stopped Update Engine.