After upgrading to 3.15, one one of my hosts I see that all vms stopped in approx 1-2h tonight.
I the lxd.log I can see many lines like this:
t=2019-07-21T03:32:26+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:27+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:34+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:35+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:39+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:40+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:44+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:45+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:47+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:48+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:49+0000 lvl=eror msg=“Failed to retrieve PID of executing child process: EOF”
t=2019-07-21T03:32:55+0000 lvl=info msg=“Shutting down container” action=shutdown created=2019-07-13T02:37:56+0000 ephemeral=false name=vm646960 project=default timeout=-1s used=2019-07-20T03:35:59+0000
t=2019-07-21T03:34:23+0000 lvl=info msg=“Shutting down container” action=shutdown created=2019-06-22T07:59:25+0000 ephemeral=false name=vm643858 project=default timeout=-1s used=2019-07-20T03:41:53+0000
t=2019-07-21T03:34:48+0000 lvl=info msg=“Stopping container” action=stop created=2018-12-29T06:53:11+0000 ephemeral=false name=vm618292 project=default stateful=false used=2019-07-20T03:35:36+0000
t=2019-07-21T03:34:48+0000 lvl=info msg=“Shut down container” action=shutdown created=2018-12-29T06:53:11+0000 ephemeral=false name=vm618292 project=default timeout=-1s used=2019-07-20T03:35:36+0000
t=2019-07-21T03:35:18+0000 lvl=info msg=“Stopped container” action=stop created=2018-12-29T06:53:11+0000 ephemeral=false name=vm618292 project=default stateful=false used=2019-07-20T03:35:36+0000
Anyone could explain what happened and how to prevent this ?