There exists a race in container servicing on Windows where, during normal operation, the container will begin to shut itself down while docker calls shutdown explicitly. If the former succeeds just as the latter is attempting to communicate with the container to request the shutdown, an error comes back that can cause the servicing to incorrectly register as a failure. Instead, we just wait for the servicing container to shutdown on it's own, using a reasonable timeout to allow for merging in the updates.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
Right now, if we hit an error retrieving the exit code in HCS process.ExitCode, we return that 0 and that error. Golang convention says that if an error is returned the other values should not be used, but the caller of ExitCode in libcontainerd has to fall through if an error is received. Rather than return a success exit code in that failure case, we should return -1 to indicate a generic failure.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
This change adjusts the calling pattern for servcing containers to use waiting on the process instead of expecting start to block. This is safer, as it avoids timeouts in the start code path for the potentially expensive update operation.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
A previous change added a TTY fixup for stdin on older Windows versions to
work around a Windows issue with backspace/delete behavior. This change
used the OS version to determine whether to activate the behavior.
However, the Windows bug is actually in the image, not the OS, so it
should have used the image's OS version.
This ensures that a Server TP5 container running on Windows 10 will have
reasonable console behavior.
Signed-off-by: John Starks <jostarks@microsoft.com>
In Windows containers in TP5, DEL is interpreted as the delete key, but
Linux generally interprets it as backspace. This prevents backspace from
working when using a Linux terminal or the native console terminal
emulation in Windows.
To work around this, translate DEL to BS in Windows containers stdin when
TTY is enabled. Do this only for builds that do not have the fix in
Windows itself.
Signed-off-by: John Starks <jostarks@microsoft.com>
Removing the call to Shutdown from within Signal in order to rely on waitExit handling the exit of the process.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
This change enables the workflow of finishing installing Windows OS updates in the container after it has completed running, via a special servicing container.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
Restore the 1.10 logic that will reset the restart manager's timeout or
backoff delay if a container executes longer than 10s reguardless of
exit status or policy.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Currently if you restart docker daemon, all the containers with restart
policy `on-failure` regardless of its `RestartCount` will be started,
this will make daemon cost more extra time for restart.
This commit will stop these containers to do unnecessary start on
daemon's restart.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
Signed-off-by: John Howard <jhoward@microsoft.com>
Signed-off-by: John Starks <jostarks@microsoft.com>
Signed-off-by: Darren Stahl <darst@microsoft.com>
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
