Docker look at the log of an exited container
docker logs --tail=50 <container id>
for the last fifty lines - useful when your container has been running for a long time.
You can use below command to copy logs even from an exited container :
docker
cp
container_name:
path_of_file_in_container destination_path_locally
Eg:
docker cp sample_container:/tmp/report /root/mylog
Use docker logs
. It also works for stopped containers and captures the entire STDOUT and STDERR streams of the container's main process:
$ docker run -d --name test debian echo "Hello World"
02a279c37d5533ecde76976d7f9d1ca986b5e3ec03fac31a38e3dbed5ea65def
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
49daa9d41a24 debian "echo test" 2 minutes ago Exited (0) 2 minutes ago test
$ docker logs -t test
2016-04-16T15:47:58.988748693Z Hello World