#Docker inspect format string code

You can’t just use the IP address, because Erlang’s distribution protocol requires the host to be specified the same way on both ends.

InstallationMedia: Ubuntu-Server 14. But when the node is running in a Docker container, this doesn’t work, because host needs to be resolvable to an IP address by the host. When you launch a docker inspect you can get the values from the 'top-level' easily, with a basic. Docker inspect is important because it is the clean way to extract information from a running container docker inspect -f. InstallationDate: Installed on (146 days ago) I find that the examples in the docker inspect documentation seem magic, but do not explain much. Hopefully all this stuff (and a lot more) showed up in the data gathered by the ubuntu-bug command.

#Docker inspect format string code

The code I'm using to manage these docker instances is here: hg.linux- ha.org/ assimilation/ file/tip/ cma/systemtests /docker. So, it's not an empty string being treated as or converted to a zero. The string in at the end of the line is the contents of what I read from the docker.io inspect command listed above. State.Pid is currently zero for instance DockerSystem. I am not creating any users so i wouldn’t expect this to be an issue. .id String: To ignore components from platform layers: specify the ID (from docker inspect image:tag: last of RootFS.Layers) of the top layer of the platform image docker.tar String: Docker tarfile path String: The format for help output: MARKDOWN (text), or HTML default: MARKDOWN help. Here's the output from my code when it encounters this condition: Since it takes a long time to spawn 200 containers and even longer to shut them down (like 5 seconds each), this *really* puts a kink in my testing. I retry every second for 100 seconds just in case it's a transient error.

This almost always works, but occasionally it doesn't - and returns a line containing only '0'. It seems to happen more often when I spawn a lot of them (like 200) as fast as I can.ĭocker.io 'inspect' '-format' '' docker- instance- name for each docker instance as I spawn it so I can control what is going on in those containers.Įvery so often (that is every few thousand containers), I get one which the State.Pid is '0' - and remains zero. Usage: docker container exec OPTIONS CONTAINER COMMAND ARG. In the process, I gather the pid, hostname, etc. I'm doing a bunch of testing with dozens to hundreds of Docker containers.