invalid output was: Traceback - KeyError: 'ApiVersion'

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1

Hey,

I’m running ansible(1.6.1) on a ubuntu 12.04 and trying to start containers through the ansible docker module.

The Docker host machine is a 14.04 with Docker 0.9.1 and docker-py.
Building the image through ansible worked like a charm:

  • name: check or build images

docker_image: path=/root/docker/ap53 name=th/ap53 state=present

But when i use the docker module:

  • name: Starting containers
    docker: image=th/ap53 name=n-ap33 state=present

This is what i get:

ESTABLISH CONNECTION FOR USER: root
REMOTE_MODULE docker image=th/ap53 name=n-ap33 state=present
EXEC [‘ssh’, ‘-C’, ‘-tt’, ‘-vvv’, ‘-o’, ‘ControlMaster=auto’, ‘-o’, ‘ControlPersist=60s’, ‘-o’, ‘ControlPath=/root/.ansible/cp/ansible-ssh-%h-%p-%r’, ‘-o’, ‘StrictHostKeyChecking=no’, ‘-o’, ‘KbdInteractiveAuthentication=no’, ‘-o’, ‘PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey’, ‘-o’, ‘PasswordAuthentication=no’, ‘-o’, ‘ConnectTimeout=10’, ‘n-dh04’, “/bin/sh -c ‘mkdir -p $HOME/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985 && echo $HOME/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985’”]
PUT /tmp/tmp4i84VW TO /root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/docker
EXEC [‘ssh’, ‘-C’, ‘-tt’, ‘-vvv’, ‘-o’, ‘ControlMaster=auto’, ‘-o’, ‘ControlPersist=60s’, ‘-o’, ‘ControlPath=/root/.ansible/cp/ansible-ssh-%h-%p-%r’, ‘-o’, ‘StrictHostKeyChecking=no’, ‘-o’, ‘KbdInteractiveAuthentication=no’, ‘-o’, ‘PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey’, ‘-o’, ‘PasswordAuthentication=no’, ‘-o’, ‘ConnectTimeout=10’, ‘n-dh04’, u"/bin/sh -c ‘LC_CTYPE=en_US.UTF-8 LANG=en_US.UTF-8 /usr/bin/python /root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/docker; rm -rf /root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/ >/dev/null 2>&1’"]
failed: [n-dh04] => {“failed”: true, “item”: “”, “parsed”: false}
invalid output was: Traceback (most recent call last):
File “/root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/docker”, line 1922, in
main()
File “/root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/docker”, line 691, in main
containers = manager.create_containers(1)
File “/root/.ansible/tmp/ansible-tmp-1401183631.25-7365119312985/docker”, line 546, in create_containers
if docker.utils.compare_version(‘1.10’, self.client.version()[‘ApiVersion’]) < 0:
KeyError: ‘ApiVersion’
OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: auto-mux: Trying existing master
debug2: fd 3 setting O_NONBLOCK
debug2: mux_client_hello_exchange: master version 4
debug3: mux_client_request_forwards: requesting forwardings: 0 local, 0 remote
debug3: mux_client_request_session: entering
debug3: mux_client_request_alive: entering
debug3: mux_client_request_alive: done pid = 1417
debug3: mux_client_request_session: session request sent
debug1: mux_client_request_session: master session id: 2
debug3: mux_client_read_packet: read header failed: Broken pipe
debug2: Received exit status from master 0
Shared connection to n-dh04 closed.

FATAL: all hosts have already failed – aborting

If i dont use the docker module but run it as a command:

  • name: Start ap53 container
    command: docker run -d -t -name n-ap53-2 th/ap53

Everything works fine.
So there’s something strange in the docker api, anyone bumped into this issue?

2

Hi Thomas,

Check out 1.6.2 since it contains some docker fixes. Also, I seem to remember his issue being a result of old dockerd versions. Upgrade docker to .10 or greater; I think this problem is in .9 and below.

IMHO docker-py should handle backwards compatibility, but doesn’t, and that’s why we see this problem.

3

Yes, this version should be fixed in 1.6.2 and the devel branch on github. Please let us know if you’re still seeing any problems related to this. Thanks!

4

Thx, it worked :slight_smile:

I have another issue tho. In the docker_image module i’ve set the state=preset:

  • name: check or build images
    docker_image: path=/root/docker/{{ item.ap_name }} name={{ item.author }}/{{ item.ap_name }} state=present
    with_items: docker_vars
    register: doc_images

Which should “Build docker image if required” but every time i run it creates a new one and therefor makes a “change” which i presume is what the state=build is for.

(Now running Ansible(1.6.2) on ubuntu 14.04)

5

Oh boy.

Docker currently changes API signatures about every week.

We are doing what we can :slight_smile:

If you would like to help it would be welcome.