problems using Ansible to run docker tasks on OS X

Question

I am just trying to tell Ansible to build a docker image on my OS X machine and this is the error I get:

$ ansible-playbook main.yml  PLAY [localhost] **************************************************************  GATHERING FACTS *************************************************************** ok: [localhost]  TASK: [Build docker image from dockerfiles] *********************************** failed: [localhost] => {"changed": false, "failed": true} msg: ConnectionError(ProtocolError('Connection aborted.', error(2, 'No such file or directory')),)  FATAL: all hosts have already failed -- aborting  PLAY RECAP ********************************************************************            to retry, use: --limit @/Users/ronny/main.retry  localhost                  : ok=1    changed=0    unreachable=0    failed=1 

This is the main.yml file I am using:

--- - hosts: localhost   connection: local    tasks:         - name: Build docker image from dockerfiles           docker_image:             name: testimage             path: test             state: build 

My Dockerfile:

# Build an example Docker container image.  FROM busybox  MAINTAINER Jeff Geerling <[email protected]>  # Run a command when the container starts.  CMD ["/bin/true”]” 

My docker file is located in cookbook/test/Dockerfile

And the main.yml file is located in cookbook/main.yml

I'm running this on OS X.

I am totally lost at this point and any help would be very appreciated.

edit:

In response to Nathanial's request that I use -vvvv I get the following error:

(this is where the path is set to the subdirectory "test")

TASK: [Build docker image from dockerfiles] *********************************** <localhost> ESTABLISH CONNECTION FOR USER: ronny <localhost> REMOTE_MODULE docker_image name=test state=build path=test <localhost> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath="/Users/ronny/.ansible/cp/ansible-ssh-%h-%p-%r" -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 localhost /bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724 && echo $HOME/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724' <localhost> PUT /var/folders/s1/g6kswg952gvg5df6wld173480000gn/T/tmp3g0PIz TO /Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/docker_image <localhost> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath="/Users/ronny/.ansible/cp/ansible-ssh-%h-%p-%r" -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 localhost /bin/sh -c 'LANG=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 /usr/bin/python /Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/docker_image; rm -rf /Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/ >/dev/null 2>&1' failed: [localhost] => {"failed": true, "parsed": false} Traceback (most recent call last):   File "/Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/docker_image", line 1852, in <module>     main()   File "/Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/docker_image", line 235, in main     image_id = manager.build()   File "/Users/ronny/.ansible/tmp/ansible-tmp-1433079033.35-4833710313724/docker_image", line 140, in build     stream = self.client.build(self.path, tag=':'.join([self.name, self.tag]), nocache=self.nocache, rm=True, stream=True)   File "/usr/local/lib/python2.7/site-packages/docker/client.py", line 319, in build     raise TypeError("You must specify a directory to build in path") TypeError: You must specify a directory to build in path OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: 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_forwards: request forwardings: 0 local, 0 remote debug3: mux_client_request_session: entering debug3: mux_client_request_alive: entering debug3: mux_client_request_alive: done pid = 78798 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 localhost closed.   FATAL: all hosts have already failed -- aborting  PLAY RECAP ********************************************************************            to retry, use: --limit @/Users/ronny/main.retry  localhost                  : ok=1    changed=0    unreachable=0    failed=1 

In response to the above error, I tried giving the full path to the build directory where Dockerfile is located

path: "/Users/ronny/projects/dockers/tutorial/ansibledocker/test” 

then I got:

TASK: [Build docker image from dockerfiles] *********************************** <localhost> ESTABLISH CONNECTION FOR USER: ronny <localhost> REMOTE_MODULE docker_image name=test state=build path=/Users/ronny/projects/dockers/tutorial/ansibledocker/test <localhost> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath="/Users/ronny/.ansible/cp/ansible-ssh-%h-%p-%r" -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 localhost /bin/sh -c 'mkdir -p $HOME/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012 && echo $HOME/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012' <localhost> PUT /var/folders/s1/g6kswg952gvg5df6wld173480000gn/T/tmplH4Lln TO /Users/ronny/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012/docker_image <localhost> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath="/Users/ronny/.ansible/cp/ansible-ssh-%h-%p-%r" -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 localhost /bin/sh -c 'LANG=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 /usr/bin/python /Users/ronny/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012/docker_image; rm -rf /Users/ronny/.ansible/tmp/ansible-tmp-1433079137.87-213359153110012/ >/dev/null 2>&1' failed: [localhost] => {"changed": false, "failed": true} msg: ConnectionError(ProtocolError('Connection aborted.', error(2, 'No such file or directory')),)  FATAL: all hosts have already failed -- aborting  PLAY RECAP ********************************************************************            to retry, use: --limit @/Users/ronny/main.retry  localhost                  : ok=1    changed=0    unreachable=0    failed=1 

edit #2

OK, I tried doing something different. instead of building an image, I tried to simply start one. After diggin in lib/python2.7/site-packages/ansible/modules/core/cloud/docker/docker.py I noticed that in class DockerManager.init around line 558, they set a few environment variables:

env_host = os.getenv('DOCKER_HOST') env_docker_verify = os.getenv('DOCKER_TLS_VERIFY') env_cert_path = os.getenv('DOCKER_CERT_PATH') env_docker_hostname = os.getenv('DOCKER_TLS_HOSTNAME') 

So I spat out those values into a log file, and lo and behold, none of them were being set.

Then when I set them directly in main.yml:

- name: start container       docker:         name: mydata         image: busybox         state: present       environment:         DOCKER_HOST: tcp://192.168.59.103:2376         DOCKER_TLS_VERIFY: 1         DOCKER_CERT_PATH: /Users/ronny/.boot2docker/certs/boot2docker-vm         DOCKER_TLS_HOSTNAME: boot2docker 

I was able to successfully start a container!

However, this method did not work with my initial issue, which is to build a docker image.

Digging further in docker_image.py I noticed that it breaks down around line 188 (I say "around" because I have logging breaks so I don't know the exact line) where it has the following code:

   images = self.client.images() 

so more digging and I see that self.client is checking out the docker_url at 'unix://var/run/docker.sock'

but over at this link I see that /var/run/docker.sock does not exist on OS X, instead one reply said that

/var/run/docker.sock will not be on your OSX filesystem - the Docker daemon is running inside the boot2docker VM - and that's where the unix socket is.

That serial file is also not related to the docker socket.

oyu need to talk to the TCP socket specified in the DOCKER_HOST env.

now I tried setting docker_url to the DOCKER_HOST URL, as the description for this modules says:

docker_url: description: - URL of docker host to issue commands to required: false default: unix://var/run/docker.sock aliases: []

but when I set it to the DOCKER_HOST address, I got an error.

Here is main.yml

   - name: Build docker image from dockerfiles            docker_image:             name: testimage  #            path: test             path: /Users/ronny/projects/dockers/tutorial/ansibledocker/test             state: build             docker_url: 192.168.59.103:2376 

and here is the error:

failed: [localhost] => {"changed": false, "failed": true} msg: ConnectionError(ProtocolError('Connection aborted.', BadStatusLine('\x15\x03\x01\x00\x02\x02\n',)),)  FATAL: all hosts have already failed -- aborting  PLAY RECAP ********************************************************************            to retry, use: --limit @/Users/ronny/main.retry  localhost                  : ok=3    changed=0    unreachable=0    failed=1 

Any ideas?

Answer 1

Your first configuration is almost "ok", two things need change

tasks: ...   path: ./test   state: present 

the root directory to the ansible in your case is where your main.yml file is located.

cookbook/ ├── main.yml └── test     └── Dockerfile 

So the content of the main.yml stay this

--- - hosts: localhost   connection: local    tasks:   - name: Build docker image from dockerfiles     docker_image:       name: testimage       path: ./test       state: present 

The state needs to be present accord doc