Failed to import docker-py about ansible-role-docker HOT 11 CLOSED

@patrickvale

This is because the docker-compose installation in this role pulls in the binary directly from Github. https://github.com/geerlingguy/ansible-role-docker/blob/master/tasks/docker-compose.yml#L16-L20

Since docker-compose isn't installed through pip there is no python compose library to import. Therefore this role doesn't work with docker_service which under the hood uses the compose python library.

I suggest you disable the compose install of this role and instead install docker-compose through pip.

---
dependencies:
  - role: geerlingguy.docker
    vars:
      docker_package: 'docker-ce=18.03.1~ce-0~ubuntu'
      docker_install_compose: false

- name: Install docker-compose
  pip:
    name: docker-compose

from ansible-role-docker.

I have the python-pip and python34-pip packages installed on CentOS 7 and it is still giving me the error. I have also tried changing my pip_package to pip3 and it complained that it was not installed. I am using the latest version of CentOS 7.

from ansible-role-docker.

Why doesn't this role just install python-docker instead of depending on yet another role to install it via pip?

from ansible-role-docker.

Following the suggestion by @jakubgs I tried adding an apt task to install python-docker, just before starting the compose services, however it returned this error

"Unable to load docker-compose. Try `pip install docker-compose`. Error: No module named compose"

from ansible-role-docker.

https://stackoverflow.com/a/41493058/2777965

from ansible-role-docker.

Are you still getting this error? I haven't seen this on any platforms in my testing, nor in my prod server builds. Can you give a reliable set of steps/config to reproduce?

from ansible-role-docker.

Hi,

I am experiencing this problem when using ansible to start a docker-compose stack on a Hetzner Cloud server. Here's my playbook:

---
- hosts: emailservers
  roles:
    - role: geerlingguy.docker
      become: true
      docker_edition: 'ce'
      docker_package_state: present
      docker_install_compose: True
      docker_users:
        - ansible
    - role: docker_mailserver

I tried modifying the ansible_python_interpreter (having installed python 2.7 on Ubuntu or using the stock Debian 9 image) by setting an inventory variable :

[hcloud]
email.***.io

[emailservers]
email.***.io

[emailservers:vars]
ansible_python_interpreter=/usr/bin/python2.7

But I'm still getting this error. The task which the role fails on is:

  - name: Start the docker-compose services
    docker_service:
      project_src: "{{ docker_mailserver_config_path }}"
      state: present

The very verbose error is

The full traceback is:
    File "/tmp/ansible_GGoQWf/ansible_module_docker_service.py", line 458, in <module>
    from compose import __version__ as compose_version

    fatal: [email.***.io]: FAILED! => {
    "changed": false,
    "invocation": {
    "module_args": {
    "api_version": null,
    "build": false,
    "cacert_path": null,
    "cert_path": null,
    "debug": false,
    "definition": null,
    "dependencies": true,
    "docker_host": null,
    "files": null,
    "filter_logger": false,
    "hostname_check": false,
    "key_path": null,
    "nocache": false,
    "project_name": null,
    "project_src": "/tmp/docker-mailserver",
    "pull": false,
    "recreate": "smart",
    "remove_images": null,
    "remove_orphans": false,
    "remove_volumes": false,
    "restarted": false,
    "scale": null,
    "services": null,
    "ssl_version": null,
    "state": "present",
    "stopped": false,
    "timeout": 10,
    "tls": null,
    "tls_hostname": null,
    "tls_verify": null
}
},
    "msg": "Failed to import docker-py - No module named requests.exceptions. Try `pip install docker-py`"
}

from ansible-role-docker.

I found the above solution to work because of

- name: Install docker-compose
  pip:
    name: docker-compose

instead of using the geerlingguy.pip role since the pip module will use the default pip that Ansible is using whereas geerlingguy.pip will use pip as the executor by default and this may not be obvious

from ansible-role-docker.

@kzap - Note that geerlingguy.pip lets you configure which pip that role (and Ansible itself, via the pip module) uses: https://github.com/geerlingguy/ansible-role-pip/blob/master/tasks/main.yml#L13

Also, this issue should be closed; not sure why it was reopened. For anyone experiencing a similar issue, there are a number of different ways of getting the docker-py or docker pip library installed as mentioned in the comments here.

from ansible-role-docker.

@kzap - Note that geerlingguy.pip lets you configure which pip that role (and Ansible itself, via the pip module) uses: https://github.com/geerlingguy/ansible-role-pip/blob/master/tasks/main.yml#L13

Also, this issue should be closed; not sure why it was reopened. For anyone experiencing a similar issue, there are a number of different ways of getting the docker-py or docker pip library installed as mentioned in the comments here.

Yep I saw that, I found my problem was I was setting ansible_python_interpreter: /usr/bin/python3 but geerlingguy.pip was specifically using pip and not pip3 by default, I'll make an issue :)

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@kzap - You'd need to also have pip_package: pip3 for that handler to use pip3 correctly.

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