Ansible cannot import docker-py even though it is installed

Question

I checked this post and followed the fix in both answers and neither worked. I'm opening a new post partly because of that and partly because I'm getting a slightly different error even though the problem might be the same.

Ansible host:

$ ansible --version
ansible 2.1.0.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = Default w/o overrides

Destination client myserver:

$ pip list | egrep 'six|docker|websocket_client'
docker-py (1.2.3)
six (1.10.0)

test.yml:

---
- hosts: myserver
  remote_user: root
  tasks:
  - name: stop any running docker registries
    docker_container:
      name: registry
      state: stopped
...

Ansible server (ansible-playbook aliased to ap):

$ ap -vvvv test.yml

The output:

(probably extraneous output, snipped):

fatal: [myserver]: FAILED! => {
    "changed": false,
    "failed": true,
    "invocation": {
        "module_args": {
            "api_version": null,
            "blkio_weight": null,
            "cacert_path": null,
            "capabilities": null,
            "cert_path": null,
            "command": null,
            "cpu_period": null,
            "cpu_quota": null,
            "cpu_shares": null,
            "cpuset_cpus": null,
            "cpuset_mems": null,
            "debug": false,
            "detach": true,
            "devices": null,
            "dns_opts": null,
            "dns_search_domains": null,
            "dns_servers": null,
            "docker_host": null,
            "entrypoint": null,
            "env": null,
            "etc_hosts": null,
            "exposed_ports": null,
            "filter_logger": false,
            "force_kill": false,
            "groups": null,
            "hostname": null,
            "image": null,
            "interactive": false,
            "ipc_mode": null,
            "keep_volumes": true,
            "kernel_memory": null,
            "key_path": null,
            "kill_signal": null,
            "labels": null,
            "links": null,
            "log_driver":
            "json-file",
            "log_options": null,
            "mac_address": null,
            "memory": "0",
            "memory_reservation": null,
            "memory_swap": null,
            "memory_swappiness": null,
            "name": "registry",
            "network_mode": null,
            "networks": null,
            "oom_killer": null,
            "paused": false,
            "pid_mode": null,
            "privileged": false,
            "published_ports": null,
            "pull": false,
            "read_only": false,
            "recreate": false,
            "restart": false,
            "restart_policy": null,
            "restart_retries": 0,
            "security_opts": null,
            "shm_size": null,
            "ssl_version": null,
            "state": "stopped",
            "stop_signal": null,
            "stop_timeout": null,
            "timeout": null,
            "tls": null,
            "tls_hostname": null,
            "tls_verify": null,
            "trust_image_content": false,
            "tty": false,
            "ulimits": null,
            "user": null,
            "uts": null,
            "volume_driver": null,
            "volumes": null,
            "volumes_from": null
        },
        "module_name": "docker_container"
    },
    "msg": 

(the pertinent error):

"Failed to import docker-py - cannot import name NotFound. Try pip install docker-py"}

I get the same error when I downgrade the docker-py module to 1.1.0 as per the first answer in the referenced post. I also tried to chmod the directories and it made no difference:

(/usr/lib/python2.7/site-packages) myserver$ ls -lad docker*
drwxr-xr-x. 6 root root 4096 Jul  4 10:57 docker/
drwxr-xr-x. 2 root root 4096 Jul  4 10:57 docker_py-1.2.3-py2.7.egg-info/

from chmod -R go+rx docker*.

Has anyone seen this before? I have tried using the pip ansible module to install the modules and then after removing them manually, reinstalled them manually as in the referenced post. I'm also using 2.1.0.0. as you can see, which was supposed to fix this issue.

Answer 1

Got the same problem on the remote server (Debian 10) using ansible 2.4.3.0 and python2 as interpreter

I've tried a lot of combinations docker, docker-py, docker-compose pip modules with different versions, but it started to work only after

apt-get install python-docker

on the server machine

It also could be installed via playbook

- name: Install required system packages
  apt: name=python-docker state=latest update_cache=yes