Reputation: 95
Using ansible to run docker swarm on multiple virtual machines.
The ansible is not able to find the python module docker
on the remote machine, even though it has been installed.
Runs the playbook
sudo ansible-playbook -i inv2.py /etc/ansible/playbook.yml
Error message:
fatal: [10.212.137.216]: FAILED! => {"changed": false, "msg": "Failed to import docker or docker-py - No module named requests.exceptions. Try `pip install docker` or `pip install docker-py` (Python 2.6)"}
Module list:
ubuntu@donald0:~$ pip list
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
...
cryptography (2.1.4)
docker (3.7.1)
docker-pycreds (0.4.0)
...
Upvotes: 5
Views: 26529
Reputation: 15237
This error occurs because Ansible is searching for a different path of the python modules that you are using.
When you install Ansible using the official package, it uses Python 2.7, so when you run Ansible it will search for the python 2 modules.
There are some ways to solve this:
- Adding the ansible_python_interpreter
option setting your correct Python path:
Like the following example:
ansible-playbook -i inventory playbook.yml -e 'ansible_python_interpreter=/usr/bin/python3'
- Reinstall the ansible using the pip3:
Using the following commands:
sudo apt remove ansible
pip3 install ansible
I think that the second option is the best approach to avoid future errors.
Read more about Python 3 Support with Ansible: Ansible - Python 3 Support.
Upvotes: 12
Reputation: 21
FWIW, I had this problem because the directories under /usr/lib64/python2.7
were readable and executable for root
only. After I ran a chmod -R go+rX /usr/lib{,64}
the problem was gone. root
's umask
was 077
, hence the problem.
Upvotes: 0
Reputation:
You need python interpreter in you hosts file- /etc/ansible/hosts
ansible_python_interpreter=/usr/bin/python3
For example:
ubuntu@${ip} ansible_private_key_file=~/.ssh/${var.key_name}.pem ansible_python_interpreter=/usr/bin/python3
For playbook, you need the Python Module and python docker-compose. Working example would be:
tasks:
- name: Install Docker
apt:
update_cache: yes
name: docker.io
- name: Install Docker-Compose
apt:
name: docker-compose
- name: Install Python Module
apt:
name: python3-pip
- name: Install Python Docker-Compose
pip:
name: docker-compose
Upvotes: -2
Reputation: 453
The following configurations work for me. It installs docker, python and docker-compose latest version
---
- name: Checking docker on latest version
apt: name=docker.io state=latest
- name: Checking python
apt: name=python state=latest
- name: Checking docker-compose on latest version
apt: name=docker-compose state=latest
Upvotes: 0