Ansible Docker Connection Error - docker

Question

I am running ansible version 1.9, docker-py version 1.1.0 and Docker 1.9.1. I have a private insecured docker registry running at http://registry.myserver.com:5000.
I have an ansible task to start a container using a pulled image from this remote registry:
---
- name: Start User Service Container
docker:
name: userService
image: user-service
registry: registry.myserver.com:5000
state: running
insecure_registry: yes
expose:
- 8355
However, this is currently returning the following error:
failed: [bniapp1] => {"changed": false, "failed": true}
msg: ConnectionError(ProtocolError('Connection aborted.', error(2, 'No such file or directory')),)
Verbose output:
<54.229.16.155>
<54.229.16.155> image=discovery-service registry=http://registry.myserver.com:5000 name=discoveryService state=running
<54.229.16.155> IdentityFile=/home/nfrstrctrescd/bni-api.pem ConnectTimeout=10 PasswordAuthentication=no KbdInteractiveAuthentication=no User=centos ControlPath =/home/nfrstrctrescd/.ansible/cp/ansible-ssh-%h-%p-%r PreferredAuthentications=g ssapi-with-mic,gssapi-keyex,hostbased,publickey ControlMaster=auto ControlPersis t=60s
<54.229.16.155>
<54.229.16.155> IdentityFile=/home/nfrstrctrescd/bni-api.pem ConnectTimeout=10 'sudo -k && sudo -H -S -p "[sudo via ansible, key=hxhptjipltjnteknbbxkqgcdwvwshen p] password: " -u root /bin/sh -c '"'"'echo SUDO-SUCCESS-hxhptjipltjnteknbbxkqgc dwvwshenp; LANG=C DOCKER_HOST=tcp://127.0.0.1:2376 DOCKER_TLS_VERIFY=1 LC_CTYPE= C DOCKER_CERT_PATH=/opt/docker/certs /usr/bin/python /home/centos/.ansible/tmp/a nsible-tmp-1460499148.45-268540710837667/docker; rm -rf /home/centos/.ansible/tm p/ansible-tmp-1460499148.45-268540710837667/ >/dev/null 2>&1'"'"'' PasswordAuthe ntication=no KbdInteractiveAuthentication=no User=centos ControlPath=/home/nfrst rctrescd/.ansible/cp/ansible-ssh-%h-%p-%r PreferredAuthentications=gssapi-with-m ic,gssapi-keyex,hostbased,publickey ControlMaster=auto ControlPersist=60s
failed: [bniapp1] => {"changed": false, "failed": true}
msg: ConnectionError(ProtocolError('Connection aborted.', error(2, 'No such file or directory')),)
Note: When i run the container manually on the remote server, the image gets pulled and the container is started correctly:
docker run registry.myserver.com:5000/user-service

Answer 1

I got this error because my docker daemon was not running. Adding the following ansible code before starting docker fixed it for me:
# Start Docker Service
- name: Start Docker service
service: name=docker state=started
become: yes
become_method: sudo
- name: Boot Docker on startup
service: name=docker enabled=yes
become: yes
become_method: sudo