verify-docker.yaml

---
# Verifies that docker is installed and up to date
#

- name: Verify docker installed and up to date
  hosts: docker-ready
  sudo: yes
  tasks: 
       - debug: msg="Supported docker version= {{docker.version}}"

       - name: docker repo exists (CentOS 7)
         shell: yum repolist -v
         register: docker_repo_exists_centos
         when: ansible_distribution == "CentOS" and
               ansible_distribution_major_version == "7" and
               docker.version == "1.7.0"

       - fail: msg="Docker repo must be installed (CentOS 7)" 
         when: ansible_distribution == "CentOS" and
               ansible_distribution_major_version == "7" and
               docker.version == "1.7.1" and
               docker_repo_exists_centos is defined and
               docker_repo_exists_centos.stdout.find('docker-main-repo') == -1

         # TODO: Check for docker group
         # TODO: Verify that iplant user belongs to docker group

       - name: docker version
         shell: docker version --format=\{\{\.Client\.Version\}\}
         register: docker_version

       - debug: var=docker_version
         when: "docker_version.stdout.find('{{docker.version}}') == -1"

       - fail: msg="docker version is not {{docker.version}}"
         when: "docker_version.stdout.find('{{docker.version}}') == -1"

       - name: docker service exists 
         shell:  systemctl status docker.service
         register: verify_docker_service
         when: ansible_distribution == "CentOS" and
               ansible_distribution_major_version == "7"

       - fail: msg="docker.service does not exist"
         when: verify_docker_service.rc != 0