update to support newer versions of ubuntu

Author: startnow65

Readme.md

@@ -6,7 +6,7 @@ An ansible role that installs docker host on ubuntu
 ### Role Variables
 ```yaml
 dockerhost_group                : "docker"
-docker_compose_version          : "1.6.2"
+docker_compose_version          : "1.25.3"
 docker_compose_dir              : "/opt/docker_compose"
 docker_compose_install          : True
 ```
@@ -15,4 +15,4 @@ docker_compose_install          : True
 MIT
 
 ### Contributors
-* [Adham Helal](https://github.com/ahelal)
+* [Adham Helal](https://github.com/ahelal)

defaults/main.yml

@@ -1,7 +1,9 @@
 ---
 
 dockerhost_group                : "docker"
-docker_compose_version          : "1.6.2"
+docker_compose_version          : "1.25.3"
 docker_compose_dir              : "/opt/docker_compose"
 docker_compose_install          : True
-docker_install_py_module        : False
+docker_install_py_module        : False
+
+docker_gpg_url                  : https://download.docker.com/linux/ubuntu/gpg

handlers/main.yml

@@ -1,6 +1,11 @@
 ---
 - name: restart docker
   service: 
-    name="docker"
-    state="restarted"
+    name: docker
+    state: restarted
 
+- name: restart docker systemd
+  systemd: 
+    name: docker
+    state: restarted
+    daemon_reload: True

meta/main.yml

@@ -2,16 +2,14 @@
 # meta file for ansible
 galaxy_info:
   author: Adham Helal
-  description: Install manage firefox
+  description: Install manage docker daemon
   license: MIT
   min_ansible_version: 1.9
   platforms:
   - name: Ubuntu
     versions:
-    - all
-  - name: Debian
-    versions:
-    - all
+    - 18.04
+    - 16.04
   categories:
     - web
 dependencies: []

tasks/apt.yml

@@ -9,20 +9,19 @@
   with_items:
     - apt-transport-https
     - ca-certificates
-    - "linux-image-extra-{{ ansible_kernel }}"
 
 - name: Add apt repo GPG 
   apt_key:
-    keyserver="{{ dockerhost_keyserver }}"
     id="{{ dockerhost_id }}"
+    url="{{ docker_gpg_url }}"
 
 - name: Add docker apt repo
   apt_repository: 
-    repo="deb https://apt.dockerproject.org/repo ubuntu-{{ ansible_lsb.codename }} main"
+    repo="deb https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable"
     update_cache="yes"
 
 - name: Purge the old repo (lxc-docker)
   apt:
     pkg="lxc-docker"
     state="absent"
-    purge="true"
+    purge="true"

tasks/main.yml

@@ -4,11 +4,11 @@
 
 - name: Add docker group
   group: 
-    name="{{ dockerhost_group }}"
-    system="True"
-    state="present"
+    name: "{{ dockerhost_group }}"
+    system: True
+    state: present
 
-- name: Include apt tasks
+- name: Apt tasks
   include: apt.yml
 
 - name: Include docker-py
@@ -17,21 +17,32 @@
 
 - name: Install docker engine
   apt:
-    pkg="docker-engine"
+    pkg: "docker-ce"
 
 - name: Include docker-compose.yml
   include: docker-compose.yml
   when: docker_compose_install
 
-- name: Include docker conf
+- name: Create docker conf
   template: 
-    src=docker_conf_ubuntu_14.04.j2
-    dest=/etc/default/docker
+    src: docker_conf.j2
+    dest: /etc/default/docker
+  when: ansible_service_mgr != 'systemd'
   notify: 
-    - restart docker
+  - restart docker
+
+- name: Create docker systemd unit file
+  template: 
+    src: docker_systemd_service.j2
+    dest: /etc/systemd/system/docker.service
+  when: ansible_service_mgr == 'systemd'
+  notify: 
+  - restart docker systemd
+
+- meta: flush_handlers
 
 - name: Ensure docker is running and starts by default
   service: 
-    name="docker"
-    state="started"
-    enabled=True
+    name: docker
+    state: started
+    enabled: True

templates/docker_conf_ubuntu_14.04.j2 templates/docker_conf.j2templates/docker_conf_ubuntu_14.04.j2 renamed to templates/docker_conf.j2

@@ -0,0 +1,38 @@
+[Unit]
+Description=Docker Application Container Engine
+Documentation=https://docs.docker.com
+After=network-online.target docker.socket firewalld.service
+Wants=network-online.target
+Requires=docker.socket
+
+[Service]
+Type=notify
+# the default is not to use systemd for cgroups because the delegate issues still
+# exists and systemd currently does not support the cgroup feature set required
+# for containers run by docker
+{% if dockerhost_docker_opts is defined %}
+ExecStart=/usr/bin/dockerd -H fd:// {{dockerhost_docker_opts}}
+{% else %}
+ExecStart=/usr/bin/dockerd -H fd://
+{% endif %}
+ExecReload=/bin/kill -s HUP $MAINPID
+LimitNOFILE=1048576
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNPROC=infinity
+LimitCORE=infinity
+# Uncomment TasksMax if your systemd version supports it.
+# Only systemd 226 and above support this version.
+#TasksMax=infinity
+TimeoutStartSec=0
+# set delegate yes so that systemd does not reset the cgroups of docker containers
+Delegate=yes
+# kill only the docker process, not all processes in the cgroup
+KillMode=process
+# restart the docker process if it exits prematurely
+Restart=on-failure
+StartLimitBurst=3
+StartLimitInterval=60s
+
+[Install]
+WantedBy=multi-user.target

templates/docker_systemd_service.j2

@@ -1,7 +1,7 @@
 ---
 
-dockerhost_keyserver                : "hkps://keys.openpgp.org"
-dockerhost_id                       : "58118E89F3A912897C070ADBF76221572C52609D"
+dockerhost_keyserver                : "https://download.docker.com/linux/ubuntu/gpg"
+dockerhost_id                       : "7EA0A9C3F273FCD8"
 
 docker_compose_file                 : "docker-compose-Linux-{{ ansible_userspace_architecture }}-{{ docker_compose_version }}"
 docker_compose_url                  : "https://github.com/docker/compose/releases/download/{{ docker_compose_version }}/docker-compose-Linux-{{ ansible_userspace_architecture }}"