Enable apt pinning (#47)

* Allow overriding a different upstream server for packages

* Enable APT pinning. Align variables to Mesos role.

* Preserve compatibility with people still using 'marathon=' in the variables

* fix mesosphere repos host

* yum_repo using https (as in the ansible-mesos role)

* proper conditional check handling all possible cases (incl var not defined and --extra-vars pin_priority=false)

* marathon_apt_pin_priority (debian/ubuntu specific) in the README

README.md

@@ -32,6 +32,8 @@ marathon_version: "1.3.6"
 # Debian: Mesosphere apt repository URL
 marathon_apt_package: "marathon={{ marathon_version }}-*"
 marathon_apt_repo: "deb http://repos.mesosphere.com/{{ansible_distribution|lower}} {{ansible_distribution_release|lower}} main"
+# Debian apt pin priority for the marathon package. If empty (the default), no pin priority is used.
+marathon_apt_pin_priority:
 
 # RedHat: Mesosphere yum repository URL
 marathon_yum_package: "marathon-{{ marathon_version }}"

defaults/main.yml

@@ -1,13 +1,19 @@
 ---
 marathon_version: "1.3.6"
 
+marathon_repo_host: repos.mesosphere.com
+
 # Debian: Mesosphere apt repository URL
-marathon_apt_package: "marathon={{ marathon_version }}-*"
-marathon_apt_repo: "deb http://repos.mesosphere.com/{{ansible_distribution|lower}} {{ansible_distribution_release|lower}} main"
+marathon_package_version: "1.0.540"
+marathon_os_distribution: "{{ ansible_distribution | lower }}"
+marathon_os_version: "{{ ansible_distribution_version.split('.') | join('') }}"
+marathon_apt_url: "http://{{ marathon_repo_host }}/{{ ansible_distribution | lower }}"
+marathon_package_full_version: "{{ marathon_version }}-{{ marathon_package_version }}.{{ marathon_os_distribution }}{{ marathon_os_version }}"
+marathon_apt_package: "marathon={{ marathon_package_full_version }}"
 
 # RedHat: Mesosphere yum repository URL
 marathon_yum_package: "marathon-{{ marathon_version }}"
-mesosphere_yum_repo: "http://repos.mesosphere.com/el/{{ os_version_major }}/noarch/RPMS/{{ mesosphere_releases[os_version_major] }}"
+mesosphere_yum_repo: "https://{{ marathon_repo_host }}/el/{{ os_version_major }}/noarch/RPMS/{{ mesosphere_releases[os_version_major] }}"
 
 marathon_hostname: "{{ inventory_hostname }}"
 marathon_port: 8080

tasks/Debian.yml

@@ -3,7 +3,13 @@
   apt_key: id=E56151BF keyserver=keyserver.ubuntu.com state=present
 
 - name: Add Mesosphere repo
-  apt_repository: repo="{{marathon_apt_repo}}" state=present update_cache=yes
+  apt_repository: repo='deb {{ marathon_apt_url }} {{ ansible_distribution_release | lower }} main' state=present update_cache=yes
+
+- name: Pin Marathon version
+  template:
+    src: marathon.pref.j2
+    dest: /etc/apt/preferences.d/marathon.pref
+  when: marathon_apt_pin_priority | default(false) | bool
 
 - name: Install Marathon package
   apt: pkg={{ marathon_apt_package }} state=present

templates/marathon.pref.j2

@@ -0,0 +1,3 @@
+Package: marathon
+Pin: version {{ marathon_package_full_version }}
+Pin-Priority: {{ marathon_apt_pin_priority }}