common role in order to support other linux distribs

cluster.yml

 ---
-- hosts: downloader
-  sudo: no
-  roles:
-    - { role: download, tags: download }
-
 - hosts: k8s-cluster
   roles:
+    - { role: common, tags: common }
     - { role: docker, tags: docker }
     - { role: kubernetes/node, tags: node }
     - { role: etcd, tags: etcd }

roles/common/defaults/main.yml

@@ -5,16 +5,19 @@ flannel_version: 0.5.5
 kube_version: v1.1.3
 kubectl_checksum: "01b9bea18061a27b1cf30e34fd8ab45cfc096c9a9d57d0ed21072abb40dd3d1d"
 kubelet_checksum: "62191c66f2d670dd52ddf1d88ef81048977abf1ffaa95ee6333299447eb6a482"
+kube_download_url: "https://storage.googleapis.com/kubernetes-release/release/{{ kube_version }}/bin/linux/amd64"
 
 calico_version: v0.13.0
 calico_plugin_version: v0.7.0
 
-etcd_download_url: "https://github.com/coreos/etcd/releases/download"
 flannel_download_url: "https://github.com/coreos/flannel/releases/download"
-kube_download_url: "https://storage.googleapis.com/kubernetes-release/release/{{ kube_version }}/bin/linux/amd64"
 calico_download_url: "https://github.com/Metaswitch/calico-docker/releases/download"
 calico_plugin_download_url: "https://github.com/projectcalico/calico-kubernetes/releases/download/{{calico_plugin_version}}/calico_kubernetes"
 
-ansible_python_interpreter: PATH="{{ ansible_user_dir }}"/bin:$PATH python
-pip_python_modules:
-  - httplib2
+req_debian_pkg:
+  - python-httplib2
+  - python-apt
+  - python-pip
+
+pypy_version: 2.4.0
+python_pypy_url: "https://bitbucket.org/pypy/pypy/downloads/pypy-{{ pypy_version }}.tar.bz2"

roles/common/files/bootstrap.sh

+#/bin/bash
+set -e
+
+BINDIR="/usr/local/bin"
+
+cd $BINDIR
+
+if [[ -e $BINDIR/.bootstrapped ]]; then
+  exit 0
+fi
+
+PYPY_VERSION=2.4.0
+
+wget -O - https://bitbucket.org/pypy/pypy/downloads/pypy-$PYPY_VERSION-linux64.tar.bz2 |tar -xjf -
+mv -n pypy-$PYPY_VERSION-linux64 pypy
+
+## library fixup
+mkdir -p pypy/lib
+ln -snf /lib64/libncurses.so.5.9 $BINDIR/pypy/lib/libtinfo.so.5
+
+cat > $BINDIR/python <<EOF
+#!/bin/bash
+LD_LIBRARY_PATH=$BINDIR/pypy/lib:$LD_LIBRARY_PATH exec $BINDIR/pypy/bin/pypy "\$@"
+EOF
+
+chmod +x $BINDIR/python
+$BINDIR/python --version
+
+touch $BINDIR/.bootstrapped

roles/common/files/runner

+#!/bin/bash
+BINDIR="/usr/local/bin"
+LD_LIBRARY_PATH=$BINDIR/pypy/lib:$LD_LIBRARY_PATH $BINDIR/pypy/bin/$(basename $0) $@

roles/common/tasks/calico.yml

----
-- name: Create calico release directory
-  local_action: file
-     path={{ local_release_dir }}/calico/bin
-     recurse=yes
-     state=directory
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Check if calicoctl has been downloaded
-  local_action: stat
-     path={{ local_release_dir }}/calico/bin/calicoctl
-  register: c_tar
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-# issues with get_url module and redirects, to be tested again in the near future
-- name: Download calico
-  local_action: shell
-    curl -o {{ local_release_dir }}/calico/bin/calicoctl -Ls {{ calico_download_url }}/{{ calico_version }}/calicoctl
-  when: not c_tar.stat.exists
-  register: dl_calico
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-
-- name: Download calico-kubernetes-plugin
-  local_action: get_url
-    url="{{calico_plugin_download_url}}"
-    dest="{{ local_release_dir }}/calico/bin/calico"

roles/common/tasks/flannel.yml → roles/common/tasks/download.yml

 ---
+- name: Create calico release directory
+  local_action: file
+     path={{ local_release_dir }}/calico/bin
+     recurse=yes
+     state=directory
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+- name: Check if calicoctl has been downloaded
+  local_action: stat
+     path={{ local_release_dir }}/calico/bin/calicoctl
+  register: c_tar
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+# issues with get_url module and redirects, to be tested again in the near future
+- name: Download calico
+  local_action: shell
+    curl -o {{ local_release_dir }}/calico/bin/calicoctl -Ls {{ calico_download_url }}/{{ calico_version }}/calicoctl
+  when: not c_tar.stat.exists
+  register: dl_calico
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+
+- name: Download calico-kubernetes-plugin
+  local_action: get_url
+    url="{{calico_plugin_download_url}}"
+    dest="{{ local_release_dir }}/calico/bin/calico"
+
 - name: Create flannel release directory
   local_action: file
      path={{ local_release_dir }}/flannel
@@ -37,3 +64,20 @@
   local_action: file
      path={{ local_release_dir }}/flannel/flannel-{{ flannel_version }} state=absent
   when: dl_flannel|changed
+
+- name: Create kubernetes binary directory
+  local_action: file
+     path="{{ local_release_dir }}/kubernetes/bin"
+     state=directory
+     recurse=yes
+
+- name: Download kubelet and kubectl
+  local_action: get_url
+    url="{{ kube_download_url }}/{{ item.name }}"
+    dest="{{ local_release_dir }}/kubernetes/bin"
+    sha256sum="{{ item.checksum }}"
+  with_items:
+    - name: kubelet
+      checksum: "{{ kubelet_checksum }}"
+    - name: kubectl
+      checksum: "{{ kubectl_checksum }}"

roles/common/tasks/kubernetes.yml

----
-- name: Create kubernetes binary directory
-  local_action: file
-     path="{{ local_release_dir }}/kubernetes/bin"
-     state=directory
-     recurse=yes
-
-- name: Download kubelet and kubectl
-  local_action: get_url
-    url="{{ kube_download_url }}/{{ item.name }}"
-    dest="{{ local_release_dir }}/kubernetes/bin"
-    sha256sum="{{ item.checksum }}"
-  with_items:
-    - name: kubelet
-      checksum: "{{ kubelet_checksum }}"
-    - name: kubectl
-      checksum: "{{ kubectl_checksum }}"

roles/common/tasks/main.yml

@@ -3,10 +3,24 @@
   delegate_to: localhost
   when: inventory_hostname == "{{ groups['kube-master'][0] }}"
 
-- include: pip-bootstrap.yml
+- name: "Identify init system"
+  shell: >
+    if $(pgrep systemd > /dev/null); then
+      echo systemd;
+      else echo sysvinit;
+    fi
+  always_run: True
+  register: init_system_output
 
-- name: Install httplib2 python module
-  pip:
-    executable: "{{ ansible_user_dir }}/bin/pip"
+- set_fact:
+    init_system: "{{ init_system_output.stdout }}"
+
+- name: Install debian packages requirements
+  apt:
     name: "{{ item }}"
-  with_items: pip_python_modules
+    state: latest
+  when: ansible_os_family == "Debian"
+  with_items: req_debian_pkg
+
+- include: python-bootstrap.yml
+  when: ansible_os_family not in [ "Debian", "RedHat" ]

roles/common/tasks/python-bootstrap.yml

+---
+- name: Python | Check if bootstrap is needed
+  raw: stat {{ bin_dir}}/.bootstrapped
+  register: need_bootstrap
+  ignore_errors: True
+
+- name: Python | Run bootstrap.sh
+  script: bootstrap.sh
+  when: need_bootstrap | failed
+
+- set_fact:
+    ansible_python_interpreter: "{{ bin_dir }}/python"
+
+- name: Python | Check if we need to install pip
+  shell: "{{ansible_python_interpreter}} -m pip --version"
+  register: need_pip
+  ignore_errors: True
+  changed_when: false
+  when: need_bootstrap | failed
+
+- name: Python | Copy get-pip.py
+  copy: src=get-pip.py dest=~/get-pip.py
+  when: need_pip | failed
+
+- name: Python | Install pip
+  shell: "{{ansible_python_interpreter}} ~/get-pip.py"
+  when: need_pip | failed
+
+- name: Python | Remove get-pip.py
+  file: path=~/get-pip.py state=absent
+  when: need_pip | failed
+
+- name: Python | Install pip launcher
+  copy: src=runner dest={{ bin_dir }}/pip mode=0755
+  when: need_pip | failed
+
+- name: Install required python modules
+  pip:
+    name: "{{ item }}"
+  with_items: pip_python_modules
+

roles/download/defaults/main.yml

----
-etcd_version: v2.2.2
-flannel_version: 0.5.5
-
-kube_version: v1.1.3
-kubectl_checksum: "01b9bea18061a27b1cf30e34fd8ab45cfc096c9a9d57d0ed21072abb40dd3d1d"
-kubelet_checksum: "62191c66f2d670dd52ddf1d88ef81048977abf1ffaa95ee6333299447eb6a482"
-
-calico_version: v0.13.0
-calico_plugin_version: v0.7.0
-
-etcd_download_url: "https://github.com/coreos/etcd/releases/download"
-flannel_download_url: "https://github.com/coreos/flannel/releases/download"
-kube_download_url: "https://storage.googleapis.com/kubernetes-release/release/{{ kube_version }}/bin/linux/amd64"
-calico_download_url: "https://github.com/Metaswitch/calico-docker/releases/download"
-calico_plugin_download_url: "https://github.com/projectcalico/calico-kubernetes/releases/download/{{calico_plugin_version}}/calico_kubernetes"

roles/download/tasks/calico.yml

----
-- name: Create calico release directory
-  local_action: file
-     path={{ local_release_dir }}/calico/bin
-     recurse=yes
-     state=directory
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Check if calicoctl has been downloaded
-  local_action: stat
-     path={{ local_release_dir }}/calico/bin/calicoctl
-  register: c_tar
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-# issues with get_url module and redirects, to be tested again in the near future
-- name: Download calico
-  local_action: shell
-    curl -o {{ local_release_dir }}/calico/bin/calicoctl -Ls {{ calico_download_url }}/{{ calico_version }}/calicoctl
-  when: not c_tar.stat.exists
-  register: dl_calico
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-
-- name: Download calico-kubernetes-plugin
-  local_action: get_url
-    url="{{calico_plugin_download_url}}"
-    dest="{{ local_release_dir }}/calico/bin/calico"

roles/download/tasks/flannel.yml

----
-- name: Create flannel release directory
-  local_action: file
-     path={{ local_release_dir }}/flannel
-     recurse=yes
-     state=directory
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Check if flannel release archive has been downloaded
-  local_action: stat
-     path={{ local_release_dir }}/flannel/flannel-{{ flannel_version }}-linux-amd64.tar.gz
-  register: f_tar
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-# issues with get_url module and redirects, to be tested again in the near future
-- name: Download flannel
-  local_action: shell
-    curl -o {{ local_release_dir }}/flannel/flannel-{{ flannel_version }}-linux-amd64.tar.gz -Ls {{ flannel_download_url }}/v{{ flannel_version }}/flannel-{{ flannel_version }}-linux-amd64.tar.gz
-  when: not f_tar.stat.exists
-  register: dl_flannel
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Extract flannel archive
-  local_action: unarchive
-     src={{ local_release_dir }}/flannel/flannel-{{ flannel_version }}-linux-amd64.tar.gz
-     dest={{ local_release_dir }}/flannel copy=no
-  when: dl_flannel|changed
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Pick up only flannel binaries
-  local_action: copy
-     src={{ local_release_dir }}/flannel/flannel-{{ flannel_version }}/flanneld
-     dest={{ local_release_dir }}/flannel/bin
-  when: dl_flannel|changed
-
-- name: Delete unused flannel files
-  local_action: file
-     path={{ local_release_dir }}/flannel/flannel-{{ flannel_version }} state=absent
-  when: dl_flannel|changed

roles/download/tasks/kubernetes.yml

----
-- name: Create kubernetes binary directory
-  local_action: file
-     path="{{ local_release_dir }}/kubernetes/bin"
-     state=directory
-     recurse=yes
-
-- name: Download kubelet and kubectl
-  local_action: get_url
-    url="{{ kube_download_url }}/{{ item.name }}"
-    dest="{{ local_release_dir }}/kubernetes/bin"
-    sha256sum="{{ item.checksum }}"
-  with_items:
-    - name: kubelet
-      checksum: "{{ kubelet_checksum }}"
-    - name: kubectl
-      checksum: "{{ kubectl_checksum }}"

roles/download/tasks/main.yml

----
-- include: kubernetes.yml
-- include: calico.yml
-- include: flannel.yml