Add ansible provisioning (#122)

* first ansible skeleton

* first commit of ansible installation of vulnwhisperer outside docker

* first ansible skeleton

* first commit of ansible installation of vulnwhisperer outside docker

* refactor the ansible role a bit

* update readme, add fail validation step to provision.yml and fix
typo when calling a logging funciton

ansible/roles/elastic.elasticsearch/tasks/xpack/elasticsearch-xpack-install.yml

@@ -0,0 +1,68 @@
+---
+
+#Test if feature is installed
+- name: Test if x-pack is installed
+  shell: "{{es_home}}/bin/elasticsearch-plugin list | grep x-pack"
+  become: yes
+  register: x_pack_installed
+  changed_when: False
+  failed_when: "'ERROR' in x_pack_installed.stdout"
+  check_mode: no
+  ignore_errors: yes
+  environment:
+    CONF_DIR: "{{ conf_dir }}"
+    ES_PATH_CONF: "{{ conf_dir }}"
+    ES_INCLUDE: "{{ instance_default_file }}"
+
+
+#Remove X-Pack if installed and its not been requested or the ES version has changed
+- name: Remove x-pack plugin
+  become: yes
+  command: "{{es_home}}/bin/elasticsearch-plugin remove x-pack"
+  register: xpack_state
+  failed_when: "'ERROR' in xpack_state.stdout"
+  changed_when: xpack_state.rc == 0
+  when: x_pack_installed.rc == 0 and (not es_enable_xpack or es_version_changed)
+  notify: restart elasticsearch
+  environment:
+    CONF_DIR: "{{ conf_dir }}"
+    ES_PATH_CONF: "{{ conf_dir }}"
+    ES_INCLUDE: "{{ instance_default_file }}"
+
+
+#Install plugin if not installed, or the es version has changed (so removed above), and its been requested
+- name: Download x-pack from url
+  get_url: url={{ es_xpack_custom_url }} dest=/tmp/x-pack-{{ es_version }}.zip
+  when: (x_pack_installed.rc == 1 or es_version_changed) and (es_enable_xpack and es_xpack_custom_url is defined)
+
+- name: Install x-pack plugin from local
+  become: yes
+  command: >
+    {{es_home}}/bin/elasticsearch-plugin install --silent --batch file:///tmp/x-pack-{{ es_version }}.zip
+  register: xpack_state
+  changed_when: xpack_state.rc == 0
+  when: (x_pack_installed.rc == 1 or es_version_changed) and (es_enable_xpack and es_xpack_custom_url is defined)
+  notify: restart elasticsearch
+  environment:
+    CONF_DIR: "{{ conf_dir }}"
+    ES_PATH_CONF: "{{ conf_dir }}"
+    ES_INCLUDE: "{{ instance_default_file }}"
+
+- name: Delete x-pack zip file
+  file: dest=/tmp/x-pack-{{ es_version }}.zip state=absent
+  when: es_xpack_custom_url is defined
+
+- name: Install x-pack plugin from elastic.co
+  become: yes
+  command: >
+    {{es_home}}/bin/elasticsearch-plugin install --silent --batch x-pack
+  register: xpack_state
+  failed_when: "'ERROR' in xpack_state.stdout"
+  changed_when: xpack_state.rc == 0
+  when: (x_pack_installed.rc == 1 or es_version_changed) and (es_enable_xpack and es_xpack_custom_url is not defined)
+  notify: restart elasticsearch
+  environment:
+    CONF_DIR: "{{ conf_dir }}"
+    ES_PATH_CONF: "{{ conf_dir }}"
+    ES_INCLUDE: "{{ instance_default_file }}"
+    ES_JAVA_OPTS: "{% if es_proxy_host is defined and es_proxy_host != '' %}-Dhttp.proxyHost={{ es_proxy_host }} -Dhttp.proxyPort={{ es_proxy_port }} -Dhttps.proxyHost={{ es_proxy_host }} -Dhttps.proxyPort={{ es_proxy_port }}{% endif %}"