add initial tasks and defaults

Signed-off-by: Jakub Sokołowski <jakub@status.im>

defaults/main.yml

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+---
+geth_expo_cont_image: statusteam/geth_exporter:latest
+geth_expo_cont_name: geth-exporter
+geth_expo_cont_addr: '0.0.0.0'
+geth_expo_cont_port: 9200
+
+# consul catalog data
+geth_expo_consul_name: 'geth-exporter'
+geth_expo_consul_addr: '{{ ansible_local.tinc.vpn_ip }}'
+geth_expo_consul_extra_tag: '{{ geth_expo_cont_name }}'
+geth_expo_consul_tags:
+  - '{{ geth_expo_consul_extra_tag }}'
+  - metrics
+  - geth
+
+cont_state: started
+cont_recreate: false
+cont_restart: false

tasks/consul.yml

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+---
+- name: Create Consul service definition
+  include_role: name=consul-service
+  vars:
+    consul_config_name: '{{ geth_expo_cont_name | replace("-", "_") }}'
+    consul_services:
+      - name: '{{ geth_expo_consul_name }}'
+        port: '{{ geth_expo_cont_port }}'
+        address: '{{ geth_expo_consul_addr }}'
+        tags: '{{ geth_expo_consul_tags }}'
+        meta:
+          container: '{{ geth_expo_cont_name }}'
+        checks:
+          - id: '{{ geth_expo_consul_name }}'-health
+            name: 'geth-exporter healthcheck'
+            type: http
+            http: 'http://localhost:{{ geth_expo_cont_port }}/health'

tasks/container.yml

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+---
+- name: 'Start container: {{ geth_expo_cont_name }}'
+  docker_container:
+    name: '{{ geth_expo_cont_name }}'
+    image: '{{ geth_expo_cont_image }}'
+    user: root
+    pull: true
+    restart_policy: always
+    state: '{{ cont_state }}'
+    recreate: '{{ cont_recreate }}'
+    restart: '{{ cont_restart }}'
+    entrypoint: geth_exporter 
+    volumes_from: '{{ cont_name }}'
+    command: |
+      -ipc /data/geth.ipc
+      -port 9200
+    ports:
+      - '{{ geth_expo_cont_port }}:9200/tcp'

tasks/main.yml

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+---
+- import_tasks: container.yml
+- import_tasks: consul.yml