refactor to use Docker Compose

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

defaults/main.yml

@@ -1,25 +1,20 @@
 ---
+geth_expo_service_name: 'geth'
+geth_expo_service_path: '/docker/{{ geth_expo_service_name }}'
+geth_expo_compose_path: '{{ geth_expo_service_path }}/docker-compose.exporter.yml'
+
 # source container
-geth_source_cont_name: ~
-geth_source_cont_ipc_path: '/data/geth.ipc'
+#geth_expo_source_data_path: ~
+#geth_expo_source_cont_name: ~
 
 # metrics container settings
-geth_expo_cont_image: statusteam/geth_exporter:latest
-geth_expo_cont_name: geth-exporter
+geth_expo_cont_tag: 'latest'
+geth_expo_cont_image: 'statusteam/geth_exporter:{{ geth_expo_cont_tag }}'
+geth_expo_cont_name: '{{ geth_expo_service_name }}-exporter'
 geth_expo_cont_addr: '0.0.0.0'
 geth_expo_cont_port: 9200
 
-# consul catalog data
-geth_expo_consul_id: 'geth-exporter'
-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
-
-# generic container settings
-cont_state: started
-cont_recreate: false
-cont_restart: false
+# general container management
+compose_recreate: 'smart'
+compose_state: 'present'
+compose_restart: false

tasks/consul.yml

@@ -2,17 +2,18 @@
 - name: Create Consul service definition
   include_role: name=consul-service
   vars:
-    consul_config_name: '{{ geth_expo_cont_name | replace("-", "_") }}'
+    consul_config_name: '{{ geth_expo_cont_name }}'
     consul_services:
-      - id: '{{ geth_expo_consul_id }}'
-        name: '{{ geth_expo_consul_name }}'
+      # Prometheus config expects this service name
+      - name: 'geth-exporter'
+        id: '{{ geth_expo_cont_name }}'
         port: '{{ geth_expo_cont_port }}'
-        address: '{{ geth_expo_consul_addr }}'
-        tags: '{{ geth_expo_consul_tags }}'
+        address: '{{ ansible_local.tinc.vpn_ip }}'
+        tags: ['{{ geth_expo_cont_name }}', 'metrics', 'geth']
         meta:
-          container: '{{ geth_source_cont_name | mandatory }}'
+          container: '{{ geth_expo_source_cont_name | mandatory }}'
         checks:
-          - id: '{{ geth_expo_consul_name }}-health'
+          - id: '{{ geth_expo_cont_name }}-health'
             name: 'geth-exporter healthcheck'
             type: http
             http: 'http://localhost:{{ geth_expo_cont_port }}/health'

tasks/container.yml

@@ -1,18 +1,24 @@
 ---
-- 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: '{{ geth_source_cont_name | mandatory }}'
-    command: |
-      -ipc {{ geth_source_cont_ipc_path }}
-      -port 9200
-    ports:
-      - '{{ geth_expo_cont_port }}:9200/tcp'
+- name: Create compose file
+  template:
+    src: 'docker-compose.yml.j2'
+    dest: '{{ geth_expo_compose_path }}'
+    owner: 'dockremap'
+    group: 'docker'
+    mode: 0640
+
+# Take into account additional docker-compose.yml files.
+- name: Find all Docker Compose files
+  find:
+    paths: '{{ geth_expo_service_path }}'
+    patterns: 'docker-compose*.yml'
+    recurse: false
+  register: geth_expo_all_compose
+
+- name: Create containers
+  docker_compose:
+    project_src: '{{ geth_expo_service_path }}'
+    files: '{{ geth_expo_all_compose.files | map(attribute="path") | list }}'
+    state: '{{ compose_state }}'
+    restarted: '{{ compose_restart }}'
+    recreate: '{{ compose_recreate | default("smart") }}'

templates/docker-compose.yml.j2

@@ -0,0 +1,18 @@
+---
+version: '3.7'
+services:
+  metrics:
+    container_name: '{{ geth_expo_cont_name }}'
+    image: '{{ geth_expo_cont_image }}'
+    user: 'root'
+    restart: 'always'
+    entrypoint: 'geth_exporter' 
+    ports:
+      - '{{ geth_expo_cont_port }}:{{ geth_expo_cont_port }}/tcp'
+    volumes:
+      - '{{ geth_expo_source_data_path | mandatory }}:/data'
+    command: |
+      -ipc /data/geth.ipc
+      -port {{ geth_expo_cont_port }}
+    depends_on:
+      - 'geth'