Watchtower: First pass at metrics support.

Closes #318
saltyorg · Jan 8, 2024 · 6220432 · 6220432
1 parent 895bf71
commit 6220432
Showing 1 changed file with 54 additions and 0 deletions.
diff --git a/roles/watchtower/defaults/main.yml b/roles/watchtower/defaults/main.yml
@@ -17,6 +17,8 @@ watchtower_instances: ["watchtower"]
 # Settings
 ################################
 
+watchtower_metrics_enable: "false"
+watchtower_metrics_external: "false"
 watchtower_poll_interval: "43200"
 
 ################################
@@ -28,6 +30,42 @@ watchtower_paths_location: "{{ server_appdata_path }}/{{ watchtower_paths_folder
 watchtower_paths_folders_list:
   - "{{ watchtower_paths_location }}"
 
+################################
+# Web
+################################
+
+watchtower_metrics_web_subdomain: "{{ watchtower_name }}-metrics"
+watchtower_metrics_web_domain: "{{ user.domain }}"
+watchtower_metrics_web_port: "8080"
+watchtower_metrics_host: "{{ lookup('vars', watchtower_name + '_metrics_web_subdomain', default=watchtower_metrics_web_subdomain)
+                        + '.' + lookup('vars', watchtower_name + '_metrics_web_domain', default=watchtower_metrics_web_domain) }}"
+
+################################
+# DNS
+################################
+
+watchtower_metrics_dns_record: "{{ lookup('vars', watchtower_name + '_metrics_web_subdomain', default=watchtower_metrics_web_subdomain) }}"
+watchtower_metrics_dns_zone: "{{ lookup('vars', watchtower_name + '_metrics_web_domain', default=watchtower_metrics_web_domain) }}"
+watchtower_metrics_dns_proxy: "{{ dns.proxied }}"
+
+################################
+# Traefik
+################################
+
+watchtower_metrics_traefik_sso_middleware: ""
+watchtower_metrics_traefik_middleware_default: "{{ traefik_default_middleware
+                                              + (',' + lookup('vars', watchtower_name + '_metrics_traefik_sso_middleware', default=watchtower_metrics_traefik_sso_middleware)
+                                                if (lookup('vars', watchtower_name + '_metrics_traefik_sso_middleware', default=watchtower_metrics_traefik_sso_middleware) | length > 0)
+                                                else '') }}"
+watchtower_metrics_traefik_middleware_custom: ""
+watchtower_metrics_traefik_middleware: "{{ watchtower_metrics_traefik_middleware_default
+                                      + (',' + watchtower_metrics_traefik_middleware_custom
+                                        if (not watchtower_metrics_traefik_middleware_custom.startswith(',') and watchtower_metrics_traefik_middleware_custom | length > 0)
+                                        else watchtower_metrics_traefik_middleware_custom) }}"
+watchtower_metrics_traefik_certresolver: "{{ traefik_default_certresolver }}"
+watchtower_metrics_traefik_router: "{{ lookup('vars', watchtower_name + '_metrics_web_subdomain', default=watchtower_metrics_web_subdomain) }}"
+
+
 ################################
 # Docker
 ################################
@@ -47,6 +85,7 @@ watchtower_docker_envs_default:
   TZ: "{{ tz }}"
   WATCHTOWER_CLEANUP: "true"
   WATCHTOWER_POLL_INTERVAL: "{{ watchtower_poll_interval }}"
+  WATCHTOWER_HTTP_API_METRICS: "{{ 'true' if watchtower_metrics_enable else omit }}"
 watchtower_docker_envs_custom: {}
 watchtower_docker_envs: "{{ lookup('vars', watchtower_name + '_docker_envs_default', default=watchtower_docker_envs_default)
                          | combine(lookup('vars', watchtower_name + '_docker_envs_custom', default=watchtower_docker_envs_custom)) }}"
@@ -81,9 +120,24 @@ watchtower_docker_hosts: "{{ docker_hosts_common
 
 # Labels
 watchtower_docker_labels_default: {}
+watchtower_docker_labels_metrics:
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}-http.entrypoints": "web" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}-http.service": "{{ lookup("vars", watchtower_name + "_metrics_web_subdomain", default=watchtower_metrics_web_subdomain) }}" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}-http.rule": "Host(`{{ watchtower_metrics_host }}`)" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}-http.middlewares": "{{ traefik_default_middleware_http }}" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}-http.priority": "20" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.entrypoints": "websecure" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.service": "{{ lookup("vars", watchtower_name + "_metrics_web_subdomain", default=watchtower_metrics_web_subdomain) }}" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.rule": "Host(`{{ watchtower_metrics_host }}`)" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.tls.options": "securetls@file" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.tls.certresolver": "{{ watchtower_metrics_traefik_certresolver }}" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.middlewares": "{{ watchtower_metrics_traefik_middleware }}" }'
+  - '{ "traefik.http.routers.{{ watchtower_metrics_traefik_router }}.priority": "20" }'
+  - '{ "traefik.http.services.{{ watchtower_metrics_traefik_router }}.loadbalancer.server.port": "{{ watchtower_metrics_web_port }}" }'
 watchtower_docker_labels_custom: {}
 watchtower_docker_labels: "{{ docker_labels_common
                            | combine(lookup('vars', watchtower_name + '_docker_labels_default', default=watchtower_docker_labels_default))
+                           | combine(lookup('vars', watchtower_name + '_docker_labels_metrics', default=watchtower_docker_labels_metrics) if (watchtower_metrics_enable and watchtower_metrics_external))
                            | combine(lookup('vars', watchtower_name + '_docker_labels_custom', default=watchtower_docker_labels_custom)) }}"
 
 # Hostname