feat: add uptime monitors with datadog synthetics

Author: JacobCoffee

pillar/dev/secrets/datadog.sls

@@ -0,0 +1,2 @@
+datadog_api_key: deadbeefdeadbeefdeadbeefdeadbeefdeadbeef
+datadog_app_key: deadbeefdeadbeefdeadbeefdeadbeefdeadbeef

salt/datadog/synthetics.sls

@@ -0,0 +1,76 @@
+{% set minion_id = grains['id'] %}
+{% set fqdn = grains['fqdn'] %}
+{% set api_key = pillar.get('datadog_api_key') %}
+{% set app_key = pillar.get('datadog_app_key') %}
+{% set datadog_locations = salt['http.query']('https://api.datadoghq.com/api/v1/synthetics/locations', header_list=['DD-API-KEY: ' + api_key, 'DD-APPLICATION-KEY: ' + app_key], decode=True) %}
+{% set existing_monitors = salt['http.query']('https://api.datadoghq.com/api/v1/synthetics/tests', header_list=['DD-API-KEY: ' + api_key, 'DD-APPLICATION-KEY: ' + app_key], decode=True) %}
+{% set monitor_name = minion_id + ' HTTP Health' %}
+{% set monitor_exists = existing_monitors.get('dict', {}).get('tests', []) | selectattr('name', 'equalto', monitor_name) | list | length > 0 %}
+
+#notable this fails to capture multi-host minions (bugs has bugs.python, bugs.jython, bugs.roundup and
+# codespeed has speed.python and speed.pypy)
+{% set web_roles = ['loadbalancer', 'docs', 'downloads', 'hg', 'moin', 'planet', 'bugs', 'buildbot', 'codespeed', 'pythontest'] %}
+{% set matched_roles = [] %}
+{% for role in web_roles %}
+  {% if salt["match.compound"](pillar["roles"][role]["pattern"]) %}
+    {% set _ = matched_roles.append(role) %}
+  {% endif %}
+{% endfor %}
+{% set is_web_minion = matched_roles|length > 0 %}
+{% set is_loadbalancer = 'loadbalancer' in matched_roles %}
+
+# hit the haproxy status page for loadbalancers or the root for other web minions
+# web minions also haev _haproxy_status endpoint but im not sure if that needs to be checked?
+{% set health_url = "https://" + fqdn + ("/_haproxy_status" if is_loadbalancer else "/") %}
+
+{% if is_web_minion and api_key and app_key and not monitor_exists %}
+create-synthetics-monitor-{{ minion_id }}:
+  http.query:
+    - name: https://api.datadoghq.com/api/v1/synthetics/tests
+    - method: POST
+    - header_list:
+        - "DD-API-KEY: {{ api_key }}"
+        - "DD-APPLICATION-KEY: {{ app_key }}"
+        - "Content-Type: application/json"
+    - data: |
+        {
+          "name": "{{ minion_id }} HTTP Health",
+          "type": "api",
+          "subtype": "http",
+          "config": {
+            "request": {
+              "url": "{{ health_url }}",
+              "method": "GET",
+              "timeout": 30
+            },
+            "assertions": [
+              {
+                "type": "statusCode",
+                "operator": "is",
+                "target": 200
+              },
+              {
+                "type": "responseTime",
+                "operator": "lessThan", 
+                "target": 2000
+              }
+            ]
+          },
+          "locations": {{ datadog_locations.get('dict', {}).get('locations', []) | map(attribute='id') | list | tojson }},
+          "options": {
+            "tick_every": 60,
+            "min_failure_duration": 180,
+            "min_location_failed": 5,
+            "retry": {
+              "count": 1,
+              "interval": 300
+            }
+          },
+          "message": "{{ minion_id }} is down in 5 or more locations! @pagerduty-Datadog",
+          "tags": [
+            "minion_id:{{ minion_id }}",
+            "auto_created:salt.synthetics.sls"
+          ]
+        }
+    - status: 200
+{% endif %}

salt/top.sls

@@ -17,6 +17,8 @@ base:
     - tls
     - rsyslog
     - datadog
+    - datadog.synthetics
+    - secrets.datadog
     - base.motd
     - base.swap