Fixes #450: Fix pihole-exporter for all scenarios and add prometheus_monitor_prometheus.

Author: geerlingguy

example.config.yml

@@ -26,6 +26,7 @@ monitoring_ping_hosts:  # [URL];[HUMAN_READABLE_NAME]
   - https://www.apple.com/;apple.com
 
 # Prometheus configuration.
+prometheus_monitor_prometheus: false
 prometheus_node_exporter_targets:
   - 'nodeexp:9100'
 prometheus_extra_scrape_configs: ''

templates/pi-hole-docker-compose.yml.j2

@@ -64,7 +64,7 @@ services:
   pihole-exporter:
     container_name: pihole-exporter
     image: ekofr/pihole-exporter:latest
-    hostname: '{{ pihole_hostname }}-exporter'
+    hostname: 'pihole-exporter'
     ports:
       - "9617:9617"
     environment:

templates/prometheus.yml.j2

@@ -10,10 +10,12 @@ rule_files:
   - 'alert.rules'
 
 scrape_configs:
+{% if prometheus_monitor_prometheus %}
   - job_name: 'prometheus'
     scrape_interval: 5s
     static_configs:
       - targets: ['localhost:9090']
+{% endif %}
 
   - job_name: 'speedtest'
     metrics_path: /metrics
@@ -72,11 +74,12 @@ scrape_configs:
   - job_name: 'node'
     static_configs:
       - targets: {{ prometheus_node_exporter_targets | to_yaml }}
-  {% if pihole_enable %}
-  - job_name: 'pihole-exporter'
+
+{% if pihole_enable %}
+  - job_name: '{{ pihole_hostname }}'
     static_configs:
-      - targets: ['pihole:9617']
-  {% endif %}
+      - targets: ['{{ pihole_hostname }}:9617']
+{% endif %}
 
 {% filter indent(width=2,first=True) %}
 {{ prometheus_extra_scrape_configs }}