Fix the prometheus default configuration template. Fix the systemd unit file.

prometheus/tasks/main.yml

@@ -37,7 +37,7 @@
       when: ansible_service_mgr != 'systemd'
 
     - name: Install the prometheus server systemd unit
-      copy: src=prometheus.systemd dest=/etc/systemd/system/prometheus.service mode=0644 owner=root group=root
+      template: src=prometheus.systemd dest=/etc/systemd/system/prometheus.service mode=0644 owner=root group=root
       when: ansible_service_mgr == 'systemd'
       notify: systemd reload
 

prometheus/templates/prometheus.default.j2

@@ -5,5 +5,5 @@ PROMETHEUS_DATADIR={{ prometheus_home }}/data
 PROMETHEUS_LOGLEVEL={{ prometheus_loglevel }}
 PROMETHEUS_CONF={{ prometheus_confdir }}/prometheus.yml
 PROMETHEUS_OPTS="{{ prometheus_opts }}"
-
+PROMETHEUS_STARTUP_OPTS="--config.file={{ prometheus_confdir }}/prometheus.yml --storage.tsdb.path={{ prometheus_home }}/data {{ prometheus_opts }} --log.level={{ prometheus_loglevel }}"
 

prometheus/templates/prometheus.systemd

@@ -8,7 +8,7 @@ Type=simple
 User={{ prometheus_user }}
 Group={{ prometheus_user }}
 EnvironmentFile=/etc/default/prometheus
-ExecStart=${PROMETHEUS_CMD} --config.file=${PROMETHEUS_CONF} --storage.tsdb.path=${PROMETHEUS_DATADIR} --log.level=${PROMETHEUS_LOGLEVEL} ${PROMETHEUS_OPTS}
+ExecStart={{ prometheus_cmd }} $PROMETHEUS_STARTUP_OPTS
 Restart=on-failure
 
 [Install]

prometheus/templates/prometheus.yml.j2

@@ -1,4 +1,3 @@
-# my global config
 global:
   scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
   evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
@@ -26,13 +25,4 @@ scrape_configs:
     # scheme defaults to 'http'.
 
     static_configs:
-      - targets: ['localhost:9090'], 'localhost:9100']
-        labels:
-          group: 'Prometheus Server'
-
-  - job_name: 'node'
-
-    static_configs:
-      - targets: [ 'localhost:9100']
-        labels:
-          group: 'node'
+      - targets: ['localhost:9090']