Prometheus, heavy memory calls removed (#27)

scripts/prometheus/config/prometheus/prometheus.yml

@@ -0,0 +1,37 @@
+# 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.
+  # scrape_timeout is set to the global default (10s).
+
+# Alertmanager configuration
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets:
+      # - alertmanager:9093
+
+# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
+rule_files:
+  # - "first_rules.yml"
+  # - "second_rules.yml"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+    static_configs:
+    - targets: ['localhost:9090']
+
+  - job_name: openethereum
+    scrape_interval: 15s
+    metric_relabel_configs:
+      - source_labels: [__name__]
+        target_label: __name__
+        replacement: "oe_${1}"
+    static_configs:
+    - targets:
+      - openethereum:3000