Monitoring sidecar and gateways using prometheus

Consul
2

I think I did something along the lines of this… Anything you can use?

Nomad:

group {
  # blah, blah..
  network {
    mode = "bridge"
    port "metrics_envoy" {to = 9102}

service {
  # blah, blah..
  meta {
    # Tag for prometheus scrape-targeting via consul (envoy)
    metrics_port_envoy = "${NOMAD_HOST_PORT_metrics_envoy}"
  }
  connect {
    sidecar_service {
      proxy {
        config {
          # Expose metrics for prometheus (envoy)
          envoy_prometheus_bind_addr = "0.0.0.0:9102"
        }

Prometheus:

# blah, blah..
scrape_configs:
- job_name: consul-connect-envoy
  consul_sd_configs:
  - server: 'http://172.17.0.1:8500'
  relabel_configs:
  - source_labels: [__meta_consul_service]
    regex: (.+)-sidecar-proxy
    action: drop
  - source_labels: [__meta_consul_service_metadata_metrics_port_envoy]
    regex: (.+)
    action: keep
  - source_labels: [__address__,__meta_consul_service_metadata_metrics_port_envoy]
    regex: ([^:]+)(?::\d+)?;(\d+)
    replacement: ${1}:${2}
    target_label: __address__

EDIT:
“$${NOMAD_HOST_PORT_metrics_envoy}” should be ${NOMAD_HOST_PORT_metrics_envoy}"