# Cluster exporter
server {
  listen {{ env "NOMAD_ALLOC_PORT_cluster" }} ssl;
  http2 on;

  ssl_certificate /secrets/metrics.bundle.pem;
  ssl_certificate_key /secrets/metrics.bundle.pem;
  ssl_client_certificate /local/monitoring.ca.pem;
  ssl_verify_client on;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
  ssl_session_cache shared:SSL:10m;
  ssl_session_timeout 1h;
  ssl_session_tickets off;
  gzip on;
  gzip_types
    text/plain;
  gzip_vary on;

  server_tokens off;

  if ($request_method !~ ^(GET|HEAD)$ ) {
    return 405;
  }

  set $consul_token "{{ with secret "consul/creds/[[ .instance ]]-cluster-exporter" }}{{ .Data.token }}{{ end }}";

{{- range service "nomad-client" }}
  location /nomad-client/{{ .Node }} {
    proxy_pass https://{{ .Address }}:{{ .Port }}/v1/metrics?format=prometheus;
    proxy_ssl_certificate /secrets/nomad_client_bundle.pem;
    proxy_ssl_certificate_key /secrets/nomad_client_bundle.pem;
    proxy_ssl_verify on;
    proxy_ssl_name client.{{ env "NOMAD_REGION" }}.nomad;
    proxy_ssl_trusted_certificate /local/nomad_ca.crt;
  }
{{- end }}

{{- range service "nomad" }}
  {{- if .Tags | contains "http" }}
  location /nomad/{{ .Node }} {
    proxy_pass https://{{ .Address }}:{{ .Port }}/v1/metrics?format=prometheus;
    proxy_ssl_certificate /secrets/nomad_client_bundle.pem;
    proxy_ssl_certificate_key /secrets/nomad_client_bundle.pem;
    proxy_ssl_verify on;
    proxy_ssl_name server.{{ env "NOMAD_REGION" }}.nomad;
    proxy_ssl_trusted_certificate /local/nomad_ca.crt;
  }
  {{- end }}
{{- end }}

{{- range service "consul" }}
  location /consul/{{ .Node }} {
    proxy_pass https://{{ .Address }}:8501/v1/agent/metrics?format=prometheus;
    proxy_set_header X-Consul-Token $consul_token;
    proxy_ssl_certificate /secrets/consul_client_bundle.pem;
    proxy_ssl_certificate_key /secrets/consul_client_bundle.pem;
    proxy_ssl_verify off;
    proxy_ssl_trusted_certificate /local/consul_ca.crt;
  }
{{- end }}

{{- range service "vault" }}
  location /vault/{{ .Node }} {
    proxy_pass https://{{ .Address }}:{{ .Port }}/v1/sys/metrics?format=prometheus;
    proxy_ssl_verify on;
    proxy_ssl_trusted_certificate /etc/ssl/cert.pem;
    proxy_set_header X-Forwarded-For "$proxy_add_x_forwarded_for";
    proxy_set_header X-Real-IP "$remote_addr";
    proxy_set_header X-Forwarded-Proto "$scheme";
    proxy_set_header X-Scheme "$scheme";
    proxy_set_header X-Forwarded-Host "$host";
    proxy_set_header X-Forwarded-Port "$server_port";
  }
{{- end }}

  location / {
    root /usr/share/nginx/html;
    index index.html;
  }
}

# Ping exporter
server {
  listen {{ env "NOMAD_ALLOC_PORT_ping" }} ssl;
  http2 on;

  ssl_certificate /secrets/metrics.bundle.pem;
  ssl_certificate_key /secrets/metrics.bundle.pem;
  ssl_client_certificate /local/monitoring.ca.pem;
  ssl_verify_client on;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
  ssl_session_cache shared:SSL:10m;
  ssl_session_timeout 1h;
  ssl_session_tickets off;
  gzip on;
  gzip_types
    text/plain;
  gzip_vary on;

  server_tokens off;

  if ($request_method !~ ^(GET|HEAD)$ ) {
    return 405;
  }
  location /metrics {
    proxy_pass http://127.0.0.1:9427;
  }
}

# Blackbox exporter
server {
  listen {{ env "NOMAD_ALLOC_PORT_blackbox" }} ssl;
  http2 on;

  ssl_certificate /secrets/metrics.bundle.pem;
  ssl_certificate_key /secrets/metrics.bundle.pem;
  ssl_client_certificate /local/monitoring.ca.pem;
  ssl_verify_client on;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
  ssl_session_cache shared:SSL:10m;
  ssl_session_timeout 1h;
  ssl_session_tickets off;
  gzip on;
  gzip_types
    text/plain;
  gzip_vary on;

  server_tokens off;

  if ($request_method !~ ^(GET|HEAD)$ ) {
    return 405;
  }

  location / {
    proxy_pass http://127.0.0.1:9115;
  }
}

# Consul exporter
server {
  listen {{ env "NOMAD_ALLOC_PORT_consul" }} ssl;
  http2 on;

  ssl_certificate /secrets/metrics.bundle.pem;
  ssl_certificate_key /secrets/metrics.bundle.pem;
  ssl_client_certificate /local/monitoring.ca.pem;
  ssl_verify_client on;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
  ssl_session_cache shared:SSL:10m;
  ssl_session_timeout 1h;
  ssl_session_tickets off;
  gzip on;
  gzip_types
    text/plain;
  gzip_vary on;

  server_tokens off;

  if ($request_method !~ ^(GET|HEAD)$ ) {
    return 405;
  }
  location /metrics {
    proxy_pass http://127.0.0.1:9107;
  }
}