Graham McIntire
8466e4590f
Replaces the vendored Go exporter with two pre-built upstream images: - quay.io/prometheuscommunity/json-exporter:v0.7.0 maps the gateway JSON into prometheus metrics via JSONPath. The G4AR keys signal blocks as "5g" / "4g" (digit-prefixed), which the k8s client-go JSONPath dialect only reaches via bracket-with-single-quote notation. - nginxinc/nginx-unprivileged:1.27-alpine-slim sidecar rewrites GET /metrics → GET /probe?module=tmhi&target=http://192.168.12.1/... so the existing kubernetes-services scrape job picks it up over the apiserver proxy with no Prometheus-side config changes. Avoiding caddy here: its binary carries cap_net_bind_service file caps, which the kernel refuses to exec under no_new_privs as a non-root user. Dashboard "Gateway up" panel now reads up{service="tmobile-exporter"} (Prometheus's built-in scrape-success gauge) since json_exporter's /probe endpoint does not emit probe_success.
102 lines
3.7 KiB
YAML
102 lines
3.7 KiB
YAML
apiVersion: v1
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kind: ConfigMap
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metadata:
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name: tmobile-exporter-config
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namespace: monitoring
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data:
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# nginx reverse-proxies /metrics to json_exporter's /probe endpoint with the
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# gateway target baked in, so the existing Prometheus kubernetes-services
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# scrape job picks this up via a normal /metrics path annotation.
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nginx.conf: |
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worker_processes 1;
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pid /tmp/nginx.pid;
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error_log /dev/stderr warn;
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events { worker_connections 64; }
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http {
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access_log off;
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client_body_temp_path /tmp/nginx-client 1 2;
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proxy_temp_path /tmp/nginx-proxy 1 2;
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fastcgi_temp_path /tmp/nginx-fcgi 1 2;
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uwsgi_temp_path /tmp/nginx-uwsgi 1 2;
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scgi_temp_path /tmp/nginx-scgi 1 2;
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server {
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listen 9099;
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location = /healthz { return 200 "ok\n"; }
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location = /metrics {
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proxy_pass http://127.0.0.1:7979/probe?module=tmhi&target=http://192.168.12.1/TMI/v1/gateway?get=all;
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}
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location / { return 404; }
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}
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}
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# json_exporter mapping for the G4AR's /TMI/v1/gateway?get=all response.
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# JSONPath uses k8s client-go dialect, which requires bracket+single-quote
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# notation for digit-prefixed keys (.signal['5g']). YAML single-quoted
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# strings escape literal single quotes by doubling them.
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# allow_missing_key keeps the scrape clean when blocks are absent (the
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# G4AR omits the 4g block entirely on 5G-only deployments).
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json-exporter.yml: |
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modules:
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tmhi:
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metrics:
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- name: tmobile_gateway_uptime_seconds
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path: '{ .time.upTime }'
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help: Gateway uptime in seconds.
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- name: tmobile_gateway
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type: object
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path: '{ .device }'
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help: Static gateway metadata; value is always 1.
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labels:
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serial: '{ .serial }'
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manufacturer: '{ .manufacturer }'
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model: '{ .model }'
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name: '{ .name }'
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hardware_version: '{ .hardwareVersion }'
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software_version: '{ .softwareVersion }'
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mac: '{ .macId }'
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values:
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info: 1
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- name: tmobile_gateway_rsrp
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path: '{ .signal[''5g''].rsrp }'
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allow_missing_key: true
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help: Reference Signal Received Power (dBm).
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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- name: tmobile_gateway_rsrq
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path: '{ .signal[''5g''].rsrq }'
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allow_missing_key: true
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help: Reference Signal Received Quality (dB).
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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- name: tmobile_gateway_rssi
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path: '{ .signal[''5g''].rssi }'
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allow_missing_key: true
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help: Received Signal Strength Indicator (dBm).
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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- name: tmobile_gateway_snr
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path: '{ .signal[''5g''].sinr }'
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allow_missing_key: true
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help: Signal-to-noise ratio (dB).
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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- name: tmobile_gateway_bars
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path: '{ .signal[''5g''].bars }'
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allow_missing_key: true
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help: Signal strength in bars (0-5).
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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- name: tmobile_gateway_channel_id
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path: '{ .signal[''5g''].cid }'
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allow_missing_key: true
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help: Cellular channel ID.
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labels:
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type: "5g"
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band: '{ .signal[''5g''].bands[0] }'
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