Traefik 指标适用于 Prometheus，但 Grafana 仪表板为空

Question

I have configured the Trafeik(v1.7.15) and Prometheus operator with stable HELM chart (chart version 8.2.4) .

But however I can't see any metrics data from Grafana dashboards and they were empty.

Also I can see the metrics coming with POD IP:8080 port with a curl command. Refer the following metrics extract and few important configuration manifests.

Also I can see that trafeik service monitor is in UP state from Prometheus and same strategy I have done for Mongo/Postgres/Rabbit MQ metrics and those grafana dashboards are with rich set of data representation and working fine.

So highly appreciate if some one can guide me on right track of fixing and displaying Trafeik ingress controller metrics from grafana ? Also let me know the cause of this?

I am using following Grafana dashboards and none of shows data. Few dashboard ID's - 4475 , 8214 , 11741 , 6293 .

THANK YOU

Trafeik Configurations:

Deployment YAML arguments

    ports:
    - name: http
      containerPort: 80
    - name: admin
      containerPort: 8080
    - name: https
      containerPort: 443
    args:
    #- --api
    - --web
    - --web.metrics.prometheus
    - --kubernetes
    - --logLevel=INFO
    - --configfile=/config/traefik.toml
    volumeMounts:
    - mountPath: /config
      name: config
    - mountPath: /ssl
      name: ssl

Configmap TOML File

  traefik.toml: |
    # traefik.toml
    logLevel = "INFO"
    defaultEntryPoints = ["http","https"]
    [entryPoints]
      [entryPoints.http]
      address = ":80"
      [entryPoints.http.redirect]
      entryPoint = "https"
      [entryPoints.https]
      address = ":443"
      [entryPoints.https.tls]
        [[entryPoints.https.tls.certificates]]
        CertFile = "/ssl/tls.crt"
        KeyFile = "/ssl/tls.key"
    [metrics]
      [metrics.prometheus]
        buckets = [0.1,0.3,1.2,5.0]

Prometheus service monitor YAML

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
    name: traefik-sm
    labels:
        release: my-prometheus
spec:
    selector:
      matchLabels:
        k8s-app: traefik-ingress-lb
    namespaceSelector:
      any: true
    endpoints:
    - port: admin-ui
      name: traefik-ingress-service
      targetPort: 8080
      path: /metrics
      interval: 10s
      honorLabels: true

Trafeik metrics with CURL

ubuntu@k8s-node1:~$ curl http://10.96.1.141:8080/metrics
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 1.3978e-05
go_gc_duration_seconds{quantile="0.25"} 1.86e-05
go_gc_duration_seconds{quantile="0.5"} 2.3194e-05
go_gc_duration_seconds{quantile="0.75"} 5.2525e-05
go_gc_duration_seconds{quantile="1"} 0.090356709
go_gc_duration_seconds_sum 12.978064956
go_gc_duration_seconds_count 3774
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 64
# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
# TYPE go_memstats_alloc_bytes gauge
go_memstats_alloc_bytes 8.322768e+06
# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
# TYPE go_memstats_alloc_bytes_total counter
go_memstats_alloc_bytes_total 2.7448991752e+10
# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
# TYPE go_memstats_buck_hash_sys_bytes gauge
go_memstats_buck_hash_sys_bytes 1.579943e+06
# HELP go_memstats_frees_total Total number of frees.
# TYPE go_memstats_frees_total counter
go_memstats_frees_total 2.5932029e+08
# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started.
# TYPE go_memstats_gc_cpu_fraction gauge
go_memstats_gc_cpu_fraction 0.00037814152889298634
# HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata.
# TYPE go_memstats_gc_sys_bytes gauge
go_memstats_gc_sys_bytes 2.4064e+06
# HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use.
# TYPE go_memstats_heap_alloc_bytes gauge
go_memstats_heap_alloc_bytes 8.322768e+06
# HELP go_memstats_heap_idle_bytes Number of heap bytes waiting to be used.
# TYPE go_memstats_heap_idle_bytes gauge
go_memstats_heap_idle_bytes 5.3641216e+07
# HELP go_memstats_heap_inuse_bytes Number of heap bytes that are in use.
# TYPE go_memstats_heap_inuse_bytes gauge
go_memstats_heap_inuse_bytes 1.261568e+07
# HELP go_memstats_heap_objects Number of allocated objects.
# TYPE go_memstats_heap_objects gauge
go_memstats_heap_objects 54120
# HELP go_memstats_heap_released_bytes Number of heap bytes released to OS.
# TYPE go_memstats_heap_released_bytes gauge
go_memstats_heap_released_bytes 4.636672e+07
# HELP go_memstats_heap_sys_bytes Number of heap bytes obtained from system.
# TYPE go_memstats_heap_sys_bytes gauge
go_memstats_heap_sys_bytes 6.6256896e+07
# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.
# TYPE go_memstats_last_gc_time_seconds gauge
go_memstats_last_gc_time_seconds 1.5858102844353108e+09
# HELP go_memstats_lookups_total Total number of pointer lookups.
# TYPE go_memstats_lookups_total counter
go_memstats_lookups_total 0
# HELP go_memstats_mallocs_total Total number of mallocs.
# TYPE go_memstats_mallocs_total counter
go_memstats_mallocs_total 2.5937441e+08
# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.
# TYPE go_memstats_mcache_inuse_bytes gauge
go_memstats_mcache_inuse_bytes 3472
# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.
# TYPE go_memstats_mcache_sys_bytes gauge
go_memstats_mcache_sys_bytes 16384
# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.
# TYPE go_memstats_mspan_inuse_bytes gauge
go_memstats_mspan_inuse_bytes 180000
# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.
# TYPE go_memstats_mspan_sys_bytes gauge
go_memstats_mspan_sys_bytes 245760
# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.
# TYPE go_memstats_next_gc_bytes gauge
go_memstats_next_gc_bytes 1.6043632e+07
# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.
# TYPE go_memstats_other_sys_bytes gauge
go_memstats_other_sys_bytes 666961
# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.
# TYPE go_memstats_stack_inuse_bytes gauge
go_memstats_stack_inuse_bytes 851968
# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.
# TYPE go_memstats_stack_sys_bytes gauge
go_memstats_stack_sys_bytes 851968
# HELP go_memstats_sys_bytes Number of bytes obtained from system.
# TYPE go_memstats_sys_bytes gauge
go_memstats_sys_bytes 7.2024312e+07
# HELP go_threads Number of OS threads created
# TYPE go_threads gauge
go_threads 11
# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
# TYPE process_cpu_seconds_total counter
process_cpu_seconds_total 553.04
# HELP process_max_fds Maximum number of open file descriptors.
# TYPE process_max_fds gauge
process_max_fds 1.048576e+06
# HELP process_open_fds Number of open file descriptors.
# TYPE process_open_fds gauge
process_open_fds 11
# HELP process_resident_memory_bytes Resident memory size in bytes.
# TYPE process_resident_memory_bytes gauge
process_resident_memory_bytes 6.9451776e+07
# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
# TYPE process_start_time_seconds gauge
process_start_time_seconds 1.58573313806e+09
# HELP process_virtual_memory_bytes Virtual memory size in bytes.
# TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes 1.90099456e+08
# HELP traefik_backend_server_up Backend server is up, described by gauge value of 0 or 1.
# TYPE traefik_backend_server_up gauge
traefik_backend_server_up{backend="auth-jooqa.abc.com/",url="http://192.168.22.77:8180"}
# HELP traefik_config_last_reload_failure Last config reload failure
# TYPE traefik_config_last_reload_failure gauge
traefik_config_last_reload_failure 0
# HELP traefik_config_last_reload_success Last config reload success
# TYPE traefik_config_last_reload_success gauge
traefik_config_last_reload_success 1.585741581e+09
# HELP traefik_config_reloads_failure_total Config failure reloads
# TYPE traefik_config_reloads_failure_total counter
traefik_config_reloads_failure_total 0
# HELP traefik_config_reloads_total Config reloads
# TYPE traefik_config_reloads_total counter
traefik_config_reloads_total 4

Answer 1

There are too few metrics exported by traefik

If you check your exported metrics, there are too few:

$ curl -s http://10.96.1.141:8080/metrics | grep -P '^traefik_'

traefik_backend_server_up{backend="auth-jooqa.abc.com/",url="http://192.168.22.77:8180"}
traefik_config_last_reload_failure 0
traefik_config_last_reload_success 1.585741581e+09
traefik_config_reloads_failure_total 0
traefik_config_reloads_total 4

Hard to find ready-made grafana dashboard with your set of metrics

Let's grep expr tag in mentioned dashboards ( 4475 , 8214 , 11741 , [6293]( https://grafana.com/grafana/dashboards/6293

for dashboard_url in 'https://grafana.com/api/dashboards/4475/revisions/4/download' 'https://grafana.com/api/dashboards/6293/revisions/2/download' 'https://grafana.com/api/dashboards/8214/revisions/1/download' 'https://grafana.com/api/dashboards/11741/revisions/1/download' ; do
  echo "\t = Dashboard: $dashboard_url = "
  curl -s $dashboard_url | jq '.panels[].targets[0].expr' | grep -Po 'traefik_[a-z_]+' | sort |uniq
done
))

The command above return list of traefik_* metrics used in expr of appropriate dashboard:

         = Dashboard: https://grafana.com/api/dashboards/4475/revisions/4/download =
traefik_backend_request_duration_seconds_sum
traefik_backend_requests_total
traefik_backend_server_up
traefik_config_reloads_total
traefik_entrypoint_requests_total
         = Dashboard: https://grafana.com/api/dashboards/6293/revisions/2/download =
traefik_backend_open_connections
traefik_backend_request_duration_seconds_sum
traefik_backend_requests_total
traefik_entrypoint_open_connections
traefik_entrypoint_request_duration_seconds_sum
traefik_entrypoint_requests_total
         = Dashboard: https://grafana.com/api/dashboards/8214/revisions/1/download =
traefik_backend_request_duration_seconds_sum
traefik_backend_requests_total
traefik_entrypoint_request_duration_seconds_sum
traefik_entrypoint_requests_total
         = Dashboard: https://grafana.com/api/dashboards/11741/revisions/1/download =
traefik_entrypoint_open_connections
traefik_entrypoint_request_duration_seconds_sum
traefik_entrypoint_requests_total
traefik_service_open_connections
traefik_service_request_duration_seconds_count
traefik_service_request_duration_seconds_sum
traefik_service_requests_total

As you can see, only two of 5 metrics are used.

Let's try to find appropriate dashboard

Since these 4 dashboards aren't appropriate for your metric set, lets try to find appropriate dashboard in GitHub :

• traefik_backend_server_up : 8 code results
• traefik_backend_server_up or traefik_config_reloads_total : 11 code results
• traefik_config_last_reload_failure OR traefik_config_last_reload_success OR traefik_config_reloads_failure_total : 1 code results

Suggestions

So, id suggest:

• either try to update traefik to expose more actual metric set
• or create your own dashboard, it's easy

PS grafana-dashboard-builder for easier creation of Grafana dashboards

There is an open-source tool for easier creation of dashboards:

jakubplichta/grafana-dashboard-builder: Generate Grafana dashboards with YAML

Currently it supports three data-stores:

• Graphite
• Prometheus
• InfluxDB