kubernetes ingresses not being observed by extension

[stokerjon]

Component(s)

extension/observer/k8sobserver

What happened?

Description

When using k8s_observer with receiver creator and setting observe_ingresses: true it would be expected that it would start to create recievers based off of ingresses available in the cluster.

having a quick look it looks like the code to enable observing ingresess is missing from extension/observer/k8sobserver/extension.go

Steps to Reproduce

create a colloctor with the provided config

Expected Result

receiver creator would create receivers for ingresses in the cluster

Actual Result

ingresses are not observed and receiver creator does nothing

Collector version

v1.15.0/v0.109.0

Environment information

Environment

OS: amazon linux
kubernetes: v1.30

OpenTelemetry Collector configuration

config:
    extensions:
      k8s_observer:
        auth_type: serviceAccount
        observe_pods: false
        observe_ingresses: true
    exporters:
      debug:
        verbosity: normal
        sampling_initial: 1
        sampling_thereafter: 1
    processors:
    receivers:
      receiver_creator:
        watch_observers:
          - k8s_observer
        receivers:
          httpcheck:
            rule: type == "k8s.ingress"
            config:
              config:
                targets:
                  - endpoint: "https://`host`/`path`"
                    method: GET
                collection_interval: 10s
    service:
      telemetry:
        logs:
          level: "DEBUG"
          development: true
          encoding: "json"
      extensions:
        - k8s_observer
      pipelines:
        metrics:
          exporters:
            - debug
          processors: []
          receivers:
            - receiver_creator

Log output

{"level":"info","ts":1726843193.1351163,"caller":"service@v0.109.0/service.go:129","msg":"Setting up own telemetry..."}
{"level":"warn","ts":1726843193.1352572,"caller":"service@v0.109.0/service.go:196","msg":"service::telemetry::metrics::address is being deprecated in favor of service::telemetry::metrics::readers","stacktrace":"go.opentelemetry.io/collector/service.logsAboutMeterProvider\n\tgo.opentelemetry.io/collector/service@v0.109.0/service.go:196\ngo.opentelemetry.io/collector/service.New\n\tgo.opentelemetry.io/collector/service@v0.109.0/service.go:143\ngo.opentelemetry.io/collector/otelcol.(*Collector).setupConfigurationComponents\n\tgo.opentelemetry.io/collector/otelcol@v0.109.0/collector.go:183\ngo.opentelemetry.io/collector/otelcol.(*Collector).Run\n\tgo.opentelemetry.io/collector/otelcol@v0.109.0/collector.go:282\ngo.opentelemetry.io/collector/otelcol.NewCommand.func1\n\tgo.opentelemetry.io/collector/otelcol@v0.109.0/command.go:36\ngithub.com/spf13/cobra.(*Command).execute\n\tgithub.com/spf13/cobra@v1.8.1/command.go:985\ngithub.com/spf13/cobra.(*Command).ExecuteC\n\tgithub.com/spf13/cobra@v1.8.1/command.go:1117\ngithub.com/spf13/cobra.(*Command).Execute\n\tgithub.com/spf13/cobra@v1.8.1/command.go:1041\nmain.runInteractive\n\tgithub.com/open-telemetry/opentelemetry-collector-releases/contrib/main.go:49\nmain.run\n\tgithub.com/open-telemetry/opentelemetry-collector-releases/contrib/main_others.go:10\nmain.main\n\tgithub.com/open-telemetry/opentelemetry-collector-releases/contrib/main.go:42\nruntime.main\n\truntime/proc.go:272"}
{"level":"info","ts":1726843193.135332,"caller":"service@v0.109.0/telemetry.go:98","msg":"Serving metrics","address":":8888","metrics level":"Normal"}
{"level":"info","ts":1726843193.1354373,"caller":"builders/builders.go:26","msg":"Development component. May change in the future.","kind":"exporter","data_type":"metrics","name":"debug"}
{"level":"debug","ts":1726843193.1357343,"caller":"builders/builders.go:24","msg":"Beta component. May change in the future.","kind":"receiver","name":"receiver_creator","data_type":"metrics"}
{"level":"debug","ts":1726843193.1357844,"caller":"builders/extension.go:48","msg":"Alpha component. May change in the future.","kind":"extension","name":"k8s_observer"}
{"level":"info","ts":1726843193.1560295,"caller":"service@v0.109.0/service.go:213","msg":"Starting otelcol-contrib...","Version":"0.109.0","NumCPU":8}
{"level":"info","ts":1726843193.156081,"caller":"extensions/extensions.go:39","msg":"Starting extensions..."}
{"level":"info","ts":1726843193.1561005,"caller":"extensions/extensions.go:42","msg":"Extension is starting...","kind":"extension","name":"k8s_observer"}
{"level":"info","ts":1726843193.1561198,"caller":"extensions/extensions.go:59","msg":"Extension started.","kind":"extension","name":"k8s_observer"}
{"level":"info","ts":1726843193.1562421,"caller":"service@v0.109.0/service.go:239","msg":"Everything is ready. Begin running and processing data."}

Additional context

No response

[github-actions]

Pinging code owners:

• extension/observer/k8sobserver: @rmfitzpatrick @dmitryax

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[bacherfl]

Hi @stokerjon I also just looked into this and seems you are right - the config for enabling the Ingress observation does not seem to be considered when creating the K8s resource informers - right now, only pods, nodes and services are observed. I'd be happy to work on a PR to fix that

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• extension/observer/k8sobserver: @dmitryax @ChrsMark

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[stokerjon]

This is fixed now, thanks

[ChrsMark]

Thank's @bacherfl for the fix!