[Feature] JSON logging pod by simple rule.

[patsevanton]

Hello! Thanks for Ingress-Nginx.

JSON logging pod by simple rule. For example:

    ## Define Log Format
    # Use logfmt (default) or json logging
    logFormat: logfmt

Users who want use json logging set logFormat: json

Is there currently another issue associated with this? No Does it require a particular kubernetes version? No If this is actually about documentation, uncomment the following block No

[k8s-ci-robot]

This issue is currently awaiting triage.

If Ingress contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[patsevanton]

I have helm chart with JSON logging. Values:

controller:
  config:
    log-format-escape-json: "true"
    log-format-upstream: '{"time": "$time_iso8601", "remote_addr": "$proxy_protocol_addr", "x_forwarded_for": "$proxy_add_x_forwarded_for", "request_id": "$req_id",
      "remote_user": "$remote_user", "bytes_sent": $bytes_sent, "request_time": $request_time, "status": $status, "vhost": "$host", "request_proto": "$server_protocol",
      "path": "$uri", "request_query": "$args", "request_length": $request_length, "duration": $request_time,"method": "$request_method", "http_referrer": "$http_referer",
      "http_user_agent": "$http_user_agent" }'

But could enable JSON loggin without set log-format-upstream ? For example:

controller:
  config:
    log-format-escape-json: "true"

[github-actions[bot]]

This is stale, but we won't close it automatically, just bare in mind the maintainers may be busy with other tasks and will reach your issue ASAP. If you have any question or request to prioritize this, please reach #ingress-nginx-dev on Kubernetes Slack.

[longwuyuan]

https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#log-format-upstream

/close

[k8s-ci-robot]

@longwuyuan: Closing this issue.

In response to [this](https://github.com/kubernetes/ingress-nginx/issues/9819#issuecomment-2343444045): >https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#log-format-upstream > >/close Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.