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Thanks for reaching out, Prathamesh. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

workload identity for GCP and self hosted egress only for audio recording

Thanks — I’m responding to your request about using GCP Workload Identity with a self‑hosted LiveKit egress that only records audio. What’s confirmed • LiveKit egress can upload exported media to a “specified cloud storage bucket.” • The documented examples and enterprise auth features show AWS S3 (access keys and an AssumeRole option). GCP/GCS and workload identity are not documented or confirmed in the sources I have. What that means for your scenario • GCS + Workload Identity is not confirmed as a native, documented upload/auth option for LiveKit egress. • Because you’re using self‑hosted egress and only need audio recordings, there are practical workarounds you can use to achieve secure uploads to GCS with Workload Identity. Options to consider • Use a post‑upload transfer (recommended if direct GCS support is unavailable) ◦ Configure self‑hosted egress to write audio files locally (or to an HTTP endpoint you control). ◦ Run a short process (container or sidecar) on the same host that uses GCP Workload Identity to obtain credentials and uploads files to GCS. This keeps long‑lived keys out of your environment and uses workload identity bindings on GKE/GCE. • Use an intermediate storage endpoint that LiveKit supports ◦ If you have an S3-compatible gateway or proxy that forwards to GCS, LiveKit can upload with S3 credentials and the gateway forwards to GCS. This may require additional infrastructure. • Custom upload hook (if you can run an HTTP receiver) ◦ If LiveKit egress can POST or send the final file to an HTTP endpoint you control, that endpoint can use Workload Identity to push to GCS. (Confirm whether your egress build can call a webhook or HTTP upload target; if not, the local-file approach is simpler.) Clarifying questions to narrow the best approach 1. Are you running self‑hosted egress on GKE/GCE where Workload Identity (or Workload Identity Federation) can be used directly by a sidecar process? 2. Can you configure egress to write audio files to local disk (or to an HTTP endpoint you control)? If yes, which path or endpoint do you plan to use? 3. Are you on an enterprise plan that might allow extended authentication options or custom integrations? 4. Do you prefer a fully automated transfer (upload as soon as file is ready) or a periodic batch uploader? What I can help with next • If you confirm your environment (GKE/GCE vs other), I will outline a step‑by‑step approach for the local sidecar uploader using Workload Identity (including container flow and sample commands). • If you prefer the S3‑gateway approach, I can describe tradeoffs and an example architecture. • If you can confirm whether egress can send to an HTTP endpoint in your build, I’ll draft a simple webhook uploader flow that uses Workload Identity to upload to GCS. Tell me which option sounds best or answer the clarifying questions and I’ll provide concrete steps.

Env is GKE, with self hosted livekit-egress,

containers:
    - args:
        - '--web'
        - '--templates-host=localhost:7980'
        - >-
          --chrome-args=--enable-logging --v=3 --no-sandbox --disable-gpu
          --enable-webrtc-logging=1 --enable-logging=debug
      env:
        - name: EGRESS_CONFIG_BODY
          valueFrom:
            configMapKeyRef:
              key: config.yaml
              name: livekit-egress
        - name: GOOGLE_APPLICATION_CREDENTIALS
          value: /etc/workload-identity/credential-configuration.json
        - name: LIVEKIT_EGRESS_ENABLE_NVENC
          value: 'false'
        - name: NVIDIA_VISIBLE_DEVICES
          value: none
        - name: NVIDIA_DRIVER_CAPABILITIES
      image: 'livekit/egress:v1.8.6'

Thanks — I’m responding to your message about using GCP Workload Identity with your self‑hosted LiveKit egress on GKE for audio‑only recordings. Your pod snippet shows you set

GOOGLE_APPLICATION_CREDENTIALS

to

/etc/workload-identity/credential-configuration.json

, which is the right pattern for Workload Identity / ADC-style authentication. To confirm everything and give step‑by‑step fixes if anything’s off, please share a few details and logs so I can validate your setup: 1. How is

/etc/workload-identity/credential-configuration.json

mounted into the pod? ◦ Is it a ConfigMap, Secret, or a projected volume? Paste the volume and volumeMount YAML for the egress container. 1. Which Kubernetes ServiceAccount does the pod use, and does that ServiceAccount have the Workload Identity annotation? ◦ I’m looking for

<http://iam.gke.io/gcp-service-account|iam.gke.io/gcp-service-account>: <GCP_SERVICE_ACCOUNT_EMAIL>

on the K8s ServiceAccount manifest. 1. Which GCP service account is being impersonated and what IAM roles does it have on the target bucket? ◦ Confirm it has at least

roles/storage.objectCreator

on the bucket (or equivalent permissions) and give the target bucket name. 1. How are you starting the egress (egress request payload)? ◦ Paste the JSON/CLI/gRPC payload you use to start the audio recording that includes the

output

section. Confirm you specify

gcs

as the output. 1. Are you seeing errors in the egress pod logs when upload is attempted? ◦ If yes, paste the relevant log lines (timestamp + error text). If not, let me know whether uploads appear to start but no file shows up in GCS. 1. Network access and environment checks: ◦ Can the pod reach the GKE metadata server and storage.googleapis.com? Any NetworkPolicy or egress firewall rules that might block outbound access? 1. Confirm runtime details: ◦ Egress image version (you showed

livekit/egress:v1.8.6

— confirm if that’s what’s running) and which egress type you use for audio-only (room composite, track egress, etc.). What I’ll do once you share those: • Verify the correct mount method and file contents needed for workload identity ADC usage. • Confirm the ServiceAccount annotation and IAM permissions required to write to GCS. • Inspect egress request payload for correct

gcs

output fields and path variables. • Diagnose any errors from logs and provide exact remediation steps (volume/annotation fixes, IAM policy snippets, and a minimal uploader fallback if needed). If you prefer, I can also draft the exact YAML snippets you’ll need for: • Projected credential/config mount for workload identity, • ServiceAccount annotation, • Minimal egress request JSON for audio-only upload to GCS. Tell me which of the above info you can paste here first (start with the volume/volumeMount and ServiceAccount annotation) and I’ll take it from there. Sources: Backup Egress Recordings | Universal Egress | livekit/livekit_composite | DeepWiki

Thanks — I’m looking at the volumeMounts you provided. That’s helpful. I’ll walk through what to check next and which exact bits I still need to confirm Workload Identity + GCS uploads will work for your self‑hosted egress (audio only). What to verify right away • The mountPath

/etc/workload-identity

is present — good. I need to confirm how that volume is defined (volume type and contents). • Ensure the mounted file at

/etc/workload-identity/credential-configuration.json

exists inside the container and contains the service account / credential-configuration used for Workload Identity. • Confirm the pod is using a Kubernetes ServiceAccount that has the Workload Identity annotation linking to the GCP service account. Please paste these next items (or confirm them) so I can validate and give exact fixes: 1) Volume definition for

workload-identity-credential-configuration

• Share the corresponding

volumes:

YAML stanza from the Pod/Deployment so I can see whether it’s a ConfigMap, Secret, or projected volume. 2) Kubernetes ServiceAccount used by the Pod and its annotations • Share the ServiceAccount manifest or the annotation line. I’m looking for: ◦ The Pod’s

serviceAccountName:

value ◦ The ServiceAccount annotation

<http://iam.gke.io/gcp-service-account|iam.gke.io/gcp-service-account>: <GCP_SERVICE_ACCOUNT_EMAIL>

3) Contents of the credential configuration file (or a sanitized example) • Confirm the file mounted at

/etc/workload-identity/credential-configuration.json

is the Workload Identity credential configuration JSON (not a long-lived service account key). If you’re comfortable, paste the JSON structure (mask emails/IDs if needed). 4) Target GCS bucket and IAM role details • Confirm which GCP service account is being impersonated and that it has at least

roles/storage.objectCreator

on the target bucket. Provide the bucket name (or confirm it) so I can reference expected path/permissions. 5) Egress request payload you use to start the audio recording • Paste the JSON/gRPC/CLI payload that includes the

output

section so I can verify you’re specifying

gcs

and the `bucket`/`path` fields correctly. 6) Any relevant egress pod logs when an upload is attempted • If uploads are failing, paste the error lines from the egress pod logs (timestamps + error text). If you haven’t seen logs, let me know whether uploads appear to succeed locally but nothing reaches GCS. Quick checks you can run inside the running pod • Exec into the pod and confirm the file exists: ◦

ls -l /etc/workload-identity

◦

cat /etc/workload-identity/credential-configuration.json

(or

head -n 50

to avoid huge output) • Confirm application default credentials flow works from the container: ◦

gcloud auth application-default print-access-token

(if gcloud is present) or use a small script that attempts to write a test object with `curl`/`gsutil` (if available). If those commands aren’t installed, we can add a simple debug sidecar. If you prefer, I can provide: • Example YAML snippets for the projected/config mount + ServiceAccount annotation for Workload Identity. • A minimal egress request JSON for audio-only uploads to GCS. • A short sidecar uploader example that uses Workload Identity to upload files written to a shared volume. Which of the items above can you share first? If you want the example YAML immediately, tell me and I’ll draft the exact manifests tailored to your current mounts and image.

Thanks — this is great detail. I’m responding to your volume/volumeMounts and projected token/configMap configuration for Workload Identity and self‑hosted LiveKit egress on GKE. Everything you shared shows you’re very close to a correct setup for uploading audio-only recordings to GCS using Workload Identity. Below I’ll list the checks, a few items I still need, and concrete next steps and example manifests you can apply or adapt. Quick summary of what I see • You mount a projected ServiceAccount token at /var/run/service-account (good). • You mount a ConfigMap at /etc/workload-identity containing your Workload Identity credential configuration JSON (good). • The token projected source uses the Workload Identity pool audience (looks correct). • The pod has access to the K8s serviceaccount token via the kube-api-access projected volume. What to verify now (quick checks) 1. Inside the running pod, confirm the credential file exists and looks like a workload-identity configuration (not a long‑lived key): ◦ ls -l /etc/workload-identity ◦ head -n 50 /etc/workload-identity/credential-configuration.json 1. Confirm the Pod is using the intended Kubernetes ServiceAccount: ◦ Check the pod spec has serviceAccountName: <name> ◦ Confirm that ServiceAccount has the annotation: iam.gke.io/gcp-service-account: <GCP_SERVICE_ACCOUNT_EMAIL> 1. Confirm the GCP service account has the required IAM on the target bucket: ◦ At minimum: roles/storage.objectCreator on the bucket (or equivalent bucket write permissions). 1. Confirm egress request uses GCS in its output block (bucket and path fields set). If you can run quick commands, try these inside the pod to sanity-check access: • curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" (should return a token if metadata path accessible) • If gsutil or gcloud are available, try a dry write to the bucket to confirm permissions. What I still need from you to validate fully • The Kubernetes ServiceAccount name used by the Pod and its manifest (so I can confirm the Workload Identity annotation). • The content (sanitized) or structure of the ConfigMap

livekit-egress-wif-credential-config

or at least a confirmation that it contains a workload-identity credential configuration JSON (not a full service-account key). • The egress request payload (JSON/gRPC) you use to start audio recording (the

output

section showing

gcs

fields). If you prefer, paste: • The ServiceAccount manifest (or at least the annotations), • The

livekit-egress-wif-credential-config

ConfigMap (sanitized). Example manifests & notes you can use or compare against 1) ServiceAccount with Workload Identity annotation (example)

apiVersion: v1
kind: ServiceAccount
metadata:
  name: livekit-egress-sa
  namespace: your-namespace
  annotations:
    <http://iam.gke.io/gcp-service-account|iam.gke.io/gcp-service-account>: <mailto:your-gcp-sa@project.iam.gserviceaccount.com|your-gcp-sa@project.iam.gserviceaccount.com>

2) Example ConfigMap structure for credential configuration (what LiveKit expects as ADC configuration) • The ConfigMap should contain a JSON file named

credential-configuration.json

(or whatever path you set) with the workload identity configuration. It typically references impersonation configuration, not a private key JSON. 3) Egress output JSON example for audio-only to GCS

{
  "output": {
    "gcs": {
      "bucket": "your-bucket-name",
      "path": "recordings/${room_name}/${timestamp}.mp3"
    }
  },
  "audioOnly": true,
  "room": "your-room",
  "egressType": "room_composite"
}

• Make sure

gcs

is provided in the output and the bucket name is correct. Common pitfalls and how to fix them • Using a service account key JSON (long-lived) instead of a workload-identity credential configuration: ensure the file under /etc/workload-identity is the correct format for ADC/workload identity and not a full key file. • Missing ServiceAccount annotation: the K8s SA must have the

<http://iam.gke.io/gcp-service-account|iam.gke.io/gcp-service-account>

annotation pointing to the GCP SA. • Missing IAM role on GCP SA: grant

roles/storage.objectCreator

on the bucket. • Metadata server/network blocked: ensure the pod can reach the metadata server and storage.googleapis.com (no restrictive NetworkPolicy). If uploads fail, what logs I’ll need • The egress pod logs around the time of upload attempts (error lines). Paste timestamps + error text. • Any stack traces referencing authentication or permission denied when attempting the upload. If you want, I can: • Draft the exact ConfigMap + ServiceAccount YAML using your current names and paths. • Validate your egress request JSON and make corrections. • Provide a small sidecar uploader example that watches a shared directory (emptyDir) and uploads to GCS using Workload Identity, if you prefer the local-file-then-sidecar pattern. Which would you like next? • Paste the ServiceAccount manifest and/or the ConfigMap contents and I’ll verify them and give the exact fixes, or • I can draft the YAMLs now using the names you’ve shown (e.g., ConfigMap name

livekit-egress-wif-credential-config

, mount path

/etc/workload-identity

).

ALl these accesses work, what to go next?

Great — thanks for confirming the access checks work. I’m responding with clear next steps you can take now to complete validation and start successful audio-only uploads to GCS from your self-hosted LiveKit egress on GKE. 1) Verify egress request uses GCS output (minimal audio-only example) • Send an egress request that specifies

gcs

in the

output

and sets audio-only. Example JSON (adapt names/paths):

{
  "egressType": "room_composite",
  "room": "your-room",
  "audioOnly": true,
  "output": {
    "gcs": {
      "bucket": "your-bucket-name",
      "path": "recordings/${room_name}/${started_at}.mp3"
    }
  }
}

• Start the request the same way you already do (gRPC/REST/CLI). Make sure

bucket

and

path

are correct. 2) Watch egress pod logs while the job runs • Tail logs from your egress pod during the recording and after it ends: ◦ kubectl logs -f <egress-pod> • Look for lines that indicate upload started and upload succeeded (or any auth/permission errors). If you see permission denied or auth errors, paste those lines and I’ll help decode them. 3) Validate the uploaded object in GCS • Check the bucket for the expected path/object name after the job finishes. • If a file is present, confirm file size and playable audio (download and test locally). 4) Quick in-container checks if upload fails • Confirm the credential config file exists: ◦ ls -l /etc/workload-identity ◦ head -n 50 /etc/workload-identity/credential-configuration.json • Confirm the projected token is present: ◦ cat /var/run/service-account/token • Test token fetch against metadata (from inside the pod): ◦ curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" ◦ (If blocked/403, there’s either metadata access or annotation mismatch.) 5) Common issues and fixes • Missing/incorrect ServiceAccount annotation on the Kubernetes SA: ◦ Ensure ServiceAccount has: iam.gke.io/gcp-service-account: your-gcp-sa@project.iam.gserviceaccount.com • GCP SA missing bucket permission: ◦ Grant at least roles/storage.objectCreator on the target bucket to the GCP service account (or use a bucket-level IAM policy). • Using the wrong credential file format: ◦ Ensure

/etc/workload-identity/credential-configuration.json

is the workload-identity configuration (not a long-lived key). It should reference the impersonation configuration used for ADC. • Network or egress blocked: ◦ Ensure the pod can reach storage.googleapis.com and metadata endpoint. 6) If upload starts but file is incomplete or corrupted • Confirm audio encoding settings and output filename extension match what LiveKit produces (e.g.,

.mp3

,

.wav

,

.mka

). Try downloading the object and verifying it plays. • If streaming/uploading while recording, temporary files may be finalized after recording stops — wait for egress to finish. 7) Optional: add a small verification step after egress completes • Create a simple post-process job (or a sidecar) that: ◦ Watches the output (local or receives webhook), ◦ Confirms the object exists in GCS via a HEAD or metadata call, and ◦ Logs success/failure (useful for automation). What I suggest you do next (recommended short sequence) 1. Send the GCS-targeted egress request (example above). 2. Tail egress pod logs and confirm upload success or capture errors. 3. Check the GCS bucket for the object and, if missing, paste the relevant error logs here and I’ll decode them and give exact remediation steps. If you want, I can: • Provide an exact egress request tailored to the audio format you need (mp3, wav, etc.). • Help interpret any specific log errors you post. • Draft a minimal sidecar uploader or post-process check that uses Workload Identity to verify objects in GCS. Which would you like me to do next — send a tailored egress request for a particular audio format, or help debug logs you captured from a failed attempt?

2026-02-18T054123.885Z INFO egress stats/monitor.go:137 cpu available: 768.000000 max cost: 4.000000 {"nodeID": "NE_swc9SECkfYt7", "clusterID": ""} 2026-02-18T054123.890Z DEBUG egress server/server.go:141 starting service {"nodeID": "NE_swc9SECkfYt7", "clusterID": "", "version": "1.8.6"} 2026-02-18T054123.890Z DEBUG egress server/server.go:133 starting template server on address localhost:7980 {"nodeID": "NE_swc9SECkfYt7", "clusterID": ""} 2026-02-18T054123.890Z INFO egress server/server.go:147 service ready {"nodeID": "NE_swc9SECkfYt7", "clusterID": ""} 2026-02-18T055014.160Z DEBUG egress stats/monitor.go:151 cpu check {"nodeID": "NE_swc9SECkfYt7", "clusterID": "", "total": 768, "available": 768, "pending": 0, "used": 0, "activeRequests": 0, "activeWeb": 0, "required": 1, "canAccept": true} 2026-02-18T055014.662Z INFO egress server/server_rpc.go:58 request received {"nodeID": "NE_swc9SECkfYt7", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055014.665Z INFO egress server/server_rpc.go:75 request validated {"nodeID": "NE_swc9SECkfYt7", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "requestType": "room_composite", "outputType": "file", "room": "outbound-call-20260218-112008-ad6fa4aa", "request": {"RoomComposite":{"room_name":"outbound-call-20260218-112008-ad6fa4aa","audio_only":true,"Output":null,"Options":null,"file_outputs":[{"file_type":2,"filepath":"recordings/1251a2b4-84f5-4793-a2e9-19b8fb8c25e5/cfa1a3e5-9d7e-4210-b089-6c93a0a49645.ogg","Output":{"Gcp":{"bucket":"livekit-recordings-nonprod"}}}]}}} 2026-02-18T055014.696Z DEBUG egress server/main.go:177 handler launched {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055014.697Z INFO egress redis/redis.go:142 connecting to redis {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "simple": true, "addr": "redis-14764.redis-dev-west.corp.cvscaremark.com:14764"} 2026-02-18T055014.898Z DEBUG egress source/web.go:159 creating pulse sink {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055014.904Z DEBUG egress source/web.go:183 creating X display {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "display": ":1085744831", "dims": "1280x720x24"} 2026-02-18T055014.905Z DEBUG egress source/web.go:214 launching chrome {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "url": "http://localhost:7980/?layout=&amp;token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE3NzE0ODAyMTQsImlzcyI6IkFQSUtFWTY4YjBlMGMyZTA2YWVhNTEiLCJraW5kIjoiZWdyZXNzIiwibmJmIjoxNzcxMzkzODE0LCJzdWIiOiJFR19FQkhVQTJwakVvdjQiLCJ2aWRlbyI6eyJjYW5QdWJsaXNoIjpmYWxzZSwiY2FuUHVibGlzaERhdGEiOmZhbHNlLCJjYW5TdWJzY3JpYmUiOnRydWUsImhpZGRlbiI6dHJ1ZSwicmVjb3JkZXIiOnRydWUsInJvb20iOiJvdXRib3VuZC1jYWxsLTIwMjYwMjE4LTExMjAwOC1hZDZmYTRhYSIsInJvb21Kb2luIjp0cnVlfX0.jD7BRDjnbHqntOX_JUd_5yGH-hbcueXtYJ_k933sPXg&amp;url=wss%3A%2F%2Fdevservices-colo-west-livekit.corp.cvscaremark.com", "sandbox": false, "insecure": true} 00000.140400262 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00m cudaloader gstcudaloader.c169gst_cuda_load_library:[00m Could not open library libcuda.so.1, libcuda.so.1: cannot open shared object file: No such file or directory 00000.140421972 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00m nvcodec plugin.c94plugin_init:[00m Failed to load cuda library 00000.163263445 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x120000: 'AVR (Audio Visual Research)' is not mapped 00000.163280785 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x180000: 'CAF (Apple Core Audio File)' is not mapped 00000.163285035 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x100000: 'HTK (HMM Tool Kit)' is not mapped 00000.163289555 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0xc0000: 'MAT4 (GNU Octave 2.0 / Matlab 4.2)' is not mapped 00000.163293555 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0xd0000: 'MAT5 (GNU Octave 2.1 / Matlab 5.0)' is not mapped 00000.163297725 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x210000: 'MPC (Akai MPC 2k)' is not mapped 00000.163301075 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x230000: 'MPEG-1/2 Audio' is not mapped 00000.163306445 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0xe0000: 'PVF (Portable Voice Format)' is not mapped 00000.163311235 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x160000: 'SD2 (Sound Designer II)' is not mapped 00000.163317305 [36m 161[00m 0x5584d3fd1280 [33;01mWARN [00m [00;04m default gstsfelement.c97gst_sf_create_audio_template_caps:[00m format 0x190000: 'WVE (Psion Series 3)' is not mapped 2026-02-18T055015.608Z DEBUG egress gstreamer/bin.go:66 adding src audio to pipeline {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055015.609Z DEBUG egress gstreamer/bin.go:72 adding sink file to pipeline {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055015.609Z DEBUG egress pipeline/controller.go:215 waiting for start signal {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055030.975Z INFO egress source/web.go:298 chrome: END_RECORDING {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055030.975Z DEBUG egress gstreamer/state.go:75 pipeline state building -> stopping {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055030.975Z DEBUG egress gstreamer/state.go:75 pipeline state stopping -> finished {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055030.975Z DEBUG egress source/web.go:125 closing chrome {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055031.017Z DEBUG egress source/web.go:131 closing X display {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055031.022Z DEBUG egress source/web.go:138 unloading pulse module {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4"} 2026-02-18T055031.027Z DEBUG egress sink/file.go:73 removing temporary directory {"nodeID": "NE_swc9SECkfYt7", "handlerID": "EGH_oCRq2kdAkhA3", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "path": "/home/egress/tmp/EG_EBHUA2pjEov4/"} 2026-02-18T055031.034Z INFO egress service/io.go:88 egress updated {"nodeID": "NE_swc9SECkfYt7", "clusterID": "", "egressID": "EG_EBHUA2pjEov4", "requestType": "room_composite", "outputType": "file", "status": "EGRESS_ABORTED"}

Thanks — I’m looking at the logs you pasted and will walk you through focused next steps to get GCS uploads working for your audio-only self‑hosted egress. What the logs show (short) • Egress started and validated a room_composite audio-only request that targets GCS: ◦ Output shows

Gcp

with bucket

livekit-recordings-nonprod

and filepath

recordings/.../cfa1a3e5-... .ogg

. • The pipeline ran, Chrome ended recording, temp files were removed, and the egress finished with status

EGRESS_ABORTED

. • There are no explicit auth errors in the snippet you shared; most warnings are about CUDA/GStreamer plugin mappings (safe to ignore for audio-only). Because the job aborted after finalizing the file/cleanup, this suggests the recording completed locally but the upload to GCS either failed silently or was never attempted (or it failed but the error lines didn’t appear in the snippet). Let’s confirm and fix that with these targeted checks and actions. Checks to run now (quick, in this order) 1. Confirm the local artifact exists / existed ◦ Exec into the egress pod (or check the host where egress ran) and list the temp directory referenced in logs: ▪︎ ls -l /home/egress/tmp/EG_EBHUA2pjEov4/ ◦ If the file existed, note its name/size. If it’s gone (deleted) that’s expected after cleanup — but it helps confirm egress produced an output before upload. 1. Search the egress logs for upload or GCS errors ◦ Grep the full logs for

gcs

,

Gcp

,

upload

,

storage

,

permission

,

access

,

denied

,

401

,

403

,

error

around the handler/egressID timeframe: ▪︎ kubectl logs <egress-pod> | sed -n '1,200p' (or adjust range) ▪︎ kubectl logs <egress-pod> | grep -iE "gcs|gcp|upload|storage|denied|403|401|error" ◦ Paste any error lines you find and I’ll decode them. 1. Check the GCS bucket for the expected object ◦ In GCP console or with gsutil: ▪︎ gsutil ls gs://livekit-recordings-nonprod/recordings/.../ ◦ If the object is present, confirm size and that it plays. If absent, upload likely failed. 1. Confirm service account token/application default credentials used by egress at runtime ◦ From inside the pod run a quick token test: ▪︎ curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" ◦ And confirm the config and token files still readable: ▪︎ head -n 20 /etc/workload-identity/credential-configuration.json ▪︎ head -n 5 /var/run/service-account/token If the above checks find nothing obvious, try a repro with verbose logs: • Restart an egress request but increase log level (if possible) or tail logs while it runs. Watch for lines that show uploading, bytes transferred, or upload errors. Common causes and direct fixes • Missing GCS upload attempt / client not invoked ◦ Ensure the egress request output is set in the form the egress binary expects (your logs show the file_outputs form with

Gcp

— that looks correct). If you started via an API client, verify the exact JSON/gRPC payload used matches the log entry you pasted. • Permission/auth error (403/401) ◦ If you see 401/403 in logs, ensure the GCP service account being impersonated has roles/storage.objectCreator on the bucket (or bucket-level write permission). • Workload Identity config format ◦ If the mounted config is not correct for ADC/impersonation, the client may fallback or fail quietly. Confirm

/etc/workload-identity/credential-configuration.json

is the workload identity config (not a key) and the pod SA annotation is correct (you said these all work). • Network egress blocked ◦ If the pod cannot reach storage.googleapis.com, uploads will fail. Ensure no egress rules block outbound HTTPS to storage.googleapis.com. If you prefer a reliable fallback (keeps Workload Identity, minimal change) • Use local-file + uploader sidecar: ◦ Have egress write to a shared emptyDir. After egress finalizes and deletes its tmp dir, a small sidecar process (runs under same KSA with Workload Identity access) uploads files to GCS and logs success/failure. This isolates upload errors and gives clearer upload logs. What to send me next (so I can give exact remediation) • Full egress pod logs around the run (start of request -> egress end). I need lines after the pipeline finished to see upload attempts or errors. • Output of ls -l on the egress temp dir if still present (or confirm it existed prior to deletion). • The exact egress request payload you used (so I can validate the `gcp`/`Gcp` output formatting). If you want, I can: • Parse any error lines you paste and give a precise remediation. • Draft a minimal sidecar uploader (container + command) that uses Workload Identity to upload files from a shared volume to GCS and retries on failure. Which would you like me to do next — paste the fuller logs for the egressID (EG_EBHUA2pjEov4) or I can draft the sidecar uploader manifest and upload script for you to try?

The thing is for calls, even though the call is present the egress aborts before hand

Thanks — I see the problem you’re describing: the call is present but the egress job aborts before finishing and uploading. I reviewed your logs and config you shared. Below are focused, prioritized checks and next steps to find the root cause and get reliable audio-only uploads to GCS using Workload Identity. What the logs show (brief) • Egress accepted a room_composite audio-only request with a GCP output and created local temp files. • Recording finished locally and the pipeline stopped; temp directory was removed. • Final status is EGRESS_ABORTED — there are no explicit GCS auth errors in the snippet you pasted, so either upload didn’t run, failed without an obvious log line, or the service aborted before the GCS upload step. Targeted checks (do these next; they’ll narrow the cause quickly) 1. Full handler logs for that egressID ◦ Provide the complete logs for EG_EBHUA2pjEov4 from request received -> egress end (not just the excerpt). I need any lines mentioning Gcp, gcs, upload, storage, error, 401, 403, permission, or backupStorageUsed. Those lines usually appear after pipeline finalization. 1. Confirm the locally produced artifact lifecycle ◦ Immediately after a run, exec into the node/pod and check the temp dir referenced in logs: ▪︎ ls -la /home/egress/tmp/EG_EBHUA2pjEov4/ ◦ If file existed then was removed, note timestamp / filename / size. If still present, download it and confirm it plays. 1. Search logs for backup/failed upload indicators ◦ Grep the egress logs for backup-related flags/events (

backupStorageUsed

or similar). If LiveKit used backup storage it will log that or emit an egress_ended webhook later. 1. Verify GCS upload attempt from the pod (quick runtime test) ◦ From inside the egress pod, try a manual upload using the same Workload Identity context: ▪︎ curl -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" (confirm you get a token) ▪︎ If gsutil is available, try

gsutil cp <small-file> <gs://livekit-recordings-nonprod/test.txt>

▪︎ If you can’t run gsutil, do a simple authenticated PUT using a token to storage.googleapis.com or run a small Python snippet that uses ADC to upload a test file. ◦ If manual upload fails, it’s an auth/permission or network issue; paste the error. 1. Confirm GCP SA permissions + Workload Identity annotation ◦ Confirm the Kubernetes ServiceAccount annotation matches the intended GCP SA: ▪︎

<http://iam.gke.io/gcp-service-account|iam.gke.io/gcp-service-account>: <mailto:your-gcp-sa@project.iam.gserviceaccount.com|your-gcp-sa@project.iam.gserviceaccount.com>

◦ Confirm that GCP SA has

roles/storage.objectCreator

(or equivalent) on the bucket. 1. Check network egress / DNS ◦ Ensure pod can reach storage.googleapis.com (no egress firewall / NetworkPolicy blocking HTTPS). ◦ From pod:

curl -I <https://storage.googleapis.com>

should return 200/301 headers. Likely causes (based on symptoms) • Upload never attempted because the egress handler aborted before invoking the GCS uploader step (could be a transient internal error or an unexpected state). • Upload attempted but failed with permission or auth issue that didn’t surface in your pasted logs (403/401). • Network egress blocked so the uploader couldn’t reach storage.googleapis.com. • Workload Identity config is valid for token exchange, but the GCP SA lacks bucket permissions. • Egress cleaned up temp files before a delayed upload finished; upload may have failed during finalization. Immediate mitigations you can try (low friction) • Re-run a single, small test egress and tail logs continuously. Capture the entire log stream for the egressID and paste it here. I can parse it. • Try a manual upload from the running pod under the same SA to confirm Workload Identity + IAM are correct. • As a robust fallback while diagnosing, use a small uploader sidecar: ◦ Configure egress to write to a shared emptyDir (local). ◦ Sidecar (same K8s SA with Workload Identity) watches the directory and uploads finalized files to GCS with retries and verbose logging. This separates upload errors from egress lifecycle and gives clear upload logs. If you want the sidecar pattern, I can draft: • A minimal sidecar Docker command/script to upload files using ADC and retry logic. • The exact Deployment/volume YAML to share the emptyDir between egress and sidecar. What I need from you now to pinpoint the failure • Full egress pod logs for EG_EBHUA2pjEov4 (from request receive to final EGRESS_ABORTED). Paste the full log block or attach it. • Output of ls -la on the egress temp dir (for that run) or confirmation it existed and name/size if you observed it earlier. • Result of a manual upload attempt from inside the egress pod (command + error output if it fails). • Confirm the K8s ServiceAccount name used by the pod and the GCP SA email it maps to (annotation). If you paste the logs and the manual upload output, I’ll: • Identify whether the upload was attempted and why it failed (auth, network, or internal error). • Give exact fixes (IAM policy snippet, config changes, or egress request tweaks) or provide a tested sidecar uploader manifest and script to use immediately. Which do you want now — I can parse the full logs you have, or I can draft the sidecar uploader + YAML so you can test an immediate workaround while we continue debugging? Sources: Universal Egress | Backup Egress Recordings