Error validating proxy id
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This page describes how to secure your app with signed Cloud IAP headers.
Signed headers aren't supported for App Engine standard environment applications.What puzzling to me is the timed out error occurs on pod running in node on non-master (AWS) and pod running on master node does not have the timed out error.I want to apply the suggested workaround but have a question on how do I get the value your_cidr for --cluster-cidr?Demonstration of the missing rules: -A KUBE-POSTROUTING -m comment --comment "kubernetes service traffic requiring SNAT" -m mark --mark 0x4000/0x4000 -j MASQUERADE -A KUBE-SEP-EHDRCCD3XO3VA5ZU -s 192.168.1.4/32 -m comment --comment "default/kubernetes:https" -j KUBE-MARK-MASQ -A KUBE-SEP-EHDRCCD3XO3VA5ZU -p tcp -m comment --comment "default/kubernetes:https" -m recent --set --name KUBE-SEP-EHDRCCD3XO3VA5ZU --mask 255.255.255.255 --rsource -m tcp -j DNAT --to-destination 192.168.1.43 -A KUBE-SERVICES -d 10.96.0.10/32 -p tcp -m comment --comment "kube-system/kube-dns:dns-tcp cluster IP" -m tcp --dport 53 -j KUBE-SVC-ERIFXISQEP7F7OF4 -A KUBE-SERVICES -m comment --comment "kubernetes service nodeports; NOTE: this must be the last rule in this chain" -m addrtype --dst-type LOCAL -j KUBE-NODEPORTS -A KUBE-SVC-NPX46M4PTMTKRN6Y -m comment --comment "default/kubernetes:https" -m recent --rcheck --seconds 10800 --reap --name KUBE-SEP-EHDRCCD3XO3VA5ZU --mask 255.255.255.255 --rsource -j KUBE-SEP-EHDRCCD3XO3VA5ZU This can be fixed at runtime by modifying @damaspi's command from above, replacing --proxy-mode=userspace with --cluster-cidr=your_cidr Currently building kubeadm with the merged patch, will re-bootstrap with that and report back on it's [email protected], Thanks for responding and explanation. I'm struggling to understand a connection timed out to the apiserver from a pod.Instead, those applications should use the approach described in getting the User's Identity.
Note that Compute Engine and Kubernetes Engine health checks don't include JWT headers and Cloud IAP doesn't handle health checks.
This is returned by 'gcloud projects describe $PROJECT_ID', or in the Project Info card in Cloud Console. * @param string $backend_service_id The ID of the backend service used to access the * application.
backend_service_id: The ID of the backend service used to access the application. See https://cloud.google.com/iap/docs/signed-headers-howto * for details on how to get this value. */ function validate_jwt_from_compute_engine($iap_jwt, $cloud_project_number, $backend_service_id) function validate_jwt($iap_jwt, $expected_audience) As mentioned previously, Compute Engine and Kubernetes Engine health checks don't use JWT headers and Cloud IAP doesn't handle health checks.
You can find the project ID on the Cloud Platform Console Project info card, then run the specified commands below for each value. use Guzzle Http\Client; use Lcobucci\JWT\Parser; use Lcobucci\JWT\Validation Data; use Lcobucci\JWT\Signer\Ecdsa\Sha256; /** * Validate a JWT passed to your App Engine app by Identity-Aware Proxy.
Project number To get your project ID using the gcloud command-line tool, run the following command: affinity Cookie Ttl Sec: 0 backends: - balancing Mode: UTILIZATION capacity Scaler: 1.0 group: https:// Groups/my-group connection Draining: draining Timeout Sec: 0 creation Timestamp: '2017-04-03T.687-' description: '' enable CDN: false fingerprint: za On O4k56Cw= health Checks: - https:// Health Checks/my-hc id: 'SERVICE_ID' kind: compute#backend Service load Balancing Scheme: EXTERNAL name: my-service port: 8443 port Name: https protocol: HTTPS self Link: https:// Services/my-service session Affinity: NONE timeout Sec: 3610 import jwt import requests def validate_iap_jwt_from_app_engine(iap_jwt, cloud_project_number, cloud_project_id): """Validate a JWT passed to your App Engine app by Identity-Aware Proxy. * * @param string $iap_jwt The contents of the X-Goog-IAP-JWT-Assertion header.
See https://cloud.google.com/iap/docs/signed-headers-howto for details on how to get this value. """ expected_audience = '/projects//global/backend Services/'.format( cloud_project_number, backend_service_id) return _validate_iap_jwt(iap_jwt, expected_audience) def _validate_iap_jwt(iap_jwt, expected_audience): try: key_id = jwt.get_unverified_header(iap_jwt).get('kid') if not key_id: return (None, None, '**ERROR: no key ID**') key = get_iap_key(key_id) decoded_jwt = jwt.decode( iap_jwt, key, algorithms=[' ES256'], audience=expected_audience) return (decoded_jwt['sub'], decoded_jwt['email'], '') except (jwt.exceptions. Request Exception) as e: return (None, None, '**ERROR: JWT validation error **'.format(e)) def get_iap_key(key_id): """Retrieves a public key from the list published by Identity-Aware Proxy, re-fetching the key file if necessary. You'll need to configure your health check and app to allow the health check access.