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pod.yaml
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# MIT License
#
# Copyright (c) 2023 Matheus Pimenta
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# This file is not only a core part of our test automation in this project,
# but also an example of how to configure Pods in a cluster where the emulator
# is deployed. Use this as reference for how to configure your production Pods.
# ServiceAccount configuration is the exact same of Workload Identity Federation for GKE.
apiVersion: v1
kind: ServiceAccount
metadata:
name: test-impersonated
namespace: default
annotations:
# If you want to impersonate a GCP Service Account, you must set this annotation.
# Impersonation is required for using the Identity API (to get Google OIDC Tokens
# for the impersonated GCP Service Account):
# GET /computeMetadata/v1/instance/service-accounts/default/identity
iam.gke.io/gcp-service-account: [email protected]
---
# If you are granting direct resource access, the annotation is not needed. Some GCP services
# may have limitations and not support direct resource access. See docs:
# * https://cloud.google.com/iam/docs/workload-identity-federation-with-kubernetes#use-wlif
# * https://cloud.google.com/iam/docs/federated-identity-supported-services#list
# The Identity API is not supported by this method.
apiVersion: v1
kind: ServiceAccount
metadata:
name: test
namespace: default
---
apiVersion: v1
kind: Pod
metadata:
name: <POD_NAME>
namespace: default
spec:
serviceAccountName: <SERVICE_ACCOUNT> # Use the ServiceAccount created above.
# This DNS record is required because the Google libraries hardcode the metadata server
# address as the hostname "metadata.google.internal". Sometimes they also hardcode the
# IP address. Sometimes they only hardcode the IP address, in which case this setting
# would not be needed. It all depends on what library your Pod is using. Test it!
hostAliases:
- hostnames: [metadata.google.internal]
ip: 169.254.169.254
################################################################################
# Note: All the configuration below is test-only and not needed in production. #
################################################################################
restartPolicy: Never
hostNetwork: <HOST_NETWORK>
dnsPolicy: ClusterFirstWithHostNet
containers:
- name: test
image: ghcr.io/matheuscscp/gke-metadata-server/test@<GO_TEST_DIGEST>
<NODE_SELECTOR>