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### GCP
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In order to give **access to the Github Actions** from a Github repo to a GCP **service account** the following steps are needed:
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- **Create the Service Account** to access from github actions with the **desired permissions:**
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GCP **सेवा खाते** को Github repo से **Github Actions** तक पहुँच देने के लिए निम्नलिखित चरणों की आवश्यकता है:
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- **सेवा खाता बनाएं** ताकि इच्छित अनुमतियों के साथ github actions से पहुँच प्राप्त हो:
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```bash
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projectId=FIXME
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gcloud config set project $projectId
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@@ -24,134 +23,121 @@ gcloud services enable iamcredentials.googleapis.com
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# Give permissions to SA
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gcloud projects add-iam-policy-binding $projectId \
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--member="serviceAccount:$saId" \
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--role="roles/iam.securityReviewer"
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--member="serviceAccount:$saId" \
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--role="roles/iam.securityReviewer"
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```
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- Generate a **new workload identity pool**:
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- एक **नया वर्कलोड आइडेंटिटी पूल** बनाएं:
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```bash
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# Create a Workload Identity Pool
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poolName=wi-pool
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gcloud iam workload-identity-pools create $poolName \
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--location global \
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--display-name $poolName
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--location global \
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--display-name $poolName
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poolId=$(gcloud iam workload-identity-pools describe $poolName \
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--location global \
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--format='get(name)')
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--location global \
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--format='get(name)')
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```
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- Generate a new **workload identity pool OIDC provider** that **trusts** github actions (by org/repo name in this scenario):
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- एक नया **वर्कलोड आइडेंटिटी पूल OIDC प्रदाता** उत्पन्न करें जो **विश्वास करता है** github actions (इस परिदृश्य में org/repo नाम द्वारा):
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```bash
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attributeMappingScope=repository # could be sub (GitHub repository and branch) or repository_owner (GitHub organization)
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gcloud iam workload-identity-pools providers create-oidc $poolName \
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--location global \
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--workload-identity-pool $poolName \
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--display-name $poolName \
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--attribute-mapping "google.subject=assertion.${attributeMappingScope},attribute.actor=assertion.actor,attribute.aud=assertion.aud,attribute.repository=assertion.repository" \
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--issuer-uri "https://token.actions.githubusercontent.com"
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--location global \
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--workload-identity-pool $poolName \
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--display-name $poolName \
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--attribute-mapping "google.subject=assertion.${attributeMappingScope},attribute.actor=assertion.actor,attribute.aud=assertion.aud,attribute.repository=assertion.repository" \
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--issuer-uri "https://token.actions.githubusercontent.com"
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providerId=$(gcloud iam workload-identity-pools providers describe $poolName \
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--location global \
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--workload-identity-pool $poolName \
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--format='get(name)')
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--location global \
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--workload-identity-pool $poolName \
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--format='get(name)')
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```
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- Finally, **allow the principal** from the provider to use a service principal:
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- अंत में, **प्रदाता से प्रिंसिपल को सेवा प्रिंसिपल का उपयोग करने की अनुमति दें**:
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```bash
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gitHubRepoName="repo-org/repo-name"
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gcloud iam service-accounts add-iam-policy-binding $saId \
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--role "roles/iam.workloadIdentityUser" \
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--member "principalSet://iam.googleapis.com/${poolId}/attribute.${attributeMappingScope}/${gitHubRepoName}"
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--role "roles/iam.workloadIdentityUser" \
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--member "principalSet://iam.googleapis.com/${poolId}/attribute.${attributeMappingScope}/${gitHubRepoName}"
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```
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> [!WARNING]
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> Note how in the previous member we are specifying the **`org-name/repo-name`** as conditions to be able to access the service account (other params that makes it **more restrictive** like the branch could also be used).
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> ध्यान दें कि पिछले सदस्य में हम सेवा खाते तक पहुँचने के लिए **`org-name/repo-name`** को शर्तों के रूप में निर्दिष्ट कर रहे हैं (अन्य पैरामीटर जो इसे **अधिक प्रतिबंधात्मक** बनाते हैं जैसे शाखा का भी उपयोग किया जा सकता है)।
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>
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> However it's also possible to **allow all github to access** the service account creating a provider such the following using a wildcard:
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> हालाँकि, यह भी संभव है कि **सभी github को सेवा खाते तक पहुँचने की अनुमति दें** एक प्रदाता बनाकर जैसे कि निम्नलिखित एक वाइल्डकार्ड का उपयोग कर:
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<pre class="language-bash"><code class="lang-bash"># Create a Workload Identity Pool
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poolName=wi-pool2
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gcloud iam workload-identity-pools create $poolName \
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--location global \
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--display-name $poolName
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--location global \
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--display-name $poolName
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poolId=$(gcloud iam workload-identity-pools describe $poolName \
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--location global \
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--format='get(name)')
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--location global \
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--format='get(name)')
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gcloud iam workload-identity-pools providers create-oidc $poolName \
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--project="${projectId}" \
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--location="global" \
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--workload-identity-pool="$poolName" \
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--display-name="Demo provider" \
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--attribute-mapping="google.subject=assertion.sub,attribute.actor=assertion.actor,attribute.aud=assertion.aud" \
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--issuer-uri="https://token.actions.githubusercontent.com"
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--project="${projectId}" \
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--location="global" \
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--workload-identity-pool="$poolName" \
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--display-name="Demo provider" \
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--attribute-mapping="google.subject=assertion.sub,attribute.actor=assertion.actor,attribute.aud=assertion.aud" \
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--issuer-uri="https://token.actions.githubusercontent.com"
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providerId=$(gcloud iam workload-identity-pools providers describe $poolName \
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--location global \
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--workload-identity-pool $poolName \
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--format='get(name)')
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--location global \
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--workload-identity-pool $poolName \
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--format='get(name)')
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<strong># CHECK THE WILDCARD
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</strong>gcloud iam service-accounts add-iam-policy-binding "${saId}" \
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--project="${projectId}" \
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--role="roles/iam.workloadIdentityUser" \
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--project="${projectId}" \
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--role="roles/iam.workloadIdentityUser" \
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<strong> --member="principalSet://iam.googleapis.com/${poolId}/*"
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</strong></code></pre>
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> [!WARNING]
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> In this case anyone could access the service account from github actions, so it's important always to **check how the member is defined**.\
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> It should be always something like this:
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> इस मामले में कोई भी github actions से सेवा खाते तक पहुँच सकता है, इसलिए हमेशा **जांचना महत्वपूर्ण है कि सदस्य कैसे परिभाषित है**।\
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> यह हमेशा कुछ ऐसा होना चाहिए:
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>
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> `attribute.{custom_attribute}`:`principalSet://iam.googleapis.com/projects/{project}/locations/{location}/workloadIdentityPools/{pool}/attribute.{custom_attribute}/{value}`
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### Github
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Remember to change **`${providerId}`** and **`${saId}`** for their respective values:
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याद रखें कि **`${providerId}`** और **`${saId}`** को उनके संबंधित मानों के लिए बदलें:
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```yaml
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name: Check GCP action
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on:
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workflow_dispatch:
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pull_request:
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branches:
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- main
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workflow_dispatch:
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pull_request:
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branches:
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- main
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permissions:
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id-token: write
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id-token: write
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jobs:
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Get_OIDC_ID_token:
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runs-on: ubuntu-latest
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steps:
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- id: "auth"
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name: "Authenticate to GCP"
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uses: "google-github-actions/auth@v2.1.3"
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with:
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create_credentials_file: "true"
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workload_identity_provider: "${providerId}" # In the providerId, the numerical project ID (12 digit number) should be used
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service_account: "${saId}" # instead of the alphanumeric project ID. ex:
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activate_credentials_file: true # projects/123123123123/locations/global/workloadIdentityPools/iam-lab-7-gh-pool/providers/iam-lab-7-gh-pool-oidc-provider'
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- id: "gcloud"
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name: "gcloud"
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run: |-
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gcloud config set project <project-id>
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gcloud config set account '${saId}'
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gcloud auth login --brief --cred-file="${{ steps.auth.outputs.credentials_file_path }}"
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gcloud auth list
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gcloud projects list
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gcloud secrets list
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Get_OIDC_ID_token:
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runs-on: ubuntu-latest
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steps:
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- id: "auth"
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name: "Authenticate to GCP"
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uses: "google-github-actions/auth@v2.1.3"
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with:
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create_credentials_file: "true"
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workload_identity_provider: "${providerId}" # In the providerId, the numerical project ID (12 digit number) should be used
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service_account: "${saId}" # instead of the alphanumeric project ID. ex:
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activate_credentials_file: true # projects/123123123123/locations/global/workloadIdentityPools/iam-lab-7-gh-pool/providers/iam-lab-7-gh-pool-oidc-provider'
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- id: "gcloud"
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name: "gcloud"
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run: |-
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gcloud config set project <project-id>
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gcloud config set account '${saId}'
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gcloud auth login --brief --cred-file="${{ steps.auth.outputs.credentials_file_path }}"
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gcloud auth list
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gcloud projects list
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gcloud secrets list
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```
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{{#include ../../../banners/hacktricks-training.md}}
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