Disabling Auto Traffic Promotion in Google Cloud App Engine
When deploying applications to Google Cloud App Engine, you might want to disable the automatic traffic promotion feature, which promotes the latest deployed version to receive 100% of the traffic by default. This can be useful when you want to manually control when a new version of your application should start receiving traffic. To disable auto traffic promotion, you can use the following command in your terminal:
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This command configures your Google Cloud CLI (gcloud) to not automatically promote the latest deployed version. Here’s what each part of the command does:
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gcloud config: This is the command to interact with the configuration settings of your Google Cloud SDK. -
set app/promote_by_default false: This specific configuration setting tells App Engine not to automatically promote new versions to receive traffic.
By setting app/promote_by_default to false, you ensure that newly deployed versions will not automatically receive traffic. Instead, you’ll need to manually control when and how much traffic is routed to each version of your application.
This can be particularly useful for scenarios where you want to perform extensive testing on a new version before making it the default version or gradually rolling out updates to a subset of your users.
Remember that with this setting in place, you will need to manually promote versions to start receiving traffic. You can do this using the Google Cloud Console or the gcloud command-line tool, specifying the percentage of traffic you want to direct to a specific version.
In summary, the gcloud config set app/promote_by_default false command is a handy way to disable automatic traffic promotion for your Google Cloud App Engine deployments, giving you more control over when and how you route traffic to different versions of your application.