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  1. Create a dedicated Service Account for PeerDB through Google Cloud Console and specify the following roles:
  • Pub/Sub Viewer : PeerDB requires this role to check if your provided topic exists.
  • Pub/Sub Publisher : PeerDB requires this role to publish messages to the topic.
  1. Add a key to the above created service account
  2. Using this service account key create the peer using PeerDB UI

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Topic creation

By default, you would need to create the destination topic in PubSub before creating a mirror. However, if you’d like PeerDB to create the topic for you, you can turn on the following setting in PeerDB UI:
Note that you must create a subscription on the topic for messages to be retained.