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Chapter 7. Supported standards and protocols

Skupper supports the following protocols for your service network:

  • TCP - default
  • HTTP1
  • HTTP2

When exposing or creating a service, you can specify the protocol, for example: 

$ skupper expose deployment hello-world-backend --port 8080 --protocol <protocol>
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where <protocol> can be:

  • tcp
  • http
  • http2

When choosing which protocol to specify, note the following:

  • tcp supports any protocol overlayed on TCP, for example, HTTP1 and HTTP2 work when you specify tcp.
  • If you specify http or http2, the IP address reported by a client may not be accessible.

  • All service network traffic is converted to AMQP messages in order to traverse the service network.

    TCP is implemented as a single streamed message, whereas HTTP1 and HTTP2 are implemented as request/response message routing.

7.1. CLI options
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For a full list of options, see the Skupper Kubernetes CLI reference and Skupper Podman CLI reference documentation.

Warning

When you create a site and set logging level to trace, you can inadvertently log sensitive information from HTTP headers. 

$ skupper init --router-logging trace
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By default, all skupper commands apply to the cluster you are logged into and the current namespace. The following skupper options allow you to override that behavior and apply to all commands:

--namespace <namespace-name>

Apply command to <namespace-name>. For example, if you are currently working on frontend namespace and want to initialize a site in the backend namespace: 

$ skupper init --namespace backend
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--kubeconfig <kubeconfig-path>
Path to the kubeconfig file - This allows you run multiple sessions to a cluster from the same client. An alternative is to set the KUBECONFIG environment variable.
--context <context-name>
The kubeconfig file can contain defined contexts, and this option allows you to use those contexts.
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