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Docker and Kubernetes for Java Developers by Jaroslaw Krochmalski

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Authentication

By default, the Kubernetes API server serves HTTP requests on two ports:

  • Localhost, unsecured port: By default, the IP address is localhost and a port number is 8080. There is no TLS communication, all requests on this port bypasses authentication and authorization plugins. This is intended for testing and bootstrap, and for other components of the master node. This is also used to other Kubernetes components such as scheduler or controller-manager to execute API calls. You can change the port number with the --insecure-port switch, and the default IP by using the --insecure-bind-address command-line switch.
  • Secure port: The default port number is 6443 (it can be changed with the `--secure-port switch), usually it's 443 on ...

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