In Kubernetes, pod names are generated using a combination of a user-specified name and a randomly generated string. The randomly generated string is created using the rand.String function in the Go programming language. To prevent the generation of pod names containing bad words or other inappropriate language, the rand.String function has been modified to remove certain characters.
Specifically, the vowels (a, e, i, o, u) and the numbers 0, 1, and 3 have been removed from the characters that can be generated by the rand.String function. This helps to ensure that the resulting pod names do not contain any bad words or offensive language.
In addition to avoiding bad words and offensive language, Kubernetes enforces certain rules and restrictions on pod names to ensure that they can be used as valid DNS labels. Pod names must consist of lowercase letters, numbers, and hyphens, and must start and end with a lowercase letter or number. Pod names must not exceed 253 characters in length, and must not start with certain reserved prefixes such as kube- or k8s-. Pod names must also not contain underscores or any other special characters.
By following these rules and restrictions, Kubernetes ensures that pod names are professional, appropriate, and easy to use. This helps to create a welcoming and inclusive environment for all users and contributors to the Kubernetes community.
Additionally, organizations may have their own naming conventions or policies in place to ensure that pod names are appropriate and professional, such as requiring pod names to include specific information about the application, environment, or version number.
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