Package pubkeypin provides primitives for x509 public key pinning in the style of RFC7469.

BuildArgumentListFromMap takes two string-string maps, one with the base arguments and one with optional override arguments.

CheckErr prints a user friendly error to STDERR and exits with a non-zero exit code.

GetMasterEndpoint returns a properly formatted Master Endpoint or passes the error from GetMasterHostPort.

GetMasterHostPort returns a properly formatted Master IP/port pair or error if the IP address can not be parsed or port is outside the valid TCP range.

KubernetesIsCIVersion checks if user requested CI version.

KubernetesReleaseVersion is helper function that can fetch available version information from release servers based on label names, like "stable" or "latest".

KubernetesVersionToImageTag is helper function that replaces all non-allowed symbols in tag strings with underscores.

ParseArgumentListToMap parses a CLI argument list in the form "--foo=bar" to a string-string map.

ReplaceArgument gets a command list; converts it to a map for easier modification, runs the provided function that returns a new modified map, and then converts the map back to a command string slice.