startup.py 文件源码

def kubectl_or_oc(server: str) -> str:
    """
    Return "kubectl" or "oc", the command-line tool we should use.

    :param server: The URL of the cluster API server.
    """
    if which("oc") is None:
        return "kubectl"
    # We've got oc, and possibly kubectl as well. We only want oc for OpenShift
    # servers, so check for an OpenShift API endpoint:
    ctx = ssl.create_default_context()
    ctx.check_hostname = False
    ctx.verify_mode = ssl.CERT_NONE
    try:
        with urlopen(server + "/version/openshift", context=ctx) as u:
            u.read()
    except HTTPError:
        return "kubectl"
    else:
        return "oc"