晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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# Copyright Red Hat 2020, Jake Hunsaker <jhunsake@redhat.com>

# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.

from shlex import quote
from sos.collector.clusters import Cluster


class kubernetes(Cluster):
    """
    The kuberentes cluster profile is intended to be used on kubernetes
    clusters built from the upstream/source kubernetes (k8s) project. It is
    not intended for use with other projects or platforms that are built ontop
    of kubernetes.
    """
    cluster_name = 'Community Kubernetes'
    packages = ('kubernetes-master',)
    sos_plugins = ['kubernetes']
    sos_plugin_options = {'kubernetes.all': 'on'}

    cmd = 'kubectl'

    option_list = [
        ('label', '', 'Filter node list to those with matching label'),
        ('role', '', 'Filter node list to those with matching role')
    ]

    def get_nodes(self):
        self.cmd += ' get nodes'
        if self.get_option('label'):
            self.cmd += f' -l {quote(self.get_option("label"))} '
        res = self.exec_primary_cmd(self.cmd)
        if res['status'] == 0:
            nodes = []
            roles = [x for x in self.get_option('role').split(',') if x]
            for nodeln in res['output'].splitlines()[1:]:
                node = nodeln.split()
                if not roles:
                    nodes.append(node[0])
                else:
                    if node[2] in roles:
                        nodes.append(node[0])
            return nodes
        raise Exception('Node enumeration did not return usable output')

# vim: set et ts=4 sw=4 :

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