72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# Copyright 2017, Michael Rice <michael@michaelrice.org>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import platform
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import click
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from monitorstack import utils
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from monitorstack.cli import pass_context
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from monitorstack.utils.cli import run_command
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DOC = """Check a given volume group"""
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COMMAND_NAME = 'vg_check'
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@click.command(COMMAND_NAME, short_help=DOC)
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@click.option('--volume_group', nargs=1, type=str, required=True)
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@pass_context
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def cli(ctx, volume_group):
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"""
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Given volume group name get the total size and free space
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:param ctx: Click context
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:param volume_group: Name of volume group
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:type volume_group: str
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:return:
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"""
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exit_code, total_size, free = check_volgrp(volume_group)
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output = {
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'exit_code': exit_code,
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'measurement_name': COMMAND_NAME,
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'meta': {
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'platform': platform.platform(),
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}
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}
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if exit_code == 0:
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output['message'] = '{} check for volume group {} is ok'.format(
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COMMAND_NAME, volume_group)
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output['variables'] = {
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'vg_{}_total_size_M'.format(volume_group): total_size,
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'vg_{}_free_M'.format(volume_group): free,
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'vg_{}_used_M'.format(volume_group): total_size - free
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}
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if exit_code != 0:
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# if exit_code is not 0 then 'free' actually has our error output.
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# and with py3 it is bytes so we convert to str first.
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output['message'] = '{} for {} failed -- {}'.format(
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COMMAND_NAME, volume_group, utils.log_exception(str(free))
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)
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return output
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def check_volgrp(name):
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command = ('vgs {} --noheadings --units M '
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'--nosuffix -o vg_size,vg_free'.format(name))
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retcode, output, err = run_command(command)
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if retcode != 0:
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return retcode, output, err
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totalsize, free = [int(float(x)) for x in output.split()]
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return retcode, totalsize, free
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