9cf6337d5e
Add new type of fault called "stress". When activated this fault produces load on CPU, disk, memory or kernel of node. The functionality is implemented with help of stress-ng utility. Node collection API is extended: def stress(self, target, duration=None) Human API is extended, examples of commands: * stress cpu for 20 seconds on controller.domain.tld node * stress disk for 10 seconds on all nodes * stress memory for 60 seconds on all nodes with keystone service Change-Id: I8ddb2292b8dd19f476e4a5071259d1a90cbaa37c Note: 'stress-ng' is required to be installed on target nodes.
45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
#!/usr/bin/python
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from ansible.module_utils.basic import * # noqa
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STRESSORS_MAP = {
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'cpu': '--cpu 0',
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'disk': '--hdd 0',
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'memory': '--brk 0',
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'kernel': '--kill 0',
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'all': '--all 0',
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}
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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target=dict(required=True, type='str'),
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duration=dict(required=True, type='int')
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))
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target = module.params['target']
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stressor = STRESSORS_MAP.get(target) or STRESSORS_MAP['all']
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duration = module.params['duration']
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cmd = 'bash -c "stress-ng %s --timeout %ss"' % (stressor, duration)
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rc, stdout, stderr = module.run_command(cmd, check_rc=True)
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module.exit_json(cmd=cmd, rc=rc, stderr=stderr, stdout=stdout)
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if __name__ == '__main__':
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main()
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