144 lines
4.3 KiB
Python
144 lines
4.3 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
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#
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# Author: Frederic Lepied <frederic.lepied@enovance.com>
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#
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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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''' Nagios check using ceph health.
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'''
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import json
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import subprocess
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import sys
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import traceback
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def per(percent, value):
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return percent / 100 * value
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def remaining(avail, total):
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return "(%dMB/%dMB)" % (avail / 1024, total / 1024)
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def interpret_output_df(output):
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'''Parse the output of ceph health.
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Return an exit code and message compatible with nagios.
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'''
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try:
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data = json.loads(output)
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except Exception:
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return (1, 'CEPH WARNING: unable to parse ceph df %s' %
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traceback.format_exc())
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warn_percent = int(sys.argv[1]) if len(sys.argv) >= 2 else 85
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crit_percent = int(sys.argv[2]) if len(sys.argv) >= 3 else 98
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if 'total_bytes' in data['stats']:
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total = int(data['stats']['total_bytes'])
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else:
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total = int(data['stats']['total_space'])
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if 'total_used_bytes' in data['stats']:
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used = int(data['stats']['total_used_bytes'])
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else:
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used = int(data['stats']['total_used'])
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if 'total_avail_bytes' in data['stats']:
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avail = int(data['stats']['total_avail_bytes'])
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else:
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avail = int(data['stats']['total_avail'])
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# Test correctness of values
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if used + avail != total:
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return (1, '[WARN] Used + Avail. != Total space')
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elif avail < per(crit_percent, total):
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return (2, "[ERR] Ceph df avail. critical %s" %
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remaining(avail, total))
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elif avail < per(warn_percent, total):
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return (1, "[WARN] Ceph df avail. waring %s" %
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remaining(avail, total))
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else:
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return (0, "[OK] Ceph df avail. seems good %s" %
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remaining(avail, total))
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def check_ceph_df():
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'Program entry point.'
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try:
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ceph_args = ["ceph", "df", "--format=json"]
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if len(sys.argv) >= 4:
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ceph_args.append('-n')
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ceph_args.append(sys.argv[3])
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res = subprocess.check_output(ceph_args,
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stderr=subprocess.STDOUT)
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exit_code, message = interpret_output_df(res)
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sys.stdout.write("%s\n" % message)
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sys.exit(exit_code)
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except subprocess.CalledProcessError as e:
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sys.stdout.write('CEPH UNKNOWN: %s\n' % e.output)
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sys.exit(3)
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except OSError:
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sys.stdout.write('CEPH UNKNOWN: unable to launch ceph health\n')
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sys.exit(3)
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def interpret_output_health(output):
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'''Parse the output of ceph health.
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Return an exit code and message compatible with nagios.
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'''
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tokens = output.split(' ')
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if len(tokens) == 1:
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tokens[0] = tokens[0].strip()
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tokens.append('\n')
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if tokens[0] == 'HEALTH_OK':
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return (0, 'CEPH OK: ' + ' '.join(tokens[1:]))
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elif tokens[0] == 'HEALTH_WARN':
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return (1, 'CEPH WARNING: ' + ' '.join(tokens[1:]))
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elif tokens[0] == 'HEALTH_ERR':
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return (2, 'CEPH CRITICAL: ' + ' '.join(tokens[1:]))
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else:
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return (3, 'CEPH UNKNOWN: ' + ' '.join(tokens))
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def check_ceph_health():
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'Program entry point.'
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try:
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ceph_args = ["ceph", "health"]
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if len(sys.argv) >= 2:
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ceph_args.append('-n')
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ceph_args.append(sys.argv[1])
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res = subprocess.check_output(ceph_args,
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stderr=subprocess.STDOUT)
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exit_code, message = interpret_output_health(res)
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sys.stdout.write(message)
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sys.exit(exit_code)
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except subprocess.CalledProcessError as e:
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sys.stdout.write('CEPH UNKNOWN: %s\n' % e.output)
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sys.exit(3)
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except OSError:
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sys.stdout.write('CEPH UNKNOWN: unable to launch ceph health\n')
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sys.exit(3)
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