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#!/usr/bin/env python
"""
This script checks, if for each maintainer (defined in the hostinfo data)
a public ssh key is available in the bcfg2 repository.
"""
import os
import sys
import yaml
import argparse
import logging
import nagiosplugin
class MissingMaintainerKeys(nagiosplugin.Resource):
def __init__(self, hostinfo, repo):
self.hostinfo = hostinfo
self.repo = repo
@property
def name(self):
return "missing_maintainer_keys"
def _get_all_hosts(self):
hosts = list()
hosts_path = os.path.join(self.hostinfo, 'metadata', 'hosts')
with open(hosts_path) as hosts_file:
hostlist = yaml.load(hosts_file)
hosts = hostlist['hosts']
return hosts
def _get_all_maintainers(self, hosts):
maintainers = set()
for host in hosts:
data = dict()
with open(os.path.join(self.hostinfo, host)) as host_file:
data = yaml.load(host_file)
if 'maintainers' in data and data['maintainers'] is not None:
for maintainer in data['maintainers']:
if type(maintainer) is dict:
maintainers |= set(maintainer.values())
else:
maintainers |= set([maintainer])
return maintainers
def probe(self):
hosts = self._get_all_hosts()
maintainers = self._get_all_maintainers(hosts)
yield nagiosplugin.Metric('count', maintainers, context='count')
errors = list()
for maintainer in maintainers:
keyfile = os.path.join(self.repo, 'SSHKeys', maintainer + '.pub')
if not os.path.exists(keyfile):
errors.append(maintainer)
yield nagiosplugin.Metric('missing', errors, context='missing')
class MissingMaintainerKeysContext(nagiosplugin.Context):
def __init__(self, name, result_cls=nagiosplugin.Result):
super(MissingMaintainerKeysContext, self).__init__(
name,
result_cls=result_cls)
def describe(self, metric):
if len(metric.value) > 0:
return ("missing keys: %s" % ', '.join(metric.value))
return "all keys available"
def evaluate(self, metric, resource):
if len(metric.value) > 0:
return self.result_cls(nagiosplugin.Critical,
hint=self.describe(metric), metric=metric)
return self.result_cls(nagiosplugin.Ok,
hint=self.describe(metric), metric=metric)
def performance(self, metric, resource):
return nagiosplugin.Performance(
label='missing',
value=len(metric.value),
crit="1",
min="0")
class MaintainersContext(nagiosplugin.Context):
def __init__(self, name, result_cls=nagiosplugin.Result):
super(MaintainersContext, self).__init__(
name,
result_cls=result_cls)
def describe(self, metric):
if len(metric.value) < 1:
return "no maintainer found"
if len(metric.value) == 1:
return "1 maintainer found"
return "%d maintainers found" % len(metric.value)
def evaluate(self, metric, resource):
if len(metric.value) < 1:
return self.result_cls(nagiosplugin.Critical,
hint=self.describe(metric), metric=metric)
return self.result_cls(nagiosplugin.Ok,
hint=self.describe(metric), metric=metric)
def performance(self, metric, resource):
return nagiosplugin.Performance(
label='count',
value=len(metric.value),
min="0")
def print_version():
import version
self = os.path.basename(sys.argv[0])
print("%s %s" % (self, version.get_git_version()))
sys.exit(nagiosplugin.Unknown.code)
@nagiosplugin.guarded
def main():
basepath = '/usr/local/share/hostinfo'
repopath = '/var/lib/bcfg2/'
if 'HOSTINFO_PATH' in os.environ and os.environ['HOSTINFO_PATH'] != '':
basepath = os.environ['HOSTINFO_PATH']
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument("-p", "--path", default=basepath,
help="set the path to the hostinfo data")
parser.add_argument("-r", "--repo", default=repopath,
help="set the path to the bcfg2 repo")
parser.add_argument("-V", "--version", action="store_true",
help="only print the version number and exit")
parser.add_argument("-v", "--verbose", action="count", default=0,
help="increase output verbosity (use up to 3 times)")
parser.add_argument("-t", "--timeout", type=int, default=10,
help="abort check execution with a UNKNOWN result "
"after so many seconds (use 0 for no timeout)")
args = parser.parse_args()
if args.version:
print_version()
if not os.path.exists(args.path):
raise Exception("hostinfo data not found in '%s'" % args.path)
if not os.path.exists(args.repo):
raise Exception("bcfg2 repo not found in '%s'" % args.repo)
check = nagiosplugin.Check(
MissingMaintainerKeys(args.path, args.repo),
MaintainersContext('count'),
MissingMaintainerKeysContext('missing'))
check.main(verbose=args.verbose, timeout=args.timeout)
if __name__ == '__main__':
main()
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