mirror of
https://github.com/munin-monitoring/contrib.git
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92 lines
2.4 KiB
Python
Executable File
92 lines
2.4 KiB
Python
Executable File
#!/usr/bin/python
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#
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# Plugin to monitor fail2ban blacklists.
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# Parses iptables output. Must be run as a user that may do such. Probably root.
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#
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# Requires: python, probably 2.3 or so :)
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#
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# Written by Lasse Karstensen <lasse.karstensen@gmail.com> September 2007.
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# Parameters understood:
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# config (required)
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# autoconf (optional)
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#
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#%# family=auto
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#%# capabilities=autoconf
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libdir="/usr/share/fail2ban"
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iptablesbin="/sbin/iptables"
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import sys, os, ConfigParser
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def get_fail2ban_checks(configfile="/etc/fail2ban.conf"):
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confReader = ConfigParser.ConfigParser()
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confReader.read(configfile)
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res = []
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for section in confReader.sections():
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# basic configuration, not essential for us so we skip it.
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if section in ["MAIL"]:
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continue
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if confReader.has_option(section, "enabled"):
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val = confReader.get(section, "enabled")
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if val.lower() == "true":
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res.append(section)
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return res
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def list_iptables(chain):
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global iptablesbin
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cmd = "%s -n -L fail2ban-%s" % (iptablesbin, chain)
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num = 0
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for line in os.popen(cmd):
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line = line.strip()
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if line.split()[0] == "DROP":
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num = num + 1
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return num
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def print_config():
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# noisy
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print 'graph_title Fail2ban blacklist'
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print 'graph_info This graph shows the number of host blocked by fail2ban.'
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print 'graph_category network'
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print 'graph_vlabel Count'
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print 'graph_args --base 1000 -l 0'
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print 'graph_total total'
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for checkname in get_fail2ban_checks():
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checkname_sane = checkname_sanitize(checkname)
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print '%s.label Rules in chain %s' % (checkname_sane, checkname_sane)
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print '%s.min 0' % checkname_sane
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def checkname_sanitize(name):
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new = ""
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from string import digits, letters
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for char in name:
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if char not in letters+digits:
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new += "_"
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else:
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new += char
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return new
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def main():
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if len(sys.argv) > 1 and sys.argv[1] == "autoconf":
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if os.path.isdir(libdir):
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print "yes"
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sys.exit(0)
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else:
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print "no"
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sys.exit(1)
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sys.path.append(libdir)
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if len(sys.argv) > 1 and sys.argv[1] == "config":
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print_config()
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sys.exit(0)
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for checkname in get_fail2ban_checks():
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num = list_iptables(checkname)
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print "%s.value %s" % (checkname_sanitize(checkname), num)
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if __name__ == "__main__":
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main()
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