Check OpenLDAP cn=monitor information

This Nagios plugin gets different information from OpenLDAP cn=monitor backend like:

• Current connections
• Total connections
• LDAP operations
• BDB backend caches
• MDB used and free pages

With performance data, it allows to create graph to follow evolution of these indicators.

Required Perl modules:

• Net::LDAP
• Getopt::Std
• File::Basename

$ perl check_ldap_monitor.pl -T type -H hostname [-p port] [-D binddn -P bindpw] [-m mode]

• -H: LDAP server hostname or IP, or LDAP URI
• -w: Warning threshold
• -c: Critical threshold
• -T: Type of information to check:
  • currentconnections: current established connections
  • totalconnections: total established connections
  • dncache: total DN in cache
  • entrycache: total entries in cache
  • idlcache: total IDL in cache
  • totaloperations: total operations
  • totalabandon: total ABANDON operation
  • totaladd: total ADD operations
  • totalbind: total BIND operations
  • totalcompare: total COMPARE operations
  • totaldelete: total DELETE operations
  • totalextended: total EXTENDED operations
  • totalmodify: total MODIFY operations
  • totalmodrdn: total MODRDN operations
  • totalsearch: total SEARCH operations
  • totalunbind: total UNBIND operations
  • mdbpagesmax: maximum pages in MDB database
  • mdbpageused: used pages in MDB database
  • mdbpagesfree: free pages in MDB database

• -p: LDAP server port (not working if LDAP URI is set in -H)
• -D: Bind DN
• -P: Bind password
• -v: Verbose
• -V: Print version and exit
• -h: Print help and exit
• -f: Performance data
• -t: Timeout
• -F: Filter of the LDAP search
• -s: Scope of the LDAP search
• -b: Base of the LDAP search
• -m: Mode (default: lesser):
  • lesser: error is returned if found value is inferior to warning or critical level
  • greater: error is returned if found value is superior to warning or critical level

This plugin, along with all other Nagios plugins from this site, can be downloaded in a single archive.