check_dnsserials

                                        
Check your DNS is in sync (general icinga/icinga2/nagios plugin)

                    

        
        

            
            

                

    

    
check_dnsserials


Check your DNS is in sync by comparing the serials. This is a general icinga/icinga2/nagios/anyOtherNagiosFork plugin.


It is written in Shell (Bash).


Installation and requirements


    

  • bash (it may be compliant to zsh, too. but not sh!)
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  • monitoring-plugins
On debian-based systems you need the package nagios-plugins or the package monitoring-plugins
    • 



Usage


check_dnsserials -d DOMAIN [-H DNS-MASTER] [-S DNS-SLAVES] [ -s SOA-SERIAL] [-w FAILS] [-c FAILS] [ -h -v ]

DNS-MASTER: The master to get all main informations from
DNS-SLAVES: The slaves to compare with the master's serial
SOA-SERIAL: The serial number used to compare all DNS slaves (not recommended to set)
FAILS: The amount of DNS servers allowed having another serial (=> amount of dns servers not in sync) (defaults to 0)

If any of DNS-MASTER, DNS-SLAVES or SOA-SERIAL is unset, it'll get queried from the DNS system.


FAILS determines the amount of slaves, which are allowed out of sync.


Usecase: If you have 5 servers, and 2 are giving a wrong serial, the plugin will state warning if you specifiy -w 1. (vice-versa with -c)