Re: [Nagios-users] monitoring dhcp
On 2012-01-24 14:00, Perfors, Henny wrote: We've a Windows 2008 server with DHCP role. There is an option to display the statics of the scope. Total Addresses .. In Use .. % Available ..% Is it possible to gt these information available in Nagios. Please advise. Thanks! Henry It might be possible via SNMP, ensure you have the windows DHCP MIB loaded, and try walking 1.3.6.1.4.1.311.1.3 and see what is available to you. -- Message sent via my webmail account. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] monitoring dhcp
We've a Windows 2008 server with DHCP role. There is an option to display the statics of the scope. Total Addresses .. In Use .. % Available ..% Is it possible to gt these information available in Nagios. I haven't had much luck with this. Microsoft doesn't expose hardly any of this data via WMI or any other interface that I've found. I haven't looked at Powershell yet, mostly because many of my servers do not have it installed (2003 -vs- 2008). The best I've been able to do is watch the event log for DHCP server complaints about a scope getting close to consumed. Even *that* has been problematic, as the DHCP server service seems to arbitrarily decide when it wants to complain. I ended up writing a custom plugin that watches the event log for those events, parsing the output, and deciding on whether it's appropriate to alert. Benny -- Cats land on their feet. Toast lands peanut butter side down. A cat with toast strapped to its back will hover above the ground in a state of quantum indecision. -- Unknown -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] monitoring dhcp
On 2012-01-24 14:36, C. Bensend wrote:
We've a Windows 2008 server with DHCP role. There is an option to
display
the statics of the scope.
Total Addresses ..
In Use .. %
Available ..%
Is it possible to gt these information available in Nagios.
I haven't had much luck with this. Microsoft doesn't expose hardly
any of this data via WMI or any other interface that I've found.
I haven't looked at Powershell yet, mostly because many of my
servers do not have it installed (2003 -vs- 2008).
The best I've been able to do is watch the event log for DHCP
server complaints about a scope getting close to consumed. Even
*that* has been problematic, as the DHCP server service seems to
arbitrarily decide when it wants to complain. I ended up writing
a custom plugin that watches the event log for those events, parsing
the output, and deciding on whether it's appropriate to alert.
I don't think you'll have much trouble getting this via SNMP. It is
defined in the MIB on a per-scope basis, suggest you go a snmpwalk on
the OID I gave earlier and see what you get.
MIB excerpt:
scopeTable OBJECT-TYPE
SYNTAX SEQUENCE OF ScopeTableEntry
ACCESS read-only
STATUS mandatory
DESCRIPTION
A list of subnets maintained by the server
::= { dhcpScope 1 }
scopeTableEntry OBJECT-TYPE
SYNTAX ScopeTableEntry
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the row corresponding to a subnet
INDEX { subnetAdd }
::= { scopeTable 1 }
ScopeTableEntry ::= SEQUENCE {
subnetAdd
IpAddress,
noAddInUse
Counter,
noAddFree
Counter,
noPendingOffers
Counter
}
subnetAdd OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the subnet address
::= { scopeTableEntry 1 }
noAddInUse OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses in use
::= { scopeTableEntry 2 }
noAddFree OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses that are free
::= { scopeTableEntry 3 }
noPendingOffers OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses that are currently in the offer
state
::= { scopeTableEntry 4 }
END
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Re: [Nagios-users] monitoring dhcp
I don't think you'll have much trouble getting this via SNMP. It is
defined in the MIB on a per-scope basis, suggest you go a snmpwalk on
the OID I gave earlier and see what you get.
MIB excerpt:
scopeTable OBJECT-TYPE
SYNTAX SEQUENCE OF ScopeTableEntry
ACCESS read-only
STATUS mandatory
DESCRIPTION
A list of subnets maintained by the server
::= { dhcpScope 1 }
scopeTableEntry OBJECT-TYPE
SYNTAX ScopeTableEntry
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the row corresponding to a subnet
INDEX { subnetAdd }
::= { scopeTable 1 }
ScopeTableEntry ::= SEQUENCE {
subnetAdd
IpAddress,
noAddInUse
Counter,
noAddFree
Counter,
noPendingOffers
Counter
}
subnetAdd OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the subnet address
::= { scopeTableEntry 1 }
noAddInUse OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses in use
::= { scopeTableEntry 2 }
noAddFree OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses that are free
::= { scopeTableEntry 3 }
noPendingOffers OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
This is the no. of addresses that are currently in the offer
state
::= { scopeTableEntry 4 }
END
Thank you, Giles! This doesn't help me (I don't have SNMP enabled
on my hosts and don't plan on doing so), but it's good to know
for the future...
That's certainly better than what is exposed elsewhere...
Benny
--
Cats land on their feet. Toast lands peanut butter side down. A cat
with toast strapped to its back will hover above the ground in a state
of quantum indecision. -- Unknown
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Re: [Nagios-users] monitoring dhcp
I use check_mk, which included a plugin for monitoring Windows DHCP server: netsh dhcp server show mibinfo | find /V : dhcp. | find /V DHCP-Serverversion wurde | find /V nicht richtig funktionieren. | find /V : dhcp server show mibinfo. So, either you could either write a plugin for NSClient++ or get handy with winexe in Linux. Though – a quick glance at the MIB shows the same data.. In the end, that may save you some scripting grief. From: Giles Coochey [mailto:gi...@coochey.net] Sent: Tuesday, January 24, 2012 7:31 AM To: nagios-users@lists.sourceforge.net Subject: Re: [Nagios-users] monitoring dhcp On 2012-01-24 14:00, Perfors, Henny wrote: We’ve a Windows 2008 server with DHCP role. There is an option to display the statics of the scope. Total Addresses .. In Use .. % Available ..% Is it possible to gt these information available in Nagios. Please advise. Thanks! Henry It might be possible via SNMP, ensure you have the windows DHCP MIB loaded, and try walking 1.3.6.1.4.1.311.1.3 and see what is available to you. -- Message sent via my webmail account. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
