[Nagios-users] Unmanaged switch
Folks, What is the best way to include an unmanaged (read: IPless) switch in Nagios? Obviously I can't monitor it directly, but I'd like Nagios to be aware of it in the network heirachy so that it is aware that it is a possible poit of failure. Can I just define it as a host with no IP address and make it a parent/client of the devices that attach to it or is there a better way to approach this? Mike. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ 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] Unmanaged switch
you'll need an ip to define it, since nagios require an address if you define it as host . but you van give it a fictitious ip and assign the Check_dummy to it so it will have a service assigned to it. then you can put it in the hierarchy . Unfortunately , this will not give a good indication to the topology if it indeed fails since there will be no true indication if it is up or down. On Monday 20 October 2008 09:48:29 Mike wrote: Folks, What is the best way to include an unmanaged (read: IPless) switch in Nagios? Obviously I can't monitor it directly, but I'd like Nagios to be aware of it in the network heirachy so that it is aware that it is a possible poit of failure. Can I just define it as a host with no IP address and make it a parent/client of the devices that attach to it or is there a better way to approach this? Mike. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ 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 -- Assaf Flatto SSP Ops Team Linux System Administrator IMPORTANT . this email and the information in it may be confidential, legally privileged and/or protected by law. It is intended solely for the use of the person to whom it is addressed. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Please also delete all copies of this email and any attachments from your system. We cannot guarantee the security or confidentiality of email communications. We do not accept any liability for losses or damages that you may suffer as a result of your receipt of this email including but not limited to computer service or system failure, access delays or interruption, data non-delivery or mis-delivery, computer viruses or other harmful components. Copyright in this email and any attachments belong to Select Service Partner UK Limited. Should you communicate with anyone at Select Service Partner UK Limited by email, you consent to us monitoring and reading any such correspondence. Nothing in this email shall be taken or read as suggesting, proposing or relating to any agreement concerted practice or other practice that could infringe UK or EC competition legislation. Select Service Partner UK Limited is a company registered in England and Wales (company number 05687183) whose registered office is at 1 The Heights, Brooklands, Weybridge. Surrey. KT13 0NY - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ 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] Unmanaged switch
On Monday October 20 2008 11:38:04 am Paul Weaver wrote:
How about a new command called fakecheck, and apply to a dumbswitch
host with a 127.0.0.1 address. It would take a list of machines, and
check them all. If any of them are up, then the fakecheck would return
OK, otherwise it would return an error state.
Just for understanding, you would check if the hosts which are connected to
this dumbswitch are up?
But they are tested anyhow..
greetings,
Christian
Something like
#!/usr/bin/perl
my $up = 0;
my @hosts = qw/10.1.2.3 10.1.2.4 10.1.2.5 10.1.2.6/;
foreach $addr (@hosts) {
if (pingCheck($addr)) { $up++; }
}
if ($up 0) {
print OK: Switch must be up\n;
exit 0;
} else {
print CRITICAL: Switch may be down\n;
exit 2;
}
(If you're good at programming you could probably get a list of children
out of the config -- complex configs take a long time to read in using
perl though)
Another way of monitoring would be to have it powered off an SNMP
enabled MDU which can tell the current being drawn. You could then
measure that.
--
Paul Weaver
Systems Development Engineer
News Production Facilities, BBC News
Work: 020 822 58109
Room 1244 Television Centre,
Wood Lane, London, W12 7RJ
-Original Message-
From: Mike [mailto:[EMAIL PROTECTED]
Sent: 20 October 2008 09:48
To: nagios-users@lists.sourceforge.net
Subject: [Nagios-users] Unmanaged switch
Folks,
What is the best way to include an unmanaged (read: IPless)
switch in Nagios? Obviously I can't monitor it directly, but
I'd like Nagios to be aware of it in the network heirachy so
that it is aware that it is a possible poit of failure. Can
I just define it as a host with no IP address and make it a
parent/client of the devices that attach to it or is there a
better way to approach this?
Mike.
--
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Re: [Nagios-users] Unmanaged switch
On Monday October 20 2008 11:38:04 am Paul Weaver wrote: How about a new command called fakecheck, and apply to a dumbswitch host with a 127.0.0.1 address. It would take a list of machines, and check them all. If any of them are up, then the fakecheck would return OK, otherwise it would return an error state. Just for understanding, you would check if the hosts which are connected to this dumbswitch are up? But they are tested anyhow.. If you have 10 devices on the unmanaged switch, and all 10 are off, it's likely the switch is broken -- so set the switch to off, and the devices to unreachable If 9 are off, and one is on, the switch *can't* be broken You could check the current state of each device (check_cluster), but 1) All devices go off, check_cluster goes bad 2) All devices then go unreachable 3) Check_cluster stays bad for ever (won't go good until a device goes good, which won't happen if they are unreachable and aren't checked), or it goes unreachable (inheriting the state of the devices), or goes good (if it treats unreachable as OK). None of those is the correct action. Pings are cheap. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ 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] Unmanaged switch
How about a new command called fakecheck, and apply to a dumbswitch
host with a 127.0.0.1 address. It would take a list of machines, and
check them all. If any of them are up, then the fakecheck would return
OK, otherwise it would return an error state.
Something like
#!/usr/bin/perl
my $up = 0;
my @hosts = qw/10.1.2.3 10.1.2.4 10.1.2.5 10.1.2.6/;
foreach $addr (@hosts) {
if (pingCheck($addr)) { $up++; }
}
if ($up 0) {
print OK: Switch must be up\n;
exit 0;
} else {
print CRITICAL: Switch may be down\n;
exit 2;
}
(If you're good at programming you could probably get a list of children
out of the config -- complex configs take a long time to read in using
perl though)
Another way of monitoring would be to have it powered off an SNMP
enabled MDU which can tell the current being drawn. You could then
measure that.
--
Paul Weaver
Systems Development Engineer
News Production Facilities, BBC News
Work: 020 822 58109
Room 1244 Television Centre,
Wood Lane, London, W12 7RJ
-Original Message-
From: Mike [mailto:[EMAIL PROTECTED]
Sent: 20 October 2008 09:48
To: nagios-users@lists.sourceforge.net
Subject: [Nagios-users] Unmanaged switch
Folks,
What is the best way to include an unmanaged (read: IPless)
switch in Nagios? Obviously I can't monitor it directly, but
I'd like Nagios to be aware of it in the network heirachy so
that it is aware that it is a possible poit of failure. Can
I just define it as a host with no IP address and make it a
parent/client of the devices that attach to it or is there a
better way to approach this?
Mike.
--
---
This SF.Net email is sponsored by the Moblin Your Move
Developer's challenge Build the coolest Linux based
applications with Moblin SDK win great prizes Grand prize
is a trip for two to an Open Source event anywhere in the
world http://moblin-contest.org/redirect.php?banner_id=100url=/
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when reporting any issue.
::: Messages without supporting info will risk being sent to /dev/null
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Build the coolest Linux based applications with Moblin SDK win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
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