5 Nagios General Questions

[rjustinwilliams at gmail.com]

The mail commands are borked.

Change /usr/bin/mail "%b" to /usr/bin/printf "%b"

The command, as you currently have it, is mailing nonsense to a piped mail  
command.
Making the above change will actually pipe the body to the mail command  
instead...

On Oct 23, 2009 11:04am, "Goutos, Kevin" <kgoutos at libertymgt.com> wrote:
> Thanks for the reply!





> 1) Thank you for this information, however I'm still confused. I did a

> ps -A and confirmed that mutliple instances were running, so I followed

> your steps, did a kill- 9 PID and restarted nagios. I then removed a

> host in my hosts.cfg file, did a /etc/rc.d/init.d/nagios reload and the

> changes were Not made. I still saw that host in my Nagios web

> interface. I even tried a stop | reload, but with the same results.

> Finally, I stopped Nagios, and did the /usr/local/nagios/bin/nagios -d

> /usr/local/nagios/etc/nagios.cfg and saw that the configs were updated,

> and the hosts were removed. If you could clarify this I would

> appreciate it.



> 2) Below are my E-mail commands in commands.cfg. I'm pretty sure I

> haven't changed much, if anything, in them from the default values. Am

> I competely off based thinking there should be a body in these

> notifcation alerts?



> # 'notify-host-by-email' command definition

> define command{

> command_name notify-host-by-email

> command_line /usr/bin/mail "%b" "***** Nagios

> *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState:

> $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time:

> $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert:

> $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$

> }



> # 'notify-service-by-email' command definition

> define command{

> command_name notify-service-by-email

> command_line /usr/bin/mail "%b" "***** Nagios

> *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService:

> $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState:

> $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional

> Info:\n\n$SERVICEOUTPUT$" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service

> Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$

> }



> 3) Thanks! I'll check some of the popular ones out first.



> 4) We're not running MTRG, but that is something I'm going to look into.



> 5) Thanks, I'll take a look at Cricket.









> -----Original Message-----

> From: Marc Powell [mailto:marc at ena.com]

> Sent: Friday, October 23, 2009 9:34 AM

> To: Nagios-users at lists.sourceforge.net Mailinglist

> Subject: Re: [Nagios-users] 5 Nagios General Questions





> On Oct 22, 2009, at 2:29 PM, Goutos, Kevin wrote:



> > Hi all,

> >

> > I have a few general Nagios questions for you all, I appreciate any

> > feedback you can provide.

> >

> >

> > 1) I don't think I'm restarting Nagios correctly whenever I make a

> > change in a one of the configuration files. I'm using

> > /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg as

> > well

> > as /etc/rc.d/init.d/nagios reload, restart, stop, start ,etc.



> The first starts a new instance of nagios and the second reloads or

> reloads that new instance. If you do both, in that order, it does

> nothing for the *original* running version of nagios, which continues

> to run. You end up with two or more concurrently running versions of

> nagios, each with possibly different configurations in memory. Use

> only the init.d restart or reload. To 'fix' where you are now, stop

> nagios, use 'ps' and 'kill' to stop any running copies you have and

> restart nagios.



> > 2) For my notifications, I'm not seeing anything in the body of the

> > message. All I see is the Message name "** PROBLEM Host Alert: CORP-

> > NSS

> > is DOWN **". I'm pretty sure there should be more information in the

> > body.. any ideas?



> Without seeing the actual notification command definition in question,

> we can only say to look at it and make sure that the macros you are

> using for it are valid for your version of nagios.



> > 3) I've seen a couple plugins on a few sites I might want to check

> > out,

> > how do I go about installing them? I didn't find any documentation

> > for

> > installing them..



> Typically just copy them to the libexec directory and create

> appropriate command{} definitions for them. Hopefully the plugin

> author provides enough information or plugin --help to figure it out.

> Otherwise, your understanding how the current plugin command{}

> definition service{} definition relationship works is usually

> enough to know what to do. Read through the nagios documentation;

> it'll be worth it in the long term.



> > 4) I'm looking for more ways to monitor our Routers and Switches here.

> > Currently all I have is service checks of 'Ping Test' and 'System

> > Uptime'. I also saw on the quickstart guide the following service

> > check, but I'm seeing errors. The IP address there looks wrong, and

> > it's saying it can't find a log.

> >

> > define service{

> > use generic-service

> > hostgroup_name switches

> > service_description Check Local Traffic

> > check_command

> > check_local_mrtgtraf!/var/lib/mrtg/192.168.1.253_1.log!AVG!

> > 1000000,20000

> > 00!5000000,5000000!10

> > }



> This plugin requires that you're already running the MRTG program

> (completely unrelated to Nagios) to pre-cache the results. It's simply

> reading the traffic usage from the MTRG log file, not from the router.

> Are you running MRTG and pointing it to the correct and existing log

> file (/var/lib/mrtg/192.168.1.253_1.log)? Are the permissions such

> that the nagios user can read it?



> > 5) What other service checks do people use to monitor their switches

> > and

> > routers? We have SNMP enabled on them and want to collect more

> > information through Nagios.



> Ping, a bunch of custom checks (BGP peering, multi-interface checks,

> etc) for Nagios. We use Cricket for all utilization graphing/trending.



> --

> Marc





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> ------------------------------------------------------------------------------

> Come build with us! The BlackBerry(R) Developer Conference in SF, CA

> is the only developer event you need to attend this year. Jumpstart your

> developing skills, take BlackBerry mobile applications to market and stay

> ahead of the curve. Join us from November 9 - 12, 2009. Register now!

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> ::: Please include Nagios version, plugin version (-v) and OS when  
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