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Whoops! Error - Can't Monitor
Posted: Wed Oct 20, 2010 10:53 pm
by bascotie
Hey guys,
I've tried a bunch of things I found online to no avail. Nagios is running (I also have Nagios3 which does not work either).
I get this in my log:
Whenever I try to go to any section it says:
Code: Select all
Whoops!
Error: Could not read host and service status information!
I'm in a virtual machine, I tried turning off all my firewalls and that didn't work. Any advice?
Running Ubuntu 10.04
Re: Whoops! Error - Can't Monitor
Posted: Thu Oct 21, 2010 6:43 pm
by mguthrie
I've run into this challenge with running Nagios in Ubuntu. You either have to go completely with Ubuntu's apt packages for Nagios3 (which make all of the official documentation useless, because for some reason they changed the locations for everything), or just remove everything, and go to Nagios.org, and install from source. The official Nagios documentation will actually work if you do it that way.
Here's a script I wrote up the other day to do most of the install steps for you. You're welcome to use it if you want:
Code: Select all
##Nagios Core install script for Ubuntu distro
#
##
cd /tmp
echo "Downloading packages..."
wget http://prdownloads.sourceforge.net/sourceforge/nagios/#nagios-3.2.3.tar.gz
wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-#plugins-1.4.15.tar.gz
echo "Installing Nagios Core..."
useradd nagios -p nagios
tar zxf nagios-3.2.3.tar.gz
cd /tmp/nagios-3.2.3
./configure
make all
make install
make install-init
make install-commandmode
make install-config
make install-webconf
echo "########Enter password for nagiosadmin user:############"
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
echo "Installing Nagios Plugins\n"
cd /tmp
tar zxf nagios-plugins-1.4.15.tar.gz
cd nagios-plugins-1.4.15
./configure
make
make all
make install
Re: Whoops! Error - Can't Monitor
Posted: Thu Oct 21, 2010 10:05 pm
by bascotie
Thanks for the help.
Your name reminds me of the old Chair at our CIS department
Anyway.. even when I had nagios3 installed, going to
http://localhost/nagios3 would return the same error when I try to monitor the services.
I tried following the documentation on the nagios website twice, once exactly, and once using the latest packages -- no luck =(
Re: Whoops! Error - Can't Monitor
Posted: Fri Oct 22, 2010 11:51 am
by mguthrie
Bear with me if you've already tried these, but did you restart apache after installation?
Are you able to get
http://localhost to return the default apache webpage?
It's saying it can't read the host and service status information. The critical files for the nagios monitoring engine are:
(on a source install)
/usr/local/nagios/var/status.dat #this has all the status data
/usr/local/nagios/var/objects.cache # this is a compilation of all of your configuration data
These file locations differ if you install with apt, or yum. But they need to be in the /nagios/var/ directory, and they need to have the correct permissions in order to work. Here's an example of what my file permissions look like for that directory.
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drwxrwxr-x 2 nagios nagios 4096 Oct 22 00:00 archives
-rw-rw-r-- 1 nagios users 200 Oct 22 11:51 host-perfdata
-rw-r--r-- 1 nagios nagios 6 Oct 22 10:42 nagios.lock
-rw-r--r-- 1 nagios nagios 80648 Oct 22 11:47 nagios.log
-rw-r--r-- 1 nagios nagios 5 Sep 22 09:17 ndo2db.lock
-rw-rw-r-- 1 nagios nagios 0 Oct 22 10:16 ndomod.tmp
srwxr-xr-x 1 nagios nagios 0 Sep 22 09:17 ndo.sock
-rw-r--r-- 1 nagios nagios 102156 Oct 22 10:42 objects.cache
-rw------- 1 nagios users 125420 Oct 22 11:42 retention.dat
drwxrwsr-x 2 nagios nagcmd 4096 Oct 22 10:42 rw
-rw-rw-r-- 1 nagios users 765 Oct 22 11:51 service-perfdata
drwxrwxr-x 4 nagios nagios 4096 Jan 11 2010 spool
-rw-rw-r-- 1 nagios users 123306 Oct 22 11:51 status.dat
Re: Whoops! Error - Can't Monitor
Posted: Fri Oct 22, 2010 6:53 pm
by bascotie
Thanks mguthrie
What I'm doing now is preparing my laptop with several partitions. I moved everything from my spare drive back to the windows partition then erased that partition, split it up, moved everything back, and installed Debian on the extra partition (oh, and I also decrypted my drive which took 10 hours lol).
So in a moment here I'll try it out from Debian which is on it's own dedicated partition (rather than VMWare). You had good tips above but I already removed a lot of Nagios from the Ubuntu VM. I'll keep you posted, thx!
Re: Whoops! Error - Can't Monitor
Posted: Sat Oct 23, 2010 6:13 pm
by bascotie
I installed Mint on a separate partition and it worked like a charm for some reason
Maybe the virtual machine had something to do with it.. I dunno.
Thanks for your help, though. I'll try that out sometime, GOD willing.
Re: Whoops! Error - Can't Monitor
Posted: Tue Oct 26, 2010 11:58 am
by tonyyarusso
mguthrie wrote:(which make all of the official documentation useless, because for some reason they changed the locations for everything)
That reason is called the Filesystem Hierarchy Standard, which all POSIX systems and software are
supposed to comply with. The Debian packaging teams fix things when packaging. When installing from a system package, /usr/local most not be used. When installing manually from source, either /usr/local or /opt must be used. Regardless, /usr/local/var is never a legal directory, which Nagios currently does incorrectly. See
Filesystem Hierarchy Standard, v2.3 for all the nitty-gritty details.