Nagios and NSCA (for Munin)

[gshergill]

Hi Nagios Community,

I've managed to get Munin working and configured to check temperature's, fan speeds and voltage, which is perfect.

According to the Munin Exchange, it integrates perfectly with Nagios.

This is the guide I am using at the moment;

http://munin-monitoring.org/wiki/HowToContactNagios

What I have done so far;

On NagiosXI server:

-> nsca already installed. xinetd already installed.
-> Configure /etc/xinetd.d/nsca as requested.
-> Edit nsca.cfg to ensure correct command_file reference.
-> Edit send_nsca to add password.

On Munin server:
-> install nsca client. install nsca. install xinetd
-> Create and edit file /etc/xinetd.d/nsca as requested.
-> Edit send_nsca to add password.
-> Edit nsca.cfg to ensure correct command_file reference.

So now, when i run the command as follows here are the results;

From Nagios server,

Code: Select all

/usr/local/nagios/libexec/send_nsca -H localhost -c /usr/local/nagios/etc/send_nsca.cfg
Error: Timeout after 10 seconds

From Munin server,

Code: Select all

/usr/sbin/send_nsca -H localhost -c /etc/send_nsca.cfg
Connection refused by host
Error: Could not connect to host localhost on port 5667

Not really sure what I need to do now, they both failed and no idea why.

Any help would be great please.

Thank you,

gshergill

[gshergill]

Hi Nagios Community,

Is NSCA needed for this plugin to work?

http://exchange.nagios.org/directory/Pl ... rd/details

Thanks.

Kind Regards,

gshergill

[scottwilkerson]

While I am not real familiar with munin, I did notice that in your test you tried this

From Munin server,

Code: Select all

/usr/sbin/send_nsca -H localhost -c /etc/send_nsca.cfg
Connection refused by host
Error: Could not connect to host localhost on port 5667

Which I would guess should be

Code: Select all

/usr/sbin/send_nsca -H <NAGIOSXI_IP> -c /etc/send_nsca.cfg

[gshergill]

Hi scottwilkerson,

Unfortunately that comes with the same error from the Munin server;

Code: Select all

/usr/sbin/send_nsca -H 192.168.3.121 -c /etc/send_nsca.cfg
Connection refused or timed out
Error: Could not connect to host 192.168.3.121 on port 5667

Hopefully someone here can help with the Munin, am fast approaching a deadline for this.

Thank you.

Kind Regards,

gshergill

[gshergill]

Hi Nagios Community,

Small update;

With no password added to "send_nsca.cfg" it comes up with error in config file.

Adding password fixes it.

Then, with no password in "nsca.cfg" the following error appears;

Code: Select all

# send_nsca -H localhost -c /usr/local/nagios/etc/send_nsca.cfg
Error: Server closed connection before init packet was received
Error: Could not read init packet from server

Adding a password fixes it, but creates the timeout error shown previously.

Both passwords match.

Thank you.

Kind Regards,

gshergill

[gshergill]

Hi again,

Another quick update.

On the Nagios machine, edited the file "/etc/xinetd.d/nsca" file, allowing from the munin server.

Running the command here is the output;

Code: Select all

# /usr/local/nagios/libexec/send_nsca -H 192.168.3.82 -c /usr/local/nagios/etc/send_nsca.cfg
Connection refused by host
Error: Could not connect to host 192.168.3.82 on port 5667

Hope that helps.

Kind Regards,

gshergill

[slansing]

Hello gshergill,

Have you made absolutley sure that there is nothing obstructing that port on the Munin server from sending or receiving the NSCA information?

[scottwilkerson]

To be clear you are running the send_nsca command from the munin server correct?

On the XI machine can you also run the following and post the output

Code: Select all

iptables -L

[gshergill]

Hi scottwilkerson,

The following is the output from iptables;

Code: Select all

[root@nagiosxi etc]# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     icmp --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:ssh 
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:http 
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:https 
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited 

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited 

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination       

Hi slansing,

I'm not entire sure if there is anything obstructing it, how would I go about checking that?

I haven't added anything else to use that port.

Thank you.

Kind Regards,

gshergill

[scottwilkerson]

can you run this on the XI machine

Code: Select all

netstat -l -n|grep 5667

And this on the munin machine

Code: Select all

telnet <XI_IPADDRESS> 5667

and post the results