CHECK_NRPE: Invalid packet version received from server.

[scharft]

hi,

all of our nrpe check's respond with status information: Invalid packet version received from server.
The status itself looks good.
On the XI server is Version: 4.0.3 installed.
All our clients using nsclient 0.5.2 or 0.4.4.19.

i have tried to execute check_nrpe with "-2" it doesn't work for us.

any ideas?

best Regards

[cdienger]

Edit the check_nrpe command(or which ever command your config is using) and try this format:

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$USER1$/check_nrpe -H $HOSTADDRESS$ -2 -t 30 -c $ARG1$ $ARG2$

I've noticed that the check_nrpe plugin expects the -2 or -3 option prior to the -c command and can throw an error otherwise.

Please provide the full command that you are running along with its output if the above doesn't help you to resolve the issue.

[scharft]

Hi,

if i use the command you provided without any addtional arguments i got:
[nagios@atvienag001 ~]$ /usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -2 -t 90 -c
NRPE Plugin for Nagios
Version: 4.0.3
Copyright (c) 2009-2017 Nagios Enterprises
1999-2008 Ethan Galstad (nagios@nagios.org)
Last Modified: 2020-04-28
License: GPL v2 with exemptions (-l for more info)
SSL/TLS Available: OpenSSL 0.9.6 or higher required

If i use it with the arguments we need for:
[nagios@atvienag001 ~]$ /usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -t 90 -c check_powerstate -a $HOSTADDRESS$
CHECK_NRPE: Invalid packet version received from server.

[cdienger]

What is the result of:

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/usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -2 -t 90 -c check_powerstate -a $HOSTADDRESS$

Also, are you replacing $HOSTADDRESS$ with a valid host address ?

[scharft]

it is independence which variable or command i useb, the error message ist the same but to answer your question, the variable will be replaced by the fqdn.

[nagios@atvienag001 ~]$ /usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -t 90 -c check_powerstate
CHECK_NRPE: Invalid packet version received from server.


[nagios@atvienag001 ~]$ /usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -t 90 -c $_HOSTCTX_DDC$
CHECK_NRPE: Invalid packet version received from server.

[cdienger]

Run this on the command line:

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su - nagios
/usr/local/nagios/libexec/check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -2 -t 90 -c check_powerstate

provide a screenshot of the results.

[scharft]

this would be the correct format of the command

./check_nrpe -H atviectxddc051.eumfgdc.eumfg.immuno.baxter.com -2 -t 90 -c check_powerstate -a atviectxrdc001.eumfgdc.eumfg.immuno.baxter.com

result:

[root@atvienag001 libexec]# ./check_nrpe -H atviectxddc051.eumfgdc.eumfg.immuno.baxter.com -2 -t 90 -c check_powerstate -a atviectxrdc001.eumfgdc.eumfg.immuno.baxter.com
Powerstate seems to be OK

your example:
./check_nrpe -H atviectxpcm851.eumfgat.eumfg.immuno.baxter.com -2 -t 90 -c check_powerstate

[cdienger]

Okay, so now we know that the command will work if given the proper arguments. Please provide a copy of the ccm database so I can take a closer look at the current configuration. Send it to me via a private message.

If the default database is being used then this can be done from the command line with:

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mysqldump -uroot -pnagiosxi nagiosql > nagiosql.sql

If the database has been offloaded to another machine then you'll need to modify the commands slightly to look like:

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mysqldump -h database_host_ip -uusername -ppassword nagiosql > nagiosql.sql​​

Please provide the nagiosql.sql that is created.

[scharft]

Hi,

thank you the issue is resolved.

best regards

[scottwilkerson]

Hi,

thank you the issue is resolved.

best regards

Great!

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