Nagios Support Forum

Posted: **Tue Sep 22, 2015 9:41 pm**

Just installed nrpe agent v2.15 into a Solaris 11 box and getting the following error.
The agent however works fine in the machine when executed locally.

This is the same agent that has been working ok in other Solaris 11 boxes.
When check_nrpe is executed from the nagios server the following message comes out in the client /var/adm/messages

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[nagios@nagiosprodxi1 debug]$ /usr/local/nagios/libexec/check_nrpe -H 170.10.10.10
CHECK_NRPE: Received 0 bytes from daemon.  Check the remote server logs for error messages.

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This is from client /var/adm/messages

Sep 23 10:07:47 myrppuprddb01 nrpe[25520]: [ID 813741 daemon.error] Error: Could not complete SSL handshake. 5
Sep 23 10:07:47 myrppuprddb01 nrpe[25520]: [ID 813741 daemon.error] Error: Could not complete SSL handshake. 5
Sep 23 10:07:47 myrppuprddb01 nrpe[25522]: [ID 261363 daemon.error] Error: Request packet had invalid CRC32.
Sep 23 10:07:47 myrppuprddb01 nrpe[25522]: [ID 261363 daemon.error] Error: Request packet had invalid CRC32.
Sep 23 10:07:47 myrppuprddb01 nrpe[25522]: [ID 900267 daemon.error] Client request was invalid, bailing out...
Sep 23 10:07:47 myrppuprddb01 nrpe[25522]: [ID 900267 daemon.error] Client request was invalid, bailing out...

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root@myboxdb01:/usr/local/nagios/etc# uname -a
SunOS myrppuprddb01 5.11 11.2 sun4v sparc sun4v

Anybody got any idea what is the issue?

Posted: **Tue Sep 22, 2015 10:04 pm**

More info

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root@myrppuprddb01:/usr/local/nagios/bin# openssl version
OpenSSL 1.0.1p 9 Jul 2015

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root@myrppuprddb01:/usr/local/nagios/bin# ldd nrpe
        libssl.so.1.0.0 =>       /lib/libssl.so.1.0.0
        libcrypto.so.1.0.0 =>    /lib/libcrypto.so.1.0.0
        libnsl.so.1 =>   /lib/libnsl.so.1
        libsocket.so.1 =>        /lib/libsocket.so.1
        libc.so.1 =>     /lib/libc.so.1
        libmp.so.2 =>    /lib/libmp.so.2
        libmd.so.1 =>    /lib/libmd.so.1
        libsoftcrypto.so.1 =>    /lib/libsoftcrypto.so.1
        libelf.so.1 =>   /lib/libelf.so.1
        libcryptoutil.so.1 =>    /lib/libcryptoutil.so.1
        libz.so.1 =>     /lib/libz.so.1
        libm.so.2 =>     /lib/libm.so.2
root@myrppuprddb01:/usr/local/nagios/bin#

Posted: **Wed Sep 23, 2015 7:40 am**

Is it possible that you reconfigured the check_nrpe binary on the NagiosXI server to accept a longer status output? That behavior is consistent with mismatched status output payloads.

Posted: **Sun Sep 27, 2015 7:10 pm**

jdalrymple wrote:Is it possible that you reconfigured the check_nrpe binary on the NagiosXI server to accept a longer status output? That behavior is consistent with mismatched status output payloads.

We did change check_nrpe for some servers but it is named differently (check_nrpe_big) and not possible it is using it.
The installer also haven't been changed for ages.

Anyway I tried the older nrpe agent compiled in Solaris 10 and it worked fine.
Not sure what was the issue but we will double check your theory if this happens again.

Thanks

Please close the case.

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