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Monday, May 14, 2012

[Updated] Compiling an RPMForge-compatible Nagios 3.5.0 RPM


At some point I had the brilliant idea of replacing our hand-compiled build of Nagios with RPMForge's RPM version.

All was well with that, but RPMForge is still stuck at version 3.2.3, and Nagios 3.4.1 has just been released.

There's one patch from Icinga which we really want, by Icinga core developer Michael Friedrich (@dnsmichi), which fixes perfdata issues (a regression in nagios 3.3.1 which is still not fixed in 3.4.1):

re-allow perfdata with empty results being put on perfdata channel, disable via opt-in cfg option

Updated, Sept 5th, 2012:

Nagios users have reported memory leaks if embedded perl is compiled in, even when not used, so I've removed it from the configuration in the nagios.spec file.

In this build, I also re-implement execv (bug 346) using my fixed regexp. Double quotes and escape characters are no longer an issue. This is based on the changes to checks.c in Icinga to implement execvp.

I've also fixed a problem with pagination in pages generated by a hostname search in the Nagios 3.4.1 status.cgi.

Fixed too is a sorting issue on paginated pages (bug 381).

Also included are cvelasco's patches for a problem with scheduled downtimes (bug 338) and some memory leaks in 3.4.1 (bug 339).

So, to build a Nagios 3.4.1 RPMForge-layout compatible RPM on CentOS 5.x, I did the following:

1: Download nagios-3.2.3-3.rf.src.rpm and install (you'll need the --nomd5 switch in rpm).

2: Download nagios-3.4.1.tar.gz into /usr/src/redhat/SOURCES

3: Download my perfdata.patch into /usr/src/redhat/SOURCES

4: Download my execv-v2.patch into /usr/src/redhat/SOURCES

5: Download my status.patch into /usr/src/redhat/SOURCES (this will be in Nagios 3.4.2)

6: Download my status-paginate.patch into /usr/src/redhat/SOURCES

7: Download the downfix-6.patch into /usr/src/redhat/SOURCES

8: Download the leaks1-2.patch into /usr/src/redhat/SOURCES

9: Download my nagios.spec into /usr/src/redhat/SPECS

10: rpmbuild -bb /usr/src/redhat/SPECS/nagios.spec

The built RPMs will be left in /usr/src/redhat/RPMS/i386.

They'll happily install over the old RPMForge Nagios 3.2.3 RPMS.

Enjoy.

Postscript, July 18th

The perfdata patch has been checked in to Nagios by the developers. Lets hope the execv one follows.

Postscript, November 13th

The forthcoming Nagios 3.4.3 includes all but the execv patch, so a slight mod to the spec file to change the version to 3.4.3 and include only that patch (or not, as you choose) is all that's needed to get 3.4.3 built in RPMForge-compatible style.

Postscript, May 8th, 2013

Now updated for Nagios 3.5.0. I've left the above instructions intact for historical reasons.

Apart from my execv patch, there are two additional patches, from the Open Monitoring Distribution team. Were I to build a Nagios server today, I'd use OMD.

The build instructions now are:

1: Download nagios-3.2.3-3.rf.src.rpm and install (you'll need the --nomd5 switch in rpm).

2: Download nagios-3.5.0.tar.gz into /usr/src/redhat/SOURCES

3: Download my execv-v2.patch into /usr/src/redhat/SOURCES

4: Download 0006-fix_f5_reload_bug.dif into /usr/src/redhat/SOURCES

This fixes an annoying screen refresh bug in the Nagios web interface.

5: Download 0007-fix_downtime_struct.dif into /usr/src/redhat/SOURCES

This reverts a Nagios API change which was incompatible with check_mk, which manifested itself as crashes at midnight during Nagios log rotation, and maybe at other times too.

6: Download my nagios.spec into /usr/src/redhat/SPECS

7: rpmbuild -bb /usr/src/redhat/SPECS/nagios.spec

The built RPMs will be left in /usr/src/redhat/RPMS/i386.

Enjoy.


Posted by Phil at 5:24 PM
Edited on: Wednesday, April 01, 2015 10:52 PM
Categories: IT