Ajitabh Pandey wrote: > Hello, > > I am running Collectd server on my OpenBSD 6.1 box and various clients > are > sending stats to this box. I see /var/collectd that various RRDs are > getting created. However, I am not sure what should I used to see the > graphs. I looked at RRDCGI but it looks way complicated to setup. I > could > not find collectd-web package also. > Hi,
I have being using Collectd for remote telemetry in my Lab for over 4 years and I have being running Collectd server on OpenBSD for the past two. The lack of decent working front-end is the Achilles tendon of Collectd which IMHO is eventually going to kill the project now when it is becoming clear that Whisper has some advantages over RRD. Before I go any further let me know what I do and what works really well. The best front end for Collectd is in fact Observium and its fork LibreNMS which is in OpenBSD ports. http://www.observium.org/ Observium is main polling protocol is SNMP. Setting Observium/LibreNMS is not trivial but it is not too difficult either. You can find my and Stuart's discusion on misc how to set LibreNMS which runs fairly well on OpenBSD. His pkg-readme is must! Before the LibreNMS fork which occurred 2 years ago I was using https://www.turnkeylinux.org/observium since Observium project explicitly doesn't support anything except Ubuntu and Debian. Once you have Observium or LibreNMS polling your devices displaying collectd graphs is just adding a line in the Observium/Collectd config file which will point the application to the location of RRD files gathered by collectd server. The only caveat is that you have to poll the device to be able to see collectd button which will take you to magnificent graphs. This did hurt me personally as I don't SNMP poll KVM guests on one of my KVM hosts but I do have RRD data for the guests via collectd KVM plugin. The another really big problem with Observium/LibreNMS is the lack of a proxy which is needed for monitoring devices behind firewalls. You don't have that problem with collectd which works on the push principle. It is a bit of problem for me as I do have a private subnet behind somebody's else firewall. Recently, a front-end for Collectd, called facette has being added to ports http://openports.se/sysutils/facette It is dead simple to set up but useless as each graph has to be created manually from data. With my RRD folder containing close to 1500 files that is just ridicules. Observium/LibreNMS automatically create graphs for all available RRDs minus the KVM guest caveat. The only other front-end for Collectd which actually works (at least for me) is Collectd-web https://collectd.org/wiki/index.php/File:Collectd-web.png It does create graphs automatically for all available devices but the quality of both interface and graphs is inferior comparing to Observium/LibreNMS. I will finish this long post by bringing to your attention that Collectd can send time-series directly to carbon-aggregator which in turns writes it to Wisper. https://collectd.org/wiki/index.php/Plugin:Write_Graphite That will enable you to see your time-series using Graphite-web (IIRC doesn't run on OpenBSD). We have played in my Lab (machine learning/statistical data-mining) with Graphite-web due to our internal needs for a good tool for time-series display. I can tell you that Graphite is second to none in what it does and we are using it for our research (but not for infrastructure monitoring). Best, Predrag P.S. I am looking forward to see what other people have to say about this topic. > Searching on web I see that for a non-chrooted web server there are > straight forward scripts available. Most of the instructions are for > linux. > > I would prefer to use OpenBSD httpd and not resort to non-chrooted > apache > or nginx. I am finding it really difficult to find something suitable > which > works under chroot. > > I am able to run a hello world cgi script in chroot. > > If any of you guys have some information/config/tool etc to share for > collectd graphs, it would be of great help. > > Thanks & Regards. > -- > Ajitabh Pandey
