I’ve enabled an OpenBSD unbound(8) daemon that is used as a central DNS cache resolver. Now I needed to know what it was doing and how it performed. The question was answered grabbing statistics from unbound and render them using Grafana.
The whole monitoring stack is composed of Net-SNMP, Telegraf and InfluxDB for the metrics part ; and syslogd(8), Logstash and Elasticsearch for the logs part. Of course, most of those run on OpenBSD (6.3) ; except Telegraf, which is not available (yet).
Continue reading “Monitoring unbound(8) using Net-SNMP, Telegraf, InfluxDB and Elasticsearch”
I regularly check my pf(4) activity using pfctl(8) and pflogd(8). I already monitored pf using collectd(1) and rrdtool. This time, I wanted to use my already configured InfluxDB/Grafana system. The thing is, Telegraf is not (yet) available in OpenBSD 6.3. So I used a Telegraf container to remotely poll OpenBSD using the native SNMP OPENBSD-PF-MIB.
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I used to use “Featured Images” in my posts to illustrate the main tag. Now that I changed my theme (namely Twenty Fourteen), those icon-sized images don’t show up well. I decided to simply drop them all so that nothing is displayed by the theme. This is done easily using MySQL:
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Monit is small, monit is fast, monit is installed on each of my servers. Unfortunately, I couldn’t found a package for Synology DSM 6. Hopefully, DSM is based on Linux and Monit provides binaries. So let’s install, run and monitor DSM using Monit.
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I took the time to switch from OpenBSD 6.2 to 6.3 on my Cloud instance with encrypted disk. As usual, it went smooth and troubleless. For the record, here are the directions.
Continue reading “Upgrade encrypted OpenBSD from 6.2 to 6.3”