Monitoring pf(4) using snmpd(8), Telegraf and Grafana

       514 words, 3 minutes

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.

Continue reading...


Remove all WordPress Featured Images

       109 words, 1 minutes

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:

Continue reading...


Synology DSM monitoring with Monit

       331 words, 2 minutes

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.

Continue reading...


Upgrade encrypted OpenBSD from 6.2 to 6.3

       183 words, 1 minutes

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...


Backup and Restore InfluxDB databases

       276 words, 2 minutes

Once upon a time, the collectd database was hosted on the dagobah InfluxDB 1.4.x server. Then came the moment when it had to be migrated to the hoth server. The backup and restore process happened this way…

Continue reading...


28 / 89