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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VMware provides a vCenter (Linux) Appliance since vSphere 5. Unfortunately, the one shipping with 5.0 was a bit low on features. I am giving a try on v5.1 and it is far better. Except that SNMP in not enabled…
I’ll keep the quick&dirty directions here. The source link is already quite complete.
Continue reading “Monitoring VMware vCenter Appliance with SNMP”
OpenBSD ships with an LDAP daemon since 4.8. I have an all-in-one server from which the LDAP service has to be shipped out. I’m going to replace that OpenLDAP daemon with the LDAP daemon from OpenBSD 5.1. I already wrote about how to enable LDAP on OpenBSD 4.8.
Those will be updated notes for OpenBSD 5.1 and additional directions to allow monitoring the LDAP activity using SNMP and Xymon server.
Continue reading “Monitoring OpenBSD’s LDAP daemon”
I already wrote about how to enable and configure SNMP on VMware ESXi 5. But I was quite short on what you really get from SNMP. Here’s a bit more details.
Continue reading “What you get from ESXi using SNMP”