Logstash

Monitoring unbound(8) using Net-SNMP, Telegraf, InfluxDB and Elasticsearch

2018-06-18 809 words, 4 minutes
dns
elasticsearch
grafana
influxdb
logstash
monitoring
openbsd
snmp
telegraf
unbound

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).

Monitor OpenSMTPD using Logstash and Grafana

2018-01-29 491 words, 3 minutes
elasticsearch
grafana
logstash
opensmtpd
syslog

Logs are usefull. Graphs are sexy. Here’s a way to get a view on what happens to your OpenSMTPD traffic, using Web v2.0 tools ; namely Logstash & Grafana.