Install a 2nd External Node Exporter
All the steps in this lecture are the same as the earlier lecture where we installed the node-exporter as a service, but this time we also create a specific firewall rule to only allow my main prometheus server to access the metrics data,
iptables -A INPUT -p tcp -s localhost --dport 9100 -j ACCEPT iptables -A INPUT -p tcp -s [your prometheus server domain name or ip] --dport 9100 -j ACCEPT iptables -A INPUT -p tcp --dport 9100 -j DROP iptables -L
And we will also add the scrape config for the new node-exporter to the prometheus.yml
- job_name: 'the name of your new new node-exporter' static_configs: - targets: ['your new new node-exporters domain name or ip:9100']
and restart the prometheus service.
sudo service prometheus restart sudo service prometheus status