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I have two centos Machine, Machine A and Machine B. In machine A i have installed collectd and influxdb. So, the system metric from machine A is pushed into influxdb using collectd. I have installed collectd in machine B. Now, I need to push the system metric from machine B to the influxdb which is in machine A.

Collectd uses the port 25826.

I have added the port 25826 in the iptable of machine B.ANd i restarted the iptable...But its not listening...

Can anyone help please...

adiya joshi
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1 Answers1

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CentOS uses firewalld to manage iptables.

Provided you have firewalld installed and active, just add the port to the permanent open ports table:

firewall-cmd --permanent --add-port=25826/udp

Then reload the firewalld config:

firewall-cmd --reload

Now you can check that the port is open on the machine with:

firewall-cmd --list-ports

Edit: fix the rule to be 25826/udp

Graham Leggett
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Blai Peidro
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