Hello
If you use the same settings as the first node you can use those settings on the second node with the same port, if you wish.
On a second note… @aaronsachs is referring to this Format topics with Markdown
Also he was referring to this with the red box around it.
Also, this would have helped. If you having a hard time editing your post, you could have used a text file prior to posting your issue. Once done just copy & paste here.
Example:
Description of your problem
Elasticsearch is broken after an upgrade
Description of steps you’ve taken to attempt to solve the issue
Rebooted system
Search log files for elasticsearch and Graylog
Environmental information
Operating system information
Ubuntu 20.0.1
Package versions
Graylog 4.1.0
MongoDB 4.4.0
Elasticsearch 7.10