I want to build a replica set. The conf files of my 3 machines are attached. I booted the primary machine. The process started correctly. However, I cannot add the 2nd and 3rd machines, that is, the secondry machines. The error I get when I run the rs.add(“192.168.122.203:27017”) command; “errmsg” …

The problem here is related to linux. I disabled the service called iptables first. Then I repeated the process and the problem was solved. #systemctl disable iptables