How to reach the Centos server from the Internet through 2 routers operating in WDS mode?

Question

CentOS

Good afternoon.
I need to access the Centos server from outside, through 2 routers. (See Fig. Diagram)
My thoughts:
On router No. 1, I changed the web connection port from 80 to 8080.

And I was able to reach it from the Internet, through a dynamic ip issued by the provider.
On router number 2 (on which OpenWRT), as I understand it, you need to connect to the first router in WDS client mode?

I also think that you need to disable DHCP on the second router (so that my server is on the same network as the first router), but I don’t know how to do it .., and I also don’t know how to open ports on the first and second router ..
I ask for help in this matter)

Answer 1

The first step on the TP-Link WR841ND is to forward the port to centos.
corrected.