simple-log | simple-log write by Rust

I found a solution in this question :) I have added a /etc/nginx/conf.d/load-balancer.conf and then the turn server works

stackoverflow question

You don't. Kubernetes has its own network ecosystem, which mostly acts as though every Pod and Service is on the same network. You can't create separate subnets within that, there's no way to create a separate network per logical application. You also can't control the IP range of networks in Kubernetes (it shouldn't usually be necessary in Docker either).

Generally you can communicate between Kubernetes Pods by putting a Service in front of each, and then using the Service's DNS name as a host name. If all of the parts were running in the same Namespace, and the Service in front of the database were named sl-db, then the webapp Pod could use sl-db as the host name part of the DB_URI setting.

Reading through the documentation you link to, you will probably need to do some extra work to get the Postfix MTA set up. Note that it looks like it runs outside of Docker in this setup; either you will have to port the setup to run inside Kubernetes or configure its mynetworks settings to include the network that contains the Kubernetes nodes. You will also need to set up Kubernetes ConfigMaps and Secrets to hold the various configuration files and certificates this setup needs.

So the trick here is making a custom method that returns a string to the Logger class and saves the data to the database(any database relational or NoSQL doesn't matter). I will try to explain the whole scenario:

This is a document that will store the data to the MongoDB