Permanent host name or IP address

Docker
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#1

How to configure docker container Hostname or IP address permanently?

#2

Hi @Kishor
There’s nothing permanent in containers, as they are ephemeral by design.

While starting the container with docker run command, you can provide -h flag to provide a hostname and --ip to set an IP address and --net flag attaches a container to a specific network.

docker run --net mynet123 -h myhostname --ip 172.18.0.22 -it ubuntu bash

#3

Thank you! for the reply @Santosh_KodeKloud
But my application requires a permanent hostname or IP address. How can I achieve this?

#4

Thought about Kubernetes?

#5

What you think about aws ecs?

#6

That would work too.

Either way you need a container orchestration system (like kubernetes, or ECS) that has a “front door”, usually a cloud load balancer which has the permanent address. Routing performed by the container orchestration system sends the request to the correct container., even if it is restarted and replaced by a new container running the same application.