Struggle with 'Get started with docker'

Docker Desktop
1

Hi folks,

i’m new to Docker and i’m still walking through the ‘Get Started’ article. So far, Docker for Windows is installed and Kubernetes is running. At the point to enable Docker swarm i ran into some issues because Docker asked some unexpected questions to me.

I execute the command ‘docker swarm init’ and i receive following:

grafik
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Reading the CLI reference shows up the opportunity to bind an adapter. So i ran this command:

“docker swarm init --advertise-addr WLAN”

Running the command ‘docker service create --name demo alpine:3.5 ping 8.8.8.8’ as a test afterwards, it says: “1/1 no suitable node (unsupported platform on 1 node)”

What is this meant to be? Any suggestions?

Greetings from Germany
Chris

2

Is it safe to asume that “WLAN” actualy is a placeholder for the ip of the network adapter? Make sure to use a fixed ip. Swarm doesn’t realy like it, if the ip of nodes change…

Seems like your installation is switched to run Windows containers, see: Sign in to Docker Desktop | Docker Docs

Your command should work like this: docker service create --name demo --platform linux alpine:3.5 ping 8.8.8.8, see https://blogs.msdn.microsoft.com/appconsult/2018/09/20/running-containers-based-on-different-platforms-side-by-side-with-docker-preview/

3

Hello Metin,

thanks for your reply. Please let me answer your question.

‘WLAN’ isn’t a placeholder. It’s the name of my WiFi adapter in Windows. Ah ok, using DHCP is the reason for this … :smiley:

Regarding to Windows and Linux containers. As a default the linux containers are used. What can be a reason to use Windows containers?

Greets,
Christian