Question

Cannot ping outside the Docker (Apps)

Hey!

Forgive me if it’s something stupid to ask but I didn’t found any info regarding this.

I created an App on DO and deployed repo with Docker file which looks like this:

FROM ubuntu

RUN apt-get update && apt-get install -y iputils-ping

FROM node:16

WORKDIR /home/app

COPY . /home/app

RUN npm install --only=development
RUN npm run build

COPY . /home/app

# Start the server
CMD [ "node", "./build/app.js" ]

My app is a simple node.js server but part of it’s functionality relies on ping utility and it seems that it’s doesn’t work as expected.

When I try to run in console:

ping 127.0.0.1 everything works fine, however pinging any outer network just won’t do anything:

ping goo.gl
PING goo.gl (142.250.74.206) 56(84) bytes of data.

and that’s all, it juts hangs until <C-c> sequence, then:

^C
--- goo.gl ping statistics ---
7 packets transmitted, 0 received, 100% packet loss, time 10ms

Am I’m missing something ?

Appreciate any help on this!


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Hey @spoonerdel,

It sounds like that the ICMP traffic might be disabled on the App Platform.

I think that a better fit for this use case might be a simple Droplet with Docker installed:

https://marketplace.digitalocean.com/apps/docker

That way you will not have that network restriction as with the App Platform.

Hope that helps!

- Bobby.