Do containers retain the process's memory or flush them constantly? - Cloudflare Developers

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Anon

AAnon Do containers retain the process's memory or flush them constantly?

Isaac McFadyen

I

Isaac McFadyen•11/1/25, 4:01 PM

They retain it for the lifetime of the container.

Isaac McFadyen

I

Isaac McFadyen•11/1/25, 4:02 PM

When the container is shut down the memory goes with it though, the same as you'd have on e.g. Docker

Isaac McFadyen

IIsaac McFadyen They retain it for the lifetime of the container.

Anon

A

AnonOP•11/1/25, 4:05 PM

I have some caching logic in my app, an I configure it(the container) so it stays up for 24hrs before restarting? And does that impact my bill drastically?

Anon

A

AnonOP•11/1/25, 4:05 PM

I have hard limits so the ~~program's~~ cache's memory usage doesn't exceed 2GB

Anon

AAnon I have some caching logic in my app, an I configure it(the container) so it stay...

Isaac McFadyen

I

Isaac McFadyen•11/1/25, 4:08 PM

You will be billed for the entire 24h, so yes it would impact your bill fairly heavily.

Isaac McFadyen

IIsaac McFadyen You will be billed for the entire 24h, so yes it would impact your bill fairly h...

Anon

A

AnonOP•11/1/25, 4:10 PM

Thanks for taking the time to answer me <3

Julian

JJulian Is possible to subscribe to the beta? when i try to deploy the containers-templa...

<@235148962103951360>

<

<@235148962103951360>•11/1/25, 6:10 PM

i beleive you need to be on the workers paid plan

Dubz

D

Dubz•11/1/25, 6:15 PM

Curious how much something like vaultwarden would cost to run on here with a few users and devices phoning home (basically it never sleeping)

<@235148962103951360>

<

<@235148962103951360>•11/2/25, 1:42 AM

i believe the only ways is via fetch requests and websockets to directly communicate with it

xvvvyz

X

xvvvyz•11/2/25, 3:22 AM

hello, can we hide these logs when starting a container?

Error checking if container is ready: The operation was abortedError checking if container is ready: The operation was aborted

J1mb0

J

J1mb0•11/3/25, 11:37 AM

Hi, I've got some issues when starting my Go service. I always get this error message:
Failed to start container: The container is not running, consider calling start()Failed to start container: The container is not running, consider calling start()

And I can't find anything regarding this in the logs. Does someone has an idea how to resolve this? My current Dockerfile is working locally and in my k8s cluster, so I think it should be related to cloudflare containers

Yaopeng Liu

Y

Yaopeng Liu•11/4/25, 2:49 AM

Will container instances containing GPUs be released?

Yaopeng Liu

YYaopeng Liu Will container instances containing GPUs be released?

1984 Ford Laser

1

1984 Ford Laser•11/4/25, 3:39 AM

Nothing has been publicly announced, but I and many others have asked for this quite a bit. Lets hope it comes soon!

containers-beta
containers-beta
containers-beta
containers-beta
containers-beta

Brett Willis

B

Brett Willis•11/4/25, 3:44 AM

Is there a way to authenticate Docker to the Cloudflare image registry so that we can use docker to push directly rather than via wrangler, for usage with terraform for example?

1984 Ford Laser

11984 Ford Laser Nothing has been publicly announced, but I and many others have asked for this q...

Yaopeng Liu

Y

Yaopeng Liu•11/4/25, 4:12 AM

I really need this

tao

T

tao•11/4/25, 6:39 AM

We’re trying to trigger the deployment via Git repo.but it returns an error

J

js•11/4/25, 9:19 AM

when using startAndWaitForPorts, does 10000 requests to an unstarted container wait for the one issued start given the container has one name?

Nick

N

Nick•11/4/25, 2:19 PM

Does anyone know if there's a limit to subrequests insidea container?

Nick

NNick Does anyone know if there's a limit to subrequests insidea container?

Isaac McFadyen

I

Isaac McFadyen•11/4/25, 3:28 PM

There shouldn't be from the container itself (the attached DO is subject to the limit still).

Isaac McFadyen

I

Isaac McFadyen•11/4/25, 3:28 PM

A container has it's own networking and doesn't rely on the Workers HTTP stack so you can effectively do whatever you want (within reason)

Maulik Tyagi

M

Maulik Tyagi•11/5/25, 10:34 AM

how to call another container from one container? basically i require my first container to call another container with some processed information, issue is I dont seem to find anything related to it, like a container URL or something to call internally

Brett Willis

BBrett Willis Is there a way to authenticate Docker to the Cloudflare image registry so that w...

John Spurlock

J

John Spurlock•11/5/25, 2:24 PM

yes, you can

POST

POST

to /accounts/{account_id}/containers/registries/registry.cloudflare.com/credentials/accounts/{account_id}/containers/registries/registry.cloudflare.com/credentials with { "expiration_minutes": 5, "permissions": [ "pull", "push" ] }{ "expiration_minutes": 5, "permissions": [ "pull", "push" ] } in the body to generate tmp credentials, it will return stuff you can use in docker logindocker login

J1mb0

J

J1mb0•11/5/25, 5:09 PM

Yeah thought I would give cloudflare a try, since all of my applications are already running in k8s, but this platform is totally bad. I've set everything up the right way, set my env variables etc. and my applications won't start. Idk why they won't, because you can't even debug it the right way, even with enabled observability

J1mb0

JJ1mb0 Hi, I've got some issues when starting my Go service. I always get this error me...

J1mb0

J

J1mb0•11/5/25, 5:10 PM

No one knows, what could caused this and the shittyy observability tools won't help you

J1mb0

J

J1mb0•11/5/25, 5:11 PM

This platform is so bad.... I'll contact my cc provider and get my money back

J1mb0

JJ1mb0 Yeah thought I would give cloudflare a try, since all of my applications are alr...

gruntlord6

G

gruntlord6•11/5/25, 5:55 PM

well, would you like to try and get it working? or did you just want to fire up a beta product and quit immediately after sinking time into it

gruntlord6

Ggruntlord6 well, would you like to try and get it working? or did you just want to fire up ...

J1mb0

J

J1mb0•11/5/25, 5:56 PM

I'm interested to get it to work

gruntlord6

G

gruntlord6•11/5/25, 5:56 PM

so help us help you, what is the issue? are you getting errors? is it not deploying etc

J1mb0

J

J1mb0•11/5/25, 5:58 PM

Yes sure. It is deploying and I'm getting this issue:

DataCloneError: Could not serialize object of type "DurableObjectNamespace". This type does not support serialization.DataCloneError: Could not serialize object of type "DurableObjectNamespace". This type does not support serialization.

J1mb0

J

J1mb0•11/5/25, 5:59 PM

Thats my index.ts

message.txt4.62KB

gruntlord6

Ggruntlord6 so help us help you, what is the issue? are you getting errors? is it not deploy...

J1mb0

J

J1mb0•11/5/25, 6:02 PM

Do you need something else?

gruntlord6

G

gruntlord6•11/5/25, 6:08 PM

I think the error is kind of self explanatory isn't it? you are trying to serialize and pass that when it can't be serialized

gruntlord6

Ggruntlord6 I think the error is kind of self explanatory isn't it? you are trying to serial...

J1mb0

J

J1mb0•11/5/25, 6:12 PM

Indeed it is and I think it comes from:

   await container.startAndWaitForPorts({
          ports: [8080],
                
          startOptions: {
            enableInternet: true,
            ...c.env, 
          },
        });

   await container.startAndWaitForPorts({
          ports: [8080],
                
          startOptions: {
            enableInternet: true,
            ...c.env, 
          },
        });

`

But If I remove this line, I'm getting the following error:

Failed to start container: The container is not running, consider calling start()

Failed to start container: The container is not running, consider calling start()

J1mb0

J

J1mb0•11/5/25, 6:14 PM

I only see this error in my logs and nothing else. And this application is already running in a k8s cluster without any issues

Failed to start container: The container is not running, consider calling start()

Failed to start container: The container is not running, consider calling start()

gruntlord6

G

gruntlord6•11/5/25, 6:50 PM

I don't use hono or most of your stack so I'm not really going to be much help there.

For starting and stopping the containers, I'd use one of the examples in the documentation as a reference. Right now I have a simple concept express app for backing up durable objects to r2 that gets started by a worker calling the containers durable object. My code was made by referencing one of the examples

J1mb0

J

J1mb0•11/5/25, 6:53 PM

I used the template ...

Brett Willis

B

Brett Willis•11/5/25, 11:45 PM

Got some questions about how the image registry works when specifying the image as a registry tag rather than a Dockerfile:
1. If I push a new version of an image with the same tag, will the container instances update to the new version automatically? Or do I re-deploy the durable object (with no changes)? Or do I need to push to a new tag every time and re-deploy the durable object with the new image tag?
2. If I delete an image from the registry that is still used as the active image for a container, will it cause issues when the container needs to restart?

tao

T

tao•11/6/25, 7:46 AM

Is there a way to manually trigger a redeployment of a Cloudflare Container from the web dashboard?
Our service went down unexpectedly, and we were only able to recover it by manually redeploying via Wrangler.

Brett Willis

B

Brett Willis•11/6/25, 9:24 AM

Also what's up with logging from containers? When logging JSON with console.log({ message: 'Some message' })console.log({ message: 'Some message' }), the output is pretty-printed and observability treats each line as a separate log, e.g.
- "message": "{""message": "{"
- "message": "message: 'Some message'""message": "message: 'Some message'"
- "message": "}""message": "}"

If I make it not pretty-print, then observability doesn't pick up the structured JSON, it just treats it as a normal string, e.g.
- "message": "{ message: 'Some message' }""message": "{ message: 'Some message' }"

And interestingly, writing to stdout with process.stdout.write(JSON.stringify({ message: 'Some message' }))process.stdout.write(JSON.stringify({ message: 'Some message' })) doesn't seem to emit any observability logs at all?? Am I doing something wrong?

tao

T

tao•11/6/25, 9:53 AM

Our server seems to have gone down again. The health check endpoint stopped responding for an extended period, and there were no error logs displayed on the dashboard. After redeploying a new version, we started seeing error 1101.

tao

T

tao•11/6/25, 10:03 AM

After switching to another deployed version, the service started working normally again.

tao

T

tao•11/6/25, 7:05 PM

why there is a error: Network connection lost

sampotter

S

sampotter•11/7/25, 12:52 AM

What's the easiest way to disable the container sleep timeout? Or if that's not possible is there a method to guarantee the container will restart?

sampotter

Ssampotter What's the easiest way to disable the container sleep timeout? Or if that's not ...

1984 Ford Laser

1

1984 Ford Laser•11/7/25, 1:26 AM

You could stop()stop() (or destroy()destroy()) then start()start() it again?

Elia

E

Elia•11/7/25, 3:24 AM

Quick feedback: my containers crash when using startAndWaitForPortsstartAndWaitForPorts

Works fine on local but immediately crashes on CF infra without any logs / infos

Works without (by just getting and sending requests to it) though

tao

T

tao•11/7/25, 8:38 AM

We’re frequently encountering network connection lost errors in our application.
Could someone please help investigate or provide guidance on resolving this issue?

tao

T

tao•11/7/25, 8:47 AM