Will you notify in this channel when this potential fix has been released? It seems from our testing

Will you notify in this channel when this potential fix has been released?
It seems from our testing that this is the only issue we have blocking us from starting to route some small part of our production traffic to CF Containers

Aarnar Will you notify in this channel when this potential fix has been released? It se...

Sean•10/3/25, 4:24 PM

Second this, seems to be the only issue blocking us from deploying

piemaking•10/3/25, 6:44 PM

Trying to setup a container from within a NextJs obviously via Opennext.

It’s failing on loading “Cloudflare:workers” from the containers library,

dr.dj•10/4/25, 3:45 PM

Hi all, is there an easy way to tail logs inside your container, ala npm wrangler tail some.container.idnpm wrangler tail some.container.id?

Alex Dahl•10/5/25, 9:25 AM

Containers look great! I'm currently running a bunch of machines on fly.io for my workload. (fast api + duckdb) The only feature missing from containers seem to be the lack of persistent disk, which I use for the duckdb file. I think I can work around that with R2 and lifespan in fast api though!

Can we do an R2 binding for containers or should I set up a typical access/secret key thing?

Edit: pre-emptively answered here! containers-beta

Cloudflare Docs

Frequently Asked Questions

Frequently Asked Questions:

kingkm70•10/5/25, 2:31 PM

Hello - I have a couple of issues with containers.

#1) My container isn't logging anything. I can see a call that passed to container, but nothing shows up in the container logger.

For example:

I have a simple endpoint that passes a ping to the container...

./scripts/ping.sh
- Target URL: https://<cfworker>.workers.dev
{
"success": true
}

This I see in my CF Worker log...
2025-10-05 14:13:01:654 UTC
GET /ping
Error checking 8080: The container is not listening in the TCP address 10.0.0.1:8080

But the:

{
"success": true
}

is returned from my container.

#2) My container is trashing. Meaning I'm seeing it being shutdown every couple of minutes.

I have it set for sleepAfter = "60m"; -- so it shouldn't be going down randomly...

Any insights would be greatly appreciated.

FiveGuys•10/5/25, 5:58 PM

Was in the private BETA and now getting The image registry does not existThe image registry does not exist. User account is linked to profile.

xrendan•10/5/25, 10:59 PM

I am also not seeing any logs from my containers. I just get: There are no events in the selected timeframeThere are no events in the selected timeframe

The container is running as expected, I just don't see any logs for it.

Xxrendan I am also not seeing any logs from my containers. I just get: `There are no even...

kingkm70•10/5/25, 11:28 PM

Me too!

Xxrendan I am also not seeing any logs from my containers. I just get: `There are no even...

kingkm70•10/5/25, 11:33 PM

I'm also getting a lot of thrashing ... meaning my container is being stopped and/or reported as stopped. I have a ping endpoint that is working...meaning I can reach my container...meanwhile I'm seeing the container print the message ...

export class IcebergCommitter extends Container<Env> {

defaultPort = 8080;
sleepAfter = "60m";
envVars = { var stuff };

async fetch(request: Request): Promise<Response> {
return await this.containerFetch(request, this.defaultPort);
}

override onStart() {
console.log('Container successfully started');
}

override onStop() {
console.log('Container successfully shut down');
}

override onError(error: unknown) {
console.log('Container error:', error);
}

async alarm() {
console.log('Alarm called (no-op)');
}

}

I'm seeing alarm called...even though I haven't set any alarms and 'Container successfully shut down' for no apparent reason...

The fact that I can't look at the logs is a bit hard to diagnose. I do see logs on the Durable Object associated with container. I would suggest looking there.

FFiveGuys Was in the private BETA and now getting `The image registry does not exist`. Use...

pandalambda2•10/6/25, 5:12 AM

There no bindings to CF services that you can use in your container, you have to go through the crippled REST frontends for these services such as D1, R2, KV etc..

pandalambda2•10/6/25, 5:12 AM

That said if you read the capnweb blog post there's a hint at the end that suggests to me they'll eventually rollout some SDKs to talk to CF Services with capnweb as the protocol

pandalambda2•10/6/25, 5:13 AM

whoops that was meant to be for aleda145

GeekCorner•10/6/25, 10:55 AM

Would you be able to run a discord gateway bot in Containers with the base plan?

MMike Nomitch Both are planned. First step -> We're working on generic requests from containe...

rdimartino•10/6/25, 2:10 PM

also very interested in the container -> worker request with the specified hostnames you mention here! how do I stay updated on when something like that is live in the beta?

Ppandalambda2 There no bindings to CF services that you can use in your container, you have to...

gruntlord6•10/6/25, 3:41 PM

they don't have internet access do they? I thought the durable object has to handle that. That said the durable object does have access to those things so it can proxy them, but for things like downloading a file thats not really practical

gruntlord6•10/6/25, 3:42 PM

for example I have a container that uploads to R2 with the durable object using multi part uploads, but downloading is another story since the files are too big for the durable object to handle

Kkingkm70 I'm also getting a lot of thrashing ... meaning my container is being stopped an...

Wonky Onion•10/6/25, 4:32 PM

Ah the container package is using alarms under the hood right now to keep your container alive, since the DO has to be alive for the container to be alive. so probably that no-op alarm handler is overriding that and causing the thrashing

you can use scheduleschedule on the container class instead of alarms for now if you need that functionality.

Jonas•10/6/25, 8:24 PM

Is the .exec planned to be released anytime soon?

JJon M.So wait, containers can't actually access R2 yet?

Isaac McFadyen•10/6/25, 11:19 PM

Containers can access R2 but they need to use the S3 API, there's no direct binding yet.

Isaac McFadyen•10/6/25, 11:19 PM

https://developers.cloudflare.com/r2/api/s3/api/

Peps•10/7/25, 9:24 AM

looks like https://developers.cloudflare.com/containers/pricing/#instance-types is still outdated, as I'm not seeing the new instance types there, and it's still showing the deprecated/legacy

dev

dev

type too

Cloudflare Docs

Pricing

Containers are billed for every 10ms that they are actively running at the following rates, with included monthly usage as part of the $5 USD per month Workers Paid plan:

PPeps looks like https://developers.cloudflare.com/containers/pricing/#instance-types ...

kian•10/7/25, 11:59 AM

oop, looks like we only updated /limits/

kian•10/7/25, 11:59 AM

will fix

ItsWendell•10/7/25, 5:36 PM

Do containers have the same limits as workers in terms of outbound concurrent connections?

Let's say I want my container to have 100 concurrent connections at any given time when it's active, will that just work?

JJon M.Are there any tips to increasing rollout speed of new containers?

kian•10/7/25, 5:36 PM

rollout_active_grace_periodrollout_active_grace_period & rollout_step_percentagerollout_step_percentage in the Wrangler config: https://developers.cloudflare.com/workers/wrangler/configuration/#containers

kian•10/7/25, 5:37 PM

rollout_active_grace_periodrollout_active_grace_period defaults to 0 so unless you set it already then it won't really change anything

McKamyk•10/7/25, 8:46 PM

is there anyway for the container to call/instruct the DO that commands it? I know bindings aren't really passed into the container, but how can the container talk back up to cloudflare?

Do I just have to

fetch()

fetch()

on the worker's URL? Does this count as egress?

Also would be really cool if wrangler, running the container, could configure the local container to run with host networking, so that the container can call my worker using localhost

Ari•10/7/25, 11:30 PM

If we connect a container to R2, does that trigger paid egress on the container, or like workers is that considered free egress?

AAri If we connect a container to R2, does that trigger paid egress on the container,...

1984 Ford Laser•10/7/25, 11:34 PM

I feel like there needs to be a sticky for this question or something. Currently, a Container sending to R2 does count as egress

Ari•10/7/25, 11:54 PM

Ahh okok, ty! Yeah

CodingCoop | Co-Founder Nullshot•10/8/25, 8:44 AM

Hey all - Anyone submit the use case to being able to override the instance type of a container as a start param / argument?

Right now I would need to setup a N classes that extend my CustomContainerClass which is configured as separate durable objects / containers in wrangler.

Ideally I am able to have a default instance_type in wrangler, and have the ability to increase resources dynamically.

If this is not on the roadmap / happening anytime soon, happy to implement the above solution - Just need guidance if I missed something and wondering if anyone else ran into this case.

jshm•10/8/25, 8:13 PM

Hi folks. Am I correct in saying Containers aren't supported in WfP at the moment? Is support on the roadmap at all?

pandalambda2•10/9/25, 10:41 AM

I don't think they've figured out the billing for standalone yet, be surprised if I can start spinning up containers on WfP's account like shopify and smashing egress

pandalambda2•10/9/25, 10:42 AM

getting clarification around even egress is like extracting blood from a stone, you're far back in the queue 555

Maulik Tyagi•10/9/25, 12:14 PM

Does anyone know what time length container keeps itself alive, basically my worker which is cron worker, calls containers, I'm uing cloudflare/containers npm package, and I can see logs that my container has started, in container I have my python code, which has print statements, in container logs I can see some of these print statements being logged, but then nothing happens, container code doesnt get full executed, my container then shuts down by itself, with possibly incomplete code completion, I have used sleepAfter 30m, i use wrangler tail to track logs and i get some Alarm logs every 3 minutes, then after 10 minutes, container shuts down, what can i do that code gets completed, it can take 15-20 mins to complete, my container code is a python function which do some tasks and then exit, can you guide me through this

MMaulik Tyagi Does anyone know what time length container keeps itself alive, basically my wor...

arnarOP•10/9/25, 12:24 PM

containers-beta sounds like the same issues as here?

Maulik Tyagi•10/9/25, 12:39 PM

Hmm, let me try and see this one, thanks for highlighting it

kian•10/9/25, 6:56 PM

Does it work in

npx wrangler dev

npx wrangler dev

? Surfacing our errors (since only your own logs go into the logs tab right now) in that tab is on our roadmap.

kian•10/9/25, 6:57 PM

If it is due to your Container exiting then there'll also be an exit code in that Recent Errors view in the next dash release.

nicoritschel•10/9/25, 8:32 PM

Should stdout/stderr from the container be captured in logs? I don't see either using bunx wrangler devbunx wrangler dev or on my live deployed container with logging enabled. That pane is completely empty.

kian•10/9/25, 8:55 PM

During local dev? Not yet
Deployed with Workers Observability enabled? Yes

Will you notify in this channel when this potential fix has been released? It seems from our testing

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