# Deployment failed: no such host **URL:** \ **Category:** General Discussions\ **Tags:** yocto\ **Created:** [July 15, 2024, 8:37am UTC](https://hub.mender.io/t/deployment-failed-no-such-host/7020 "2024-07-15T08:37:18Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![tastex](https://avatars.discourse-cdn.com/v4/letter/t/a587f6/32.png) [@tastex](https://hub.mender.io/u/tastex)\ **Post date:** [July 15, 2024, 8:37am UTC](https://hub.mender.io/t/deployment-failed-no-such-host/7020/1 "2024-07-15T08:37:18Z")
I have a problem with deploying from our self-hosted mender server to our devices, the error log says: "Can not fetch update image: Get "[https://s3.docker.mender.io/mender-artifact-storage/](https://s3.docker.mender.io/mender-artifact-storage/) … “: dial tcp: lookup [s3.docker.mender.io](http://s3.docker.mender.io) on 10.212.220.253:53: no such host” Is this a server-site issue? ---
**Author:** ![TheYoctoJester](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/theyoctojester/32/1444_2.png) [@TheYoctoJester](https://hub.mender.io/u/TheYoctoJester)\ **Post date:** [July 15, 2024, 8:45am UTC](https://hub.mender.io/t/deployment-failed-no-such-host/7020/2 "2024-07-15T08:45:17Z")
Hi @tastex, it means that your server side is configured to use `s3.docker.mender.io` as the artifact storage URL, which is obviously not correct. So you’re probably running the demo server. In order to use it, you must adjust your client configuration to use the demo certificates, and have either your DNS or the clients `/etc/hosts` resolve the URL to your demo server. Please note that this is, as the nomenclature strongly suggests, a way to demo and test Mender functionality, and by no means production grade. See the documentation for installing on k8s for this: [Production installation with Kubernetes | Mender documentation](https://docs.mender.io/server-installation/production-installation-with-kubernetes) Greets, Josef