Unable to schedule backup to S3

[kirangowda29]

We are facing error in scheduling backup to S3.

The error is:
Amazon.Runtime.AmazonServiceException: A WebException with status NameResolutionFailure was thrown. ---> System.Net.WebException: Error: NameResolutionFailure

[kenkendk]

It looks like a network error? The machine in question cannot make a DNS lookup for the AWS S3 hostname you are using.

If this is a new S3 bucket, there is sometimes a delay in the registration of DNS records.

[kirangowda29]

This is not not new S3 bucket, the same configuration was working in earlier version of Duplicati. We configured this new version recently and its not working.

[ts678]

working in earlier version of Duplicati. We configured this new version

What is the new version? Do you know old one? About --> System info will show both, if you updated via Duplicati updater.

What OS? Does Test connection work? If Docker, where is image from?

[kirangowda29]

What is the new version? --> 2.0.7.1
Do you know old one? --> Don't exactly remember the old one as we deleted the server, may be 2.0.2
What OS? --> Oracle Linux
Test connect result:

Docker image --> https://github.com/linuxserver/docker-duplicati

[ts678]

So someone else's image, not by Duplicati project. I don't have Docker, but can you resolve the name inside the container, maybe using a docker exec and nslookup or ping or whatever is available? I don't know why Duplicati would resolve any differently.

we deleted the server

Did you export the Duplicati config and use that to set up the new Duplicati? If not, possibly the Server name was entered wrong. What's in that field is what's looked up, so you also don't want to be adding additional prefixes to it (e.g. https) to make it a URI.