Hi @Ranganath_Kini - Welcome to the community!
Connection should be possible from Linode to the Atlas instances but you wouldn’t have any of the cloud provider (GCP,AWS, Azure) integration options like VPC peering or private endpoints. However, Atlas is secure by default as communications are encrypted using TLS and has IP access list capabilities which limits exposure of the Atlas endpoints to certain IP’s which user’s control.
We are specifically looking for guidelines, suggestions and ways to setup DB Network Access from our Linode instances.
I currently am not aware of any blogs or guides that we have that would assist with this specifically regarding Linode and Atlas. In saying so, perhaps the following documentation regarding Atlas connectivity and security may be of useful to you:
It would also be great to know your experience of connectivity from Linode to Atlas as well.
Hope the above helps.