I have a couple of instances created in the same VPC. Create an EFS to have a "store" in the pair of instances, likewise when creating the EFS I make sure to be in the same Region as where I create the EC2 Instances and on the same VPC.
Having already created the EFS and opening it with the "Associate" option, I observe the recommendations of the mount command , but when I do it in any of the two EC2 instances it keeps me thinking.... and it never mounts :'(
The Network options of the EFS resource have a security indicated as "sg-cd669dcb (default)", that when looking at it in the Security Groups, I see that the Input and Output ports are 100% open because it says: All Traffic (in both of them).
Anyway, I still can't mount the resource and I've run out of ideas :'(.... What do you recommend?
Update 06/16/2021
To have the AWS EFS better organized, in the security part I have removed the "default" and placed a security group called "nfs", which configures everything open like this:
despite this I still can't mount it, not even from an EC2 instance, less from my own laptop :(