https://stackoverflow.com/questions/77121599/how-can-i-mount-my-aws-efs-from-my-ec2-server?

I have an AWS server running Ubuntu and cannot mount a newly created EFS by either EFS mount helper, NFS client or via IP.

I tried just what AWS suggested:

EFS mount helper -

sudo mount -t efs -o tls fs-xxxxxxxxxxxxx:/ efs

It attempts 3 times to mount then it reports

b'mount.nfs4: mount system call failed'

NFS client -

sudo mount -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport fs-fs-xxxxxxxxxxxxx.efs.eu-west-2.amazonaws.com:/ efs

Reports

mount.nfs4: Connection timed out

And via IP

sudo mount -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport <IP.address>:/ efs

Reports

mount.nfs4: Connection timed out

And now I don't know what to do. the server and EFS are in the same region and the three security groups are set to allow all traffic, so port 2049 isn't blocked.

What do you suggest? I have ploughed through acres of AWS guides and I am at a loss.