EFS not mounted to AWS PCS Login Compute Node Group Instance

Question

I followed AWS PCS documentation - [Getting Started](https://docs.aws.amazon.com/pcs/latest/userguide/getting-started.html) sections.

In Login Node instance, I don't see EFS mounted to it.

Typically **/home** should be configured as NFS mount per documentation.

Tried to mount using **amazon-efs-utils** as below (replaced REAL_EFS_FILE_SYSTEM_ID with real EFS Id):

```
  - mkdir -p /tmp/home
  - rsync -a /home/ /tmp/home
  - echo REAL_EFS_FILE_SYSTEM_ID:/ /home efs tls,_netdev" >> /etc/fstab
  - mount -o iam -a -t efs defaults
```
Got Error: 
> mount.nfs4: access denied by server while mounting 127.0.0.1:/

I have following Policy in IAM Role associated with IAM Instance Profile attached to Login Node:
```
arn:aws:iam::aws:policy/AmazonElasticFileSystemClientReadWriteAccess
```

Wonder why EFS is not mounted ?

enrico-aws · Answer

Hi @RDX,
were you able to solve the issue?

In case like this I'd start checking Security Groups associated to the cluster, checking if port 2049 is accessible.

References:
* https://docs.aws.amazon.com/efs/latest/ug/accessing-fs-create-security-groups.html
* https://docs.aws.amazon.com/pcs/latest/userguide/getting-started_create-sg.html

Enrico

EFS not mounted to AWS PCS Login Compute Node Group Instance

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