storage-efs-mountfilesystem.config EFS write access stopped working but we didn't make any changes.

[teamsaasbox]

Hi,

EFS is mounted successfully and when connecting to EBS instance via SSH I have read/write access.

But from the running NodeJS process write access started failing with a EACCESS error with no notable changes in our configuration.

Logs:

ip-10-0-2-103 web: Unhandled rejection Error: EACCES: permission denied, mkdir '/efs/42652a13-66a3-4dd3-960e-243dc0160ee6/templates/a0709963-1d9d-40b3-90f9-f542a909db30'

We use: configuration-files/aws-provided/instance-configuration/storage-efs-mountfilesystem.config

Here is the output from ls -al:
drwxr-xr-x 3 995 993 6144 Jan 6 19:38

Somehow the user/group changed to 995 and 993 (or were always that way).

Thanks

[teamsaasbox]

efs]$ sudo chmod 777 -R ./* fixed the problem. But somehow something changed by AWS in EFS / EBS without us making an explicit update.