Amazon EFS

If you get this error...unknown filesystem type 'efs'Then use this to install the EFS mount helper...sudo yum install -y amazon-efs-utilsSee later on this page for example output

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

This is the standard NFS client command.You can also use the IP address instead of the DNS name (but note that this will make the connection AZ specific).

Unmount

Amazon Linux (EC2)

UNIX NFS

EC2

unmount /mymnt

amazon-efs-utils

Example installation output...

sudo yum install -y amazon-efs-utils

Loaded plugins: extras_suggestions, langpacks, priorities, update-motdamzn2-core | 3.6 kB 00:00:00amzn2extra-docker | 2.9 kB 00:00:00amzn2extra-kernel-5.10 | 3.0 kB 00:00:00amzn2extra-postgresql12 | 2.9 kB 00:00:00Resolving Dependencies--> Running transaction check---> Package amazon-efs-utils.noarch 0:1.35.0-1.amzn2 will be installed--> Processing Dependency: stunnel5 for package: amazon-efs-utils-1.35.0-1.amzn2.noarch--> Running transaction check---> Package stunnel5.x86_64 0:5.58-1.amzn2.0.1 will be installed--> Finished Dependency Resolution
Dependencies Resolved
============================================================================================================================================================================ Package Arch Version Repository Size============================================================================================================================================================================Installing: amazon-efs-utils noarch 1.35.0-1.amzn2 amzn2-core 57 kInstalling for dependencies: stunnel5 x86_64 5.58-1.amzn2.0.1 amzn2-core 165 k
Transaction Summary============================================================================================================================================================================Install 1 Package (+1 Dependent package)
Total download size: 221 kInstalled size: 527 kDownloading packages:(1/2): amazon-efs-utils-1.35.0-1.amzn2.noarch.rpm | 57 kB 00:00:00(2/2): stunnel5-5.58-1.amzn2.0.1.x86_64.rpm | 165 kB 00:00:00----------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total 1.5 MB/s | 221 kB 00:00:00Running transaction checkRunning transaction testTransaction test succeededRunning transaction  Installing : stunnel5-5.58-1.amzn2.0.1.x86_64 1/2  Installing : amazon-efs-utils-1.35.0-1.amzn2.noarch 2/2  Verifying : amazon-efs-utils-1.35.0-1.amzn2.noarch 1/2  Verifying : stunnel5-5.58-1.amzn2.0.1.x86_64 2/2
Installed:  amazon-efs-utils.noarch 0:1.35.0-1.amzn2
Dependency Installed:  stunnel5.x86_64 0:5.58-1.amzn2.0.1
Complete!

Bibliography

https://docs.aws.amazon.com/general/latest/gr/elasticfilesystem.htmlhttps://docs.aws.amazon.com/efs/latest/ug/installing-amazon-efs-utils.htmlhttps://docs.aws.amazon.com/efs/latest/ug/mounting-fs-mount-cmd-dns-name.html
https://www.msp360.com/resources/blog/amazon-s3-vs-ebs-vs-efs/
https://stackoverflow.com/questions/77047048/unable-to-delete-aws-efs-automatic-backup-vault