Can I mount two different folders in one EC2 instance?

Question

I have already mounted AWS EFS one folder in EC2 instance. I want to mount another one folder in same AWS EFS. Is this possible?

Answer 1

You can use a Symbolic Link.

    mkdir -p /mnt/efs
    echo "${FileSystem}.efs.${AWS::Region}.amazonaws.com:/   /mnt/efs   nfs4    defaults" >> /etc/fstab
    mount -a
    ln -s /var/www/html/media /mnt/efs/media
    ln -s /var/www/html/var /mnt/efs/var

First your create a root directory for the mount point ( /mnt/efs ). Them you mount the FileSystem in this directory ( /mnt/efs ). Now for example, if you want to map /var/www/html/media create a symbolic link pointing to the mounted point ( ln -s /var/www/html/media /mnt/efs/media ). This will create a folder in /mnt/efs/media .

Answer 2

It is possible to mount two different directories under file mount system. Initially in order to access your efs just mount a EFS root under your instance using the command

sudo mount -t efs fs-id:/ /home/efs

Then create subdirectories under the /home/efs folder for example let's have two subdirectories under /home/efs namely images and data.

Now you can mount two directories in your which is likely to be under /var/www/html/images and /var/www/html/data by adding the below in fstab file which will be under /etc/

fs-id:/images /var/www/html/images efs defaults,_netdev 0 0

fs-id:/data /var/www/html/data efs defaults,_netdev 0 0

And reboot your instance. Whatever changes in /var/www/html/data will gets reflected in fs-id:/data folder also the same applies for image folder also hope this helps. Initially you need to setup efs-utils in your instance.

Answer 3

I created symbolic link and it reflects in both sym link and main folder but does not reflect in another mounted server