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Reputation: 4302

Aws EC2 EBS setup gives error ls: cannot open directory /mnt/my-data/: permission denied

I am learning amazon EC2 using the EC2 user guide document. My aim is to attach an EBS volume to a running EC2 instance. I have already done this successfully. However I now want to mount it after connecting through the SSH from my linux machine. I have successfully done the steps provided in the manual:

sudo mkdir /mnt/my-data 
sudo mount /dev/sdf /mnt/my-data

(however in my case the sudo mount /dev/sdf1 /mnt/my-data worked instead)

But I can't view the contents using ls /mnt/my-data (which is also provided as step in the user guide).

Do you know why this is happening?

Upvotes: 3

Views: 2807

Answers (2)

Suman
Suman

Reputation: 9561

When you create /mnt/my-data using the above two commands, the directory ends up being owned by root. In order to change this:

sudo chown -R ec2-user:ec2-user /mnt/my-data

(Assuming ec2-user is your current user.)

Now it should work and you should be able to use that directory as your regular user.

Upvotes: 13

some ideas
some ideas

Reputation: 74

Or, here's another syntax example:

get filesystem info:

ubuntu@ip-10-29-192-104:/mnt$ df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 883M 6.7G 12% / udev 819M 12K 819M 1% /dev tmpfs 331M 172K 331M 1% /run none 5.0M 0 5.0M 0% /run/lock none 827M 0 827M 0% /run/shm /dev/xvdb 147G 188M 140G 1% /mnt

In this case, the new EBS is mounted on /mnt This is an Ubuntu image, so the username is ubuntu.

sudo chown -R ubuntu:ubuntu /mnt/

Now the /mnt is owned by "ubuntu" not "root"

Upvotes: 0

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