Kubernetes - Day - 03 - File Permissions, Bind Mount

File Permission

- chmod 600 <file_name>
- chmod -R 6-- <folder_name>
- R --> Recurrsive

What is UMASK ?

• This is for default permission.
• just type "umask".
• Reply 0002 ( what it means ? )
• Don't take the first 0. It will be for directory.
• It will give 666 (rw- rw- rw-) --> 666 - 002 --> 664.
• The result is ( rw- rw- r-- )

Bind Mount

mount --bind <src_folder> <dest_folder>

• A folder is like HOST.
• B folder is like Container.
• This is literally called as Volume.
• Bind Mount is nothing buta VOLUME.

Commands

• docker run -v "./data":"/home/data" ubuntu bash

Architecture

• Image is RO.
• No in-place updation for image , only new image can be created.
• Each image will have different layers.

Notes :

• Container is nothing but spinning of an image using Docker.