kubectl get pods -l env=dev --show-labels

See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\9 B.JPG

See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
Volume Mode:
The volume mode defines how a PersistentVolume is presented to the pods. It specifies whether the volume is exposed as a block device or a file system.
Block Mode:
- Description: Presents the volume as a block device directly to the pod. This allows for low-level access and control over the storage.
- Suitable for:
- Databases requiring direct block access (e.g., MySQL, PostgreSQL)
- Applications that need to directly manage the storage layout
- High-performance storage scenarios where low-level access is beneficial Filesystem Mode:
- Description: Presents the volume as a file system to the pod. This allows for accessing the storage through standard file system operations.
- Suitable for:
- General-purpose applications requiring file system-based storage
- Applications that store data in files and directories (e.g., web servers, application code)
- Scenarios where simplicity and ease of use are prioritized
Example:
- Block Mode: A MySQL database pod would utilize a block volume to ensure low-level control over the storage, optimize performance, and manage data files efficiently.
- Filesystem Mode: A web server pod storing website files and logs would typically use a file system volume for ease of access and management.