Storage driver options in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to set the storage driver to overlay2 when starting the Docker daemon.

Docker

dockerd --storage-driver=[1]

Drag options to blanks, or click blank then click option'

Abtrfs

Baufs

Coverlay2

Ddevicemapper

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'aufs' which is deprecated on many systems.

Using 'devicemapper' without proper configuration.

The overlay2 driver is the recommended storage driver for modern Linux kernels. The command dockerd --storage-driver=overlay2 starts the Docker daemon using this driver.

2fill in blank

medium

Complete the Docker daemon configuration file snippet to specify the storage driver as btrfs.

Docker

{
  "storage-driver": "[1]"
}

Drag options to blanks, or click blank then click option'

Abtrfs

Boverlay

Caufs

Ddevicemapper

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'overlay' instead of 'overlay2' which is the newer version.

Forgetting to restart the Docker daemon after changing the config.

Setting "storage-driver": "btrfs" in the Docker daemon JSON config file tells Docker to use the Btrfs storage driver.

3fill in blank

hard

Fix the error in the command to start Docker with devicemapper storage driver.

Docker

dockerd --storage-driver=[1]

Drag options to blanks, or click blank then click option'

Aoverlay2

Baufs

Cbtrfs

Ddevicemapper

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'devicemapper' without proper kernel support.

Typing 'device-mapper' or other incorrect spellings.

The devicemapper driver requires specific setup but can be set by dockerd --storage-driver=devicemapper. This fixes errors caused by missing or wrong driver names.

4fill in blank

hard

Fill both blanks to create a Docker daemon config snippet that sets the storage driver to overlay2 and enables experimental features.

Docker

{
  "storage-driver": "[1]",
  "experimental": [2]
}

Drag options to blanks, or click blank then click option'

Aoverlay2

Btrue

Cfalse

Daufs

Attempts:

3 left

💡 Hint

Common Mistakes

Setting experimental to false when intending to enable it.

Using an unsupported storage driver.

The config sets "storage-driver": "overlay2" and enables experimental features with "experimental": true.

5fill in blank

hard

Fill all three blanks to create a Docker daemon config snippet that sets the storage driver to devicemapper, disables live-restore, and sets the log level to info.

Docker

{
  "storage-driver": "[1]",
  "live-restore": [2],
  "log-level": "[3]"
}

Drag options to blanks, or click blank then click option'

Aoverlay2

Bfalse

Cinfo

Ddevicemapper

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing live-restore true/false values.

Using incorrect log level strings.

This config sets the storage driver to devicemapper, disables live-restore by setting it to false, and sets the log level to info.