Restart policies in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to run a Docker container that always restarts.

Docker

docker run --restart=[1] nginx

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

Aunless-stopped

Balways

Con-failure

Dno

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'no' means the container won't restart automatically.

The --restart=always policy makes Docker restart the container whenever it stops.

2fill in blank

medium

Complete the command to restart a container only if it exits with an error.

Docker

docker run --restart=[1] myapp

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

Aon-failure

Balways

Cno

Dunless-stopped

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'always' restarts even on success, which is not desired here.

The on-failure policy restarts the container only if it exits with a non-zero status (an error).

3fill in blank

hard

Fix the error in the command to restart a container unless it is stopped manually.

Docker

docker run --restart=[1] myservice

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

Aunless-stopped

Bno

Calways

Don-failure

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'always' ignores manual stops and restarts anyway.

The unless-stopped policy restarts the container unless it was stopped by the user.

4fill in blank

hard

Fill both blanks to create a restart policy that restarts on failure but only up to 3 times.

Docker

docker run --restart=[1]:[2] app

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

Aon-failure

Balways

C3

Dunless-stopped

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'always' with a number is invalid syntax.

The on-failure:3 policy restarts the container up to 3 times if it fails.

5fill in blank

hard

Fill all three blanks to create a Docker run command that restarts always, names the container 'web', and runs in detached mode.

Docker

docker run --restart=[1] --name=[2] -[3] nginx

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

Aalways

Bweb

Cd

Don-failure

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-f' instead of '-d' for detached mode.

This command restarts the container always, names it 'web', and runs it in detached mode with '-d'.