Docker logs for troubleshooting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to view logs of a Docker container named webapp.

Docker

docker logs [1]

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

Arun

Bstart

Cwebapp

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using commands like start or stop instead of the container name.

Forgetting to specify any container name.

The docker logs command followed by the container name webapp shows the logs of that container.

2fill in blank

medium

Complete the command to follow the live logs of a container named db.

Docker

docker logs [1] db

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

A-f

B--tail

C--help

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using --tail which only shows last lines but does not follow.

Using run which is not a valid option here.

The -f option means 'follow' and shows live logs as they come.

3fill in blank

hard

Fix the error in the command to show only the last 50 lines of logs for container api.

Docker

docker logs --tail=[1] api

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

A100

B50

C0

Dall

Attempts:

3 left

💡 Hint

Common Mistakes

Using 100 which shows more lines than needed.

Using 'all' which is not a valid number.

The --tail=50 option shows the last 50 lines of logs.

4fill in blank

hard

Fill both blanks to show the last 20 lines and follow live logs of container cache.

Docker

docker logs [1] [2] cache

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

A-f

B--tail=20

C--follow

D--since=1h

Attempts:

3 left

💡 Hint

Common Mistakes

Using --since=1h which filters by time, not lines.

Mixing order of options incorrectly.

Use --tail=20 to show last 20 lines and -f to follow live logs.

5fill in blank

hard

Fill all three blanks to show logs since 10 minutes ago, follow live logs, and limit output to last 100 lines for container worker.

Docker

docker logs [1] [2] [3] worker

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

A--since=10m

B-f

C--tail=100

D--timestamps

Attempts:

3 left

💡 Hint

Common Mistakes

Using --timestamps which adds timestamps but does not filter or follow.

Mixing up the order of options.

--since=10m shows logs from last 10 minutes, -f follows live logs, and --tail=100 limits output to last 100 lines.