Wildcard and regex server names in Nginx - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a server block that listens to all subdomains of example.com.

Nginx

server {
    server_name [1];
    listen 80;
}

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

A*.example.com

Bexample.*

Cexample.com

Dwww.example.com

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wildcard at the end like example.* does not work.

Using the exact domain name does not match subdomains.

The wildcard *.example.com matches all subdomains of example.com, like app.example.com or blog.example.com.

2fill in blank

medium

Complete the code to define a server block that matches any domain ending with .test.

Nginx

server {
    server_name ~[1];
    listen 80;
}

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

A\\.test

B^test\\.

Ctest$

D\\.test$

Attempts:

3 left

💡 Hint

Common Mistakes

Not escaping the dot causes it to match any character.

Placing the caret (^) at the start matches beginning, not end.

The regex \.test$ matches any domain ending with .test. The backslash escapes the dot, and $ means end of string.

3fill in blank

hard

Fix the error in the regex server_name to match domains starting with 'app' followed by any characters.

Nginx

server {
    server_name ~[1];
    listen 80;
}

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

Aapp.*$

B^app.*$

C^app$

Dapp^.*$

Attempts:

3 left

💡 Hint

Common Mistakes

Missing the caret causes the regex to match 'app' anywhere, not just at start.

Placing caret in the middle is invalid.

The regex ^app.*$ matches any domain starting with 'app' followed by any characters. The caret ^ marks the start, and .* means any characters.

4fill in blank

hard

Fill both blanks to create a server block matching domains starting with 'dev' or 'test' followed by '.example.com'.

Nginx

server {
    server_name ~^([1]|[2])\.example\.com$;
    listen 80;
}

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

Adev

Bprod

Ctest

Dstage

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong domain prefixes like 'prod' or 'stage'.

Not escaping dots causes wrong matches.

The regex ^(dev|test)\.example\.com$ matches domains starting with 'dev' or 'test' followed by '.example.com'.

5fill in blank

hard

Fill all three blanks to create a server block matching any subdomain of 'example.com' except 'www'.

Nginx

server {
    server_name ~^(?![1])[2]\.example\.[3]$;
    listen 80;
}

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

Awww

B[a-z0-9-]+

Ccom

Dnet

Attempts:

3 left

💡 Hint

Common Mistakes

Not using negative lookahead causes 'www' to match.

Using wrong top-level domain like 'net' instead of 'com'.

The regex uses a negative lookahead (?!www) to exclude 'www', then matches any subdomain with [a-z0-9-]+, and ends with '.example.com'.