Simple stress test

This image is meant for a simple HTTP stress test, built in PHP, useful for autoscaling tests.

IMPORTANT: This image is not production ready

Running the container

Use this command to run the container:

docker run -p 8000:8000 leonardolemos/http-stress

The service will be accessible in localhost:8000

Get general information from server

Reaching the port 8000 you can see general information about the server, this is useful for print instance IPs behind a load balancer

output:

Array
(
    [DOCUMENT_ROOT] => /var/www
    [REMOTE_ADDR] => 172.17.0.1
    [REMOTE_PORT] => 57392
    [SERVER_SOFTWARE] => PHP 8.0.3 Development Server
    [SERVER_PROTOCOL] => HTTP/1.1
    [SERVER_NAME] => 0.0.0.0
    [SERVER_PORT] => 8000
    [REQUEST_URI] => /
    [REQUEST_METHOD] => GET
    [SCRIPT_NAME] => /index.php
    [SCRIPT_FILENAME] => /var/www/index.php
    [PHP_SELF] => /index.php
    [HTTP_HOST] => localhost:8000
    [HTTP_USER_AGENT] => Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0
    [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
    [HTTP_ACCEPT_LANGUAGE] => en-US,en;q=0.5
    [HTTP_ACCEPT_ENCODING] => gzip, deflate
    [HTTP_CONNECTION] => keep-alive
    [HTTP_COOKIE] => _ga=GA1.1.1522055687.1614871793; __hstc=181257784.5151beece74cd673db46501d810a1689.1614871793698.1614871793698.1614871793698.1; hubspotutk=5151beece74cd673db46501d810a1689; rdtrk=%7B%22id%22%3A%225958a742-c285-4b77-a149-6c5d95cf8341%22%7D; _fbp=fb.0.1614871796720.1079807450
    [HTTP_UPGRADE_INSECURE_REQUESTS] => 1
    [REQUEST_TIME_FLOAT] => 1619041384.6155
    [REQUEST_TIME] => 1619041384
    [argv] => Array
        (
        )

    [argc] => 0
)

Stressing CPU

You can reach /cpu.php?seconds=10

This will stress a single core of the system, the param seconds is the amount of time in seconds that this CPU will be stressed, the default value is "1"

Stressing Memory

You can reach /memory.php?megas=2048&seconds=10

This will get an amount of memory for a few seconds, the param megas is the amount of memory(500MB by default), the param seconds is the time in seconds before the memory be released, 1 second by default.

Important: if you are testing autoscaling by memory, the PHP builtin server handles 1 request per time and the request for memory endpoint only finishes when time is over, this will get your instance unhealthy by the load balancer cheks

PHP info

Acess /info.php to see phpinfo