Loadtester
This is a clustered javascript load-testing framework. You can read more about it here
Installation
sudo npm install -g
Usage
Get help with loadtest --help
Test format
Copy example-test.js to your own file and edit. The basic format is layed out here. Basically, it's a test (with a passed client) and some testing options.
It runs in 4 modes: Standalone, AWS Mother, Manual Child, and Manual Mother.
Standalone
Run it with this command: loadtest mytest.js
You can view the results at http://localhost:3000
AWS Mother
This will spin-up AWS children to run the test. You can view the results at http://localhost:3000
Put your AWS credentials in ~/.aws, like this:
{
"key":"BADWOLFBADWOLFBADWOLFBADWOLF",
"secret":"BADWOLFBADWOLFBADWOLFBADWOLFBADWOLFBADWOLF",
"endpoint": "us-west-2"
}Obviously, replace the Doctor Who reference with your AWS credentials, and set endpoint to your favorite zone (us-west-2: Portland, represent!) Make a keypair called deploy and create a security-group called loadtest that opens ports 22 (ssh) and 3000 (default test port.)
Run it with loadtest --instances=5 mytest.js
You can manually specify your credentials/zone on command line:
loadtest --instances=5 mytest.js --key=BADWOLFBADWOLFBADWOLFBADWOLF --secret=BADWOLFBADWOLFBADWOLFBADWOLFBADWOLFBADWOLF --endpoint=us-west-2
The child setup script (child-script.sh) is tailored for an Ubuntu machine. The basic idea is to get the tools needed to download & run loadtester onto the machine from a pristine state. Feel free to modify it.
Manual Child
If you have a mother setup somewhere else, you can just run loadtester without any test, and it will enter "child" mode. You will need to add the host/port to --child option of a mother, manually.
Manual Mother
If you have children running somewhere, already (using AWS Mother or Manual Child mode, above) connect to them and send a test liek this:
loadtest mytest.js --child=host1:3000 --child=host2:6000 --child=host3:9000
Library Usage
You can also use it as a library, by running this in your project dir: npm --save install "git://github.com/konsumer/loadtester.git"
And now, you can do this:
var loadtester = require('loadtester')(options);options mirrors the CLI options:
child host & port of children to use to test [array of hosts&ports]
port port to run on. [eg: 3000]
host an externally accessable hostname for this instance. [your IP]
update Update frequency (in seconds) for polling children [eg: 2]
comment Comment for log/HTML output
log create a local HTML report log [boolean]
instances The number of AWS instances to spin-up and send tests to [eg: 0]
authkey Your AWS instance keypair to use [eg: "deploy"]
group The AWS security group that has port open [eg: "loadtest"]
machine Your AWS AMI that will run this script [eg: "ami-bf1d8a8f"]
key Your AWS auth key [your AWS key]
secret Your AWS secret [your AWS secret]
endpoint Your AWS endpoint zone [eg: "us-west-2"]
timeout Timeout (in seconds) for spinning up AWS machines [eg: 120]
script The filename of the client startup script [eg: "./child-script.sh"]
It has these functions that all use the initial options you gave it:
/**
* Check a cluster of machines
* @param {Array} checkHosts Array of hosts to check
* @param {Function} callback Called when done, params: (runningHosts)
* @param {Boolean} runUntilTrue Keep polling until all hosts up?
*/
function checkCluster(checkHosts, callback, runUntilTrue)
/**
* Spin up a test-cluster
* @param {Function} callback Called when done, params: (cluster)
*/
function startCluster(callback)
/**
* Spinup AWS instances, based on options
*/
function aws_spinup()
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