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@jwerre/healthcheck

v1.0.6

Published

Monitor the health of your web applications, web servers, and other resources

Downloads

170

Readme

Healtcheck

Monitor the health of your web applications, web servers, and other resources

Why?

I use it like this in my Dockerfile

HEALTHCHECK --interval=30s CMD ./node_modules/.bin/healthcheck localhost/liveness:8080

Or, perhaps you need a readiness check with a JSON search.

healthcheck localhost/readiness:8080 --type json --search ready=true;

Install

npm install @jwerre/healthcheck

Usage

const healthcheck = require('healtcheck');

const res = async healthcheck({
	url: 'https://google.com',
	method: 'GET',
	type: 'html',
	search: /^<!doctype html*/,
	timeout: 2000,
})

Options

| Option | Type | Description | |-- |-- |-- | | url | String | Request url (required). | | method | String | Request port (default: 'GET'). | | timeout | Number | Request timeout in milliseconds (default: 800). | | type | String | Type of healthcheck either status, header, html or json (default: status). | | search | * | Search string to find in the response. If type is 'status' provide the status code you expect. If type is 'html' use a string or Regular Expression. If type is 'header' or 'json' provide a key and value as an array [key, value]. For nested values use dot syntax for the key e.g.: ['author.name.first', 'brian' |

CLI

$ healthcheck --help

Monitor the health of your web applications, web servers, and other resources

Usage: 
healthcheck https://www.example.com
healthcheck --type html --search "^<!doctype html.*" https://www.example.com
healthcheck --method HEAD --type header --search "content-type=text/html; charset=UTF-8" https://www.example.com
healthcheck --type json --search key=value http://echo.jsontest.com/key/value
healthcheck --type json --search author.name.first=brian https://www.example.com


Options:
-m, --method		Request port (default: 'GET')
-t, --timeout		Request timeout in milliseconds (default: 800)
-T, --type			Type of healthcheck either status, headers, html or json (default: status)
-s, --search		Search string to find in the response. If type is 'status' 
					provide the status code you expect. If type is 'html' use a 
					string or Regular Expression. If type is 'header' or 'json' 
					provide a key and value as an array [key, value]. For nested 
					values use dot syntax for the key e.g.: ['author.name.first', 'brian']
-v, --verbose		Verbose output.
-h, --help			Show help.