ha-api

A NodeJS API for HAProxy. Thsi can be used to expose a REST API or to control haproxy from Javascript.

Usage

var HAApi= require('ha-api'),
	haapi = new HAApi({
		socket: {
			host : 'haproxy.address',
			port : 1234
		},
		apiPort : 1111
	})

Prerequisites

HAProxy must open its configuration socket. This is done in the haproxy.cfg file using the followinf syntax:

TCP socket

 stats socket ipv4@0.0.0.0:1234 level admin

Local domain UNIX socket

stats socket /tmp/haproxy.sock level admin

Config Parameters

socket : HAProxy socket information. It can be either a TCP socket { host : 'haproxy.address', port : 1234 } or a UNIX local socket : { socket : '/tmp/haproxy.sock' }

app : optional express() instance. If provided, API methods will be added to this isntance. If not, a new express() will be created.

apiPort : TCP port to expose the REST API.

Operations

Get HAProxy Info

REST

GET /info

Javascript

haapi.info(callback);

Get Stats

REST

GET /stats

Javascript

haapi.stats(callback);

Returns a JSON formatted view of HAProxy stats

Disable and enable frontend

REST

GET /frontend/[frontend name]/disable
GET /frontend/[frontend name]/enable

Javascript

haapi.frontend('name').disable(callback);

Disable and enable a backend server

REST

GET /backend/[backend name]/server/[server name]/disable
GET /backend/[backend name]/server/[server name]/enable

Javascript

haapi.backend('name').server('name').disable(callback);
haapi.backend('name').server('name').enable(callback);