spm-agent-nodejs

SPM performance monitoring by Sematext - this is the Node.js monitoring agent for SPM.

Following information is collected and transmitted to SPM (Cloud or On-Premises version):

• OS Metrics (CPU / Mem)

• Process Memory

• EventLoop stats

• Garbage Collector stats

• HTTP server stats (requests, error rate, response times etc.) Working for all HTTP servers that use NodeJS http module including "connect" based frameworks like Express.js, Sails.js and others like Hapi.js, ...

  The module is able to run in cluster mode (master/worker).

Status

This package is part of the release tests - please check our blog for updates or contact us npmjs@sematext.com.

Supported Node-Versions: Node >= 0.10, IO.js >= 1.2

Installation

    npm install spm-agent-nodejs

Get a free account and create a Node.js API token at www.sematext.com

Configuration

We use https://www.npmjs.com/package/rc for configuration. This means config parameters can be passed via several config locations commandline args or ENV variables. We recommend to use a file in current directory in ini or JSON format called

    ./.spmagentrc
    -----------------
    {
        "tokens": {
            "spm": "YOUR_APP_TOKEN"
        },
        // needs to be changed if you run local SPM Server  e.g.:
        spmSenderBulkInsertUrl: 'https://spm-receiver.my-domain.com:443/receiver/v1/_bulk',
        "logger": {
            "dir": "./spmlogs",
            "console": "false",
            "maxfiles": "3",
            "maxsize":  "1048576",
            "filename": "spm"
        }
    }

The alternative INI format:

[tokens]
  spm = TOUR_APP_TOKEN
[logger]
  console = true

The only required setting is the SPM Application Token, this could be set via config file ".spmagentrc" or environment variable:

export spmagent_tokens__spm="YOUR-SPM-APP-TOKEN"

Please note the use of double "_" for nested properties

Usage

Add this line at the begin of your source code / main script / app.js

    var spmAgent = require ('spm-agent-nodejs')

You need to create one agent instance in each worker to collect metrics of master and worker processes. Operating system metrics are collected in the master process only.

Start existing applications in monitor mode without touching source

1. Copy the helper script to the directory of your app

   cp ./node_modules/spm-agent-nodejs/bin/spmmonitor.js .

2. Start your app using the monitor script

   node ./spmmonitor.js app.js

Please note you can pass your individual commandline arguments for your script as usual. SPM Monitor removes its own arguments from the list.

Other SPM related packages

Please check out spm-metrics-js to monitor any custom metric in your application.

LICENCE

  Copyright (c) Sematext Group, Inc.
  All Rights Reserved

  SPM for NodeJS is free-to-use, proprietary software.
  THIS IS PROPRIETARY SOURCE CODE OF Sematext Group, Inc. (Sematext)
  This source code may not be copied, reverse engineered, or altered for any purpose.
  This source code is to be used exclusively by users and customers of Sematext.
  Please see the full license (found in LICENSE in this distribution) for details on its license and the licenses of its dependencies.