==========
Monitoring
==========

E2E Networks nodes and load-balancers are monitored using different metrics to
ascertain server health in real-time. It will help you track the operational health of
your infrastructure. Monitoring information is graphically represented on the
MyAccount portal. Additionally, you can use monitoring API to get monitoring data of
your nodes and load balancers like disk space, memory usage, processor load, disk
read/write operations, and network traffic statistics.


RealTime Memory & Storage Monitoring API
========================================

To get monitoring information regarding any node, send a GET request to the
endpoint
**https://api.e2enetworks.com/myaccount/api/v1/nodes/<$NODE_ID>/monitor/server-
health-info/?apikey={{api_key}}**


CURL
----

::

        curl --request GET
        'https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>/monitor/server-health-
        info/' \
        --header 'Authorization: Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSld........' \
        --header 'Content-Type: application/json' \
        --header 'x-api-key: {{api_key}}'


PHP_CURL
--------

::

        <?php
        $curl = curl_init();
        curl_setopt_array($curl, array(
        CURLOPT_URL =>
        "https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>/monitor/server-health
        -info/",
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_ENCODING => "",
        CURLOPT_MAXREDIRS => 10,
        CURLOPT_TIMEOUT => 0,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
        CURLOPT_CUSTOMREQUEST => "GET",
        CURLOPT_HTTPHEADER => array(
        "Authorization: Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiA........",
        "Content-Type: application/json",
        "x-api-key: {{api_key}}",
        ),
        ));
        $response = curl_exec($curl);
        curl_close($curl);
        echo $response;


PHP_HTTP_REQUEST_2
------------------

::

        <?php
        require_once 'HTTP/Request2.php';
        $request = new HTTP_Request2();
        $request->setUrl('https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>/moni
        tor/server-health-info/');
        $request->setMethod(HTTP_Request2::METHOD_GET);
        $request->setConfig(array(
        'follow_redirects' => TRUE
        ));
        $request->setHeader(array(
        'Authorization' => 'Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJj........',
        'Content-Type' => 'application/json',
        'x-api-key' => '{{api_key}}',
        ));
        try {
        $response = $request->send();
        if ($response->getStatus() == 200) {
        echo $response->getBody();
        }
        else {
        echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
        $response->getReasonPhrase();
        }
        }
        catch(HTTP_Request2_Exception $e) {
        echo 'Error: ' . $e->getMessage();
        }


PHP_PECL_HTTP
-------------

::

        <?php
        $client = new http\Client;
        $request = new http\Client\Request;
        $request->setRequestUrl('https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>
        /monitor/server-health-info/');
        $request->setRequestMethod('GET');
        $request->setOptions(array());
        $request->setHeaders(array(
        'Authorization' => 'Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJ.......',
        'Content-Type' => 'application/json',
        'x-api-key' => '{{api_key}}',
        ));
        $client->enqueue($request)->send();
        $response = $client->getResponse();
        echo $response->getBody();


NodeJS_Native
-------------

::

        var https = require('follow-redirects').https;
        var fs = require('fs');
        var options = {
        'method': 'GET',
        'hostname': 'https://api.e2enetworks.com',
        'path': '/myaccount/api/v1/nodes/<<node_id>>/monitor/server-health-info/',
        'headers': {
        'Authorization': 'Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2......',
        'Content-Type': 'application/json',
        'x-api-key': '{{api_key}}',
        },
        'maxRedirects': 20
        };
        var req = https.request(options, function (res) {
        var chunks = [];
        res.on("data", function (chunk) {
        chunks.push(chunk);
        });
        res.on("end", function (chunk) {
        var body = Buffer.concat(chunks);
        console.log(body.toString());
        });
        res.on("error", function (error) {
        console.error(error);
        });
        });
        req.end();


NodeJS Request
--------------

::

        var request = require('request');
        var options = {
        'method': 'GET','url':
        'https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>/monitor/server-health-
        info/',
        'headers': {
        'Authorization': 'Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6.........',
        'Content-Type': 'application/json',
        'x-api-key': '{{api_key}}',
        }
        };
        request(options, function (error, response) {
        if (error) throw new Error(error);
        console.log(response.body);
        });


NodeJS Unirest
--------------

::

        var unirest = require('unirest');
        var req = unirest('GET',
        'https://api.e2enetworks.com/myaccount/api/v1/nodes/<<node_id>>/monitor/server-health-
        info/')
        .headers({'Authorization': 'Bearer
        eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkI.......',
        'Content-Type': 'application/json',
        'x-api-key': '{{api_key}}',
        })
        .end(function (res) {
        if (res.error) throw new Error(res.error);
        console.log(res.raw_body);
        });


Response Body
-------------

::

        {"code":200,"data":{"host_uptime":"8 months 21 days","memory":{"labels":["Free
        Memory (GB)","Used Memory
        (GB)"],"results":["1.02","11.29"]},"disk":{"labels":["Free Disk Space (GB)","Used Disk
        Space (GB)"],"results":["5.87","9.75"]}},"errors":"{}","message":"Success"}