# ExtraHop

## Description

Advanced Monitoring using ExtraHop is a feature that can be enabled in ITCare at the Global service level. This gives access to advanced network dashboards on your resources.

{% embed url="<https://docs.extrahop.com/8.5/metrics-reference/>" %}

## **Activity - Generic metrics** <a href="#extrahop-or-advancedmonitoring-activity-genericmetrics" id="extrahop-or-advancedmonitoring-activity-genericmetrics"></a>

The following graphs are available in the Activity dashboard:

* Bandwidth
* Total traffic
* HTTP 20\* Status Code
* HTTP requests by Pool Member
* Top URI requested

### **Bandwidth**

<figure><picture><source srcset="/files/YAeb9Ei00ZcwyUkj9jjV" media="(prefers-color-scheme: dark)"><img src="/files/YAeb9Ei00ZcwyUkj9jjV" alt=""></picture><figcaption><p>Extrahop bandwidth</p></figcaption></figure>

This graph shows the evolution of the bandwidth.

* Bits In : average bandwidth from outside to the public IP.
* Bits Out : average bandwidth from the public IP to outside.
* TCP established max : max TCP session established.

{% hint style="success" %}
**Analysis :** Zero bandwidth or peak of bandwith may indicate an issue.
{% endhint %}

### **Total traffic**

<figure><img src="/files/nwsBf7N2dtPzdc2HpGo6" alt=""><figcaption></figcaption></figure>

* Bytes In : total from outside to the public IP.
* Bytes Out : total from the public IP to outside

### **HTTP 20\* Status Code**

<figure><img src="/files/B5vRQQ0BtX96pNS926nq" alt=""><figcaption></figcaption></figure>

This graph shows the total amount of requests with 200+ status code. Requests with 400+ or 500+ status code are not shown here.

### **HTTP requests by Pool Member**

<figure><img src="/files/7jjIq1bAWj4uAe843rhG" alt=""><figcaption></figcaption></figure>

This graph shows the total of HTTP request received by the Pool Member.

{% hint style="success" %}
**Analysis** : Indication that the load balancing is well done and if some of the pool members receive zero or too many requests.
{% endhint %}

### **Top URI requested**

Show the Total of by URI requested to the Pool Member.

{% hint style="success" %}
**Analysis** : Identify URI that are requested too many times. It helps to improve the code.
{% endhint %}

***

## **Metrics on user experience** <a href="#extrahop-or-advancedmonitoring-performance-metricsonuserexperience" id="extrahop-or-advancedmonitoring-performance-metricsonuserexperience"></a>

### **Clients TCP Round Trip Time**

<figure><img src="/files/01qVk9Zdq08twLi5pdM3" alt=""><figcaption></figcaption></figure>

This graph shows the network latency between the client and the public IP.

Definition of Round Trip Time = network latency / Processing time = server processing time / Slowest URI

### **Processing time by Pool Member**

<figure><img src="/files/W1SV7i36tsjaqWiuKzpV" alt=""><figcaption></figcaption></figure>

This graph shows the time the Pool Members will answer to a request.

<figure><img src="/files/CDfTD1fEUmK3eizg788G" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
**Analysis** : Can indicate performance issues on the server.
{% endhint %}

***

## **HTTP errors** <a href="#extrahop-or-advancedmonitoring-errors-httperrors" id="extrahop-or-advancedmonitoring-errors-httperrors"></a>

### **Errors - HTTP errors by status code**

This graph shows the top 400+ errors.

Top 500/404/400 errors with the following details :

* Client IP
* Pool Member IP
* Error
* URI

<figure><img src="/files/W8YHw6JZWmS3tsq0CB5n" alt=""><figcaption></figcaption></figure>

***

## **Security - Metrics on SSL transactions** <a href="#extrahop-or-advancedmonitoring-security-metricsonssltransactions" id="extrahop-or-advancedmonitoring-security-metricsonssltransactions"></a>

This is a Security Dashboard. Best practice evolves quickly.

<figure><img src="/files/0A4dxps7FZae6fsP7Sis" alt=""><figcaption></figcaption></figure>

***

## **Database - Metrics on the database** <a href="#extrahop-or-advancedmonitoring-database-metricsonthedatabase" id="extrahop-or-advancedmonitoring-database-metricsonthedatabase"></a>

<figure><img src="/files/qLyd7SVywTTBT1lfmUl8" alt=""><figcaption></figcaption></figure>

### **Database Activity**

Total of response sent from the server to the Pool Members VS the number of error.

{% hint style="success" %}
**Analysis**: a change of behavior can indicate an issue. Pay attention to the scale between the errors and the responses.
{% endhint %}

### **Database Performance**

Server processing time (like the HTTP processing time). It will show how long it will take to the database servers to answer to the Pool Members.

{% hint style="success" %}
**Analysis**: Can indicate a performance issue on the database or a bad request efficiency done by the Pool Members.
{% endhint %}


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