Cluster active gate Architecture sizing

[a_chiaravalle]

Hello Team

I wanted to ask what are the best practices and the information do I need to correctly sizing our cluster active gate architecture (dynatrace-managed) , considering that we must monitor some web Applications from the cloud (saas) with Agentless RUM?

Kind Regards

Antonello

[radek_jasinski]

Hi,

You can find many important informations here:

https://www.dynatrace.com/support/help/setup-and-configuration/dynatrace-activegate/installation/win...

Radek

[a_chiaravalle]

Ok thanks for the information, in addition I would like to know how many cluster active gate servers should I have depending on how many users sessions and user actions I will have on all these applications during the peak hours.
I there any suggestion on this ?

[radek_jasinski]

Rather, a greater limitation is the number of agents. I can tell you from experience that I have 5 AGs running on one of my customer the largest monitored application environments (around 3700 OA). We have traffic set to catch 35000 user actions/minute. Everything works good.

Radek

[a_chiaravalle]

Ok but in my scenario we are using "cluster active gate" for receiving metrics not from oneagent but from Dynatrace Agentless RUM javascript (manual injection), these because we have Saas applications for which is not possible to install oneagent on the application servers.

So that the monitoring metrics arrive to Dynatrace managed directly from the browsers of the users who is navigating the applications, and depending from the number of concurrently users I think I should dimension the number of server.

I'm looking for a dimension criteria of the number of "cluster active gate ".

Thanks 

Antonello

[Mohamed_Hamdy]

Hi @a_chiaravalle ,

I think you can use two cluster ActiveGates for high availability

[a_chiaravalle]

Yes sure for high availability but if I want to dimension the cluster considering the Number of users or user actions is there any dimension criteria to consider?

[radek_jasinski · Accepted solution]

In this thread you will find all the information:

https://community.dynatrace.com/t5/Open-Q-A/Sizing-guidelines-for-ActiveGate/td-p/94152

[Mohamed_Hamdy]

I don't think there is official documentation for this part, except for the private synthetic and zRemote module, however, you can check the following link:

https://www.dynatrace.com/support/help/shortlink/activegate-requirements-linux#hardware-requirements

as for my recommendation, you can use 2 vCPU, 4GB RAM, 15GB storage per server

and if you have resources you can use 4 vCPU, 8GB RAM, 20GB storage per server, I don't think you will need more than that.

[a_chiaravalle]

Hi 

Ok thank you for your tips