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kausar007
New Contributor II

Is the central node in multi node deployment a single point of failure?

Hi Guys,

I am planning a deployment of highly available Qlik Sense server. Reading through documentation I found out that central node is required for all kind of deployments and also "Rim nodes synchronize data through the central node.". How is not the central node then single point of failure? What happens if the central node goes down?

Kind Regards,

Kausar

1 Solution

Accepted Solutions
jaisoni_trp
Contributor II

Re: Is the central node in multi node deployment a single point of failure?

6 Replies
jaisoni_trp
Contributor II

Re: Is the central node in multi node deployment a single point of failure?

You can make another node as fail over candidate and swap Central node in Share Persistence. I would suggest to move to Share architecture instead of Synchronized.

kausar007
New Contributor II

Re: Is the central node in multi node deployment a single point of failure?

Hi Jai,

Thanks for the suggestions. Do you have any tutorial/guide links for how to install Qlik sense components as shared architecture with high availability?

Regards,

Kausar

jaisoni_trp
Contributor II

Re: Is the central node in multi node deployment a single point of failure?

Qlik is doing a good job documenting everything on help site. I would start with that.

http://help.qlik.com/en-US/sense/September2017/Subsystems/PlanningQlikSenseDeployments/Content/Deplo...

kausar007
New Contributor II

Re: Is the central node in multi node deployment a single point of failure?

Hi Jai,

Yes I was reading through this documentation that means I am on the right track and I will be using the shared persistence option and not the synchronized. As an example let's say I am creating something like this:

dr_PortsSepProxyEngineHA_613x535.png

I have a central node and two proxy/engine nodes But still my question is what happens if the central node goes down?

Thanks,

Kausar

jaisoni_trp
Contributor II

Re: Is the central node in multi node deployment a single point of failure?

kausar007
New Contributor II

Re: Is the central node in multi node deployment a single point of failure?

Hi Jai,

This is great. Thank you for the link. I was looking at the version 3.2 documentation as I had 3.2 installed. Looks like failover was introduced later. I will be looking to upgrade now.


Regards,

Kausar

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