Elevating an existing Qlik Sense rim node to a Failover Candidate

[Benoit_C]

For information about Qlik Sense failover candidates, see Qlik Sense Failover Central node: Requirements and Considerations.

Out of the box, you need to toggle the option to enable a rim node as a failover node during first time setup. In this article, we will outline how to accomplish elevating an existing node to being a failover candidate primarily using the QRS APIs.

Steps:

1. Perform a GET /qrs/ServerNodeConfiguration/full API call
   
   
2. Copy the JSON response
   
   
3. Edit the JSON to include only the node that you want to elevate
           Remember to remove the []'s which bracket the JSON response
   
   
4. Change the failoverCandidate to be true and slightly modify the modifiedDate
   
   
5. Perform a PUT /qrs/ServerNodeConfiguration/{GUID_of_note_to_elevate} with the edited JSON in the body
   
   
6. Export full trusted root from existing Central candidate
   
   
7. Stop services on the newly elevated rim
   
   
8. Deleted the existing trusted root certificate on the newly elevated rim
   
   
9. Import the copy of the certificate that was previously exported from an existing Central candidate
   
   
10. Start all services on the rim

Environment

Qlik Sense Enterprise on Windows 

Related Content 

https://community.qlik.com/t5/Official-Support-Articles/Removing-a-Rim-Node-not-to-be-a-Failover-can... 

[TusharDev_Qlik]

@Benoit_C 

we are trying to implement same steps to convert one of our existing RIM nodes to be a failover candidate through postman but getting below error.

403 No client certificate supplied.

The request was a legal request, but the server is refusing to respond to it. Unlike a 401 Unauthorized response, authenticating will make no difference.

We have tried importing QlikClient certificate to our local system where postman is installed.

but error persists. Kindly advise.

[Sonja_Bauernfeind]

Hello @TusharDev_Qlik 

Please post about your query in the Qlik Sense Management and Deployment forum. When doing so, include:

• Version of Qlik Sense and current setup
• Steps you have attempted and what you are looking to achieve
• the error you are seeing and when
• error log snippets if you can find them in the log files (verify not to submit sensitive information)

All the best,
Sonja 

[anily86]

Hi @Sonja_Bauernfeind,

I have done failover setup and tested by failing the central node manually to take the control of FailOver which is working fine.

But one last task I am trying to achieve here is URLs.

For example: 

Central node URL is - www.centralnode.com 

RIM node (FailOver) URL is - www.rimnode.com

In My Scenario -

Before Fail over users will be using -  www.centralnode.com/hub

Now I am mapping the IPs of Central to RIM node (Fail Over) so users will be using same URL www.centralnode.com/hub without changing the URL.  The moment I switch the IPs QMC is going down.

Though I have copied the Central Certficate to RIM node still it did not work.

Any suggestion where I am missing and what I am missing.  

Any link or document for Automatic Failover to work ?

Your help is much appreciated and thanks in advance.

Thanks,

Anil

[Sonja_Bauernfeind]

Hello @anily86 

I can see that you have already posted this question in the correct forum and have received appropriate advise (Fail Over Node is not working ). The forums are the best place for customization and configuration questions and I am glad you were able to get help.

All the best,
Sonja 

[anily86]

Hi @Sonja_Bauernfeind,
After implementing I am frequently getting below error when I enable RIM node as Fail Over and starting Central services as Non Central.

Users are using the below Main URL :
----------------------------------------------
Urls : Qlik.systems.us.hdp/hub

Node URLs:
------------------------------------------
Central URL : QlikCentral.systems.us.hdp
RIM/FailOver URL : QlikFailOver.systems.us.hdp

Below error is not occurring when I am running either Central or Fail Over with the above Main URL.   
But below error is occurring when I am running both Central  and Fail Over as RIM and using the Main URL. So I have checked individual URLs of central/Failover but no issue with it but only issue is with Main URL
Can you please suggest what can be done here.  

[Sonja_Bauernfeind]

Hello @anily86 

As with your previous request, I recommend posting your requirement in the Qlik Sense Management and Deployment forum, where our active product experts and your knowledgeable Qlik peers are better able to assist you.

All the best, 
Sonja