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anily86
Contributor III
Contributor III

Need help on Qlik Sense Automatic FailOver URLs and list of certificates

Dear Qlik Experts,

Environment Details:

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Central node on Windows 2019 server with QS Nov 2023 Patch 9 

URL - www.centralnode.com and IP is 1.2.3.4 

RIM node (FailOver) on Windows 2019 server with QS Nov 2023 Patch 9 

URL is - www.rimnode.com and IP is 5.6.7.8

Repository Db(not within Qlik Sense Central) / Postgredb 14.11 version is in Linux server

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Manual Failover:

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1. Currently, I am doing a manually failover by forcing Qlik services stopping in central node to take the control by FailOver node (RIM node) which is working fine.  

2. Before Fail over qmc/hub URL was - www.centralnode.com/hub 

3. After Fail Over qmc/hub is working with - (www.rimnode.com) which means fail over is working, but I don't want to communicate or force users to use (www.rimnode.com/hub) or feel the difference of environment usage hence to use the www.centralnode.com/hub  after fail over so I have contacted the network team to switch the IPs of Central to RIM node (Fail Over) so users will be using same URL (www.centralnode.com/hub).                             The moment Central Node IP is mapped to FailOver node, QMC/hub url displayed with http error with "Qlik logo + 400 Bad Request The http request header is incorrect." with url lock showing as "not secure" (it was secure before failover). 

Also before starting Fail Over I did below:

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1. Copied the Central node Qlik Client and Service Cluster Certficate to RIM node

2. White listed Central and RIM nodes in virtual proxies of both Central and RIM. 

3. Browser/URL SSL Thumbprint of Central and RIM is different as we have different certificates.

Can someone help/assist me if any other certificate/thumbprint/something else to be done to make it work?  Did I miss something ?  Please suggest 

4. Once the above theory of IP switching works, I will map 2 IP addresses to Central node so fail over will become automatic the moment central goes down.

Thanks,

Anil

 

Labels (1)
1 Reply
Mike_Dickson
Support
Support

@anily86 
It sounds like you are attempting to have a type of High Availability environment for your users. I would like to provide you the following link to the Qlik Admin Playbook that might be able to provide some guidance: IE Active Central & Passive Central. You would want to be using a DNS alias so that the end users are not using the individual server names / IP addresses.

Resiliency & HA - qs-admin-playbook

And

Plan Disaster Recovery - qs-admin-playbook

I know these are not detailed guides, but I hope this is a good starting point if you have not already viewed them.

Sr. Technical Support Engineer with Qlik Support
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