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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
@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.