Failover Candidate in Qlikview Cluster

[Rohan]

Hi Everyone,

We have a 4 node Qlikview architecture, config  : 

Server A : QMS, QVS,QVWS,DSC;

Server B : QVS,QVWS,DSC(disabled),QMS(disabled);

Server C : QDS;

Server D : QDS;

We wish to have an active passive failover architecture & make Server B my failover candidate, so in case my A is down then, B can take up & cater to our end users. Any & all guidance will be appreciated if you have implemented a similar failover architecture in your environment.

Our plan was to create a copy of the qvpr on a shared folder & have Server B QMS point to that & disable it until needed. Will this work ? if yes, which all changes are to be expected in the QVPR ?

Regards,

Rohan.

QlikView 

@sunny_talwar @Sonja_Bauernfeind @Daniele_Purrone @johnw 

[Daniele_Purrone · Accepted solution]

Hi @Rohan 

The attached document explains High Availability and Disaster Recovery options when implementing
QlikView. 
There are two primary sections in this document:
1. QlikView Components
            Description: provides an overview of the main components of QlikView and gives a description of the configuration and data elements to be replicated or backed up for each.
2. QlikView High Availability and Disaster Recovery Scenarios
            Description: highlights the most common approaches to achieve high availability in a QlikView Environment.

I hope this helps, cheers!

[Rohan]

Hi @Daniele_Purrone,

Appreciate your quick response.

I read through the doc, We are trying to implement an architecture similar to Two Servers, Active / Active QVS and QVWS in the doc you have shared, is there any detailed doc on how to actually implement this architecture ? The reason we are asking this is because as far as I have researched, this kind of activity will require some manual changes to the QVPR before restoring. What these changes would be is my primary concern.

Regards,

Rohan.

[Daniele_Purrone]

Hi @Rohan ,

If hostnames change in the process, you might need to change those mentioned in the QVPR, as mentioned here:
https://help.qlik.com/en-US/qlikview/May2023/Subsystems/Server/Content/QV_Server/QlikView-Server/QVS... 

Edit all .xml files in the following folders, replacing all references to the current machine name with the target machine name:
%ProgramData%\QlikTech\ManagementService
%ProgramData%\QlikTech\ManagementService\QVPR

[Rohan]

Hi @Daniele_Purrone ,

Yes, We know about this part. Is the hostname reference the only change required in the QVPR ?

Regards,

Rohan.

[Daniele_Purrone]

Hi @Rohan ,

I cannot think of anything else that would need to be changed.
I would suggest that you test the shutting down production on a scheduled maintenance plan to test this.