kubernetes jenkins-plugins - JnlpProtocol3 is disabled by default, use JNLP_PROTOCOL_OPTS to alter the behavior

Multi tool use
I am trying to configure Jenkin on my kubernetes cluster following steps from here https://radu-matei.com/blog/kubernetes-jenkins-azure/
from the slave I see JNLP Disabled not sure where I need to set this variable, tried in Jenkins global environment variable setting, it didn't work.
How can I set this variable?
Here is my jenkin configuration.
I think, you should change Jenkins URL to serviceName
and use port 8080, something like this:
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