CODEWITHSUNDEEP
kuberneteskubernetes-nodeport
Tomasz
Tomasz

Reputation: 2061

NodePort traffic balance works not as expected

I have a cluster with 2 nodes:

I have created deployment, which creates 2 pods within the cluster. In my example it looks like:

Then I created a NodePort service, which should route the traffic in some specific way. I was hoping for

But unfortunately it does not work this way. It looks like when I request a resource, and I keep requesting (refreshing a page), Pod1 (in the example) is handling the requests. Then, when I wait a bit (i.e. 1 minute) without any requests, and after this time I request the resource Pod2 starts to answer (and again, when I keep refreshing, Pod2 is still handling it).

Is it correct behavior? How can I make NodePort to route trafic in real 50/50 in this case?

Thanks

Upvotes: 0

Views: 345

Answers (1)

Tomasz
Tomasz

Reputation: 2061

Ok, the answer was trivial, and not related to kubernetes configuration.

Since I was just using browser to access HTML page, some default HTTP headers was sent by browser. The one, which probably suggested to kubernetes to handle the request on same pod was Connection: keep-alive.

Calling curl or using Postman and deleting the headers works as expected.

Upvotes: 2

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