CODEWITHSUNDEEP
kubernetes
Riley Lark
Riley Lark

Reputation: 20890

In a kubernetes Service, are the internal cluster IPs static across updates?

My gateway service does dns resolution once and then caches the IP address. For example, if I have a kubernetes Service called service-a, and the gateway routes to http://service-a/, dns resolution works perfectly. But if later the IP address for service-a changes, my gateway service would not notice, and keep sending traffic to the original IP address.

So: will the internal cluster IP of services stay constant, even if I change the service by changing its selectors, or adding an external load balancer, etc?

Upvotes: 1

Views: 302

Answers (1)

Alex Robinson
Alex Robinson

Reputation: 13387

Yes, the internal cluster IP of a service will stay the same unless you delete the service or manually change its cluster IP.

Upvotes: 2

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