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How to set static IP for loadbalancer in Kubernetes?

Posted on November 27, 2018

High Availability

Deployment

Configuration Management

Load Balancing

Kubernetes

By PeterBocan

Imagine a following situation: I have a Kubernetes cluster and I want to have a statically assigned IP to LoadBalancers within those clusters. How or where I can obtain those static IPs?

Whenever I tear down Kubernetes Pods, IPs are assigned dynamically, which is fine, but if I want to assign the Kubernetes LoadBalancer a static IP, I have no way of knowing which IP address should be set, hence I need to change DNS records every time Kubernetes Master assigns a new IP address.

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zakaria

November 29, 2019

Same here. I am using helm delete sometimes which tears down all the cluster resources. When I recreate the cluster, I get a new IP address for the LB. This is annoying because I have to update the DNS entries each time. It would be nice to have a fixed IP feature, in which we can specify a fixed IP address in the LB (or ingress) configuration.

amit12b9090874ab4115b60571

December 25, 2019

same here. I’m using helms, and its a Hugh problem for me

ahopkins

December 17, 2018

@PeterBocan How did you solve this? I was thinking that I might grab a floating IP, standup a droplet and set it up with nginx to proxy to my K8S load balancer. This way when the K8S IP changes, I only need to modify my proxy server and not DNS records.

There seems like there should be a better way.

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