Failed to Scale agentpool nodein kubernets service error: Pre allocated IPS2180 Exceed IP available 500

Question

Failed to Scale agentpool node in kubernets service error: Pre allocated IPS2180 Exceed IP available 500 please help this how to resolve even in subnet showing 505 ip there and we are increasing max node to 20 only please help us its prod and how to resolve in existing cluster only please it is urgent

Answer 1

Hi Saurin,

Best approach and the fully supported one , is with below steps:

1.    Create a new subnet with a larger, non-overlapping range.

2.    Create a new node pool on the new subnet.

3.    Drain the pods from the old node pool that resides in the old subnet.

4.    Delete the old subnet and old node pool.

You can see more in below:

https://learn.microsoft.com/en-us/troubleshoot/azure/azure-kubernetes/insufficientsubnetsize-error-advanced-networking

-Asaf