IPs are masqueraded by default in Autopilot to use the node IP for egress traffic. which is just a fancy way of saying, the Pod traffic looks like it comes from the node’s IP. This is handy when using non-RFC1918 ranges in GKE to avoid IP exhaustion, since your Node IP range is typically in… Continue reading Editing IP Masquerading rules for GKE Autopilot
Tag: ip-utilization
GKE Network Planning (2023)
GKE operates on a flat VPC structure. That means that every Node and Pod has an identity within your VPC, and their IPs are not re-used. This is convenient, as Pods are addressable within the VPC, but unless you create multiple VPCs to isolate resources, you can end up using a lot of IPs very… Continue reading GKE Network Planning (2023)
Adding Pod IP ranges to GKE clusters
Did you know that you can now add Pod IP ranges to GKE clusters? Pods use a lot of IPs, which in the past forced you to compromise. Do you allocate a lot of IPs to the cluster allowing for growth while reserving a big group of IPs, or do you allocate just a little… Continue reading Adding Pod IP ranges to GKE clusters