Given nodes and pods per node, estimate minimum subnet sizes.
Results
Primary Subnet Prefix length:
Secondary Subnet Prefix Length:
Pod CIDR Block per Node:
Field descriptions
Planned number of Nodes: The number of nodes you plan
to have in your cluster.
Pods per Node: The maximum number of Pods that can
run on a single node. In Standard clusters, the default is
110 (configurable from 8 to 512). In Autopilot clusters,
GKE sets this dynamically per node (between 8 and 256);
enter an estimated average for approximate sizing.
Primary Subnet Prefix length: The calculated minimum
prefix size for the primary IP range needed to support the planned
number of nodes. This range is used for node and load balancer IP
addresses.
Secondary Subnet Prefix Length: The calculated
minimum prefix size for the secondary IP range needed to support Pods
for the planned number of nodes.
Pod CIDR Block per Node: The IP address range
assigned to each node for its Pods.
Estimate by Subnet Ranges
Calculate Node Limits
Given subnet sizes and pods per node, estimate node limits.
Results
Max nodes supportable by primary subnet:
Max nodes supportable by secondary subnet:
Overall Max Nodes:
Overall Max Pods:
Field descriptions
Primary Subnet Prefix length: The prefix size of the
primary IP range used for node and load balancer IP addresses.
Secondary Subnet Prefix Length: The prefix size of
the secondary IP range used for Pod IP addresses.
Pods per Node: The maximum number of Pods that can
run on a single node. In Standard clusters, the default is
110 (configurable from 8 to 512). In Autopilot clusters,
GKE sets this dynamically per node (between 8 and 256);
enter an estimated average for approximate sizing.
Max nodes supportable by primary subnet: The maximum
number of nodes that the primary IP range can accommodate.
Max nodes supportable by secondary subnet: The
maximum number of nodes that the secondary IP range can accommodate,
based on Pod IP requirements per node.
Overall Max Nodes: The effective maximum node count
for the cluster, limited by the smaller of the primary and secondary
subnet capacities.
Overall Max Pods: The total number of Pods the
cluster can support with the calculated Overall Max Nodes.