How do you get Cluster Capacity (pods)?
In the image below we see Cluster Capacity is being met.
How can I get ClusterCapacity?
- Use the command just below
kubectl get nodes -o jsonpath='{.items[*].status.capacity.pods}' | tr -s ' ' '\n' | aHow it works
1. Check the Maximum Pods per Node
First, you need to determine the maximum number of pods that each node can support. This can typically be found in the node’s capacity information:
kubectl get nodes -o jsonpath='{.items[*].status.capacity.pods}'This command will print the maximum number of pods for each node in your cluster.
2. Count the Number of Nodes
Next, count the total number of nodes in your cluster:
kubectl get nodes --no-headers | wc -l3. Calculate Total Pod Capacity
You can then multiply the average (or minimum if there is a large disparity) maximum pods per node by the total number of nodes to get an estimate of the total pod capacity of the cluster.
If you want a single command to fetch the total pod capacity based on the current node configurations and assuming uniform configuration across nodes, you could use the following command chain:
kubectl get nodes -o jsonpath='{.items[*].status.capacity.pods}' | tr -s ' ' '\n' | aIn this case,
abhibaj@ABHIBAJ-M-2KXL KubernetesInstallation % kubectl get nodes -o jsonpath='{.items[*].status.capacity.pods}' | tr -s ' ' '\n' | awk '{sum += $1} END {print sum}'
116The same can be seen on the ClusterAgent page.
