I'm a beginner on Kubernetes. When I described my node, I saw this at the very bottom:
kubectl describe node ip-x-x-x-x.ap-southeast-2.compute.internal
...
Allocated resources:
(Total limits may be over 100 percent, i.e., overcommitted.)
CPU Requests CPU Limits Memory Requests Memory Limits
------------ ---------- --------------- -------------
225m (11%) 200m (10%) 125Mi (1%) 300Mi (3%)
Events: <none>
How do I un-limit the memory + cpu?
Every node has limits according to its resources: number of processors or cores, amount of memory. Kubernetes uses this information for distributing Pods across Nodes.
Referring to the official documentation:
- Meaning of CPU
One CPU, in Kubernetes, is equivalent to:
- 1 AWS vCPU
- 1 GCP Core
- 1 Azure vCore
- 1 Hyperthread on a bare-metal Intel processor with Hyperthreading
1 CPU is 1000m (1 thousand milicores)
- Meaning of memory. It is an amount of memory on the server.
In the output from kubectl describe node <node-name> command, you see statistics of resource usage. Actually, resources of your server can be counted from the example in question, it is 2 CPUs/Cores and around 10000 MB of memory.
Please note that some resources are already allocated by system Pods like kube-dns, kube-proxy or kubernetes-dashboard.