Minikube: Start With More Memory & CPUs

Minikube is a single-node Kubernetes cluster that can be installed on macOS, Linux and Windows.

By default, it starts with 2 CPUs and 2GB of memory, that may not be enough for experiments with some heavy projects.

This note describes 3 easy ways to start the Minikube with more memory and CPUs.

Start Minikube With More Memory & CPUs

Before changing the Minikube’s resources, take into account that it requires at least 2 CPUs and 2GB of memory:

Exiting due to RSRC_INSUFFICIENT_CORES: Requested cpu count 1 is less than the minimum allowed of 2
– or –
Exiting due to RSRC_INSUFFICIENT_REQ_MEMORY: Requested memory allocation 1024 MiB is less than the usable minimum of 1800MB

You can check the resources of the running Minikube instance, using the kubectl:

$ kubectl get node minikube -o jsonpath='{.status.capacity}'

If your Minikube instance uses the VirtualBox driver, you can get the memory and CPU settings with the vboxmanage command:

$ vboxmanage showvminfo minikube | grep "Memory size\|Number of CPUs"
Memory size                  1900MB
Number of CPUs:              2

Option 1 – Delete & Recreate With More Resources

Warning: This method requires the deletion of the current instance of Minikube.

To start the Minikube with more memory and CPUs, the easiest way is to delete the current instance and recreate it with the new resources:

$ minikube stop
$ minikube delete
$ minikube start --memory 8192 --cpus 2

Option 2 – Set The Memory & CPU

Alternatively you can try set the memory and CPU settings as follows:

$ minikube stop
$ minikube config set memory 8192
$ minikube config set cpus 4
$ minikube start

This method doesn’t require the deletion of the Minikube, but doesn’t work for all drivers, so you may see the errors as follows:

These changes will take effect upon a minikube delete and then a minikube start
– or –
You cannot change the memory size for an existing minikube cluster. Please first delete the cluster.

Option 3 – Add More Memory & CPUs To The VirtualBox VM

If the Minikube uses the VirtualBox driver, you can add more memory and CPUs to the Minikube’s VM without deleting it.

Stop the Minikube:

$ minikube stop

Change the VM’s memory and CPU settings using the vboxmanage command:

$ vboxmanage modifyvm "minikube" --cpus 4 --memory 8192

Or start the “Oracle VM VirtualBox” GUI and change the VM’s resources through it.

After changing the VM’s resources, give the VirtualBox a couple of seconds before starting the Minikube, otherwise you may get:

Exiting due to PROVIDER_VIRTUALBOX_NOT_RUNNING: signal: killed

Start the Minikube with more memory and CPUs:

$ minikube start