CRI-O is an alternative container runtime for Kubernetes. It is designed to be lightweight and have a minimal footprint, making it ideal for running containers on Kubernetes. CRI-O uses the Open Containers Initiative (OCI) runtime specification and is compatible with the Kubernetes CRI (Container Runtime Interface).
There are a few reasons why you might want to use CRI-O with Kubernetes:
Using CRI-O with Kubernetes is easy. You can either use the CRI-O container runtime directly, or use the CRI-O Kubernetes integration.
To use the CRI-O container runtime directly, you need to set the --runtime
flag when starting the Kubernetes kubelet
:
$ kubelet --runtime=cri-o
To use the CRI-O Kubernetes integration, you need to set the --container-runtime
flag when starting the Kubernetes kubelet
:
$ kubelet --container-runtime=cri-o
You also need to set the --feature-gates
flag to enable the CRI-O Kubernetes integration:
$ kubelet --feature-gates=CRIO=true
CRI-O is a great alternative container runtime for Kubernetes. It is designed to be lightweight and have a minimal footprint, making it ideal for running containers on Kubernetes. CRI-O uses the Open Containers Initiative (OCI) runtime specification and is compatible with the Kubernetes CRI (Container Runtime Interface). CRI-O is also integrated with the Kubernetes container network interface (CNI) plugin. This makes it easy to set up networking for containers running on Kubernetes.