crio-tutorial.txt

Until packages hit repo:
curl -O https://kojipkgs.fedoraproject.org//packages/cri-o/1.0.0.alpha.0/0.git5dcbdc0.fc26.2/x86_64/cri-o-1.0.0.alpha.0-0.git5dcbdc0.fc26.2.x86_64.rpm
dnf install -y cri-o-1.0.0.alpha.0-0.git5dcbdc0.fc26.2.x86_64.rpm

Otherwise just:
dnf install -y cri-o

curl -L -O https://github.com/containernetworking/cni/releases/download/v0.5.2/cni-amd64-v0.5.2.tgz
mkdir -p /opt/cni/bin
tar xf cni-amd64-v0.5.2.tgz -C /opt/cni/bin/
mkdir -p /etc/cni/net.d
curl -o /etc/cni/net.d/10-crio-bridge.conf https://raw.githubusercontent.com/kubernetes-incubator/cri-o/master/contrib/cni/10-crio-bridge.conf
systemctl enable --now crio

dnf install kubernetes etcd -y
systemctl enable --now etcd

vi /etc/kubernetes/apiserver
# remove ServiceAccount /etc/kubernetes/apiserver
vi /etc/kubernetes/kubelet
# add "--container-runtime=remote --container-runtime-endpoint=/var/run/crio.sock" to KUBELET_ARGS
vi /usr/lib/systemd/system/kubelet.service
# remove docker.service dependency
systemctl daemon-reload
systemctl enable --now kube-apiserver kube-scheduler kube-controller-manager kube-proxy kubelet
kubectl get nodes

vi hello-openshift-pod.yaml
---
kind: Pod
apiVersion: v1
metadata:
  name: hello-openshift
spec:
  containers:
  - name: hello-openshift
    image: openshift/hello-openshift
    ports:
    - containerPort: 8080
      protocol: TCP

kubectl create -f hello-openshift-pod.yaml
kubectl get pod
docker ps
ps -fe | grep docker
crioctl pod list
kubectl describe pod hello-openshift
ip a
curl http://<pod-ip>:8080/

kubectl logs hello-openshift

kubectl run busybox --image=busybox --command -- sleep 300
kubectl exec -ti <busybox-pod> /bin/sh