[k8s] CRI-O 설치, kubelet 에 적용

• 설치할 kubernetes, CRI-O 버전

KUBERNETES_VERSION=v1.32
CRIO_VERSION=v1.32

• kubernetes, CRI-O repository 추가

sudo cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://pkgs.k8s.io/core:/stable:/$KUBERNETES_VERSION/rpm/
enabled=1
gpgcheck=1
gpgkey=https://pkgs.k8s.io/core:/stable:/$KUBERNETES_VERSION/rpm/repodata/repomd.xml.key
EOF

sudo cat <<EOF | sudo tee /etc/yum.repos.d/cri-o.repo
[cri-o]
name=CRI-O
baseurl=https://download.opensuse.org/repositories/isv:/cri-o:/stable:/$CRIO_VERSION/rpm/
enabled=1
gpgcheck=1
gpgkey=https://download.opensuse.org/repositories/isv:/cri-o:/stable:/$CRIO_VERSION/rpm/repodata/repomd.xml.key
EOF

• 의존성 패키지 설치
  yum install -y container-selinux
yum install -y cri-o kubelet kubeadm kubectl

• crio 서비스 enable

systemctl start crio.service
systemctl enable --now crio

• cluster bootstrapping

swapoff -a
modprobe br_netfilter
sysctl -w net.ipv4.ip_forward=1

kubeadm init

• crio.sock 소켓 파일을 통해

ls -al /var/run/crio/crio.sock

• kubelet 설정에 crio socket 을 지정
  • /etc/systemd/system/kubelet.service.d/10-crio.conf

[Service]
Environment="KUBELET_EXTRA_ARGS=--container-runtime=remote --container-runtime-endpoint=unix:///var/run/crio/crio.sock --runtime-request-timeout=15m"

• kubelet reload, 재시작

sudo systemctl daemon-reload
sudo systemctl restart kubelet

• crio, 노드 동작 상태 점검

sudo crictl info
kubectl get nodes

reference

• https://cri-o.io/