KyungRyeol Yoon KyungRyeol Yoon
Kubernetes · Cluster ·

[Kubernetes] Install K3S(v1.29.5+k3s1) on Multipass

· 2분 읽기

VM deployments used multipass on mac #

  • master node 생성

    1multipass launch --name k3s-master --cpus 2 --memory 4G --disk 50G focal

  • worker1 node 생성

    1multipass launch --name k3s-worker1 --cpus 2 --memory 4G --disk 50G focal

  • worker2 node 생성

    1multipass launch --name k3s-worker2 --cpus 2 --memory 4G --disk 50G focal

  • registry node 생성

    1multipass launch --name registry --cpus 2 --memory 4G --disk 100G focal

ubuntu 구동 확인 #

1multipass list
1multipass ls
1multipass info --all

ubuntu swapoff #

  • master node swapoff

    1multipass exec k3s-master -- /bin/bash -c "sudo swapoff -a"

  • worker1 node swapoff

    1multipass exec k3s-worker1 -- /bin/bash -c "sudo swapoff -a"

  • worker2 node swapoff

    1multipass exec k3s-worker2 -- /bin/bash -c "sudo swapoff -a"

  • registry node swapoff

    1multipass exec registry -- /bin/bash -c "sudo swapoff -a"

ubuntu 메모리 사용량 확인 #

  • master node 메모리 사용량 확인

    1multipass exec k3s-master -- /bin/bash -c "free -m"

  • worker1 node 메모리 사용량 확인

    1multipass exec k3s-worker1 -- /bin/bash -c "free -m"

  • worker2 node 메모리 사용량 확인

    1multipass exec k3s-worker2 -- /bin/bash -c "free -m"

  • registry node 메모리 사용량 확인

    1multipass exec registry -- /bin/bash -c "free -m"

k3s master 설치 #

1multipass exec k3s-master -- /bin/bash -c "curl -sfL https://get.k3s.io | K3S_KUBECONFIG_MODE="644" sh -"

k3s master Token 정보 조회 #

1multipass exec k3s-master -- /bin/bash -c "sudo cat /var/lib/rancher/k3s/server/node-token"

k3s worker Node 설치 #

1multipass exec k3s-node1 -- /bin/bash -c "curl -sfL https://get.k3s.io | K3S_TOKEN=\"<토큰 정보>\" K3S_URL=https://<마스터 노드 IP>:6443 sh -"
1K3S_NODEIP_MASTER="https://$(multipass info k3s-master | grep "IPv4" | awk -F' ' '{print $2}'):6443"
2K3S_TOKEN="$(multipass exec k3s-master -- /bin/bash -c "sudo cat /var/lib/rancher/k3s/server/node-token")"
3multipass exec k3s-worker1 -- /bin/bash -c "curl -sfL https://get.k3s.io | K3S_TOKEN=${K3S_TOKEN} K3S_URL=${K3S_NODEIP_MASTER} sh -"
4multipass exec k3s-worker2 -- /bin/bash -c "curl -sfL https://get.k3s.io | K3S_TOKEN=${K3S_TOKEN} K3S_URL=${K3S_NODEIP_MASTER} sh -"

k3s 노드 정보를 확인 한다. #

1multipass exec k3s-master kubectl get nodes

Copy multipass vm kubectl config locally #

  • 계속 multipass cli를 사용하기는 귀찮으므로 k3s master node에서 k3s.yaml 파일을 로컬 Mac으로 가져온다.
  • kubectl은 미리 Mac에 설치 되어 있었고, 없다면 설치 해야 한다.
1multipass copy-files k3s-master:/etc/rancher/k3s/k3s.yaml ${HOME}/.kube/k3s.yaml
2sed -ie s,https://127.0.0.1:6443,${K3S_NODEIP_MASTER},g ${HOME}/.kube/k3s.yaml
3kubectl --kubeconfig=${HOME}/.kube/k3s.yaml get nodes

Configure cluster node roles and taint #

1NAME          STATUS   ROLES                  AGE   VERSION
2k3s-master    Ready    control-plane,master   36m   v1.29.5+k3s1
3k3s-worker1   Ready    <none>                 29m   v1.29.5+k3s1
4k3s-worker2   Ready    <none>                 29m   v1.29.5+k3s1
1kubectl --kubeconfig=${HOME}/.kube/k3s.yaml label node k3s-master node-role.kubernetes.io/master=""
2kubectl --kubeconfig=${HOME}/.kube/k3s.yaml label node k3s-worker1 node-role.kubernetes.io/node=""
3kubectl --kubeconfig=${HOME}/.kube/k3s.yaml label node k3s-worker2 node-role.kubernetes.io/node=""
4kubectl --kubeconfig=${HOME}/.kube/k3s.yaml taint node k3s-master node-role.kubernetes.io/master=effect:NoSchedule
5kubectl --kubeconfig=${HOME}/.kube/k3s.yaml get nodes -o wide
1NAME          STATUS   ROLES                  AGE   VERSION
2k3s-worker1   Ready    node                   33m   v1.29.5+k3s1
3k3s-worker2   Ready    node                   32m   v1.29.5+k3s1
4k3s-master    Ready    control-plane,master   39m   v1.29.5+k3s1
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