如何支持k8s升级操作

[ming135]

Your current KubeKey version

4.0.2

Describe this feature

我想使用kk把k8s集群从v1.25升级到v1.33或者v1.34版本

Describe the solution you'd like

我想使用kk把k8s集群从v1.25升级到v1.33或者v1.34版本，请问支持升级么

Additional information

No response

[kinglong08]

kubekey目前支持部署k8s 1.34版本么？

[redscholar]

目前kkv4 还不支持升级，可以使用kkv3.1.11来做集群升级

[will4j]

For anyone who want to upgrade k8s cluster using kubekey v4, below is my playbooks for temporary use before kubekey comunity support cluster upgrade. hope this be helpful in case.

upgrade should be planned according to Upgrading kubeadm clusters doc, and use sudo kubeadm upgrade plan to get available target version before apply upgrade.

then execute upgrade command as:

# can retry specify phase by tags like [--tags worker] to retry upgrade worker nodes
kk run playbooks/upgrade-kube.yaml --workdir . -i <your inventory> -c <your config> --set upgrade_kube_version=v1.3x.xx

those are playbook files:

# playbooks/upgrade-kube.yaml
---
- name: Kube upgrade precheck
  tags: ["always"]
  hosts:
    - k8s_cluster
  roles:
    - defaults
  tasks:
    - name: Ensure target upgrade kube version specified
      run_once: true
      assert:
        that: .upgrade_kube_version | empty | not
        fail_msg: "should specific target version by --set upgrade_kube_version=xxx"

- hosts:
    - kube_control_plane[0]
  tags: ["first_ctrl"]
  roles:
    - kube-upgrade

- hosts:
    - kube_control_plane
  tags: ["rest_ctrl"]
  roles:
    - role: kube-upgrade
      when: .inventory_hostname | ne .chief_ctrl

- hosts:
    - kube_worker
  tags: ["worker"]
  roles:
    - role: kube-upgrade

# roles/defaults/defaults/main.yaml
work_dir: /root/kubekey
binary_dir: >-
  {{ .work_dir }}/kubekey
addons_dir: >-
  {{ .work_dir }}/addons
scripts_dir: >-
  {{ .work_dir }}/scripts
target_host: ""

# roles/defaults/tasks/main.yaml
---
- name: Default | Select single chief control node to delegate command
  run_once: true
  add_hostvars:
    hosts: all
    vars:
      chief_ctrl: >-
        {{ .groups.kube_control_plane | default list | first }}

# roles/kube-upgrade/tasks/main.yaml
---
- name: Kube Upgrade | Copy kubeadm to upgrade node
  tags: ["binary"]
  copy:
    src: >-
      {{ .binary_dir }}/kube/{{ .upgrade_kube_version }}/amd64/kubeadm
    dest: /usr/local/bin/kubeadm
    mode: 0755

- name: Kube Upgrade | Upgrade first control plane node
  when: .inventory_hostname | eq .chief_ctrl
  command: |
    kubeadm upgrade apply -y {{ .upgrade_kube_version }}

- name: Kube Upgrade | Upgrade other kube node
  when: .inventory_hostname | ne .chief_ctrl
  command: |
    kubeadm upgrade node

- name: Kube Upgrade | Copy kubelet to upgrade nodes
  tags: ["binary"]
  copy:
    src: >-
      {{ .binary_dir }}/kube/{{ .upgrade_kube_version }}/amd64/kubelet
    dest: /usr/local/bin/kubelet
    mode: 0755

- name: Kube Upgrade | Copy kubectl to upgrade nodes
  tags: ["binary"]
  copy:
    src: >-
      {{ .binary_dir }}/kube/{{ .upgrade_kube_version }}/amd64/kubectl
    dest: /usr/local/bin/kubectl
    mode: 0755

- name: Kube Upgrade | Restart kubelet service
  command: |
    systemctl daemon-reload
    systemctl restart kubelet

[zouchengli]

目前kkv4 还不支持升级，可以使用kkv3.1.11来做集群升级

4版本预计什么时候支持？有排期吗，k8s升级太快了，安装新版本过不了多久就会用到升级，这个功能还是挺常用的，希望能尽快支持哦。