kubeasz/roles/kube-node/tasks/main.yml

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# 创建kubelet,kube-proxy工作目录和cni配置目录
- name: 创建kube-node 相关目录
file: name={{ item }} state=directory
with_items:
- /var/lib/kubelet
- /var/lib/kube-proxy
- /etc/cni/net.d
- name: 下载 kubelet,kube-proxy 二进制和基础 cni plugins
copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
with_items:
- kubelet
- kube-proxy
- bridge
- host-local
- loopback
tags: upgrade_k8s
##----------kubelet 配置部分--------------
# kubelet 启动时向 kube-apiserver 发送 TLS bootstrapping 请求,需要绑定该角色
# 只需单节点执行一次
- name: get clusterrolebinding info
shell: "{{ bin_dir }}/kubectl get clusterrolebinding --all-namespaces"
register: clusterrolebinding_info
run_once: true
- name: kubelet-bootstrap-setting
shell: "{{ bin_dir }}/kubectl create clusterrolebinding kubelet-bootstrap \
--clusterrole=system:node-bootstrapper --user=kubelet-bootstrap"
run_once: True
when: '"kubelet-bootstrap" not in clusterrolebinding_info.stdout'
- name: 安装bootstrap.kubeconfig配置文件
copy: src=/etc/kubernetes/bootstrap.kubeconfig dest=/etc/kubernetes/bootstrap.kubeconfig
- name: 准备 cni配置文件
template: src=cni-default.conf.j2 dest=/etc/cni/net.d/10-default.conf
- name: 创建kubelet的systemd unit文件
template: src=kubelet.service.j2 dest=/etc/systemd/system/kubelet.service
tags: upgrade_k8s, restart_node
- name: 开机启用kubelet 服务
shell: systemctl enable kubelet
ignore_errors: true
- name: 开启kubelet 服务
shell: systemctl daemon-reload && systemctl restart kubelet
tags: upgrade_k8s, restart_node
##-------kube-proxy部分----------------
- name: 安装kube-proxy.kubeconfig配置文件
copy: src=/etc/kubernetes/kube-proxy.kubeconfig dest=/etc/kubernetes/kube-proxy.kubeconfig
- name: 创建kube-proxy 服务文件
tags: reload-kube-proxy, upgrade_k8s, restart_node
template: src=kube-proxy.service.j2 dest=/etc/systemd/system/kube-proxy.service
- name: 开机启用kube-proxy 服务
shell: systemctl enable kube-proxy
ignore_errors: true
- name: 开启kube-proxy 服务
shell: systemctl daemon-reload && systemctl restart kube-proxy
tags: reload-kube-proxy, upgrade_k8s, restart_node
# 批准 node 节点首先轮询等待kubelet启动完成
- name: 轮询等待kubelet启动
shell: "systemctl status kubelet.service|grep Active"
register: kubelet_status
until: '"running" in kubelet_status.stdout'
retries: 8
delay: 2
- name: 获取csr 请求信息
shell: "sleep 3 && {{ bin_dir }}/kubectl get csr"
register: csr_info
run_once: true
- name: approve-kubelet-csr
shell: "{{ bin_dir }}/kubectl get csr|grep 'Pending' | awk 'NR>0{print $1}'| \
xargs {{ bin_dir }}/kubectl certificate approve"
when: '"Pending" in csr_info.stdout'
run_once: true
- name: 轮询等待node达到Ready状态
shell: "{{ bin_dir }}/kubectl get node {{ inventory_hostname }}|awk 'NR>1{print $2}'"
register: node_status
until: node_status.stdout == "Ready" or node_status.stdout == "Ready,SchedulingDisabled"
retries: 8
delay: 8
tags: upgrade_k8s, restart_node
- name: 设置node节点role
shell: "{{ bin_dir }}/kubectl label node {{ inventory_hostname }} kubernetes.io/role=node --overwrite"
ignore_errors: true