K8S集群部署（脚本方法）

ZY小袁2026-08-23 19:43

一.构建部署kubernetes所需主机

主机名 ip 配置 角色
harbor.timinglee.org 172.25.254.250 cpu1、mem 1G harbor仓库
master-node 172.25.254.100 cpu4、mem>4G master，k8s集群控制节点
node1 172.25.254.10 cpu2、mem 2G worker，k8s集群工作节点
node2 172.25.254.20 cpu2、mem 2G worker，k8s集群工作节点

各主机之间确保互通

二.构建harbor镜像仓库

1.部署docker本地仓库

bash 复制代码 
[root@harbor ~]# cat > /etc/yum.repos.d/docker.repo <<EOF
[docker]
name = docker
baseurl = https://mirrors.aliyun.com/docker-ce/linux/rhel/9.6/x86_64/stable/
gpgcheck = 0
EOF

#安装软件
[root@harbor ~]# dnf install httpd createrepo -y
[root@harbor ~]# mkdir  /var/www/html/docker/ -p
[root@harbor ~]# vim /etc/httpd/conf/httpd.conf
#修改端口
Listen 4444
#启动服务
[root@harbor ~]# systemctl enable --now httpd

#安装docker
[root@harbor ~]# dnf  install docker-ce -downloadonly  --destdir /mnt/ -y

[root@harbor ~]# mv /mnt/*.rpm /var/www/html/docker/
[root@harbor ~]# createrepo -v /var/www/html/docker/

[root@harbor ~]# cat > /etc/yum.repos.d/docker.repo <<EOF
[docker]
name = docker
baseurl = http://172.25.254.250:4444/docker
gpgcheck = 0
EOF

2.安装docker在harbor仓库节点

bash 复制代码 
[root@harbor ~]# dnf install docker-ce -y

[root@harbor ~]# echo br_netfilter > /etc/modules-load.d/docker_mod.conf
[root@harbor ~]# modprobe -a br_netfilter
[root@harbor ~]# vim /etc/sysctl.d/docker.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1

[root@harbor ~]# systemctl restart  systemd-modules-load.service
[root@harbor ~]# sysctl  --system

[root@harbor ~]# vim /lib/systemd/system/docker.service
#在这一行添加参数 --iptables=true
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --iptables=true
[root@harbor ~]# systemctl daemon-reload
[root@harbor ~]# systemctl enable --now docker

2.生成key

bash 复制代码 
[root@harbor ~]# mkdir /data/certs -p

[root@harbor ~]# openssl req -newkey  rsa:4096 \
-nodes -sha256 -keyout /data/certs/timinglee.org.key \
-addext "subjectAltName = DNS:reg.timinglee.org" \
-x509 -days 365 -out /data/certs/timinglee.org.crt

You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:CN                  #添加信息
State or Province Name (full name) []:Shannxi
Locality Name (eg, city) [Default City]:Xi'an
Organization Name (eg, company) [Default Company Ltd]:kubernetes
Organizational Unit Name (eg, section) []:harbor
Common Name (eg, your name or your server's hostname) []:reg.timinglee.org
Email Address []:admin@timinglee.org

3.编辑harbor配置文件

bash 复制代码 
#解压文件，没有可去官方下载
[root@harbor ~]# tar zxf  harbor-offline-installer-v2.5.4.tgz -C /opt/
[root@harbor ~]# cd /opt/harbor/
[root@harbor harbor]# ls
common.sh  harbor.v2.5.4.tar.gz  harbor.yml.tmpl  install.sh  LICENSE  prepare
[root@harbor harbor]# cp harbor.yml.tmpl harbor.yml
[root@harbor harbor]# vim harbor.yml
hostname: reg.timinglee.org  #修改名字
  certificate: /data/certs/timinglee.org.crt   #修改位置
  private_key: /data/certs/timinglee.org.key
harbor_admin_password: lee   #密码，后续会用


[root@harbor harbor]# ./install.sh --with-chartmuseum


#编写启动脚本
[root@harbor ~]# vim /lib/systemd/system/harbor.service
[Unit]
Description=harbor with Docker Compose
Documentation=https://reg.timinglee.com/compose/
After=docker.service network-online.target
Requires=docker.service

[Service]
Type=oneshot
WorkingDirectory=/opt/harbor
ExecStart=/usr/bin/docker compose up -d
ExecStop=/usr/bin/docker compose down
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

[root@harbor harbor]# docker compose  down
WARN[0000] /opt/harbor/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion
[+] down 4/6
 ⠇ Container registryctl       Stopping                                                1.9s
 ✔ Container nginx             Removed                                                 0.2s
 ✔ Container chartmuseum       Removed                                                 0.2s
 ✔ Container harbor-jobservice Removed                                                 0.1s
 ✔ Container harbor-portal     Removed                                                 0.1s
 ⠦ Container harbor-core       Stopping                                                1.7s
 
[root@harbor ~]# systemctl enable --now harbor
Created symlink /etc/systemd/system/multi-user.target.wants/harbor.service → /usr/lib/systemd/system/harbor.service.

[root@harbor harbor]# docker compose  ps

4.启动并验证

bash 复制代码 
[root@harbor harbor]# mkdir  /etc/docker/certs.d/reg.timinglee.org/ -p
[root@harbor harbor]# cp /data/certs/timinglee.org.crt  /etc/docker/certs.d/reg.timinglee.org/ca.crt
[root@harbor harbor]# vim /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.25.254.250     harbor reg.timinglee.org


[root@harbor harbor]# systemctl restart docker
[root@harbor harbor]# docker compose up -d

[root@harbor harbor]# docker login  reg.timinglee.org -u admin
Password:

WARNING! Your credentials are stored unencrypted in '/root/.docker/config.json'.
Configure a credential helper to remove this warning. See
https://docs.docker.com/go/credential-store/

Login Succeeded

5.所有主机配置

关闭swap

bash 复制代码 
systemctl disable --now  swap.target
systemctl mask swap.target
sed '/swap/s/^/#/g' -i /etc/fstab

所有主机配置docker加速器

bash 复制代码 
cat >/etc/docker/daemon.json <<EOF
{
  "registry-mirrors":["https://reg.timinglee.org"]
}
EOF

systemctl restart docker

docker info
#可以看到
Registry Mirrors:
  https://reg.timinglee.org/

所有主机彼此建立解析

bash 复制代码 
vim /etc/hosts #进入文件

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.25.254.100     master
172.25.254.10      node1
172.25.254.20      node2
172.25.254.250     reg.timinglee.org

所有主机配置kubernetes安装源

bash 复制代码 
vim /etc/yum.repos.d/kubernetes.repo

[kubernetes]
name = kubernetes
baseurl = https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.35/rpm/
gpgcheck = 0


#检测
dnf list kubelet

以上操作完成后重启主机检测swap分区

bash 复制代码 
swapon  -s  没有任何输出表示ok

三.利用Ansible部署kubernetes运行环境

1.安装ansible

bash 复制代码 
[root@harbor ~]# vim /etc/yum.repos.d/epel.repo
[epel]
name = epel
baseurl = https://mirrors.aliyun.com/epel/9.6/Everything/x86_64/
gpgcheck = 0

[root@harbor ~]# dnf install ansible-core.x86_64 ansible.noarch -y

2.配置所需用户

bash 复制代码 
[root@harbor ~]# useradd  devops
[root@harbor ~]# echo lee | passwd --stdin devops
更改用户 devops 的密码 。
passwd：所有的身份验证令牌已经成功更新

[root@harbor ~]# su - devops
[devops@harbor ~]$ mkdir  ansible
[devops@harbor ~]$ cd ansible/
[devops@harbor ansible]$

3.生成ansible的临时配置文件并建立运行环境

bash 复制代码 
[devops@harbor ansible]$ vim inventory
[servers]
172.25.254.100
172.25.254.20
172.25.254.10

[devops@harbor ansible]$ vim ansible.cfg
[defaults]
inventory = /home/devops/ansible/inventory
remote_user = root
ask_pass = false
host_key_checking = false


[devops@harbor ansible]$ ansible all -m ping
172.25.254.20 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python3"
    },
    "changed": false,
    "ping": "pong"
}
172.25.254.100 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python3"
    },
    "changed": false,
    "ping": "pong"
}
172.25.254.10 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python3"
    },
    "changed": false,
    "ping": "pong"
}


#建立用户
[devops@harbor ansible]$ ansible all -m user -a "name=devops state=present"
[devops@harbor ansible]$ ansible all -m shell -a 'echo "lee" | passwd --stdin devops'
[devops@harbor ansible]$ ansible all -m lineinfile -a 'path=/etc/sudoers line="devops    ALL=(ALL)    NOPASSWD: ALL" insertafter=EOF'

4.生成ansible的主配置文件并测试

bash 复制代码 
[devops@harbor ansible]$ vim ansible.cfg
[defaults]
inventory = /home/devops/ansible/inventory
remote_user = devops
ask_pass = false
host_key_checking = false

[privilege_escalation]
become = true
become_method = sudo
become_user = root
become_ask_pass = false


[devops@harbor ansible]$ ansible all -m shell -a 'whoami '
172.25.254.10 | CHANGED | rc=0 >>
root
172.25.254.100 | CHANGED | rc=0 >>
root
172.25.254.20 | CHANGED | rc=0 >>
root

5.利用ansible剧本部署docker

bash 复制代码 
[devops@harbor ansible]$ vim kubernetes-devops.yml
- name: devops k8s from ansible
  hosts: all
  tasks:
  - name: setup docker repo
    yum_repository:
      name: docker
      description: docker
      baseurl: http://172.25.254.254:4444/docker
      file: docker
      gpgcheck: no

  - name: install docker
    dnf:
      name: docker-ce
      state: present


  - name: setup docker.service
    replace:
      path: /lib/systemd/system/docker.service
      regexp: "ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock"
      replace: "ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock  --iptables=true"

  - name: setup docker registry
    copy:
      content: |
        {
          "registry-mirrors":["https://reg.timinglee.org"]
        }
      dest: /etc/docker/daemon.json

  - name: setup docker certs
    file:
      path: /etc/docker/certs.d/reg.timinglee.org
      state: directory


  - name: cp certs file
    copy:
      src: "{{item.src}}"
      dest: "{{item.dest}}"
    loop:
      - src: /etc/docker/certs.d/reg.timinglee.org/ca.crt
        dest: /etc/docker/certs.d/reg.timinglee.org/ca.crt

      - src: /etc/docker/certs.d/reg.timinglee.org/ca.crt
        dest: /etc/pki/ca-trust/source/anchors/ca.crt
  
  - name: load module
    copy:
      dest: "{{item.dest}}"
      content: "{{item.value}}"
    loop:
      - dest: /etc/modules-load.d/docker_mod.conf
        value: br_netfilter
      - dest: /etc/sysctl.d/docker.conf
        value: |
          net.bridge.bridge-nf-call-iptables = 1
          net.bridge.bridge-nf-call-ip6tables = 1
          net.ipv4.ip_forward = 1

  - name: update ca cert
    shell: "update-ca-trust extract;sysctl --system"

  - name: start services
    service:
      name: "{{item}}"
      state: restarted
      enabled: yes
    loop:
      - docker
      - systemd-modules-load.service

      
      
[devops@harbor ansible]$ ansible-playbook kubernetes-devops.yml

6.利用ansible安装cri-dockerd

bash 复制代码 
#解压文件，没有需要下载
[devops@harbor ansible]$ tar zxf cri-dockerd-0.4.4.amd64.tgz
[devops@harbor ansible]$ ls
ansible.cfg  cri-dockerd  cri-dockerd-0.4.4.amd64.tgz  inventory  kubernetes-devops.yml
[devops@harbor ansible]$ cd cri-dockerd/
[devops@harbor cri-dockerd]$ ls
cri-dockerd  cri-docker.service  cri-docker.socket
[devops@harbor cri-dockerd]$ vim cri-docker.service
[Service]
Type=notify
ExecStart=/usr/bin/cri-dockerd --container-runtime-endpoint fd:// --network-plugin=cni --pod-infra-container-image=reg.timinglee.org/k8s/pause:3.10.1 
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always


[devops@harbor ansible]$ vim kubernetes-devops.yml
- name: devops k8s from ansible
  hosts: all
  tasks:
  - name: setup docker repo
    yum_repository:
      name: docker
      description: docker
      baseurl: http://172.25.254.254:4444/docker
      file: docker
      gpgcheck: no

  - name: install docker
    dnf:
      name: docker-ce
      state: present


  - name: setup docker.service
    replace:
      path: /lib/systemd/system/docker.service
      regexp: "ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock"
      replace: "ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock  --iptables=true"

  - name: setup docker registry
    copy:
      content: |
        {
          "registry-mirrors":["https://reg.timinglee.org"]
        }
      dest: /etc/docker/daemon.json

  - name: setup docker certs
    file:
      path: /etc/docker/certs.d/reg.timinglee.org
      state: directory


  - name: cp certs file
    copy:
      src: "{{item.src}}"
      dest: "{{item.dest}}"
    loop:
      - src: /etc/docker/certs.d/reg.timinglee.org/ca.crt
        dest: /etc/docker/certs.d/reg.timinglee.org/ca.crt

      - src: /etc/docker/certs.d/reg.timinglee.org/ca.crt
        dest: /etc/pki/ca-trust/source/anchors/ca.crt


########################################################以下是新加内容
  - name: stup cri-dockerd
    copy:
      src: "{{item.src}}"
      dest: "{{item.dest}}"
      mode: '0755'
    loop:
      - src: ./cri-dockerd/cri-dockerd
        dest: /usr/bin/cri-dockerd

      - src: "./cri-dockerd/cri-docker.service"
        dest: "/lib/systemd/system/cri-docker.service"

      - src: "./cri-dockerd/cri-docker.socket"
        dest: "/lib/systemd/system/cri-docker.socket"

  - name: update ca cert
    shell: "update-ca-trust extract;sysctl --system;systemctl daemon-reload"

  - name: start services
    service:
      name: "{{item}}"
      state: restarted
      enabled: yes
    loop:
      - docker
      - systemd-modules-load.service
      - cri-docker

[devops@harbor ansible]$ ansible-playbook kubernetes-devops.yml

7.利用ansible部署k8s软件

bash 复制代码 
[devops@harbor ansible]$ vim kubernetes-devops.yml
#接着上面的内容后面添加新内容
- name: install kubernetes from ansible
  hosts: all
  tasks:
  - name: setup k8s repo
    yum_repository:
      name: kubernetes
      description: kubernetes
      baseurl: https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.35/rpm
      file: kubernetes
      gpgcheck: no

  - name: install software in master
    dnf:
      name: "{{item}}"
      state: present
    loop:
      - kubeadm-1.35.7-150500.1.1
      - kubelet-1.35.7-150500.1.1
      - kubectl-1.35.7-150500.1.1
    when: inventory_hostname == "172.25.254.100"

  - name: install software in work node
    dnf:
      name: "{{item}}"
      state: present
    loop:
      - kubeadm-1.35.7-150500.1.1
      - kubelet-1.35.7-150500.1.1
    when: inventory_hostname == "172.25.254.10" or inventory_hostname == "172.25.254.20"
  
  - name: setup kubectl kubeadm complication
    lineinfile:
      path: /root/.bashrc
      line: |
        source <(kubectl completion bash)
        source <(kubeadm completion bash)
    when: inventory_hostname == "172.25.254.100"

  - name: start kubelet
    service:
      name: kubelet
      state: started
      enabled: yes
[devops@harbor ansible]$ ansible-playbook kubernetes-devops.yml


#让补齐功能生效
[root@k8s-master mnt]# source  ~/.bashrc
[root@k8s-master mnt]# kubectl 命令后按2次tab键
alpha          (Commands for features in alpha)
annotate       (更新一个资源的注解)
api-resources  (Print the supported API resources on the server)
api-versions   (Print the supported API versions on the server, in the form of "group/version")
apply          (Apply a configuration to a resource by file name or stdin)
attach         (挂接到一个运行中的容器)
auth           (Inspect authorization)
autoscale      (Auto-scale a deployment, replica set, stateful set, or replication controller)
certificate    (Modify certificate resources)

[root@k8s-master mnt]# kubeadm
certs       config      init        kubeconfig  token       version
completion  help        join        reset       upgrade


[root@k8s-master mnt]# systemctl status kubelet.service
● kubelet.service - kubelet: The Kubernetes Node Agent
     Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; preset: disabled)
    Drop-In: /usr/lib/systemd/system/kubelet.service.d
             └─10-kubeadm.conf
     Active: activating (auto-restart) (Result: exit-code) since Tue 2026-08-18 17:09:25 CST; 1s ago
       Docs: https://kubernetes.io/docs/
    Process: 79433 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_>
   Main PID: 79433 (code=exited, status=1/FAILURE)
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