SundayHK

使用KubeKey快速部署Kubernetes集群1.28.8

2024-09-25 342 0

主机信息

主机 IP 主机名 角色 硬件
192.168.77.131 k8s-master01 control plane, etcd 4H4G
192.168.77.132 k8s-node01 worker 4H4G
192.168.77.133 k8s-node02 worker 4H4G

系统软件版本

  • OS：Ubuntu 22.04.3 LTS
  • Kernel：Linux 5.15.0-88-generic
  • Kubernetes：v1.28.8
  • Containerd：1.7.13
  • KubeKey：v3.1.6

Host解析

hostnamectl set-hostname k8s-master01
# cat /etc/hosts

192.168.77.131 k8s-master01
192.168.77.132 k8s-node01
192.168.77.133 k8s-node02

Chrony时间同步

apt-get install -y chrony

k8s-master01 做chrony主

sed -i.bak 's/^\(pool.*\)/#\1/g' /etc/chrony/chrony.conf
sed -i '0,/^#pool.*/{s//pool ntp1.aliyun.com iburst\n&/}' /etc/chrony/chrony.conf
systemctl enable chrony
systemctl restart chrony
# 验证
chronyc sourcestats -v

root@k8s-master01:~# grep ^pool /etc/chrony/chrony.conf
pool ntp1.aliyun.com iburst

k8s-node01 k8s-node02s 指向k8s-master01

sed -i.bak 's/^\(pool.*\)/#\1/g' /etc/chrony/chrony.conf
sed -i '0,/^#pool.*/{s//pool 192.168.77.131 iburst\n&/}' /etc/chrony/chrony.conf
systemctl enable chrony
systemctl restart chrony

# 验证
chronyc sourcestats -v

系统配置

ufw disable
timedatectl set-timezone Asia/Shanghai
timedatectl set-local-rtc 0
swapoff -a
sed -i '/swap/s/^\(.*\)$/#\1/g' /etc/fstab

sed -i 's#http://.*.ubuntu.com#http://mirrors.aliyun.com#g' /etc/apt/sources.list
apt-get update

关闭主机systemd-resolve 53端口

sed -i 's/^#\?DNSStubListener=.*/DNSStubListener=no/' /etc/systemd/resolved.conf
ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
systemctl restart systemd-resolved.service

安装依赖

apt-get install -y curl socat conntrack ebtables ipset ipvsadm bash-completion

Sudo免密码

update-alternatives --config editor  #选择3 vim.basic
visudo # 添加
sunday  ALL=(ALL:ALL) NOPASSWD:ALL

SSH免密码

root@k8s-master01:~# ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa
Your public key has been saved in /root/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:AfQnEmRagGWhrOKZVUHcSNh/iGbpmc0KDMlwmQSP9Mk root@k8s-master01
The key's randomart image is:
+---[RSA 3072]----+
|.+.=@OX          |
|o+B+.B.=         |
|+.=E..= = .      |
| =  .= + =       |
|o o.+ = S        |
|o +o + o         |
| +  . .          |
|     .           |
|                 |
+----[SHA256]-----+

root@k8s-master01:~# ssh-copy-id sunday@k8s-master01
root@k8s-master01:~# ssh-copy-id sunday@k8s-node01
root@k8s-master01:~# ssh-copy-id sunday@k8s-node02

下载KubeKey

export KKZONE=cn
curl -sfL https://get-kk.kubesphere.io | sh -

查看 KubeKey 支持的 Kubernetes 版本列表

./kk version --show-supported-k8s
./kk create config --with-kubernetes v1.28.8

注：密钥不支持sudo，目前只能用password

root@k8s-master01:~# vim config-sample.yaml

apiVersion: kubekey.kubesphere.io/v1alpha2
kind: Cluster
metadata:
  name: sundayhk
spec:
  hosts:
  - {name: k8s-master01, address: 192.168.77.131, internalAddress: 192.168.77.131, user: sunday, password: "password"}
  - {name: k8s-node01, address: 192.168.77.132, internalAddress: 192.168.77.132, user: sunday, password: "password"}
  - {name: k8s-node02, address: 192.168.77.133, internalAddress: 192.168.77.133, user: sunday, password: "password"}
  #- {name: k8s-node02, address: 192.168.77.133, internalAddress: 192.168.77.133, user: sunday, privateKeyPath: "~/.ssh/id_rsa"}

  roleGroups:
    etcd:
    - k8s-master01
    control-plane: 
    - k8s-master01
    worker:
    - k8s-node01
    - k8s-node02
  controlPlaneEndpoint:
    ## Internal loadbalancer for apiservers 
    # internalLoadbalancer: haproxy

    domain: lb.kubesphere.local
    address: ""
    port: 6443
  kubernetes:
    version: v1.28.8
    clusterName: cluster.local
    autoRenewCerts: true
    containerManager: containerd
  etcd:
    type: kubekey
  network:
    plugin: calico
    kubePodsCIDR: 10.233.64.0/18
    kubeServiceCIDR: 10.233.0.0/18
    ## multus support. https://github.com/k8snetworkplumbingwg/multus-cni
    multusCNI:
      enabled: false
  registry:
    privateRegistry: ""
    namespaceOverride: ""
    registryMirrors: []
    insecureRegistries: []
  addons: []
./kk create cluster -f config-sample.yaml
root@k8s-master01:~# ./kk create cluster -f config-sample.yaml

 _   __      _          _   __           
| | / /     | |        | | / /           
| |/ / _   _| |__   ___| |/ /  ___ _   _ 
|    \| | | | '_ \ / _ \    \ / _ \ | | |
| |\  \ |_| | |_) |  __/ |\  \  __/ |_| |
\_| \_/\__,_|_.__/ \___\_| \_/\___|\__, |
                                    __/ |
                                   |___/

15:46:31 CST [GreetingsModule] Greetings
15:46:32 CST message: [k8s-node02]
Greetings, KubeKey!
15:46:33 CST message: [k8s-master01]
Greetings, KubeKey!
15:46:34 CST message: [k8s-node01]
Greetings, KubeKey!
15:46:34 CST success: [k8s-node02]
15:46:34 CST success: [k8s-master01]
15:46:34 CST success: [k8s-node01]
15:46:34 CST [NodePreCheckModule] A pre-check on nodes
15:46:35 CST success: [k8s-node02]
15:46:35 CST success: [k8s-master01]
15:46:35 CST success: [k8s-node01]
15:46:35 CST [ConfirmModule] Display confirmation form
+-------------+------+------+---------+----------+-------+-------+---------+-----------+--------+--------+------------+------------+-------------+------------------+--------------+
| name        | sudo | curl | openssl | ebtables | socat | ipset | ipvsadm | conntrack | chrony | docker | containerd | nfs client | ceph client | glusterfs client | time         |
+-------------+------+------+---------+----------+-------+-------+---------+-----------+--------+--------+------------+------------+-------------+------------------+--------------+
| k8s-master01 | y    | y    | y       | y        | y     | y     | y       | y         | y      |        |            |            |             |                  | CST 15:46:35 |
| k8s-node01   | y    | y    | y       | y        | y     | y     | y       | y         | y      |        |            |            |             |                  | CST 15:46:35 |
| k8s-node02   | y    | y    | y       | y        | y     | y     | y       | y         | y      |        |            |            |             |                  | CST 15:46:35 |
+-------------+------+------+---------+----------+-------+-------+---------+-----------+--------+--------+------------+------------+-------------+------------------+--------------+

This is a simple check of your environment.
Before installation, ensure that your machines meet all requirements specified at
https://github.com/kubesphere/kubekey#requirements-and-recommendations

Install k8s with specify version:  v1.28.8
Continue this installation? [yes/no]: yes
15:46:55 CST success: [LocalHost]
15:46:55 CST [NodeBinariesModule] Download installation binaries
15:46:55 CST message: [localhost]
downloading amd64 kubeadm v1.28.8 ...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 46.0M  100 46.0M    0     0  2273k      0  0:00:20  0:00:20 --:--:-- 2631k
15:47:16 CST message: [localhost]
...
15:53:48 CST success: [k8s-master01]
15:53:48 CST [ConfigureKubernetesModule] Configure kubernetes
15:53:48 CST success: [k8s-master01]
15:53:48 CST [ChownModule] Chown user $HOME/.kube dir
15:53:49 CST success: [k8s-node01]
15:53:49 CST success: [k8s-node02]
15:53:49 CST success: [k8s-master01]
15:53:49 CST [AutoRenewCertsModule] Generate k8s certs renew script
15:53:49 CST success: [k8s-master01]
15:53:49 CST [AutoRenewCertsModule] Generate k8s certs renew service
15:53:49 CST success: [k8s-master01]
15:53:49 CST [AutoRenewCertsModule] Generate k8s certs renew timer
15:53:50 CST success: [k8s-master01]
15:53:50 CST [AutoRenewCertsModule] Enable k8s certs renew service
15:53:51 CST success: [k8s-master01]
15:53:51 CST [SaveKubeConfigModule] Save kube config as a configmap
15:53:51 CST success: [LocalHost]
15:53:51 CST [AddonsModule] Install addons
15:53:51 CST message: [LocalHost]
[0/0] enabled addons
15:53:51 CST success: [LocalHost]
15:53:51 CST Pipeline[CreateClusterPipeline] execute successfully
Installation is complete.

Please check the result using the command:

    kubectl get pod -A
root@k8s-master01:~# kubectl get pod -A
NAMESPACE     NAME                                       READY   STATUS    RESTARTS   AGE
kube-system   calico-kube-controllers-7bbcc5b6fb-zn6qm   1/1     Running   0          29m
kube-system   calico-node-cd8x2                          1/1     Running   0          29m
kube-system   calico-node-wh4qq                          1/1     Running   0          29m
kube-system   calico-node-x4hdc                          1/1     Running   0          29m
kube-system   coredns-64568965-btwct                     1/1     Running   0          29m
kube-system   coredns-64568965-gzk97                     1/1     Running   0          29m
kube-system   kube-apiserver-k8s-master01                 1/1     Running   0          30m
kube-system   kube-controller-manager-k8s-master01        1/1     Running   0          30m
kube-system   kube-proxy-9rl7t                           1/1     Running   0          29m
kube-system   kube-proxy-bwsqx                           1/1     Running   0          29m
kube-system   kube-proxy-gtt2s                           1/1     Running   0          29m
kube-system   kube-scheduler-k8s-master01                 1/1     Running   0          30m
kube-system   nodelocaldns-b4hlg                         1/1     Running   0          29m
kube-system   nodelocaldns-csqjx                         1/1     Running   0          29m
kube-system   nodelocaldns-rwtpk                         1/1     Running   0          29m

root@k8s-master01:~# kubectl get node
NAME          STATUS   ROLES           AGE   VERSION
k8s-master01   Ready    control-plane   29m   v1.28.8
k8s-node01     Ready    worker          29m   v1.28.8
k8s-node02     Ready    worker          29m   v1.28.8

https://kubesphere.io/zh/docs/v3.4/installing-on-linux/introduction/multioverview/
https://kubesphere.io/zh/blogs/breaching-docker-image-limits-to-deploy-kubesphere-3.4.1/

sunday
Kubernetes
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