k8s部署1.27.4

集群安装
安装 docker
安装 docker-compose
安装 cri-dockerd
配置 K8S 基础环境
安装 harbor 镜像仓库
安装 kubelet、kubeadm、kubectl
使用 kubeadm 引导安装 k8s 集群
1. 下载镜像
2. master 节点初始化
3. node 节点加入集群
4. 权限操作
命令补全
安装网络插件
安装 calico
1. 安装 helm
2. 下载 calico
安装 fannel
常用命令
参考文档

集群安装

操作系统

服务器版本：CentOS7.x-86_x64

硬件配置

主节点 master 192.168.2.100
节点1 node1 192.168.2.101
节点2 node2 192.168.2.102
中间件服务器 middle（harbor等等）192.168.2.103

服务器要求

在开始之前，部署Kubernetes集群机器需要满足以下几个条件：

一台或多台机器，操作系统 CentOS7.x-86_x64

硬件配置：2GB或更多RAM，2核CPU或更多CPU，硬盘30GB或更多

可以访问外网，需要拉取镜像，如果服务器不能上网，需要提前下载镜像并导入节点

安装 `docker`

注意：所有主机操作

参考文档
http://haimait.top/docs/k8s/docker-install

安装 `docker-compose`

注意：所有主机操作

参考文档
http://haimait.top/docs/k8s/docker-compose

安装 `cri-dockerd`

注意：所有主机操作

获取软件

下载软件
mkdir /data/softs && cd /data/softs
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.2/cri-dockerd-0.3.2.amd64.tgz

解压软件
tar xf cri-dockerd-0.3.2.amd64.tgz
mv cri-dockerd/cri-dockerd /usr/local/bin/

检查效果
[root@master softs]# cri-dockerd --version
cri-dockerd 0.3.2 (23513f4c)

定制配置

定制配置文件
cat > /etc/systemd/system/cri-dockerd.service<<-EOF
[Unit]
Description=CRI Interface for Docker Application Container Engine
Documentation=https://docs.mirantis.com
After=network-online.target firewalld.service docker.service
Wants=network-online.target
[Service]
Type=notify
#注意这里的镜像地址要能pull到镜像
ExecStart=/usr/local/bin/cri-dockerd --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.9
--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin -
-container-runtime-endpoint=unix:///var/run/cri-dockerd.sock --cri-dockerd-rootdirectory=/var/lib/dockershim --docker-endpoint=unix:///var/run/docker.sock --
cri-dockerd-root-directory=/var/lib/docker
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
EOF

定制配置
cat > /etc/systemd/system/cri-dockerd.socket <<-EOF
[Unit]
Description=CRI Docker Socket for the API
PartOf=cri-docker.service
[Socket]
ListenStream=/var/run/cri-dockerd.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker
[Install]
WantedBy=sockets.target
EOF

设置服务开机自启动
systemctl daemon-reload
systemctl enable cri-dockerd.service
systemctl restart cri-dockerd.service
systemctl is-active cri-dockerd

配置 `K8S` 基础环境

所有机器执行以下操作

# 每个节点分别设置对应主机名
hostnamectl set-hostname master
hostnamectl set-hostname node1
hostnamectl set-hostname node2
hostnamectl set-hostname middle

# 查看主机名
hostname

# 所有节点都修改 hosts 以自己服务器的ip为准
cat >> /etc/hosts << EOF
192.168.2.100 master
192.168.2.101 node1
192.168.2.102 node2
192.168.2.103 harbor.top middle
127.0.0.1 localhost
EOF


## 同步系统时间
yum install ntpdate -y
/usr/sbin/ntpdate -u pool.ntp.org

打开定时任务
crontab -e

写入下面任务
*/10 * * * * /usr/sbin/ntpdate -u pool.ntp.org

看时间
date

# 将 SELinux 设置为 permissive 模式（相当于将其禁用）
setenforce 0
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config


### 关闭swap 禁止swap分区

swapoff -a  
sed -i "s/\/dev\/mapper\/centos-swap/\#\/dev\/mapper\/centos-swap/g" /etc/fstab


#允许 iptables 检查桥接流量
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
br_netfilter
EOF

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

sudo sysctl --system


# 所有节点确保防火墙关闭
systemctl stop firewalld
systemctl disable firewalld

# 检查防火墙状态
firewall-cmd --state

# 关闭规则
systemctl stop iptables
systemctl disable iptables
systemctl status iptables


### 配置节点间ssh免密码登录(可以跳过)

配置ssh互信，那么节点之间就能无密访问，方便日后执行自动化部署

# 在master主节点上执行
ssh-keygen     # 每台机器执行这个命令， 一路回车即可
ssh-copy-id  node1     # 要主节点上执行从master上拷贝公钥到其他node1节点(这里node1为从节点的主机名,也可以写ip地址)，这里需要输入 yes和密码
# 从主节登陆到从节点
ssh node1

# 在node1从节点上执行
ssh-keygen
ssh-copy-id  master     # 从node1上拷贝公钥到其他master节点这里需要输入 yes和密码
# 在从节点上登录到主节点
ssh master

安装 `harbor` 镜像仓库

注意：只安装中间件主机 middle

参考文档
http://haimait.top/docs/k8s/harbor

安装 `kubelet`、`kubeadm`、`kubectl`

master、node1、node2 机器执行以下操作

定制阿里云的关于kubernetes的软件源
# cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg 
https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

# 更新软件源
yum makecache fast

# 环境软件部署
yum install kubeadm kubectl kubelet -y

# 或者是指定版本安装 和上面的只要执行一个就行
 yum install -y kubelet-1.27.4 kubeadm-1.27.4 kubectl-1.27.4 --disableexcludes=kubernetes


## 启动 kubelet、docker，并设置开机启动（所有节点）
#重新加载服务的配置文件
systemctl daemon-reload
systemctl start kubelet
systemctl enable kubelet
systemctl status kubelet

systemctl restart kubelet（跳过）

# 查看版本
kubelet --version # v1.27.4
kubectl version   # v1.27.4
kubeadm version   # v1.27.4

[root@master flannel]# kubectl version --short
Flag --short has been deprecated, and will be removed in the future. The --short output will become the default.
Client Version: v1.27.4
Kustomize Version: v5.0.1
Server Version: v1.27.3

使用 `kubeadm` 引导安装 `k8s` 集群

注意：只在 master 主机操作

1. 下载镜像

步骤：
下载镜像 –> 修改镜像名 –> push 到镜像仓库

新建项目
打开浏览器登录 http://192.168.2.103/harbor/projects
新建项目 google_containers 权限公开

检查镜像文件列表
[root@master ~]# kubeadm config images list
registry.k8s.io/kube-apiserver:v1.27.4
registry.k8s.io/kube-controller-manager:v1.27.4
registry.k8s.io/kube-scheduler:v1.27.4
registry.k8s.io/kube-proxy:v1.27.4
registry.k8s.io/pause:3.9
registry.k8s.io/etcd:3.5.7-0
registry.k8s.io/coredns/coredns:v1.10.1


# 步骤：获取镜像文件 -> 修改名称 -> 推送到 harbor 仓库 -> 删除本地下载的阿里云 tag 的镜像
# 获取镜像名称赋值给images
images=$(kubeadm config images list --kubernetes-version=1.27.3 | awk -F "/" '{print $NF}')

# 从aliyum仓库拉镜像
for i in ${images}
do
 docker pull registry.aliyuncs.com/google_containers/$i
 docker tag registry.aliyuncs.com/google_containers/$i harbor.top/google_containers/$i
 docker push harbor.top/google_containers/$i
 docker rmi registry.aliyuncs.com/google_containers/$i
done

2. `master` 节点初始化

环境初始化命令
kubeadm init --kubernetes-version=1.27.3 \
--apiserver-advertise-address=192.168.2.100 \
--image-repository harbor.top/google_containers \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--ignore-preflight-errors=Swap \
--cri-socket=unix:///var/run/cri-dockerd.sock

注释说明

--apiserver-advertise-address  # `master` 主机节点的 `ip`
--service-cidr： # service ip段
--pod-network-cidr # pod ip段

成功返回结果

Your Kubernetes control-plane has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

Alternatively, if you are the root user, you can run:

  export KUBECONFIG=/etc/kubernetes/admin.conf

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 192.168.2.100:6443 --token g7ih9b.mz7smax3vwbnxi5v \
        --discovery-token-ca-cert-hash sha256:9740cb924bb78cb91864c41e50a39187676cbb7a92a014b9b8b743513c6df409

上面kubeadm join 192.168.2.100:6443 --token 09umch.j47h1kyxx44znbtc ... 就是把工作节点(从节点)加到master主节点的token(24小时内有效)

3. `node` 节点加入集群

注意后面加 --cri-socket=unix:///var/run/cri-dockerd.sock

成功返回结果

[root@node1 ~]# kubeadm join 192.168.2.100:6443 --token g7ih9b.mz7smax3vwbnxi5v --discovery-token-ca-cert-hash sha256:9740cb924bb78cb91864c41e50a39187676cbb7a92a014b9b8b743513c6df409 --cri-socket=unix:///var/run/cri-dockerd.sock
[preflight] Running pre-flight checks
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Starting the kubelet
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...

This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.

Run 'kubectl get nodes' on the control-plane to see this node join the cluster.

如果报错，想要重置

# 失败了可以用 kubeadm reset 重置
# 重新初始化
kubeadm reset # 先重置

# 删除yaml
rm -rf  /etc/kubernetes/manifests/kube-apiserver.yaml  /etc/kubernetes/manifests/kube-controller-manager.yaml /etc/kubernetes/manifests/kube-scheduler.yaml /etc/kubernetes/manifests/etcd.yaml 

#重新初使化
kubeadm init --kubernetes-version=1.27.3 \
--apiserver-advertise-address=192.168.2.100 \
--image-repository harbor.top/google_containers \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--ignore-preflight-errors=Swap \
--cri-socket=unix:///var/run/cri-dockerd.sock

# 查看日志
journalctl -xeu kubelet
journalctl -fu kubelet

# 解决：k8s[kubelet-check] The HTTP call equal to ‘curl -sSL http://localhost:10248/healthz’ failed with
# 参考:
# https://blog.csdn.net/leisurelen/article/details/117392370

初使化其它报错记录

报错一:
你这个错误 curl -sSL http://localhost:10248/healthz，本地配host了么
解决:配置本地hosts
127.0.0.1 localhost

报错二:
7月 03 17:41:45 master kubelet[115473]: E0703 17:41:45.730879  115473 kubelet.go:2183] Container runtime network not ready: NetworkReady=false reason:NetworkPluginNotRe
7月 03 17:41:50 master kubelet[115473]: W0703 17:41:50.460817  115473 cni.go:239] Unable to update cni config: no networks found in /etc/cni/net.d
解决方法:
docker pull quay.io/coreos/flannel:v0.10.0-amd64 
mkdir -p /etc/cni/net.d/
cat <<EOF> /etc/cni/net.d/10-flannel.conf
{"name":"cbr0","type":"flannel","delegate": {"isDefaultGateway": true}}
EOF
mkdir /usr/share/oci-umount/oci-umount.d -p
mkdir /run/flannel/
cat <<EOF> /run/flannel/subnet.env
FLANNEL_NETWORK=172.100.0.0/16
FLANNEL_SUBNET=172.100.1.0/24
FLANNEL_MTU=1450
FLANNEL_IPMASQ=true
EOF
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.9.1/Documentation/kube-flannel.yml

报错三:
The connection to the server localhost:8080 was refused - did you specify the right host or port?
解决:
原因：kubernetes master没有与本机绑定，集群初始化的时候没有绑定，此时设置在本机的环境变量即可解决问题。
source /etc/profile
echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> /etc/profile

报错四:
初始化K8S master时报错

The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp [::1]:10248: connect: connection refused.

或者一直报下面的错

7月 05 00:36:34 master kubelet[106102]: E0705 00:36:34.627900  106102 controller.go:144] failed to ensure lease exists, will retry in 200ms, error: Get "https://192.168.2.100:6443/apis/coordination.k8s.io/v1/namespaces/kube-node-lease/leases/master?timeout=10s": dial tcp 192.168.2.100:6443: connect: connection refused


解决 参考下面的连接:
原文链接：https://blog.csdn.net/qq_26129413/article/details/122207954

我正好相反,我把`"exec-opts": ["native.cgroupdriver=systemd"]` 从 `vim /etc/docker/daemon.json` 里删除,
再重启docker
sudo systemctl daemon-reload
sudo systemctl restart docker
systemctl status docker
docker info
然后再

返回这个成功

[addons] Applied essential addon: kube-proxy

Your Kubernetes control-plane has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

Alternatively, if you are the root user, you can run:

  export KUBECONFIG=/etc/kubernetes/admin.conf

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 192.168.0.111:6443 --token pgshih.lqxd8nxo0stohgzt \
    --discovery-token-ca-cert-hash sha256:39b46cd80f5810e06fa255debf442d5a5880f97fdb2ca1b48a680c42cee36a48

4. 权限操作

主节点 master 节点操作

定制 kubernetes 的登录权限

mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

新令牌如果 token 失效后，可以使用下的命令重新生成
kubeadm token create –print-join-command

查看是否成功

[root@master manifests]# kubectl get node
NAME     STATUS     ROLES           AGE   VERSION
master   NotReady   control-plane   14h   v1.27.4
node1    NotReady   <none>          14h   v1.27.4
node2    NotReady   <none>          39s   v1.27.4

至此:
master 节点的 k8s 已经安装成功
node1 和 node2 也已经加入到 master 节点

命令补全

在 master 主机中执行

echo "source <(kubectl completion bash)" >> ~/.bashrc
echo "source <(kubeadm completion bash)" >> ~/.bashrc
echo "alias k='kubectl'" >> ~/.bashrc
source ~/.bashrc

注意

确认以下三个服务是运行的 这样重启master或者node服务器，才能正常恢复集群
[root@master flannel]# systemctl is-active kubelet cri-dockerd docker
active
active
active

确认以下三个服务是开机自动运行的，执行以下命令，没有提示就表示是开机运行
[root@master flannel]# systemctl enable kubelet cri-dockerd docker
[root@master flannel]#

安装网络插件

calico 或者 flannel ，选择其中一个安装即可
注意：只在 master 服务器上安装即可

安装 `calico`

这里使用 helm 方式安装 calico

1. 安装 `helm`

下载列表
https://github.com/helm/helm/releases

下载 Linux arm64 二进制包
Linux amd64 (checksum / 2b6efaa009891d3703869f4be80ab86faa33fa83d9d5ff2f6492a8aebe97b219)

tar -zxvf helm-v3.12.2-linux-amd64.tar.gz
mv linux-amd64/helm /usr/local/bin/
## 查看是否生效
helm list

2. 下载 `calico`

下载列表
https://github.com/projectcalico/calico/releases

下载 Linux arm64 二进制包

Linux amd64

安装 calico


[root@master softs]# helm install calico ./tigera-operator-v3.26.1.tgz -n kube-system
NAME: calico
LAST DEPLOYED: Thu Aug 10 02:06:48 2023
NAMESPACE: kube-system
STATUS: deployed
REVISION: 1
TEST SUITE: None

# 查看节点状态
[root@master ~]# kubectl get nodes
NAME     STATUS   ROLES           AGE     VERSION
master   Ready    control-plane   2d14h   v1.27.4
node1    Ready    <none>          2d14h   v1.27.4
node2    Ready    <none>          2d      v1.27.4

# 查看pod状态
[root@master ~]# kubectl get pod -A
NAMESPACE          NAME                                      READY   STATUS    RESTARTS      AGE
calico-apiserver   calico-apiserver-845d74c84c-kvj68         1/1     Running   0             9m16s
calico-apiserver   calico-apiserver-845d74c84c-rgz64         1/1     Running   0             9m16s
calico-system      calico-kube-controllers-55fb6f474-vx7lg   1/1     Running   3 (10m ago)   20h
calico-system      calico-node-5gqbp                         1/1     Running   1 (15h ago)   20h
calico-system      calico-node-nl8g7                         1/1     Running   3 (13m ago)   20h
calico-system      calico-node-qmp8t                         1/1     Running   0             13m
calico-system      calico-typha-7fb75cc495-5lzvc             1/1     Running   4 (11m ago)   20h
calico-system      calico-typha-7fb75cc495-p895k             1/1     Running   4 (12m ago)   20h
calico-system      csi-node-driver-77n4n                     2/2     Running   2 (15h ago)   20h
calico-system      csi-node-driver-km9kr                     2/2     Running   0             20h
calico-system      csi-node-driver-zk8nw                     2/2     Running   4 (13m ago)   20h
kube-system        coredns-7d5ccbb94b-5xmh5                  1/1     Running   2 (13m ago)   2d14h
kube-system        coredns-7d5ccbb94b-mhqc5                  1/1     Running   2 (13m ago)   2d14h
kube-system        etcd-master                               1/1     Running   2 (13m ago)   2d14h
kube-system        kube-apiserver-master                     1/1     Running   2 (13m ago)   2d14h
kube-system        kube-controller-manager-master            1/1     Running   4 (13m ago)   2d14h
kube-system        kube-proxy-572fm                          1/1     Running   2 (13m ago)   2d14h
kube-system        kube-proxy-5wmv4                          1/1     Running   2 (20h ago)   2d
kube-system        kube-proxy-9zf2x                          1/1     Running   3 (14m ago)   2d14h
kube-system        kube-scheduler-master                     1/1     Running   4 (13m ago)   2d14h
kube-system        tigera-operator-5f4668786-mdvv5           1/1     Running   4 (12m ago)   20h

安装 `fannel`

注意：只在 master 服务器上安装即可

1. 新建目录
mkdir -p /data/softs/flannel && cd /data/softs/flannel

2. 下载 yml 文件
wget https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
或者
wget https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml


3. 下载镜像-> 重新打tag -> 推送镜像到仓库
for i in $(grep image kube-flannel.yml | grep -v '#' | awk -F '/' '{print $NF}')
do
 docker pull flannel/$i
 docker tag flannel/$i harbor.top/google_containers/$i
 docker push harbor.top/google_containers/$i
 docker rmi flannel/$i
done

4. 备份配置文件
cp kube-flannel.yml{,.bak}

5. 修改配置文件 
把 kube-flannel.yml 中的镜像地址 docker.io/flannel 替换成 harbor.top/google_containers

执行下面的命令
sed -i '/ image:/s/docker.io\/flannel/harbor.top\/google_containers/' kube-flannel.yml

查看修改的配置
[root@master flannel]# grep image kube-flannel.yml
        image: harbor.top/google_containers/flannel-cni-plugin:v1.2.0
        image: harbor.top/google_containers/flannel:v0.22.1
        image: harbor.top/google_containers/flannel:v0.22.1

6. 应用配置文件
[root@master flannel]# kubectl apply -f kube-flannel.yml
namespace/kube-flannel created
clusterrole.rbac.authorization.k8s.io/flannel created
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
daemonset.apps/kube-flannel-ds created

7. 检查效果
[root@master flannel]# kubectl get namespace
NAME              STATUS   AGE
default           Active   17h
kube-flannel      Active   11s
kube-node-lease   Active   17h
kube-public       Active   17h
kube-system       Active   17h

[root@master flannel]# kubectl get pod -n kube-flannel
NAME                    READY   STATUS     RESTARTS   AGE
kube-flannel-ds-dzgfg   0/1     Init:0/2   0          44s
kube-flannel-ds-q6dhk   0/1     Init:0/2   0          44s
kube-flannel-ds-wdtpw   1/1     Running    0          44s

[root@master flannel]# kubectl get po -A
NAMESPACE      NAME                             READY   STATUS    RESTARTS   AGE
kube-flannel   kube-flannel-ds-74wph            1/1     Running   0          2m13s
kube-flannel   kube-flannel-ds-9gz7p            1/1     Running   0          2m13s
kube-flannel   kube-flannel-ds-vfhrc            1/1     Running   0          2m13s
kube-system    coredns-7d5ccbb94b-rqt7g         1/1     Running   0          9m32s
kube-system    coredns-7d5ccbb94b-w6scb         1/1     Running   0          9m32s
kube-system    etcd-master                      1/1     Running   0          9m45s
kube-system    kube-apiserver-master            1/1     Running   0          9m45s
kube-system    kube-controller-manager-master   1/1     Running   0          9m45s
kube-system    kube-proxy-gqv8c                 1/1     Running   0          7m54s
kube-system    kube-proxy-rgbpl                 1/1     Running   0          9m33s
kube-system    kube-proxy-w9rdp                 1/1     Running   0          7m56s
kube-system    kube-scheduler-master            1/1     Running   0          9m45s


[root@master flannel]# k get nodes
NAME     STATUS   ROLES           AGE   VERSION
master   Ready    control-plane   23h   v1.27.4
node1    Ready    <none>          23h   v1.27.4
node2    Ready    <none>          9h    v1.27.4


关闭 flannel 服务 跳过
kebuctl delete -f kube-flannel.yml

至此已经安装完成

常用命令

master 上使执行

# 查看集群所有节点
kubectl get nodes

# 根据配置文件，给集群创建资源
kubectl apply -f xxxx.yaml

# 查看集群部署了哪些应用？ 相当于 docker ps 
# 运行中的应用在docker里面叫容器，在k8s里面叫Pod
kubectl get pods -A 

# 每一秒刷新一次
watch -n 1 kubectl get pod -A 

# 查看pod详情
kubectl describe pod  calico-node-rsmm8 --namespace=kube-system
kubectl describe pod  calico-kube-controllers-5cdbdf5595-dxnzd --namespace=kube-system

# 查看证书有效期
[root@k8s-master ~]# openssl x509 -in /etc/kubernetes/pki/apiserver.crt -noout -text | grep ' Not '
            Not Before: Sep 23 06:46:53 2022 GMT
            Not After : Sep 23 06:46:53 2023 GMT
[root@k8s-master ~]# kubeadm certs check-expiration
[check-expiration] Reading configuration from the cluster...
[check-expiration] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'

CERTIFICATE                EXPIRES                  RESIDUAL TIME   CERTIFICATE AUTHORITY   EXTERNALLY MANAGED
admin.conf                 Sep 23, 2023 06:46 UTC   44d                                     no      
apiserver                  Sep 23, 2023 06:46 UTC   44d             ca                      no      
apiserver-kubelet-client   Sep 23, 2023 06:46 UTC   44d             ca                      no      
controller-manager.conf    Sep 23, 2023 06:46 UTC   44d                                     no      
front-proxy-client         Sep 23, 2023 06:46 UTC   44d             front-proxy-ca          no      
scheduler.conf             Sep 23, 2023 06:46 UTC   44d                                     no      

CERTIFICATE AUTHORITY   EXPIRES                  RESIDUAL TIME   EXTERNALLY MANAGED
ca                      Sep 20, 2032 06:46 UTC   9y              no      
front-proxy-ca          Sep 20, 2032 06:46 UTC   9y              no

参考文档

官方文档

https://kubernetes.io/zh-cn/docs/concepts/overview/components/#node-components

王树林：无废话纯享版视频地址：
https://www.bilibili.com/video/BV1Ah4y1L7TY?p=11

安装参考文档:
尚硅谷
https://www.yuque.com/leifengyang/oncloud/ghnb83
https://www.bilibili.com/video/BV13Q4y1C7hS?p=32&spm_id_from=pageDriver&vd_source=a68414cd60fe26e829ce1cdd4d75a9e6

易文档:
https://k8s.easydoc.net/docs/dRiQjyTY/28366845/6GiNOzyZ/9EX8Cp45

作者：海马创建时间：2023-07-09 11:01
最后编辑：海马更新时间：2024-08-03 21:41

k8s部署1.27.4

集群安装

安装 docker

安装 docker-compose

安装 cri-dockerd

配置 K8S 基础环境

安装 harbor 镜像仓库

安装 kubelet、kubeadm、kubectl

使用 kubeadm 引导安装 k8s 集群

1. 下载镜像

2. master 节点初始化

3. node 节点加入集群

4. 权限操作

命令补全

安装网络插件

安装 calico

1. 安装 helm

2. 下载 calico

安装 fannel

常用命令

参考文档

安装 `docker`

安装 `docker-compose`

安装 `cri-dockerd`

配置 `K8S` 基础环境

安装 `harbor` 镜像仓库

安装 `kubelet`、`kubeadm`、`kubectl`

使用 `kubeadm` 引导安装 `k8s` 集群

2. `master` 节点初始化

3. `node` 节点加入集群

安装 `calico`

1. 安装 `helm`

2. 下载 `calico`

安装 `fannel`