k8s部署官方提供了kind、minikube、kubeadmin等多种安装方式。
其中minikube安装在之前的文章中已经介绍过，部署比较简单。下面介绍通过kubeadmin部署k8s集群。
生产中提供了多种高可用方案：
k8s官方文档
本文安装的是1.28.0版本。
建议去认真阅读一下官方文档，下面的操作基本是出自官方文档。
1、环境准备
三台centos7虚拟机:2核4G（官网最低要求2核2G）
内核版本：
uname -r
| 角色 | ip | 主机名 |
|---|---|---|
| master | 192.168.213.9 | k8s-kubeadmin-1 |
| node1 | 192.168.213.10 | k8s-kubeadmin-2 |
| node2 | 192.168.213.11 | k8s-kubeadmin-3 |
在三台虚拟机中修改hosts文件：
确保可以通过主机名ping通对方。
修改主机名：
查看：
hostname
修改：
sudo hostnamectl set-hostname k8s-kubeadmin-1
2、安装
2.1、所有节点操作：关闭防火墙
关闭防火墙，免得要配置开放端口，不想关闭也行，不怕麻烦的话，可以参考我之前的博客去设置开放防火墙端口。
systemctl stop firewalld #停止防火墙
systemctl disable firewalld #设置开机不启动
2.2、所有节点操作：禁用selinux
# 将 SELinux 设置为 permissive 模式（相当于将其禁用）
sudo setenforce 0
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
或者设置为SELINUX=disabled
2.3、所有节点操作：关闭swap分区
#永久禁用swap,删除或注释掉/etc/fstab里的swap设备的挂载命令即可
nano /etc/fstab
#/dev/mapper/centos-swap swap swap defaults 0 0
重启：
reboot
2.4、所有节点操作：设置同步时间
yum -y install ntp
systemctl start ntpd
systemctl enable ntpd
2.5、所有节点操作：开启bridge-nf-call-iptalbes
在Kubernetes环境中，iptables和IPVS都用于实现网络流量转发和负载均衡，但它们在实现方式和功能上有一些区别。
iptables是Linux系统内置的一个工具，可以对流量进行过滤和转发，支持NAT等网络功能。在Kubernetes中，iptables主要用于实现Service的ClusterIP和NodePort类型。当Service为ClusterIP类型时，iptables会在节点上为每个Service IP添加一条规则，将流量转发到后端Pod的IP上。当Service为NodePort类型时，iptables会在每个节点上添加一条规则，将流量从宿主机的NodePort转发到Service IP上。
相比之下，IPVS（IP Virtual Server）是一个基于Linux内核实现的高性能负载均衡工具，可以在内核态对流量进行处理，支持多种负载均衡算法，并能够进行会话保持。在Kubernetes中，IPVS可以用于实现Service的负载均衡，相比于iptables，IPVS具有更高的性能和更多的负载均衡算法选择，可以更好地应对高流量和高并发的场景。IPVS代理使用iptables做数据包过滤、SNAT或伪装。
总结来说，iptables和IPVS在Kubernetes中都用于实现网络流量的转发和负载均衡。iptables更适用于实现基于Service的负载均衡，而IPVS则更适合于高性能、高并发的场景。在实际使用中，可以根据需求选择合适的工具。
执行以下指令：
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF
sudo modprobe overlay
sudo modprobe br_netfilter
# 设置所需的 sysctl 参数，参数在重新启动后保持不变
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
# 应用 sysctl 参数而不重新启动
sudo sysctl --system
通过运行以下指令确认 `br_netfilter` 和 `overlay` 模块被加载：
lsmod | grep br_netfilter
lsmod | grep overlay
通过运行以下指令确认 net.bridge.bridge-nf-call-iptables、net.bridge.bridge-nf-call-ip6tables 和 net.ipv4.ip_forward 系统变量在你的 sysctl 配置中被设置为 1：
sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
[root@k8s-kubeadmin-1 /]# sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
2.6、所有节点操作：安装容器运行时containerd
安装containerd：
yum install -y yum-utils
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum -y install containerd.io
生成config.toml配置
containerd config default > /etc/containerd/config.toml
配置 systemd cgroup 驱动：
在 /etc/containerd/config.toml 中设置
sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml
启动containerd 、开机自启动：
systemctl restart containerd && systemctl enable containerd
2.7、所有节点操作：k8s配置阿里云yum源
官网中配置的是国外的yum地址，速度较慢或者由于某些因素，所有配置为阿里云的yum源。
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[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
[root@k8s-kubeadmin-1 ~]# cd /etc/yum.repos.d
[root@k8s-kubeadmin-1 yum.repos.d]# ll
total 48
-rw-r--r--. 1 root root 1664 Nov 23 2020 CentOS-Base.repo
-rw-r--r--. 1 root root 1309 Nov 23 2020 CentOS-CR.repo
-rw-r--r--. 1 root root 649 Nov 23 2020 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root 314 Nov 23 2020 CentOS-fasttrack.repo
-rw-r--r--. 1 root root 630 Nov 23 2020 CentOS-Media.repo
-rw-r--r--. 1 root root 1331 Nov 23 2020 CentOS-Sources.repo
-rw-r--r--. 1 root root 8515 Nov 23 2020 CentOS-Vault.repo
-rw-r--r--. 1 root root 616 Nov 23 2020 CentOS-x86_64-kernel.repo
-rw-r--r--. 1 root root 1919 Nov 21 03:56 docker-ce.repo
-rw-r--r-- 1 root root 287 Nov 29 00:54 kubernetes.repo
[root@k8s-kubeadmin-1 yum.repos.d]#
安装docker：
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
启动：
sudo systemctl start docker
开机启动：
systemctl enable docker
配置阿里云镜像加速：
可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://e6sj15e9.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
2.8、所有节点操作：yum安装kubeadm、kubelet、kubectl
这是官网的安装：
删除历史安装：历史曾经安装过的可以执行，卸载重新安装。
yum -y remove kubelet kubeadm kubectl
访问查看阿里云上面的安装包详情：
https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
看到1.28.0版本比较新的，2023-08-16更新的，选用这个。安装时加上版本号：
yum install -y kubelet-1.28.0 kubeadm-1.28.0 kubectl-1.28.0 --disableexcludes=kubernetes
systemctl enable kubelet
2.9、查看所需的镜像
需要准备镜像。
可以进行自定义镜像等操作。我采用的的查询阿里加速镜像器中存在的，然后修改标签为它需要的。
kubeadm config images list
[root@k8s-kubeadmin-1 yum.repos.d]# kubeadm config images list
registry.k8s.io/kube-apiserver:v1.28.4
registry.k8s.io/kube-controller-manager:v1.28.4
registry.k8s.io/kube-scheduler:v1.28.4
registry.k8s.io/kube-proxy:v1.28.4
registry.k8s.io/pause:3.9
registry.k8s.io/etcd:3.5.9-0
registry.k8s.io/coredns/coredns:v1.10.1
这些依赖镜像是阿里云镜像中没有的。
[root@k8s-kubeadmin-1 yum.repos.d]# docker search registry.k8s.io/kube-apiserver:v1.28.4
Error response from daemon: Unexpected status code 404
所以下面的kubeadmin init命令很可能是成功不了的。
需要拉去阿里云上面的镜像下来，然后tag修改为它需求的镜像标签。
docker tag registry.aliyuncs.com/google_containers/kube-apiserver:v1.28.0 registry.k8s.io/kube-apiserver:v1.28.4
docker tag registry.aliyuncs.com/google_containers/kube-controller-manager:v1.28.0 registry.k8s.io/kube-controller-manager:v1.28.4
docker tag registry.aliyuncs.com/google_containers/kube-scheduler:v1.28.0 registry.k8s.io/kube-scheduler:v1.28.4
docker tag registry.aliyuncs.com/google_containers/kube-proxy:v1.28.0 registry.k8s.io/kube-proxy:v1.28.4
docker tag registry.aliyuncs.com/google_containers/etcd:3.5.9-0 registry.k8s.io/etcd:3.5.9-0
docker tag registry.aliyuncs.com/google_containers/coredns:v1.10.1 registry.k8s.io/coredns/coredns:v1.10.1
docker tag registry.aliyuncs.com/google_containers/pause:3.9 registry.k8s.io/pause:3.6
[root@k8s-kubeadmin-1 yum.repos.d]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
flannel/flannel v0.22.3 e23f7ca36333 2 months ago 70.2MB
registry.aliyuncs.com/google_containers/kube-apiserver v1.28.0 bb5e0dde9054 3 months ago 126MB
registry.k8s.io/kube-apiserver v1.28.4 bb5e0dde9054 3 months ago 126MB
registry.aliyuncs.com/google_containers/kube-scheduler v1.28.0 f6f496300a2a 3 months ago 60.1MB
registry.k8s.io/kube-scheduler v1.28.4 f6f496300a2a 3 months ago 60.1MB
registry.aliyuncs.com/google_containers/kube-controller-manager v1.28.0 4be79c38a4ba 3 months ago 122MB
registry.k8s.io/kube-controller-manager v1.28.4 4be79c38a4ba 3 months ago 122MB
registry.aliyuncs.com/google_containers/kube-proxy v1.28.0 ea1030da44aa 3 months ago 73.1MB
registry.k8s.io/kube-proxy v1.28.4 ea1030da44aa 3 months ago 73.1MB
flannel/flannel-cni-plugin v1.2.0 a55d1bad692b 4 months ago 8.04MB
registry.aliyuncs.com/google_containers/etcd 3.5.9-0 73deb9a3f702 6 months ago 294MB
registry.k8s.io/etcd 3.5.9-0 73deb9a3f702 6 months ago 294MB
registry.k8s.io/coredns/coredns v1.10.1 ead0a4a53df8 9 months ago 53.6MB
registry.aliyuncs.com/google_containers/coredns v1.10.1 ead0a4a53df8 9 months ago 53.6MB
registry.aliyuncs.com/google_containers/pause 3.9 e6f181688397 13 months ago 744kB
registry.k8s.io/pause 3.6 e6f181688397 13 months ago 744kB
registry.k8s.io/pause 3.9 e6f181688397 13 months ago 744kB
kubernetesui/dashboard latest 07655ddf2eeb 14 months ago 246MB
kubernetesui/dashboard v2.7.0 07655ddf2eeb 14 months ago 246MB
kubernetesui/metrics-scraper latest 421615ce8dbd 2 years ago 34.4MB
kubernetesui/metrics-scraper v1.0.8 421615ce8dbd 2 years ago 34.4MB
registry.aliyuncs.com/google_containers/kube-proxy v1.17.4 6dec7cfde1e5 3 years ago 116MB
registry.aliyuncs.com/google_containers/kube-apiserver v1.17.4 2e1ba57fe95a 3 years ago 171MB
registry.aliyuncs.com/google_containers/kube-controller-manager v1.17.4 7f997fcf3e94 3 years ago 161MB
registry.aliyuncs.com/google_containers/kube-scheduler v1.17.4 5db16c1c7aff 3 years ago 94.4MB
registry.aliyuncs.com/google_containers/coredns 1.6.5 70f311871ae1 4 years ago 41.6MB
registry.aliyuncs.com/google_containers/etcd 3.4.3-0 303ce5db0e90 4 years ago 288MB
registry.aliyuncs.com/google_containers/pause 3.1 da86e6ba6ca1 5 years ago 742kB
kubernetes/pause latest f9d5de079539 9 years ago 240kB
2.9、k8s-kubeadmin-1节点执行：安装master
kubeadm init \
--apiserver-advertise-address=192.168.213.9 \
--image-repository registry.aliyuncs.com/google_containers \
--kubernetes-version v1.28.0 \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--cri-socket=unix:///var/run/cri-dockerd.sock \
--v=5
由于上面容器运行时安装了containerd和Docker Engine（使用 cri-dockerd），所以需要指定cri-socket参数。
安装的过程中要是出错了，重新安装，需要重置 kubeadm 安装的状态：
kubeadm reset --cri-socket=unix:///var/run/cri-dockerd.sock
重置过程不会重置或清除 iptables 规则或 IPVS 表。如果希望重置 iptables，则必须手动进行：
iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
如果要重置 IPVS 表，则必须运行以下命令：
ipvsadm -C
our 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 192.168.213.9:6443 --token askdfkjsdfkljkldffj\
--discovery-token-ca-cert-hash sha256:kjlksjdfkasdkjflksdfljdfkdf
然后根据提示操作：
要使非 root 用户可以运行 kubectl，请运行以下命令， 它们也是 kubeadm init 输出的一部分：
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
或者，如果你是 root 用户，则可以运行：
export KUBECONFIG=/etc/kubernetes/admin.conf
这时执行：
kubectl get node
[root@k8s-kubeadmin-1 yum.repos.d]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-kubeadmin-1 NoReady control-plane 4h31m v1.28.0
子节点加入k8s-kubeadmin-1节点：
格式：
kubeadm join --token <token> <control-plane-host>:<control-plane-port> --discovery-token-ca-cert-hash sha256:<hash>
kubeadm join 192.168.213.9:6443 --token s5inwf.17rdxvhjalwyzj92 \
--discovery-token-ca-cert-hash sha256:ce85d2ceaea7311ac3e58ee355d34ee9235702e3415d43b84f78da682210ee09 \
--cri-socket=unix:///var/run/cri-dockerd.sock --v=5
有可能token过期了：
k8s-kubeadmin-1执行创建token:
kubeadm token create
会输出：
5didvk.d09sbcov8ph2amjw
如果你没有 --discovery-token-ca-cert-hash 的值，则可以通过在控制平面节点上执行以下命令链来获取它：
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | \
openssl dgst -sha256 -hex | sed 's/^.* //'
输出类似于以下内容：
8cb2de97839780a412b93877f8507ad6c94f73add17d5d7058e91741c9d5ec78
再执行：
kubectl get node
[root@k8s-kubeadmin-1 yum.repos.d]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-kubeadmin-1 NoReady control-plane 4h31m v1.28.0
k8s-kubeadmin-2 NoReady <none> 4h7m v1.28.0
k8s-kubeadmin-3 NoReady <none> 4h7m v1.28.0
需要安装 Pod 网络附加组件
3.0、k8s-kubeadmin-1节点执行：安装 Pod 网络附加组件-容器网络接口 (CNI)
下载安装：
wget https://github.com/containernetworking/plugins/releases/download/v1.3.0/cni-plugins-linux-amd64-v1.3.0.tgz
mkdir -pv /opt/cni/bin
tar zxvf cni-plugins-linux-amd64-v1.3.0.tgz -C /opt/cni/bin/
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
再次执行kubectl get node
[root@k8s-kubeadmin-1 yum.repos.d]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-kubeadmin-1 Ready control-plane 4h31m v1.28.0
k8s-kubeadmin-2 Ready <none> 4h7m v1.28.0
k8s-kubeadmin-3 Ready <none> 4h7m v1.28.0
查看命名空间kube-system的pod的状态：
[root@k8s-kubeadmin-1 yum.repos.d]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-66f779496c-9tqbt 1/1 Running 0 4h42m
coredns-66f779496c-wzvts 1/1 Running 0 4h42m
dashboard-metrics-scraper-5657497c4c-v2dn4 1/1 Running 0 3h
etcd-k8s-kubeadmin-1 1/1 Running 0 4h42m
kube-apiserver-k8s-kubeadmin-1 1/1 Running 0 4h42m
kube-controller-manager-k8s-kubeadmin-1 1/1 Running 0 4h42m
kube-proxy-bwksp 1/1 Running 0 4h19m
kube-proxy-gdd49 1/1 Running 0 4h42m
kube-proxy-svj87 1/1 Running 0 4h18m
kube-scheduler-k8s-kubeadmin-1 1/1 Running 0 4h42m
kubernetes-dashboard-76f4b5bc7d-gjm79 0/1 CrashLoopBackOff 26 (4m14s ago) 124m
3.1 、安装kubernetes-dashboard
拉取kubernetes-dashboard资源配置清单yaml文件
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml
没有其他手段看外面的世界的话可能会比较慢或者拉取失败，下面是我拉取下来的文件，可以复制使用:
其中用到的两个镜像：kubernetesui/dashboard:v2.7.0、kubernetesui/metrics-scraper:v1.0.8，阿里云镜像加速器上面没有。可以查找加速器上面有的，然后通过tag方式修改为它需要的。
在三个机器上都拉取配置。
下面的文件需要修改几个地方;
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
ports:
- port: 443
targetPort: 8443
name: https # 源文件没有name
nodePort: 32001 # 源文件没有nodePort
type: NodePort # 源文件没有nodePort
selector:
k8s-app: kubernetes-dashboard
源文件：
# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: v1
kind: Namespace
metadata:
name: kubernetes-dashboard
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
ports:
- port: 443
targetPort: 8443
selector:
k8s-app: kubernetes-dashboard
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kubernetes-dashboard
type: Opaque
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-csrf
namespace: kubernetes-dashboard
type: Opaque
data:
csrf: ""
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-key-holder
namespace: kubernetes-dashboard
type: Opaque
---
kind: ConfigMap
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-settings
namespace: kubernetes-dashboard
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
rules:
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
verbs: ["get", "update", "delete"]
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
# Allow Dashboard to get metrics.
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster", "dashboard-metrics-scraper"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
verbs: ["get"]
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
rules:
# Allow Metrics Scraper to get metrics from the Metrics server
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
securityContext:
seccompProfile:
type: RuntimeDefault
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.7.0
imagePullPolicy: Always
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
- mountPath: /tmp
name: tmp-volume
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
ports:
- port: 8000
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: dashboard-metrics-scraper
template:
metadata:
labels:
k8s-app: dashboard-metrics-scraper
spec:
securityContext:
seccompProfile:
type: RuntimeDefault
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.8
ports:
- containerPort: 8000
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
volumes:
- name: tmp-volume
emptyDir: {}
部署：
kubectl apply -f [你的本地路径]/recommended.yaml
本地创建dashboard-adminuser.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kubernetes-dashboard
kubectl apply -f [你的文件路径]/dashboard-adminuser.yaml
kubectl -n kubernetes-dashboard create token admin-user
保存输出的token，后面登录使用。
获取所有的命名空间下的pod：
[root@k8s-kubeadmin-1 yum.repos.d]# kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-flannel kube-flannel-ds-5r52b 1/1 Running 0 4h35m
kube-flannel kube-flannel-ds-9jvk4 1/1 Running 0 4h35m
kube-flannel kube-flannel-ds-jbc85 1/1 Running 0 4h35m
kube-system coredns-66f779496c-9tqbt 1/1 Running 0 5h8m
kube-system coredns-66f779496c-wzvts 1/1 Running 0 5h8m
kube-system dashboard-metrics-scraper-5657497c4c-v2dn4 1/1 Running 0 3h27m
kube-system etcd-k8s-kubeadmin-1 1/1 Running 0 5h9m
kube-system kube-apiserver-k8s-kubeadmin-1 1/1 Running 0 5h9m
kube-system kube-controller-manager-k8s-kubeadmin-1 1/1 Running 0 5h9m
kube-system kube-proxy-bwksp 1/1 Running 0 4h45m
kube-system kube-proxy-gdd49 1/1 Running 0 5h8m
kube-system kube-proxy-svj87 1/1 Running 0 4h45m
kube-system kube-scheduler-k8s-kubeadmin-1 1/1 Running 0 5h9m
kube-system kubernetes-dashboard-76f4b5bc7d-gjm79 0/1 CrashLoopBackOff 30 (7m54s ago) 150m
kubernetes-dashboard dashboard-metrics-scraper-5657497c4c-mk9hk 1/1 Running 0 4h28m
kubernetes-dashboard kubernetes-dashboard-78f87ddfc-v6l57 1/1 Running 0 4h28m
查看所有的命名空间下的服务：NodePort（发布出去）型
kubectl get svc --all-namespaces
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 5h10m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 5h10m
kubernetes-dashboard dashboard-metrics-scraper ClusterIP 10.109.201.223 <none> 8000/TCP 160m
kubernetes-dashboard kubernetes-dashboard NodePort 10.105.61.238 <none> 443:32001/TCP 157m
kubernetes-dashboard被部署到了k8s-kubeadmin-2节点。
访问：https://k8s-kubeadmin-2:32001/
