K8s Kubernetes集群部署
Kubernetes快速部署安装要求在开始之前，部署Kubernetes集群机器需要满足以下几个条件：至少3台机器，操作系统 RedHat硬件配置：2GB或更多RAM，2个CPU或更多CPU，硬盘20GB或更多集群中所有机器之间网络互通可以访问外网，需要拉取镜像禁止swap分区准备环境主机名系统IP地址安装软件masterredhat8192.168.2129.250Docker/kubeadm/
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Kubernetes快速部署
Kubernetes快速部署
安装要求
在开始之前，部署Kubernetes集群机器需要满足以下几个条件：
-
至少3台机器，操作系统 RedHat
- 硬件配置：2GB或更多RAM，2个CPU或更多CPU，硬盘20GB或更多
- 集群中所有机器之间网络互通
- 可以访问外网，需要拉取镜像
- 禁止swap分区
准备环境
| 主机名 | 系统 | IP地址 | 安装软件 |
|---|---|---|---|
| master | redhat8 | 192.168.2129.250 | Docker/kubeadm/kubelet |
| node1 | redhat8 | 192.168.129.135 | Docker/kubeadm/kubelet |
| node2 | redhat8 | 192.168.129.136 | Docker/kubeadm/kubelet |
每个节点都要操作（操作一样）（master、node1、node2）
//修改主机名
[root@localhost ~]# hostnamectl set-hostname master
[root@localhost ~]# bash
[root@master ~]#
//关闭防火墙
[root@master ~]# systemctl disable --now firewalld
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@master ~]# sed -i 's/enforcing/disabled/' /etc/selinux/config
//注释swap分区
[root@master ~]# vim /etc/fstab
[root@master ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Jul 12 03:16:40 2021
#
# Accessible filesystems, by reference, are maintained under '/dev/disk/'.
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
#
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
#
/dev/mapper/rhel-root / xfs defaults 0 0
UUID=ca3c6953-8c52-4d28-8798-b28bd0a6820a /boot xfs defaults 0 0
#/dev/mapper/rhel-swap swap swap defaults 0 0 #注释此行
[root@master ~]# sed -i.bak '/swap/s/^/#/' /etc/fstab
[root@master ~]# reboot（必须要重启）
//配置yum源
[root@master ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
[root@master ~]# sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
[root@master ~]# yum clean all && yum makecache
//时间同步
[root@master ~]# yum -y install chrony
[root@master ~]# sed -i 's/2.centos.pool.ntp.org/time1.aliyun.com/' /etc/chrony.conf #用ailiyun时间同步
[root@master ~]# systemctl enable --now chronyd
[root@master ~]# date
Fri Dec 17 19:09:54 CST 2021
[root@node1 ~]# date
2021年 12月 17日 星期五 19:09:58 CST
[root@node2 ~]# date
2021年 12月 17日 星期五 19:10:03 CST
//只在master添加hosts
[root@master ~]# cat >> /etc/hosts << EOF
192.168.129.250 master master.example.com
192.168.129.135 node1 node1.example.com
192.168.129.136 node2 node2.example.com
EOF
[root@master ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.129.250 master master.example.com
192.168.129.135 node1 node1.example.com
192.168.129.136 node2 node2.example.com
//只在master上添加，做将桥接的IPv4流量传递到iptables的链
[root@master ~]# cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
[root@master ~]# sysctl -p /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
#执行sysctl -p /etc/sysctl.d/k8s.conf生效
#如果有如下报错:
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
#解决方法：
#加载bridge模块，加载br_netfilter模块
[root@master ~]# modprobe br_netfilter
[root@master ~]# ls /proc/sys/net/bridge
bridge-nf-call-arptables bridge-nf-call-iptables bridge-nf-filter-vlan-tagged
bridge-nf-call-ip6tables bridge-nf-filter-pppoe-tagged bridge-nf-pass-vlan-input-dev
[root@master ~]# sysctl -p /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
//生效
[root@master ~]# sysctl --system
* Applying /usr/lib/sysctl.d/10-default-yama-scope.conf ...
kernel.yama.ptrace_scope = 0
* Applying /usr/lib/sysctl.d/50-coredump.conf ...
kernel.core_pattern = |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e
* Applying /usr/lib/sysctl.d/50-default.conf ...
kernel.sysrq = 16
kernel.core_uses_pid = 1
kernel.kptr_restrict = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.promote_secondaries = 1
net.core.default_qdisc = fq_codel
fs.protected_hardlinks = 1
fs.protected_symlinks = 1
* Applying /usr/lib/sysctl.d/50-libkcapi-optmem_max.conf ...
net.core.optmem_max = 81920
* Applying /usr/lib/sysctl.d/50-pid-max.conf ...
kernel.pid_max = 4194304
* Applying /etc/sysctl.d/99-sysctl.conf ...
* Applying /etc/sysctl.d/k8s.conf ...
* Applying /etc/sysctl.conf ...
//免密登录
[root@master ~]# ssh-keygen -t rsa
[root@master ~]# ssh-copy-id master
[root@master ~]# ssh-copy-id node1
[root@master ~]# ssh-copy-id node2
//测试互通
[root@master ~]# for i in master node1 node2;do ssh root@$i "date";done
Fri Dec 17 19:20:38 CST 2021
2021年 12月 17日 星期五 19:20:38 CST
2021年 12月 17日 星期五 19:20:38 CST
所有节点安装Docker/kubeadm/kubelet
Kubernetes默认CRI（容器运行时）为Docker，因此先安装Docker。
安装Docker
阿里云镜像加速位置
master
//获取源
[root@master ~]# yum -y install wget
[root@master ~]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
[root@master ~]# yum -y install docker-ce
[root@master ~]# systemctl enable --now docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@master ~]# docker --version
Docker version 20.10.14, build e91ed57
[root@master ~]# ls /etc/docker/
key.json
//镜像加速
[root@master ~]# cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": ["https://j3m2itm3.mirror.aliyuncs.com"], #阿里云加速器的地址
"exec-opts": ["native.cgroupdriver=systemd"], #使用原生的systemctl控制
"log-driver": "json-file", #日志的格式
"log-opts": { #日志的参数
"max-size": "100m" #日志单个文件最大100MB，如果超过100就会回滚，会自动再创建一个文件记录日志
},
"storage-driver": "overlay2" #存储的驱动
EOF
node1
//获取源
[root@node1 ~]# yum -y install wget
[root@node1 ~]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
[root@node1 ~]# yum -y install docker-ce
[root@node1 ~]# systemctl enable --now docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@node1 ~]# docker --version
Docker version 20.10.14, build a224086
[root@node1 ~]# ls /etc/docker/
key.json
//镜像加速
[root@node1 ~]# cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": ["https://j3m2itm3.mirror.aliyuncs.com"],
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2"
}
EOF
node2
[root@node2 ~]# yum -y install wget
[root@node2 ~]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
[root@node2 ~]# yum -y install docker-ce
[root@node2 ~]# systemctl enable --now docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@node2 ~]# docker --version
Docker version 20.10.14, build a224086
[root@node2 ~]# ls /etc/docker/
key.json
//镜像加速
[root@node2 ~]# cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": ["https://j3m2itm3.mirror.aliyuncs.com"],
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2"
}
EOF
添加kubernetes阿里云YUM软件源
master
[root@master ~]# 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=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
[root@master ~]# yum clean all && yum makecache
node1
[root@node1 ~]# 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=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
[root@node1 ~]# yum clean all && yum makecache
node2
[root@node2 ~]# 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=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
[root@node2 ~]# yum clean all && yum makecache
安装kubeadm，kubelet和kubectl
master
//安装kubeadm，kubelet和kubectl,由于版本更新频繁，这里指定版本号部署
[root@master ~]# yum install -y kubelet-1.20.0 kubeadm-1.20.0 kubectl-1.20.0
#配置kubelet的cgroup
#编辑/etc/sysconfig/kubelet, 添加下面的配置
cat <<EOF > /etc/sysconfig/kubelet
KUBELET_CGROUP_ARGS="--cgroup-driver=systemd"
KUBE_PROXY_MODE="ipvs"
EOF
[root@master ~]# systemctl enable kubelet
Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /usr/lib/systemd/system/kubelet.service.
[root@master ~]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: inactive (dead)
Docs: https://kubernetes.io/docs/
node1
[root@node1 ~]# yum install -y kubelet-1.20.0 kubeadm-1.20.0 kubectl-1.20.0
#配置kubelet的cgroup
#编辑/etc/sysconfig/kubelet, 添加下面的配置
cat <<EOF > /etc/sysconfig/kubelet
KUBELET_CGROUP_ARGS="--cgroup-driver=systemd"
KUBE_PROXY_MODE="ipvs"
EOF
[root@master ~]# systemctl enable kubelet
Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /usr/lib/systemd/system/kubelet.service.
[root@node1~]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: inactive (dead)
Docs: https://kubernetes.io/docs/
node2
[root@node2 ~]# yum install -y kubelet-1.20.0 kubeadm-1.20.0 kubectl-1.20.0
#配置kubelet的cgroup
#编辑/etc/sysconfig/kubelet, 添加下面的配置
cat <<EOF > /etc/sysconfig/kubelet
KUBELET_CGROUP_ARGS="--cgroup-driver=systemd"
KUBE_PROXY_MODE="ipvs"
EOF
[root@master ~]# systemctl enable kubelet
Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /usr/lib/systemd/system/kubelet.service.
[root@node2 ~]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: inactive (dead)
Docs: https://kubernetes.io/docs/
部署Kubernetes Master
master主机上操作，其他主机不用 初始化集群
-
—apiserver-advertise-address 集群通告地址
-
—image-repository 由于默认拉取镜像地址k8s.gcr.io国内无法访问，这里指定阿里云镜像仓库地址。
-
—kubernetes-version K8s版本，与上面安装的一致
-
—service-cidr 集群内部虚拟网络，Pod统一访问入口
-
—pod-network-cidr Pod网络，与下面部署的CNI网络组件yaml中保持一致
--token-ttl 默认的token有效期24小时， 设置为0表示永不过期
[root@master ~]# kubeadm init --apiserver-advertise-address 192.168.129.250 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.20.0 --service-cidr 10.96.0.0/12 --pod-network-cidr 10.244.0.0/16 --token-ttl=0
[init] Using Kubernetes version: v1.20.0
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
[WARNING FileExisting-tc]: tc not found in system path
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.14. Latest validated version: 19.03
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[certs] Using certificateDir folder "/etc/kubernetes/pki"
[certs] Generating "ca" certificate and key
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local master] and IPs [10.96.0.1 192.168.129.250]
[certs] Generating "apiserver-kubelet-client" certificate and key
[certs] Generating "front-proxy-ca" certificate and key
[certs] Generating "front-proxy-client" certificate and key
[certs] Generating "etcd/ca" certificate and key
[certs] Generating "etcd/server" certificate and key
[certs] etcd/server serving cert is signed for DNS names [localhost master] and IPs [192.168.129.250 127.0.0.1 ::1]
[certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [localhost master] and IPs [192.168.129.250 127.0.0.1 ::1]
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"
[kubeconfig] Writing "admin.conf" kubeconfig file
[kubeconfig] Writing "kubelet.conf" kubeconfig file
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
[kubeconfig] Writing "scheduler.conf" kubeconfig file
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Starting the kubelet
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
[control-plane] Creating static Pod manifest for "kube-controller-manager"
[control-plane] Creating static Pod manifest for "kube-scheduler"
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
[apiclient] All control plane components are healthy after 8.506240 seconds
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
[kubelet] Creating a ConfigMap "kubelet-config-1.20" in namespace kube-system with the configuration for the kubelets in the cluster
[upload-certs] Skipping phase. Please see --upload-certs
[mark-control-plane] Marking the node master as control-plane by adding the labels "node-role.kubernetes.io/master=''" and "node-role.kubernetes.io/control-plane='' (deprecated)"
[mark-control-plane] Marking the node master as control-plane by adding the taints [node-role.kubernetes.io/master:NoSchedule]
[bootstrap-token] Using token: akxmi3.rtm7hjgs7n9trljm
[bootstrap-token] Configuring bootstrap tokens, cluster-info ConfigMap, RBAC Roles
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstrap-token] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstrap-token] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
[kubelet-finalize] Updating "/etc/kubernetes/kubelet.conf" to point to a rotatable kubelet client certificate and key
[addons] Applied essential addon: CoreDNS
[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: #如果是管理员就运行下面一条命令
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:
#下面的命令写到文件保存起来
kubeadm join 192.168.129.250:6443 --token hglo7o.0ya3tbi82wqdjif4 \
--discovery-token-ca-cert-hash sha256:f6be891c6cd273a9283a6c05ca795811f7350afa2b5072990a294b7070ff9a4f
//把那条命令写入到文件中保存起来（以防万一）
[root@master ~]# vim init
kubeadm join 192.168.129.250:6443 --token hglo7o.0ya3tbi82wqdjif4 \
--discovery-token-ca-cert-hash sha256:f6be891c6cd273a9283a6c05ca795811f7350afa2b5072990a294b7070ff9a4f
#普通用则使用执行以下三条命令
[root@master ~]# mkdir -p $HOME/.kube
[root@master ~]# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
[root@master ~]# sudo chown $(id -u):$(id -g) $HOME/.kube/config
#如是管理员则执行以下这条命令
[root@master ~]# export KUBECONFIG=/etc/kubernetes/admin.conf
[root@master ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.aliyuncs.com/google_containers/kube-proxy v1.20.0 10cc881966cf 12 months ago 118MB
registry.aliyuncs.com/google_containers/kube-scheduler v1.20.0 3138b6e3d471 12 months ago 46.4MB
registry.aliyuncs.com/google_containers/kube-apiserver v1.20.0 ca9843d3b545 12 months ago 122MB
registry.aliyuncs.com/google_containers/kube-controller-manager v1.20.0 b9fa1895dcaa 12 months ago 116MB
registry.aliyuncs.com/google_containers/etcd 3.4.13-0 0369cf4303ff 15 months ago 253MB
registry.aliyuncs.com/google_containers/coredns 1.7.0 bfe3a36ebd25 18 months ago 45.2MB
registry.aliyuncs.com/google_containers/pause 3.2 80d28bedfe5d 22 months ago 683kB
//设置环境变量
[root@master ~]# echo 'export KUBECONFIG=/etc/kubernetes/admin.conf' > /etc/profile.d/k8s.sh
[root@master ~]# source /etc/profile.d/k8s.sh
[root@master ~]# echo $KUBECONFIG
/etc/kubernetes/admin.conf
[root@master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master Ready control-plane,master 76m v1.20.0 #要Ready（时间会有点长）
安装Pod网络插件（CNI）
[root@master ~]# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
The connection to the server raw.githubusercontent.com was refused - did you specify the right host or port? #出现此报错
//解决方案
[root@master ~]# cat /etc/hosts //添加如下内容
199.232.96.133 raw.githubusercontent.com
[root@master ~]# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
podsecuritypolicy.policy/psp.flannel.unprivileged 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
万一拉取不下来使用这个
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: psp.flannel.unprivileged
annotations:
seccomp.security.alpha.kubernetes.io/allowedProfileNames: docker/default
seccomp.security.alpha.kubernetes.io/defaultProfileName: docker/default
apparmor.security.beta.kubernetes.io/allowedProfileNames: runtime/default
apparmor.security.beta.kubernetes.io/defaultProfileName: runtime/default
spec:
privileged: false
volumes:
- configMap
- secret
- emptyDir
- hostPath
allowedHostPaths:
- pathPrefix: "/etc/cni/net.d"
- pathPrefix: "/etc/kube-flannel"
- pathPrefix: "/run/flannel"
readOnlyRootFilesystem: false
# Users and groups
runAsUser:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
fsGroup:
rule: RunAsAny
# Privilege Escalation
allowPrivilegeEscalation: false
defaultAllowPrivilegeEscalation: false
# Capabilities
allowedCapabilities: ['NET_ADMIN', 'NET_RAW']
defaultAddCapabilities: []
requiredDropCapabilities: []
# Host namespaces
hostPID: false
hostIPC: false
hostNetwork: true
hostPorts:
- min: 0
max: 65535
# SELinux
seLinux:
# SELinux is unused in CaaSP
rule: 'RunAsAny'
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: flannel
rules:
- apiGroups: ['extensions']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames: ['psp.flannel.unprivileged']
- apiGroups:
- ""
resources:
- pods
verbs:
- get
- apiGroups:
- ""
resources:
- nodes
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes/status
verbs:
- patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: flannel
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: flannel
subjects:
- kind: ServiceAccount
name: flannel
namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: flannel
namespace: kube-system
---
kind: ConfigMap
apiVersion: v1
metadata:
name: kube-flannel-cfg
namespace: kube-system
labels:
tier: node
app: flannel
data:
cni-conf.json: |
{
"name": "cbr0",
"cniVersion": "0.3.1",
"plugins": [
{
"type": "flannel",
"delegate": {
"hairpinMode": true,
"isDefaultGateway": true
}
},
{
"type": "portmap",
"capabilities": {
"portMappings": true
}
}
]
}
net-conf.json: |
{
"Network": "10.244.0.0/16",
"Backend": {
"Type": "vxlan"
}
}
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: kube-flannel-ds
namespace: kube-system
labels:
tier: node
app: flannel
spec:
selector:
matchLabels:
app: flannel
template:
metadata:
labels:
tier: node
app: flannel
spec:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/os
operator: In
values:
- linux
hostNetwork: true
priorityClassName: system-node-critical
tolerations:
- operator: Exists
effect: NoSchedule
serviceAccountName: flannel
initContainers:
- name: install-cni-plugin
image: rancher/mirrored-flannelcni-flannel-cni-plugin:v1.0.0
command:
- cp
args:
- -f
- /flannel
- /opt/cni/bin/flannel
volumeMounts:
- name: cni-plugin
mountPath: /opt/cni/bin
- name: install-cni
image: quay.io/coreos/flannel:v0.15.1
command:
- cp
args:
- -f
- /etc/kube-flannel/cni-conf.json
- /etc/cni/net.d/10-flannel.conflist
volumeMounts:
- name: cni
mountPath: /etc/cni/net.d
- name: flannel-cfg
mountPath: /etc/kube-flannel/
containers:
- name: kube-flannel
image: quay.io/coreos/flannel:v0.15.1
command:
- /opt/bin/flanneld
args:
- --ip-masq
- --kube-subnet-mgr
resources:
requests:
cpu: "100m"
memory: "50Mi"
limits:
cpu: "100m"
memory: "50Mi"
securityContext:
privileged: false
capabilities:
add: ["NET_ADMIN", "NET_RAW"]
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
volumeMounts:
- name: run
mountPath: /run/flannel
- name: flannel-cfg
mountPath: /etc/kube-flannel/
volumes:
- name: run
hostPath:
path: /run/flannel
- name: cni-plugin
hostPath:
path: /opt/cni/bin
- name: cni
hostPath:
path: /etc/cni/net.d
- name: flannel-cfg
configMap:
name: kube-flannel-cfg
确保能访问到这个网站
quay.io
加入Kubernetes Node
在node1与node2节点上执行
向集群添加新节点，执行在kubeadm init输出的kubeadm join命令：
//这里执行的就是我们刚才保存的init文件里面的内容
[root@node1 ~]# kubeadm join 192.168.129.250:6443 --token hglo7o.0ya3tbi82wqdjif4 --discovery-token-ca-cert-hash sha256:f6be891c6cd273a9283a6c05ca795811f7350afa2b5072990a294b7070ff9a4f
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
[WARNING FileExisting-tc]: tc not found in system path
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.14. Latest validated version: 19.03
[WARNING Hostname]: hostname "node1" could not be reached
[WARNING Hostname]: hostname "node1": lookup node1 on 192.168.129.2:53: no such host
[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.
// 在node2上执行
[root@node2 ~]# kubeadm join 192.168.129.250:6443 --token hglo7o.0ya3tbi82wqdjif4 --discovery-token-ca-cert-hash sha256:f6be891c6cd273a9283a6c05ca795811f7350afa2b5072990a294b7070ff9a4f
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
[WARNING FileExisting-tc]: tc not found in system path
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.14. Latest validated version: 19.03
[WARNING Hostname]: hostname "node2" could not be reached
[WARNING Hostname]: hostname "node2": lookup node2 on 114.114.114.114:53: no such host
[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.
默认token有效期为24小时，当过期之后，该token就不可用了。这时就需要重新创建token，操作如下：
kubeadm token create --print-join-command
测试kubernetes集群
// 查看节点的状态
[root@master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master Ready control-plane,master 80m v1.20.0
node1 NotReady <none> 69s v1.20.0 #等待状态变为Ready
node2 NotReady <none> 52s v1.20.0 #等待状态变为Ready
// 三个全都是ready之后，集群就部署好了
[root@master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master Ready control-plane,master 86m v1.20.0
node1 Ready <none> 6m17s v1.20.0
node2 Ready <none> 6m v1.20.0
//在node1和node2上查看镜像
[root@node1 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
rancher/mirrored-flannelcni-flannel v0.17.0 9247abf08677 3 weeks ago 59.8MB
rancher/mirrored-flannelcni-flannel-cni-plugin v1.0.1 ac40ce625740 2 months ago 8.1MB
registry.aliyuncs.com/google_containers/kube-proxy v1.20.0 10cc881966cf 15 months ago 118MB
registry.aliyuncs.com/google_containers/pause 3.2 80d28bedfe5d 2 years ago 683kB
[root@node2 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
rancher/mirrored-flannelcni-flannel v0.17.0 9247abf08677 3 weeks ago 59.8MB
rancher/mirrored-flannelcni-flannel-cni-plugin v1.0.1 ac40ce625740 2 months ago 8.1MB
registry.aliyuncs.com/google_containers/kube-proxy v1.20.0 10cc881966cf 15 months ago 118MB
registry.aliyuncs.com/google_containers/pause 3.2 80d28bedfe5d 2 years ago 683kB
//部署好之后，node1和node2上会自动运行一些容器
[root@node1 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f6961c459245 9247abf08677 "/opt/bin/flanneld -…" 2 minutes ago Up 2 minutes k8s_kube-flannel_kube-flannel-ds-s6mvw_kube-system_3bf0f1c1-5047-4df7-904f-43690b88d07a_0
d4748ee07358 registry.aliyuncs.com/google_containers/kube-proxy "/usr/local/bin/kube…" 3 minutes ago Up 3 minutes k8s_kube-proxy_kube-proxy-fkrj7_kube-system_8bdb0ed4-6d55-4b76-b304-38135cbb6615_0
cd305a6a8f96 registry.aliyuncs.com/google_containers/pause:3.2 "/pause" 4 minutes ago Up 4 minutes k8s_POD_kube-flannel-ds-s6mvw_kube-system_3bf0f1c1-5047-4df7-904f-43690b88d07a_0
e1aae57dff00 registry.aliyuncs.com/google_containers/pause:3.2 "/pause" 4 minutes ago Up 4 minutes k8s_POD_kube-proxy-fkrj7_kube-system_8bdb0ed4-6d55-4b76-b304-38135cbb6615_0
[root@node2 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fcc7db7ed008 9247abf08677 "/opt/bin/flanneld -…" 2 minutes ago Up 2 minutes k8s_kube-flannel_kube-flannel-ds-5gkk4_kube-system_ae36b0cb-55a3-48b2-adc1-ff2a57f60984_0
ad96c67b3e2a registry.aliyuncs.com/google_containers/kube-proxy "/usr/local/bin/kube…" 3 minutes ago Up 3 minutes k8s_kube-proxy_kube-proxy-jq48q_kube-system_6f858e1f-081b-4d4e-8075-264551b59983_0
f8ec1500bf9d registry.aliyuncs.com/google_containers/pause:3.2 "/pause" 4 minutes ago Up 4 minutes k8s_POD_kube-proxy-jq48q_kube-system_6f858e1f-081b-4d4e-8075-264551b59983_0
063aaaac409b registry.aliyuncs.com/google_containers/pause:3.2 "/pause" 4 minutes ago Up 4 minutes k8s_POD_kube-flannel-ds-5gkk4_kube-system_ae36b0cb-55a3-48b2-adc1-ff2a57f60984_0
//查看名称空间
[root@master ~]# kubectl get ns
NAME STATUS AGE
default Active 89m
kube-node-lease Active 89m
kube-public Active 89m
kube-system Active 89m
//指定名称空间去看pods的信息
[root@master ~]# kubectl get pods -n kube-system -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
coredns-7f89b7bc75-qjjmz 1/1 Running 0 91m 10.244.0.3 master <none> <none>
coredns-7f89b7bc75-rvcdl 1/1 Running 0 91m 10.244.0.2 master <none> <none>
etcd-master 1/1 Running 0 91m 192.168.129.250 master <none> <none>
kube-apiserver-master 1/1 Running 0 91m 192.168.129.250 master <none> <none>
kube-controller-manager-master 1/1 Running 0 91m 192.168.129.250 master <none> <none>
kube-flannel-ds-7stlz 1/1 Running 0 12m 192.168.129.135 node1 <none> <none>
kube-flannel-ds-7xthp 1/1 Running 0 58m 192.168.129.250 master <none> <none>
kube-flannel-ds-mzw2x 1/1 Running 0 11m 192.168.129.136 node2 <none> <none>
kube-proxy-b8qnc 1/1 Running 0 91m 192.168.129.250 master <none> <none>
kube-proxy-gr294 1/1 Running 0 12m 192.168.129.135 node1 <none> <none>
kube-proxy-mtgnd 1/1 Running 0 11m 192.168.129.136 node2 <none> <none>
kube-scheduler-master 1/1 Running 0 91m 192.168.129.250 master <none> <none>
[root@master ~]# kubectl create deployment nginx --image=nginx //运行一个nginx的pod
deployment.apps/nginx created
[root@master ~]# kubectl expose deployment nginx --port=80 --type=NodePort //映射80端口
service/nginx exposed
[root@master ~]# kubectl get pods,svc
NAME READY STATUS RESTARTS AGE
pod/nginx-6799fc88d8-8hwr2 0/1 ContainerCreating 0 33s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 87m
service/nginx NodePort 10.111.93.135 <none> 80:30274/TCP 24s
[root@master ~]# curl http://10.111.93.135
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
访问
master ip+暴露的端口访问
[root@master ~]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 103m
nginx NodePort 10.111.93.135 <none> 80:30274/TCP 16m
192.168.129.250:30274
部署dashboard
[root@master ~]# kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.3.1/aio/deploy/recommended.yaml
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created
万一拉取不下来可以使用这个
vi recommended.yaml
# 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:
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.3.1
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
annotations:
seccomp.security.alpha.kubernetes.io/pod: 'runtime/default'
spec:
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.6
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: {}
注：type: ClusterIP 改为 type: NodePort
kubectl expose deployment kubernetes-dashboard -n kube-system --type=NodePort --name=dashboard-test --port=9090
设置访问端口
[root@master ~]# kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
service/kubernetes-dashboard edited
// 找到端口，在安全组放行
[root@master ~]# kubectl get svc -A |grep kubernetes-dashboard
kubernetes-dashboard dashboard-metrics-scraper ClusterIP 10.107.113.124 <none> 8000/TCP 5m5s
kubernetes-dashboard kubernetes-dashboard NodePort 10.99.67.233 <none> 443:31352/TCP 5m5s
访问： https://集群任意IP:端口 https://192.168.129.135:31352
创建访问账号
[root@master ~]# vi dash.yaml
#创建访问账号，准备一个yaml文件； vi dash.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
[root@master ~]# kubectl apply -f dash.yaml
令牌访问
//获取访问令牌
[root@master ~]# kubectl -n kubernetes-dashboard get secret $(kubectl -n kubernetes-dashboard get sa/admin-user -o jsonpath="{.secrets[0].name}") -o go-template="{{.data.token | base64decode}}"
eyJhbGciOiJSUzI1NiIsImtpZCI6IllXc2dWN2ZabVBuVWFVWGhRUnlqRlYzV2UxMHgwYjVQdDM1SmpNOFVva0kifQ.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.WMJFjYTAL8ftsVyOgIvdTto7g58wfSNEOlwIkPlC3B6A5Scj21RL15l4ogVD831nk8OsP0hllVRpT0b8ouuT8tm90pCBfTh6pELI9qCVhbjg0bvx24sgk83_Wdw5AOIl-9Tv-lYhrj4qHxloL6xoRJIMEPcRVCbzGC_6fPWXweFjKerFKKUd9PGvUJIedS1Ot7YI-Njn8D6u8VR1yOznI9GFMYJRKluiNrEbl9C5GMegmpA-qCMTm-uoacn_72IhSWny2yHfNGIdMfJW1Waw_STCg8dQVcK80L4RbVI0ky8Zp3JmmPbeup3-7WNuPThe1vAa2BGXWK21bo6Xo34b5g
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