升级Kubernetes版本至1.18

电玩女神 2022-12-16 06:16 284阅读 0赞

#

继上篇我的博文升级Postman：https://blog.csdn.net/dong19891210/article/details/106458776，这次计划升级Kubernetes，要跟上时代，看这个明显落伍了watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70

发现和官网的相差十个多等级

我就一一记录下升级步骤

  1. 更改yum源

切换到

  1. cd  /etc/yum.repos.d

然后删除里面的默认yum配置，不放心的话可以备份，然后执行下载yum源配置

  1. wget http://mirrors.aliyun.com/repo/Centos-7.repo
  2. wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
  3. #dokcer yum源
  4. wget  https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

最后记得执行以下命令，让新yum源生效：

  1. yum clean all && yum makecache

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  1. 升级docker

先看下老版本的docker

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 2

请先卸载老版本的docker，要不然会出现

20200602020556823.png

执行以下命令

  1. yum list installed | grep docker

看装的docker列表

20200602020737811.png

删除它们

  1. yum remove -y docker*.x86_64

此时再次执行

  1. yum list installed | grep docker

20200602020933464.png

然后执行docker安装：

  1. yum -y install docker-ce

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下载进行中。。。。。。

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 4

安装完毕，然后启动docker

  1. systemctl start docker

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最后设置docker开机自启动功能

  1. systemctl enable docker

20200602022044613.png

很熟悉，spring生态里有很多@Enable开头的注解，也是表示启用某功能的意思

至此，docker也已升级完毕！！！

顺便修改下机器主机名

  1. hostnamectl set-hostname  master

20200602022517140.png

再次打开一个窗口就能看的主机名已被改了

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 6

3 .升级Kubernetes

前提跟docker类似，记得卸载老版本的kubernetes

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 7

配置阿里yum源

  1. cat <<EOF > /etc/yum.repos.d/kubernetes.repo
  2. [kubernetes]
  3. name=Kubernetes
  4. baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
  5. enabled=1
  6. gpgcheck=1
  7. repo_gpgcheck=1
  8. gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
  9. EOF

然后再次生成yum信息·

  1. yum clean all && yum makecache

然后执行命令

  1. yum list kubelet --showduplicates | sort -r

查看哪个版本的kubernetes可用

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有最新的，说明此yum源不错，很齐全

然后执行最新安装命令

  1. yum install -y kubelet-1.18.3-0 kubeadm-1.18.3-0 kubectl-1.18.3-0

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安装完毕watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 10

设置为开机自启动 

  1. systemctl enable kubelet && systemctl start kubelet
  3. 执行以下命令列出所需镜像，可以手动下载，也可以不用手动下载，master初始化时会自动下载。
  5. kubeadm --kubernetes-version=v1.18.3 config images list

20200602030414218.png

初始化master节点，执行以下命令

  1. kubeadm init --apiserver-advertise-address=192.168.8.200 \
  2.  --image-repository registry.aliyuncs.com/google_containers \
  3.  --kubernetes-version v1.18.3 \
  4.  --service-cidr=10.1.0.0/16 \
  5.  --pod-network-cidr=10.244.0.0/16

出现以下问题watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 11

那就关掉swap：

  1. swapoff -a

由于之前该机器已装过etcd

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目录/var/lib/etcd/既然不空，那就强制删除

20200602031959644.png

然后新建拉去镜像脚本images.sh,键入以下内容

  1. # 下面的镜像应该去除"k8s.gcr.io/"的前缀
  2. images=(  
  3.     kube-apiserver:v1.18.3
  4.     kube-controller-manager:v1.18.3
  5.     kube-scheduler:v1.18.3
  6.     kube-proxy:v1.18.3
  7.     pause:3.2
  8.     etcd:3.4.3-0
  9.     coredns:1.6.7
  10. )
  12. for imageName in ${images[@]} ; do
  13.     docker pull mirrorgcrio/$imageName
  14.     docker tag mirrorgcrio/$imageName k8s.gcr.io/$imageName
  15.     docker rmi mirrorgcrio/$imageName
  16. done

然后执行 

  1. sh images.sh

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慢慢拉镜像

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再次执行初始化工作：

  1. kubeadm init --apiserver-advertise-address=192.168.8.200 \
  2. --control-plane-endpoint="192.168.8.200:6443" \
  3.  --kubernetes-version v1.18.3 \
  4.  --service-cidr=10.1.0.0/16 \
  5.  --pod-network-cidr=10.244.0.0/16 \
  6.  --ignore-preflight-errors all

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然后按照提示设置普通账户权限

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

接着部署网络插件flannel

创建网络配置文件kube-flannel.yml

  1. ---
  2. apiVersion: policy/v1beta1
  3. kind: PodSecurityPolicy
  4. metadata:
  5.   name: psp.flannel.unprivileged
  6.   annotations:
  7.     seccomp.security.alpha.kubernetes.io/allowedProfileNames: docker/default
  8.     seccomp.security.alpha.kubernetes.io/defaultProfileName: docker/default
  9.     apparmor.security.beta.kubernetes.io/allowedProfileNames: runtime/default
  10.     apparmor.security.beta.kubernetes.io/defaultProfileName: runtime/default
  11. spec:
  12.   privileged: false
  13.   volumes:
  14.     - configMap
  15.     - secret
  16.     - emptyDir
  17.     - hostPath
  18.   allowedHostPaths:
  19.     - pathPrefix: "/etc/cni/net.d"
  20.     - pathPrefix: "/etc/kube-flannel"
  21.     - pathPrefix: "/run/flannel"
  22.   readOnlyRootFilesystem: false
  23.   # Users and groups
  24.   runAsUser:
  25.     rule: RunAsAny
  26.   supplementalGroups:
  27.     rule: RunAsAny
  28.   fsGroup:
  29.     rule: RunAsAny
  30.   # Privilege Escalation
  31.   allowPrivilegeEscalation: false
  32.   defaultAllowPrivilegeEscalation: false
  33.   # Capabilities
  34.   allowedCapabilities: ['NET_ADMIN']
  35.   defaultAddCapabilities: []
  36.   requiredDropCapabilities: []
  37.   # Host namespaces
  38.   hostPID: false
  39.   hostIPC: false
  40.   hostNetwork: true
  41.   hostPorts:
  42.   - min: 0
  43.     max: 65535
  44.   # SELinux
  45.   seLinux:
  46.     # SELinux is unused in CaaSP
  47.     rule: 'RunAsAny'
  48. ---
  49. kind: ClusterRole
  50. apiVersion: rbac.authorization.k8s.io/v1beta1
  51. metadata:
  52.   name: flannel
  53. rules:
  54.   - apiGroups: ['extensions']
  55.     resources: ['podsecuritypolicies']
  56.     verbs: ['use']
  57.     resourceNames: ['psp.flannel.unprivileged']
  58.   - apiGroups:
  59.       - ""
  60.     resources:
  61.       - pods
  62.     verbs:
  63.       - get
  64.   - apiGroups:
  65.       - ""
  66.     resources:
  67.       - nodes
  68.     verbs:
  69.       - list
  70.       - watch
  71.   - apiGroups:
  72.       - ""
  73.     resources:
  74.       - nodes/status
  75.     verbs:
  76.       - patch
  77. ---
  78. kind: ClusterRoleBinding
  79. apiVersion: rbac.authorization.k8s.io/v1beta1
  80. metadata:
  81.   name: flannel
  82. roleRef:
  83.   apiGroup: rbac.authorization.k8s.io
  84.   kind: ClusterRole
  85.   name: flannel
  86. subjects:
  87. - kind: ServiceAccount
  88.   name: flannel
  89.   namespace: kube-system
  90. ---
  91. apiVersion: v1
  92. kind: ServiceAccount
  93. metadata:
  94.   name: flannel
  95.   namespace: kube-system
  96. ---
  97. kind: ConfigMap
  98. apiVersion: v1
  99. metadata:
  100.   name: kube-flannel-cfg
  101.   namespace: kube-system
  102.   labels:
  103.     tier: node
  104.     app: flannel
  105. data:
  106.   cni-conf.json: |
  107.     {
  108.       "name": "cbr0",
  109.       "cniVersion": "0.3.1",
  110.       "plugins": [
  111.         {
  112.           "type": "flannel",
  113.           "delegate": {
  114.             "hairpinMode": true,
  115.             "isDefaultGateway": true
  116.           }
  117.         },
  118.         {
  119.           "type": "portmap",
  120.           "capabilities": {
  121.             "portMappings": true
  122.           }
  123.         }
  124.       ]
  125.     }
  126.   net-conf.json: |
  127.     {
  128.       "Network": "10.244.0.0/16",
  129.       "Backend": {
  130.         "Type": "vxlan"
  131.       }
  132.     }
  133. ---
  134. apiVersion: apps/v1
  135. kind: DaemonSet
  136. metadata:
  137.   name: kube-flannel-ds-amd64
  138.   namespace: kube-system
  139.   labels:
  140.     tier: node
  141.     app: flannel
  142. spec:
  143.   selector:
  144.     matchLabels:
  145.       app: flannel
  146.   template:
  147.     metadata:
  148.       labels:
  149.         tier: node
  150.         app: flannel
  151.     spec:
  152.       affinity:
  153.         nodeAffinity:
  154.           requiredDuringSchedulingIgnoredDuringExecution:
  155.             nodeSelectorTerms:
  156.               - matchExpressions:
  157.                   - key: kubernetes.io/os
  158.                     operator: In
  159.                     values:
  160.                       - linux
  161.                   - key: kubernetes.io/arch
  162.                     operator: In
  163.                     values:
  164.                       - amd64
  165.       hostNetwork: true
  166.       tolerations:
  167.       - operator: Exists
  168.         effect: NoSchedule
  169.       serviceAccountName: flannel
  170.       initContainers:
  171.       - name: install-cni
  172.         image: quay.io/coreos/flannel:v0.12.0-amd64
  173.         command:
  174.         - cp
  175.         args:
  176.         - -f
  177.         - /etc/kube-flannel/cni-conf.json
  178.         - /etc/cni/net.d/10-flannel.conflist
  179.         volumeMounts:
  180.         - name: cni
  181.           mountPath: /etc/cni/net.d
  182.         - name: flannel-cfg
  183.           mountPath: /etc/kube-flannel/
  184.       containers:
  185.       - name: kube-flannel
  186.         image: quay.io/coreos/flannel:v0.12.0-amd64
  187.         command:
  188.         - /opt/bin/flanneld
  189.         args:
  190.         - --ip-masq
  191.         - --kube-subnet-mgr
  192.         resources:
  193.           requests:
  194.             cpu: "100m"
  195.             memory: "50Mi"
  196.           limits:
  197.             cpu: "100m"
  198.             memory: "50Mi"
  199.         securityContext:
  200.           privileged: false
  201.           capabilities:
  202.             add: ["NET_ADMIN"]
  203.         env:
  204.         - name: POD_NAME
  205.           valueFrom:
  206.             fieldRef:
  207.               fieldPath: metadata.name
  208.         - name: POD_NAMESPACE
  209.           valueFrom:
  210.             fieldRef:
  211.               fieldPath: metadata.namespace
  212.         volumeMounts:
  213.         - name: run
  214.           mountPath: /run/flannel
  215.         - name: flannel-cfg
  216.           mountPath: /etc/kube-flannel/
  217.       volumes:
  218.         - name: run
  219.           hostPath:
  220.             path: /run/flannel
  221.         - name: cni
  222.           hostPath:
  223.             path: /etc/cni/net.d
  224.         - name: flannel-cfg
  225.           configMap:
  226.             name: kube-flannel-cfg
  227. ---
  228. apiVersion: apps/v1
  229. kind: DaemonSet
  230. metadata:
  231.   name: kube-flannel-ds-arm64
  232.   namespace: kube-system
  233.   labels:
  234.     tier: node
  235.     app: flannel
  236. spec:
  237.   selector:
  238.     matchLabels:
  239.       app: flannel
  240.   template:
  241.     metadata:
  242.       labels:
  243.         tier: node
  244.         app: flannel
  245.     spec:
  246.       affinity:
  247.         nodeAffinity:
  248.           requiredDuringSchedulingIgnoredDuringExecution:
  249.             nodeSelectorTerms:
  250.               - matchExpressions:
  251.                   - key: kubernetes.io/os
  252.                     operator: In
  253.                     values:
  254.                       - linux
  255.                   - key: kubernetes.io/arch
  256.                     operator: In
  257.                     values:
  258.                       - arm64
  259.       hostNetwork: true
  260.       tolerations:
  261.       - operator: Exists
  262.         effect: NoSchedule
  263.       serviceAccountName: flannel
  264.       initContainers:
  265.       - name: install-cni
  266.         image: quay.io/coreos/flannel:v0.12.0-arm64
  267.         command:
  268.         - cp
  269.         args:
  270.         - -f
  271.         - /etc/kube-flannel/cni-conf.json
  272.         - /etc/cni/net.d/10-flannel.conflist
  273.         volumeMounts:
  274.         - name: cni
  275.           mountPath: /etc/cni/net.d
  276.         - name: flannel-cfg
  277.           mountPath: /etc/kube-flannel/
  278.       containers:
  279.       - name: kube-flannel
  280.         image: quay.io/coreos/flannel:v0.12.0-arm64
  281.         command:
  282.         - /opt/bin/flanneld
  283.         args:
  284.         - --ip-masq
  285.         - --kube-subnet-mgr
  286.         resources:
  287.           requests:
  288.             cpu: "100m"
  289.             memory: "50Mi"
  290.           limits:
  291.             cpu: "100m"
  292.             memory: "50Mi"
  293.         securityContext:
  294.           privileged: false
  295.           capabilities:
  296.              add: ["NET_ADMIN"]
  297.         env:
  298.         - name: POD_NAME
  299.           valueFrom:
  300.             fieldRef:
  301.               fieldPath: metadata.name
  302.         - name: POD_NAMESPACE
  303.           valueFrom:
  304.             fieldRef:
  305.               fieldPath: metadata.namespace
  306.         volumeMounts:
  307.         - name: run
  308.           mountPath: /run/flannel
  309.         - name: flannel-cfg
  310.           mountPath: /etc/kube-flannel/
  311.       volumes:
  312.         - name: run
  313.           hostPath:
  314.             path: /run/flannel
  315.         - name: cni
  316.           hostPath:
  317.             path: /etc/cni/net.d
  318.         - name: flannel-cfg
  319.           configMap:
  320.             name: kube-flannel-cfg
  321. ---
  322. apiVersion: apps/v1
  323. kind: DaemonSet
  324. metadata:
  325.   name: kube-flannel-ds-arm
  326.   namespace: kube-system
  327.   labels:
  328.     tier: node
  329.     app: flannel
  330. spec:
  331.   selector:
  332.     matchLabels:
  333.       app: flannel
  334.   template:
  335.     metadata:
  336.       labels:
  337.         tier: node
  338.         app: flannel
  339.     spec:
  340.       affinity:
  341.         nodeAffinity:
  342.           requiredDuringSchedulingIgnoredDuringExecution:
  343.             nodeSelectorTerms:
  344.               - matchExpressions:
  345.                   - key: kubernetes.io/os
  346.                     operator: In
  347.                     values:
  348.                       - linux
  349.                   - key: kubernetes.io/arch
  350.                     operator: In
  351.                     values:
  352.                       - arm
  353.       hostNetwork: true
  354.       tolerations:
  355.       - operator: Exists
  356.         effect: NoSchedule
  357.       serviceAccountName: flannel
  358.       initContainers:
  359.       - name: install-cni
  360.         image: quay.io/coreos/flannel:v0.12.0-arm
  361.         command:
  362.         - cp
  363.         args:
  364.         - -f
  365.         - /etc/kube-flannel/cni-conf.json
  366.         - /etc/cni/net.d/10-flannel.conflist
  367.         volumeMounts:
  368.         - name: cni
  369.           mountPath: /etc/cni/net.d
  370.         - name: flannel-cfg
  371.           mountPath: /etc/kube-flannel/
  372.       containers:
  373.       - name: kube-flannel
  374.         image: quay.io/coreos/flannel:v0.12.0-arm
  375.         command:
  376.         - /opt/bin/flanneld
  377.         args:
  378.         - --ip-masq
  379.         - --kube-subnet-mgr
  380.         resources:
  381.           requests:
  382.             cpu: "100m"
  383.             memory: "50Mi"
  384.           limits:
  385.             cpu: "100m"
  386.             memory: "50Mi"
  387.         securityContext:
  388.           privileged: false
  389.           capabilities:
  390.              add: ["NET_ADMIN"]
  391.         env:
  392.         - name: POD_NAME
  393.           valueFrom:
  394.             fieldRef:
  395.               fieldPath: metadata.name
  396.         - name: POD_NAMESPACE
  397.           valueFrom:
  398.             fieldRef:
  399.               fieldPath: metadata.namespace
  400.         volumeMounts:
  401.         - name: run
  402.           mountPath: /run/flannel
  403.         - name: flannel-cfg
  404.           mountPath: /etc/kube-flannel/
  405.       volumes:
  406.         - name: run
  407.           hostPath:
  408.             path: /run/flannel
  409.         - name: cni
  410.           hostPath:
  411.             path: /etc/cni/net.d
  412.         - name: flannel-cfg
  413.           configMap:
  414.             name: kube-flannel-cfg
  415. ---
  416. apiVersion: apps/v1
  417. kind: DaemonSet
  418. metadata:
  419.   name: kube-flannel-ds-ppc64le
  420.   namespace: kube-system
  421.   labels:
  422.     tier: node
  423.     app: flannel
  424. spec:
  425.   selector:
  426.     matchLabels:
  427.       app: flannel
  428.   template:
  429.     metadata:
  430.       labels:
  431.         tier: node
  432.         app: flannel
  433.     spec:
  434.       affinity:
  435.         nodeAffinity:
  436.           requiredDuringSchedulingIgnoredDuringExecution:
  437.             nodeSelectorTerms:
  438.               - matchExpressions:
  439.                   - key: kubernetes.io/os
  440.                     operator: In
  441.                     values:
  442.                       - linux
  443.                   - key: kubernetes.io/arch
  444.                     operator: In
  445.                     values:
  446.                       - ppc64le
  447.       hostNetwork: true
  448.       tolerations:
  449.       - operator: Exists
  450.         effect: NoSchedule
  451.       serviceAccountName: flannel
  452.       initContainers:
  453.       - name: install-cni
  454.         image: quay.io/coreos/flannel:v0.12.0-ppc64le
  455.         command:
  456.         - cp
  457.         args:
  458.         - -f
  459.         - /etc/kube-flannel/cni-conf.json
  460.         - /etc/cni/net.d/10-flannel.conflist
  461.         volumeMounts:
  462.         - name: cni
  463.           mountPath: /etc/cni/net.d
  464.         - name: flannel-cfg
  465.           mountPath: /etc/kube-flannel/
  466.       containers:
  467.       - name: kube-flannel
  468.         image: quay.io/coreos/flannel:v0.12.0-ppc64le
  469.         command:
  470.         - /opt/bin/flanneld
  471.         args:
  472.         - --ip-masq
  473.         - --kube-subnet-mgr
  474.         resources:
  475.           requests:
  476.             cpu: "100m"
  477.             memory: "50Mi"
  478.           limits:
  479.             cpu: "100m"
  480.             memory: "50Mi"
  481.         securityContext:
  482.           privileged: false
  483.           capabilities:
  484.              add: ["NET_ADMIN"]
  485.         env:
  486.         - name: POD_NAME
  487.           valueFrom:
  488.             fieldRef:
  489.               fieldPath: metadata.name
  490.         - name: POD_NAMESPACE
  491.           valueFrom:
  492.             fieldRef:
  493.               fieldPath: metadata.namespace
  494.         volumeMounts:
  495.         - name: run
  496.           mountPath: /run/flannel
  497.         - name: flannel-cfg
  498.           mountPath: /etc/kube-flannel/
  499.       volumes:
  500.         - name: run
  501.           hostPath:
  502.             path: /run/flannel
  503.         - name: cni
  504.           hostPath:
  505.             path: /etc/cni/net.d
  506.         - name: flannel-cfg
  507.           configMap:
  508.             name: kube-flannel-cfg
  509. ---
  510. apiVersion: apps/v1
  511. kind: DaemonSet
  512. metadata:
  513.   name: kube-flannel-ds-s390x
  514.   namespace: kube-system
  515.   labels:
  516.     tier: node
  517.     app: flannel
  518. spec:
  519.   selector:
  520.     matchLabels:
  521.       app: flannel
  522.   template:
  523.     metadata:
  524.       labels:
  525.         tier: node
  526.         app: flannel
  527.     spec:
  528.       affinity:
  529.         nodeAffinity:
  530.           requiredDuringSchedulingIgnoredDuringExecution:
  531.             nodeSelectorTerms:
  532.               - matchExpressions:
  533.                   - key: kubernetes.io/os
  534.                     operator: In
  535.                     values:
  536.                       - linux
  537.                   - key: kubernetes.io/arch
  538.                     operator: In
  539.                     values:
  540.                       - s390x
  541.       hostNetwork: true
  542.       tolerations:
  543.       - operator: Exists
  544.         effect: NoSchedule
  545.       serviceAccountName: flannel
  546.       initContainers:
  547.       - name: install-cni
  548.         image: quay.io/coreos/flannel:v0.12.0-s390x
  549.         command:
  550.         - cp
  551.         args:
  552.         - -f
  553.         - /etc/kube-flannel/cni-conf.json
  554.         - /etc/cni/net.d/10-flannel.conflist
  555.         volumeMounts:
  556.         - name: cni
  557.           mountPath: /etc/cni/net.d
  558.         - name: flannel-cfg
  559.           mountPath: /etc/kube-flannel/
  560.       containers:
  561.       - name: kube-flannel
  562.         image: quay.io/coreos/flannel:v0.12.0-s390x
  563.         command:
  564.         - /opt/bin/flanneld
  565.         args:
  566.         - --ip-masq
  567.         - --kube-subnet-mgr
  568.         resources:
  569.           requests:
  570.             cpu: "100m"
  571.             memory: "50Mi"
  572.           limits:
  573.             cpu: "100m"
  574.             memory: "50Mi"
  575.         securityContext:
  576.           privileged: false
  577.           capabilities:
  578.              add: ["NET_ADMIN"]
  579.         env:
  580.         - name: POD_NAME
  581.           valueFrom:
  582.             fieldRef:
  583.               fieldPath: metadata.name
  584.         - name: POD_NAMESPACE
  585.           valueFrom:
  586.             fieldRef:
  587.               fieldPath: metadata.namespace
  588.         volumeMounts:
  589.         - name: run
  590.           mountPath: /run/flannel
  591.         - name: flannel-cfg
  592.           mountPath: /etc/kube-flannel/
  593.       volumes:
  594.         - name: run
  595.           hostPath:
  596.             path: /run/flannel
  597.         - name: cni
  598.           hostPath:
  599.             path: /etc/cni/net.d
  600.         - name: flannel-cfg
  601.           configMap:
  602.             name: kube-flannel-cfg

执行命令安装

kubectl apply -f kube-flannel.yml

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RvbmcxOTg5MTIxMA_size_16_color_FFFFFF_t_70 16

终于升级到了最新版！！！

建议裸机安装，不要像我一样用装过docker和kubernetes旧版本的机器，这老外天天改动，有出入，就像spring新版和老版本并不完全兼容，追人家的永远都受制于人！！！！！！

小结：不建议此种方式安装升级，还是以前源码式安装比较牢靠。

参考:

0. 升级Kubernetes 1.18前，你不得不知的9件事

http://dockone.io/article/9952

1. Kubernetes 1.18: Fit & Finish

https://kubernetes.io/blog/2020/03/25/kubernetes-1-18-release-announcement/

  1. Kubernetes 版本及版本倾斜支持策略 https://kubernetes.io/zh/docs/setup/release/

  2. 使用kubeadm在Centos8上部署kubernetes1.18 https://www.kubernetes.org.cn/7189.html

  3. kubernetes/yum/ https://mirrors.aliyun.com/kubernetes/yum/

  4. kubeadm安装kubenetes1.15.4集群 http://www.shangdixinxi.com/detail-1301548.html

6 Linux下minikube启动失败(It seems like the kubelet isn’t running or healthy)

http://www.luyixian.cn/news_show_73520.aspx

  1. Kubernetes使用中发现的问题和错误 https://yq.aliyun.com/articles/679198

  2. 备忘录 https://blog-static.cnblogs.com/files/dongguangming/%E5%9C%A8centos7%E4%B8%8A%E5%AE%89%E8%A3%85%E5%92%8C%E9%85%8D%E7%BD%AEKubernetes,docker%E9%9B%86%E7%BE%A4%E7%AE%A1%E7%90%86.js

  3. how to install kubernetes on centos7 or ubuntu18-04 （要 fan qiang） https://www.itzgeek.com/how-tos/linux/centos-how-tos/how-to-install-kubernetes-on-centos-7-ubuntu-18-04-16-04-debian-9.html

  4. setting up kubernetes cluster single-cp ormultiple-cp（也要fan qiang） https://medium.com/the-tech-inducers/setting-up-kubernetes-cluster-single-cp-or-multiple-cp-a7e8d95b3c0c

  5. ubuntu18.04 kubeadm 安装kubernetes v1.18.3 https://www.taodudu.cc/news/show-58109.html

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