安装私有镜像仓库Harbor：https://blog.csdn.net/a595077052/article/details/119893070

配置k8s的dashboard：https://blog.csdn.net/a595077052/article/details/119894730 

IDEA借助maven插件构建镜像：https://blog.csdn.net/a595077052/article/details/119895152

安装 Kubernetes 多集群管理工具-Kuboard v3：https://blog.csdn.net/a595077052/article/details/119895591 

k8s部署微服务：https://blog.csdn.net/a595077052/article/details/119896910

一、安装并设置VM虚拟机

1.前提

在同一台电脑上安装三个VM模拟物理机，电脑配置CPU:是4核8线程内存8G(够呛，建议16G),每个VM分配2个处理器，每个处理器2个内核，硬盘50G，内存2G（我的8G只能将master设置为1.4G），之前在本本（2核4线程）安装，VM启动后经常连不上，k8s部署报了很多错误。

=======================================================================

以下操作在部署k8s主节点前，可以先在一台VM进行，完成后直接复制出2个VM镜像，修改CentOS 7 64 位.vmx中的mac地址，启动后再修改主机名和ip（静态ip）即可。

=======================================================================

2.安装VM和Centos

安装步骤省略。系统版本：Centos7.5(镜像版本CentOS-7-x86_64-DVD-1804），VMware-workstation-15.5.0

3.给普通用户授权

root给普通用户（k8s，大多数操作都没在普通用户下执行，其实涉及权限问题直接用root用户更方便）sudo权限vi /etc/sudoers，增加k8s ALL=(ALL) ALL，注意不能有太多空格和换行，并按wq!保存。（1、修改/etc/sudoers文件权限，进入超级用户，因为没有写权限，所以要先把写权限加上，chmod u+w /etc/sudoers，撤销写权限chmod u-w /etc/sudoers   ，可以免密码登录xxx ALL=(ALL)  NOPASSWD: ALL）

4.重启

shutdown -r now

5.设置网络

1)设置VM网络，编辑-》虚拟网络编辑器，并记下网关

2)k8s使用sudo修改只读文件，sudo vi /etc/sysconfig/network添加网关，添加的是在1）步查看的网关IP

GATEWAY=192.168.48.2

3)配置本机的网络（是虚拟网卡名ens33）：sudo vi /etc/sysconfig/network-scripts/ifcfg-ens33

4)重启网络服务service network restart 或/etc/init.d/network restart

Ifconfig 或者 ip addr查看

5)ping www.baidu.com 或者宿主机是否畅通。宿主机也可以ping虚拟机的ip，查看是否畅通

6)设置主机名

hostname查看当前主机名

可以使用如下命令来修改主机名hostnamectl set-hostname k8s-master

也可以修改其配置文件/etc/hostname里边的内容

三台VM机的网络配置如下（以下是本本上的IP，台式机上的子网为192.168.126.*）

节点	ip	主机名
master	192.168.48.128	k8s-master
node01	192.168.48.129	k8s-node01
node02	192.168.48.130	k8s-node02

7)各VM和宿主机配置域名映射hosts，使用域名访问

 VM修改/etc/hosts文件添加映射

192.168.48.128 k8s-master

192.168.48.129 k8s-node01

192.168.48.130 k8s-node02

宿主机hosts文件地址C:\Windows\System32\drivers\etc\hosts也添加上述配置

安装依赖环境，注意：每⼀台机器都需要安装此依赖环境，以下只能在一行执行（否则会报找不到换行引起的命令分隔）

yum install -y conntrack ntpdate ntp ipvsadm ipset jq iptables curl sysstat libseccomp wget vim net-tools git iproute lrzsz bash-completion tree bridge-utils unzip bind-utils gcc

如果出linux 编辑文件时提示swp文件已经存在，使用rm -rf删除该文件即可。

6.安装iptables并启动iptables

设置开机⾃启，清空iptables规则，保存当前规则到默认规则 # 关闭防⽕墙

systemctl stop firewalld && systemctl disable firewalld

7.置空iptables

yum -y install iptables-services && systemctl start iptables && systemctl

enable iptables && iptables -F && service iptables save

8.关闭selinux

#关闭swap分区【虚拟内存】并且永久关闭虚拟内存

swapoff -a && sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

#关闭selinux

setenforce 0 && sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config

9.升级Linux内核为4.44版本

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm

#安装内核

yum --enablerepo=elrepo-kernel install -y kernel-lt

#设置开机从新内核启动

grub2-set-default 'CentOS Linux (4.4.189-1.el7.elrepo.x86_64) 7 (Core)'

安装后版本可能不一样（grub2-set-default 'CentOS Linux (5.4.114-1.el7.elrepo.x86_64) 7 (Core)'，

修改步骤步骤一：cat /boot/grub2/grub.cfg |grep menuentry命令查看当前操作系统有几个系统内核所有的内核

步骤二：grub2-editenv list命令查看系统当前的默认内核，也可以使用uname -r查看，当前内核

步骤三：使用命令grub2-set-default '第一步中列出的内核版本'

步骤四：重启生效reboot

）

# 生成grub2配置文件

grub2-mkconfig -o /boot/grub2/grub.cfg

#注意：设置完内核后，需要重启服务器才会⽣效。

reboot

#查询内核

uname -r

过程中出现错误及解决

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm执行时出现已杀死，单独执行又错误：无法从 /var/lib/rpm 打开软件包数据库，删除rpm库重新安装：依次执行以下三条命令： cd /var/lib/rpm   rm -rf __db.*    rpm --rebuilddb 再执行之前的命令提示已安装;  node01节点安装时报内存不足，重新执行又报权限等问题，必须切换到root用户安装才行。错误：can't create 事务 lock on /var/lib/rpm/.rpm.lock (权限不够)
错误如下：
[k8s@k8s-node01 ~]$ rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm --force --nodeps
获取http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm
警告：/var/tmp/rpm-tmp.PXtAt7: 头V4 DSA/SHA1 Signature, 密钥 ID baadae52: NOKEY
错误：can't create 事务 lock on /var/lib/rpm/.rpm.lock (权限不够)
[k8s@k8s-node01 ~]$ yum --enablerepo=elrepo-kernel install -y kernel-lt
已加载插件：fastestmirror, langpacks
您需要 root 权限执行此命令。

yum安装时下载的rpm包存放路径 /var/cache/yum/，如果需要清理该目标下的文件，则执行rm清理，再重新执行rpm命令

如果报内存无法分配内存，或者内核没安装完整，那么就rpm -e（yum remove kernel-3.10.0-862.el7.x86_64   #删除旧内核这条命令可能无法删除，使用rpm -e进行删除）删除错误的内核，再重新尝试安装

10、调整内核参数

对于k8s

cat > kubernetes.conf <<EOF

net.bridge.bridge-nf-call-iptables=1

net.bridge.bridge-nf-call-ip6tables=1

net.ipv4.ip_forward=1

net.ipv4.tcp_tw_recycle=0

vm.swappiness=0

vm.overcommit_memory=1

vm.panic_on_oom=0

fs.inotify.max_user_instances=8192

fs.inotify.max_user_watches=1048576

fs.file-max=52706963

fs.nr_open=52706963

net.ipv6.conf.all.disable_ipv6=1

net.netfilter.nf_conntrack_max=2310720

EOF

#将优化内核⽂件拷⻉到/etc/sysctl.d/⽂件夹下，这样优化⽂件开机的时候能够被调⽤

cp kubernetes.conf /etc/sysctl.d/kubernetes.conf

#⼿动刷新，让优化⽂件⽴即⽣效

sysctl -p /etc/sysctl.d/kubernetes.conf

11、调整系统时区

--- 如果已经设置时区，可略过

#设置系统时区为中国/上海

timedatectl set-timezone Asia/Shanghai

#将当前的 UTC 时间写⼊硬件时钟

timedatectl set-local-rtc 0

#重启依赖于系统时间的服务

systemctl restart rsyslog

systemctl restart crond

12、关闭系统不需要的服务

systemctl stop postfix && systemctl disable postfix

13、设置⽇志保存⽅式

#1）.创建保存⽇志的⽬录

mkdir /var/log/journal

#2）.创建配置⽂件存放⽬录

mkdir /etc/systemd/journald.conf.d

#3）.创建配置⽂件

cat > /etc/systemd/journald.conf.d/99-prophet.conf <<EOF

[Journal]

Storage=persistent

Compress=yes

SyncIntervalSec=5m

RateLimitInterval=30s

RateLimitBurst=1000

SystemMaxUse=10G

SystemMaxFileSize=200M

MaxRetentionSec=2week

ForwardToSyslog=no

EOF

#4）.重启systemd journald的配置

systemctl restart systemd-journald

14、打开⽂件数调整 (可忽略，不执⾏)

echo "* soft nofile 65536" >> /etc/security/limits.conf

echo "* hard nofile 65536" >> /etc/security/limits.conf

15、kube-proxy 开启 ipvs 前置条件

modprobe br_netfilter

#如果内核版本较高，如5.4.114，已经不支持nf_conntrack_ipv4，需要将其改成nf_conntrack

cat > /etc/sysconfig/modules/ipvs.modules <<EOF

#!/bin/bash

modprobe -- ip_vs

modprobe -- ip_vs_rr

modprobe -- ip_vs_wrr

modprobe -- ip_vs_sh

modprobe -- nf_conntrack_ipv4

EOF

##使⽤lsmod命令查看这些⽂件是否被引导

chmod 755 /etc/sysconfig/modules/ipvs.modules && bash

/etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e

nf_conntrack_ipv4

二、docker部署

1、安装docker

yum install -y yum-utils device-mapper-persistent-data lvm2

#紧接着配置⼀个稳定（stable）的仓库、仓库配置会保存到/etc/yum.repos.d/docker-ce.repo⽂件中

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

#更新Yum安装的相关Docker软件包&安装Docker CE，耗时较长

yum update -y && yum install docker-ce

如果出现上图错误，需要执行命令：mv /var/lib/rpm/__db.00* /tmp/&&yum clean all后再执行安装更新命令yum update -y && yum install docker-ce

三、安装kubeadm

1、安装kubernetes

需要安装kubelet, kubeadm等包，但k8s官⽹给的yum源是

packages.cloud.google.com，国内访问不了，此时我们可以使⽤阿⾥云的yum仓库镜像。

cat <<EOF > /etc/yum.repos.d/kubernetes.repo

[kubernetes]

name=Kubernetes

baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64

enabled=1

gpgcheck=0

repo_gpgcheck=0

gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg

http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

EOF

2、安装kubeadm、kubelet、kubectl

yum install -y kubeadm-1.15.1 kubelet-1.15.1 kubectl-1.15.1

# 启动 kubelet

systemctl enable kubelet && systemctl start kubelet

四、k8s集群安装

1、rz上传基础镜像tar

文件kubeadm-basic.images.tar.gz（有点大暂不上传了）

2、解压tar

tar -zxvf kubeadm-basic.images.tar.gz

kubeadm-basic.images/

kubeadm-basic.images/coredns.tar

kubeadm-basic.images/etcd.tar

kubeadm-basic.images/pause.tar

kubeadm-basic.images/apiserver.tar

kubeadm-basic.images/proxy.tar

kubeadm-basic.images/kubec-con-man.tar

kubeadm-basic.images/scheduler.tar

3、将解压出来的镜像tar包导入到本地镜像仓库

使用脚本的方式将这些文件导入

1）touch load-images.sh

2）chmod 755 load-images.sh

3）vi load-images.sh

4）脚本

#1、导⼊镜像脚本代码 （在任意⽬录下创建sh脚本⽂件：image-load.sh）

#!/bin/bash

#注意 镜像解压的⽬录位置

ls /root/kubeadm-basic.images > /tmp/images-list.txt

cd /root/kubeadm-basic.images

for i in $(cat /tmp/images-list.txt)

do

docker load -i $i

done

rm -rf /tmp/images-list.txt

5）开始执⾏,镜像导⼊

./image-load.sh

6）传输⽂件及镜像到其他node节点

#拷⻉到node01节点

scp -r image-load.sh kubeadm-basic.images root@k8s-node01:/root/

#拷⻉到node02节点

scp -r image-load.sh kubeadm-basic.images root@k8s-node02:/root/

#其他节点依次执⾏sh脚本，导⼊镜像

使用docker images查看所有镜像，kubectl get node检查k8s是否可用

=======================================================================

以上可以先在一台VM上执行，完成后直接复制2个VM镜像，修改CentOS 7 64 位.vmx中的mac地址，启动后再修改主机名和ip（静态ip）即可

=======================================================================

4、k8s部署

#初始化主节点 --- 只需要在主节点执⾏

#1、拉去yaml资源配置⽂件

kubeadm config print init-defaults > kubeadm-config.yaml

#2、修改yaml资源⽂件

localAPIEndpoint:

advertiseAddress: 192.168.48.128 # 注意：修改配置⽂件的IP地址（本机的IP）

kubernetesVersion: v1.15.1 #注意：修改版本号，必须和kubectl版本保持⼀致

networking:

# 指定flannel模型通信 pod⽹段地址,此⽹段和flannel⽹段⼀致，podSubnet固定

podSubnet: "10.244.0.0/16"

serviceSubnet: "10.96.0.0/12"

#指定使⽤ipvs⽹络进⾏通信

---

apiVersion: kubeproxy.config.k8s.io/v1alpha1

kind: kubeProxyConfiguration

featureGates:

SupportIPVSProxyMode: true

mode: ipvs

#3、初始化主节点，开始部署

kubeadm init --config=kubeadm-config.yaml --experimental-upload-certs | tee kubeadm-init.log

#注意：执⾏此命令，CPU核⼼数量必须⼤于1核(2个处理器，每个处理器2个核心，配置低了会报很多错误)，否则⽆法执⾏成功（执行后未生成kubeadm-init.log日志文件，很奇怪）

（下图非本人的图片）

#4、初始化成功后执⾏如下命令

按照上图提示执行

#创建⽬录，保存连接配置缓存，认证⽂件

mkdir -p $HOME/.kube

#拷⻉集群管理配置⽂件

cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

#授权给配置⽂件

chown $(id -u):$(id -g) $HOME/.kube/config

执⾏命令前查询node（下图非本人的图片）

执⾏命令后查询node（下图非本人的图片）:

我们发现已经可以成功查询node节点信息了，但是节点的状态却是NotReady,不是Runing的状态。原因是此时我们使⽤ipvs+flannel的⽅式进⾏⽹络通信，但是flannel⽹络插件还没有部署，因此节点状态此时为NotReady

5、flannel插件

#部署flannel⽹络插件 --- 只需要在主节点执⾏

#1、下载flannel⽹络插件

wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

如果上述命令无法下载或者很慢，可以使用下面的代码，创建kube-flannel.yml文件

---
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']
  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/v1beta1
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/v1beta1
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-amd64
  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: beta.kubernetes.io/os
                    operator: In
                    values:
                      - linux
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - amd64
      hostNetwork: true
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-amd64
        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:v0.11.0-amd64
        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"]
        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
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-arm64
  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: beta.kubernetes.io/os
                    operator: In
                    values:
                      - linux
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - arm64
      hostNetwork: true
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-arm64
        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:v0.11.0-arm64
        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"]
        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
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-arm
  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: beta.kubernetes.io/os
                    operator: In
                    values:
                      - linux
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - arm
      hostNetwork: true
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-arm
        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:v0.11.0-arm
        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"]
        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
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-ppc64le
  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: beta.kubernetes.io/os
                    operator: In
                    values:
                      - linux
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - ppc64le
      hostNetwork: true
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-ppc64le
        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:v0.11.0-ppc64le
        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"]
        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
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-s390x
  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: beta.kubernetes.io/os
                    operator: In
                    values:
                      - linux
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - s390x
      hostNetwork: true
      tolerations:
      - operator: Exists
        effect: NoSchedule
      serviceAccountName: flannel
      initContainers:
      - name: install-cni
        image: quay.io/coreos/flannel:v0.11.0-s390x
        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:v0.11.0-s390x
        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"]
        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
          hostPath:
            path: /etc/cni/net.d
        - name: flannel-cfg
          configMap:
            name: kube-flannel-cfg

如果带上面的quay.io路径的也无法下载成功，将其全部替换成quay-mirror.qiniu.com，再试

#2、部署flannel

kubectl create -f kube-flannel.yml

#也可进⾏⽹络部署

kubectl apply –f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

如果部署完毕执行kubectl get pod -n kube-system,发现⼀些异常错误现象（下图非本人出现的问题）：

发现通过flannel部署的pod都出现pending,ImagePullBackOff这样的问题：

查询⽇志信息，发现了⼀些错误：

#查询⼀个pod的详细信息

kubectl get pod -n kube-system #查看kube-system下的pod

kubectl apply -f kube-flannel.yml #服务已正常启动

部署flannel⽹络插件时候，注意⽹络连通的问题，以下是成功后的状态：

#3、节点Join

           如果原有的kubeadm版本与（kubeadm version查看）master的不一致，卸载原kubeadm（若有）：

           yum remove -y kubelet kubeadm kubectl

           安装指定版本的kubeadm

           yum install -y kubelet-1.15.1 kubeadm-1.15.1 kubectl-1.15.1

在master 节点执行kubeadm token create --print-join-command，会生成token信息

kubeadm join 192.168.126.128:6443 --token ag2z1s.hw3foj8gd39pb96r     --discovery-token-ca-cert-hash sha256:e4868a0800c958d4066f1f1558b758a4155bad4ba4fd9afae956047d3fc6c3d9

在需要加入集群的node节点上执行上输出的信息，加入成功的如下

如果报错后面加上参数 --ignore-preflight-errors=all(或者执行前先执行kubeadm reset进行重置，注意这个没试过)

master查看加入的节点kubectl get node

以上就是k8s集群搭建的经过（主要是硬件问题很头疼，配置好能省不少事儿），接下来准备使用k8s部署微服务了