摘要：前言達到了生產可用，利用部署一個高可用集群簡單不少。部署高可用集群為創建負載均衡這里選擇的。執行加入操作驗證部署部署的創建為打標簽標記子網以允許入口控制器自動發現用于的子網。

kubeadm1.13達到了生產可用，利用kubeadm部署一個高可用集群簡單不少。但是竟然部署在aws上，就要啟用cloud-provider=aws，深度結合iaas層資源。主要是利用aws的elb和ebs等。相關的資料還是比較少的，已經有的一些文檔要不是out了，要不就是內容不全，還有很多文章只是弄了一個demo的水平，完全沒法上生產，部署過程破費周折。

Kubernetes 1.13.1

Docker 18.06.0-ce

Etcd 3.2.24

Calico 3.4.0 網絡

master:

172.31.22.208

172.31.17.44

172.31.22.135

node:

172.31.29.58

etcd集群非容器部署，systemd守護

三臺master主機配置ssh免密登錄

systemctl stop firewalld
systemctl disable firewalld

# Set SELinux in permissive mode (effectively disabling it)
setenforce 0
sed -i "s/^SELINUX=enforcing$/SELINUX=permissive/" /etc/selinux/config

cat <  /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
vm.swappiness=0
EOF
sysctl --system

swapoff -a

修改/etc/fstab 文件，注釋掉 SWAP 的自動掛載.
使用free -m確認swap已經關閉。

at > /etc/sysconfig/modules/ipvs.modules <
上面腳本創建了的/etc/sysconfig/modules/ipvs.modules文件，保證在節點重啟后能自動加載所需模塊。 使用lsmod | grep -e ip_vs -e nf_conntrack_ipv4命令查看是否已經正確加載所需的內核模塊。
接下來還需要確保各個節點上已經安裝了ipset軟件包yum install ipset。 為了便于查看ipvs的代理規則，最好安裝一下管理工具ipvsadm yum install ipvsadm。
賦予IAM權限
Master Policy
  {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "autoscaling:DescribeAutoScalingGroups",
        "autoscaling:DescribeLaunchConfigurations",
        "autoscaling:DescribeTags",
        "ec2:DescribeInstances",
        "ec2:DescribeRegions",
        "ec2:DescribeRouteTables",
        "ec2:DescribeSecurityGroups",
        "ec2:DescribeSubnets",
        "ec2:DescribeVolumes",
        "ec2:CreateSecurityGroup",
        "ec2:CreateTags",
        "ec2:CreateVolume",
        "ec2:ModifyInstanceAttribute",
        "ec2:ModifyVolume",
        "ec2:AttachVolume",
        "ec2:AuthorizeSecurityGroupIngress",
        "ec2:CreateRoute",
        "ec2:DeleteRoute",
        "ec2:DeleteSecurityGroup",
        "ec2:DeleteVolume",
        "ec2:DetachVolume",
        "ec2:RevokeSecurityGroupIngress",
        "ec2:DescribeVpcs",
        "elasticloadbalancing:AddTags",
        "elasticloadbalancing:AttachLoadBalancerToSubnets",
        "elasticloadbalancing:ApplySecurityGroupsToLoadBalancer",
        "elasticloadbalancing:CreateLoadBalancer",
        "elasticloadbalancing:CreateLoadBalancerPolicy",
        "elasticloadbalancing:CreateLoadBalancerListeners",
        "elasticloadbalancing:ConfigureHealthCheck",
        "elasticloadbalancing:DeleteLoadBalancer",
        "elasticloadbalancing:DeleteLoadBalancerListeners",
        "elasticloadbalancing:DescribeLoadBalancers",
        "elasticloadbalancing:DescribeLoadBalancerAttributes",
        "elasticloadbalancing:DetachLoadBalancerFromSubnets",
        "elasticloadbalancing:DeregisterInstancesFromLoadBalancer",
        "elasticloadbalancing:ModifyLoadBalancerAttributes",
        "elasticloadbalancing:RegisterInstancesWithLoadBalancer",
        "elasticloadbalancing:SetLoadBalancerPoliciesForBackendServer",
        "elasticloadbalancing:AddTags",
        "elasticloadbalancing:CreateListener",
        "elasticloadbalancing:CreateTargetGroup",
        "elasticloadbalancing:DeleteListener",
        "elasticloadbalancing:DeleteTargetGroup",
        "elasticloadbalancing:DescribeListeners",
        "elasticloadbalancing:DescribeLoadBalancerPolicies",
        "elasticloadbalancing:DescribeTargetGroups",
        "elasticloadbalancing:DescribeTargetHealth",
        "elasticloadbalancing:ModifyListener",
        "elasticloadbalancing:ModifyTargetGroup",
        "elasticloadbalancing:RegisterTargets",
        "elasticloadbalancing:SetLoadBalancerPoliciesOfListener",
        "iam:CreateServiceLinkedRole",
        "kms:DescribeKey"
      ],
      "Resource": [
        "*"
      ]
    },
  ]
}
Node Policy
  {
      "Version": "2012-10-17",
      "Statement": [
          {
              "Effect": "Allow",
              "Action": [
                  "ec2:DescribeInstances",
                  "ec2:DescribeRegions",
                  "ecr:GetAuthorizationToken",
                  "ecr:BatchCheckLayerAvailability",
                  "ecr:GetDownloadUrlForLayer",
                  "ecr:GetRepositoryPolicy",
                  "ecr:DescribeRepositories",
                  "ecr:ListImages",
                  "ecr:BatchGetImage",
                  "sts:AssumeRole"
              ],
              "Resource": "*"
          } 
      ]
  }
tag標簽
需要為ec2實例, route table, subnet，安全組 打下面的標簽：
kubernetes.io/cluster/="owned"
cluster-name命名規范：
k8s-{region}-{env}-{num}
例如：
k8s-usa-west-2-test-1
安裝docker和kubeadm
安裝指定版本docker
安裝docker
yum install docker-18.06.1ce-5.amzn2 -y

systemctl enable docker
更改docker Root Dir 目錄
將/var/lib/dokcer 配置到/data/docker,確保/data是另外掛載的數據盤
更改 ‘/etc/sysconfig/docker’ 文件:
OPTIONS="--default-ulimit nofile=1024:4096 -g /data/docker" 
更改 /etc/docker/daemon.json:
cat >  /etc/docker/daemon.json <
驗證
[root@ip-172-31-22-208 ~]# ls -lrt /var/lib/docker
總用量 0
[root@ip-172-31-22-208 ~]# ls -lrt /data/docker/
總用量 0
drwx------ 3 root root 20 12月 11 10:44 containerd
drwx------ 2 root root  6 12月 11 10:44 tmp
drwx------ 2 root root  6 12月 11 10:44 runtimes
drwx------ 4 root root 32 12月 11 10:44 plugins
drwx------ 2 root root  6 12月 11 10:44 containers
drwx------ 2 root root 25 12月 11 10:44 volumes
drwx------ 3 root root 22 12月 11 10:44 image
drwx------ 2 root root  6 12月 11 10:44 trust
drwxr-x--- 3 root root 19 12月 11 10:44 network
drwx------ 3 root root 40 12月 11 10:44 overlay2
drwx------ 2 root root  6 12月 11 10:44 swarm
drwx------ 2 root root 24 12月 11 10:44 builder
drwx------ 4 root root 92 12月 11 10:44 buildkit
重啟docker 服務
systemctl start docker
驗證docker：
root@ip-172-31-22-208 ~]# docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 18.06.1-ce
Storage Driver: overlay2
 Backing Filesystem: xfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.14.70-72.55.amzn2.x86_64
Operating System: Amazon Linux 2
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.67GiB
Name: ip-172-31-22-208.us-west-2.compute.internal
ID: CG7S:P5XD:FLU6:MULI:2TSI:OLRY:A6EX:SM3D:FXNB:CMEQ:MU6R:XSCW
Docker Root Dir: /data/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
安裝kubeadm等
增加k8s repo
cat < /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=0
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
exclude=kube*
EOF
安裝kubeadm, kubelet, kubectl
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes

systemctl enable kubelet && systemctl start kubelet
驗證kubeadm版本
[root@ip-172-31-22-208 ~]# kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.0", GitCommit:"ddf47ac13c1a9483ea035a79cd7c10005ff21a6d", GitTreeState:"clean", BuildDate:"2018-12-03T21:02:01Z", GoVersion:"go1.11.2", Compiler:"gc", Platform:"linux/amd64"}
更新 kubelet config
設置節點預留資源 ,同時為了支持 cloud-provider， 首先需要在 kubelet 的配置里做相應修改，為 /etc/sysconfig/kubelet 添加 KUBELET_EXTRA_ARGS:
KUBELET_EXTRA_ARGS=--cloud-provider=aws 
預留資源
設置cgroups
mkdir -p /sys/fs/cgroup/cpu/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/cpuacct/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/cpuset/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/memory/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/devices/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/blkio/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/hugetlb/system.slice/kubelet.service
mkdir -p /sys/fs/cgroup/systemd/system.slice/kubelet.service
在/var/lib/kubelet/config.yaml中添加如下：
enforceNodeAllocatable:
- pods
- kube-reserved
- system-reserved
kubeReservedCgroup: /system.slice/kubelet.service
systemReservedCgroup: /system.slice
systemReserved:
  cpu: 500m
  memory: 1Gi
  ephemeral-storage: 5Gi
kubeReserved:
  cpu: 500m
  memory: 1Gi
  ephemeral-storage: 5Gi
部署高可用 etcd 集群
kuberntes 系統使用 etcd 存儲所有數據，本文檔介紹部署一個三節點高可用 etcd 集群的步驟，這三個節點復用 kubernetes master 機器，分別命名為etcd-host0、etcd-host1、etcd-host2：

infra0: 172.31.22.208
infra1: 172.31.17.44
infra2: 172.31.22.135

使用的變量
本文檔用到的變量定義如下：
export NODE_NAME=infra0 # 當前部署的機器名稱(隨便定義，只要能區分不同機器即可)
export NODE_IP=172.31.22.208 # 當前部署的機器 IP
export NODE_IPS="172.31.22.208 172.31.17.44 172.31.22.135" # etcd 集群所有機器 IP
# etcd 集群間通信的IP和端口
export ETCD_NODES=infra0=https://172.31.22.208:2380,infra1=https://172.31.17.44:2380,infra2=https://172.31.22.135:2380

export NODE_NAME=infra1 # 當前部署的機器名稱(隨便定義，只要能區分不同機器即可)
export NODE_IP=172.31.17.44 # 當前部署的機器 IP
export NODE_IPS="172.31.22.208 172.31.17.44 172.31.22.135" # etcd 集群所有機器 IP
# etcd 集群間通信的IP和端口
export ETCD_NODES=infra0=https://172.31.22.208:2380,infra1=https://172.31.17.44:2380,infra2=https://172.31.22.135:2380

export NODE_NAME=infra2 # 當前部署的機器名稱(隨便定義，只要能區分不同機器即可)
export NODE_IP=172.31.22.135 # 當前部署的機器 IP
export NODE_IPS="172.31.22.208 172.31.17.44 172.31.22.135" # etcd 集群所有機器 IP
# etcd 集群間通信的IP和端口
export ETCD_NODES=infra0=https://172.31.22.208:2380,infra1=https://172.31.17.44:2380,infra2=https://172.31.22.135:2380

下載二進制文件
到 https://github.com/coreos/etcd/releases 頁面下載最新版本的二進制文件：
wget https://github.com/coreos/etcd/releases/download/v3.2.24/etcd-v3.2.24-linux-amd64.tar.gz
tar -xvf etcd-v3.2.24-linux-amd64.tar.gz
mv etcd-v3.2.24-linux-amd64/etcd* /usr/bin

利用kubeadm創建秘鑰和證書
為kubeadm創建配置文件
使用以下腳本為每個將在其上運行etcd成員的主機生成一個kubeadm配置文件。
# Update HOST0, HOST1, and HOST2 with the IPs or resolvable names of your hosts
export HOST0=172.31.22.208
export HOST1=172.31.17.44
export HOST2=172.31.22.135

# Create temp directories to store files that will end up on other hosts.
mkdir -p /tmp/${HOST0}/ /tmp/${HOST1}/ /tmp/${HOST2}/

ETCDHOSTS=(${HOST0} ${HOST1} ${HOST2})
NAMES=("infra0" "infra1" "infra2")

for i in "${!ETCDHOSTS[@]}"; do
HOST=${ETCDHOSTS[$i]}
NAME=${NAMES[$i]}
cat << EOF > /tmp/${HOST}/kubeadmcfg.yaml
apiVersion: "kubeadm.k8s.io/v1beta1"
kind: ClusterConfiguration
etcd:
    local:
        serverCertSANs:
        - "${HOST}"
        peerCertSANs:
        - "${HOST}"
        extraArgs:
            initial-cluster: infra0=https://${ETCDHOSTS[0]}:2380,infra1=https://${ETCDHOSTS[1]}:2380,infra2=https://${ETCDHOSTS[2]}:2380
            initial-cluster-state: new
            name: ${NAME}
            listen-peer-urls: https://${HOST}:2380
            listen-client-urls: https://${HOST}:2379
            advertise-client-urls: https://${HOST}:2379
            initial-advertise-peer-urls: https://${HOST}:2380
EOF
done
生成證書頒發機構
執行如下命令：
kubeadm init phase certs etcd-ca
生成下面兩個文件：

/etc/kubernetes/pki/etcd/ca.crt
/etc/kubernetes/pki/etcd/ca.key

為每個成員創建證書
kubeadm init phase certs etcd-server --config=/tmp/${HOST2}/kubeadmcfg.yaml
kubeadm init phase certs etcd-peer --config=/tmp/${HOST2}/kubeadmcfg.yaml
kubeadm init phase certs etcd-healthcheck-client --config=/tmp/${HOST2}/kubeadmcfg.yaml
kubeadm init phase certs apiserver-etcd-client --config=/tmp/${HOST2}/kubeadmcfg.yaml
cp -R /etc/kubernetes/pki /tmp/${HOST2}/
# cleanup non-reusable certificates
find /etc/kubernetes/pki -not -name ca.crt -not -name ca.key -type f -delete

kubeadm init phase certs etcd-server --config=/tmp/${HOST1}/kubeadmcfg.yaml
kubeadm init phase certs etcd-peer --config=/tmp/${HOST1}/kubeadmcfg.yaml
kubeadm init phase certs etcd-healthcheck-client --config=/tmp/${HOST1}/kubeadmcfg.yaml
kubeadm init phase certs apiserver-etcd-client --config=/tmp/${HOST1}/kubeadmcfg.yaml
cp -R /etc/kubernetes/pki /tmp/${HOST1}/
find /etc/kubernetes/pki -not -name ca.crt -not -name ca.key -type f -delete

kubeadm init phase certs etcd-server --config=/tmp/${HOST0}/kubeadmcfg.yaml
kubeadm init phase certs etcd-peer --config=/tmp/${HOST0}/kubeadmcfg.yaml
kubeadm init phase certs etcd-healthcheck-client --config=/tmp/${HOST0}/kubeadmcfg.yaml
kubeadm init phase certs apiserver-etcd-client --config=/tmp/${HOST0}/kubeadmcfg.yaml
# No need to move the certs because they are for HOST0

# clean up certs that should not be copied off this host
find /tmp/${HOST2} -name ca.key -type f -delete
find /tmp/${HOST1} -name ca.key -type f -delete
拷貝證書到對應的主機上
USER=root
CONTROL_PLANE_IPS="172.31.17.44 172.31.22.135"
for host in ${CONTROL_PLANE_IPS}; do
    scp -r /tmp/${host}/pki "${USER}"@$host:
done
$ 例如HOST0上所需文件的完整列表是：
/etc/kubernetes/pki
├── apiserver-etcd-client.crt
├── apiserver-etcd-client.key
└── etcd
    ├── ca.crt
    ├── ca.key
    ├── healthcheck-client.crt
    ├── healthcheck-client.key
    ├── peer.crt
    ├── peer.key
    ├── server.crt
    └── server.key
其他兩臺主機如上。
創建 etcd 的 systemd unit 文件
mkdir -p /var/lib/etcd  # 必須先創建工作目錄
cat > etcd.service <

指定 etcd 的工作目錄和數據目錄為 /var/lib/etcd，需在啟動服務前創建這個目錄；
為了保證通信安全，需要指定 etcd 的公私鑰(cert-file和key-file)、Peers 通信的公私鑰和 CA 證書(peer-cert-file、peer-key-file、peer-trusted-ca-file)、客戶端的CA證書（trusted-ca-file）；

--initial-cluster-state 值為 new 時，--name 的參數值必須位于 --initial-cluster 列表中；

啟動 etcd 服務
mv etcd.service /etc/systemd/system/
systemctl daemon-reload
systemctl enable etcd
systemctl start etcd
systemctl status etcd
$
最先啟動的 etcd 進程會卡住一段時間，等待其它節點上的 etcd 進程加入集群，為正?，F象。
在所有的 etcd 節點重復上面的步驟，直到所有機器的 etcd 服務都已啟動。
驗證服務
部署完 etcd 集群后，在任一 etcd 集群節點上執行如下命令：
for ip in ${NODE_IPS}; do
  ETCDCTL_API=3 /usr/bin/etcdctl 
  --endpoints=https://${ip}:2379  
  --cacert=/etc/kubernetes/pki/etcd/ca.crt 
  --cert=/etc/kubernetes/pki/etcd/server.crt 
  --key=/etc/kubernetes/pki/etcd/server.key 
  endpoint health; 
  done
預期結果：
https://172.31.22.208:2379 is healthy: successfully committed proposal: took = 1.543275ms
https://172.31.17.44:2379 is healthy: successfully committed proposal: took = 1.883033ms
https://172.31.22.135:2379 is healthy: successfully committed proposal: took = 2.026367ms
三臺 etcd 的輸出均為 healthy 時表示集群服務正常（忽略 warning 信息）。
部署高可用 master集群
為kube-apiserver創建tcp負載均衡
這里選擇aws的nlb。具體創建過程不再敘述。
創建結果nlb-sgt-k8sapiserver-test-4748f2f556591bb7.elb.us-west-2.amazonaws.com。
添加到變量
export LOAD_BALANCER_DNS=nlb-sgt-k8sapiserver-test-4748f2f556591bb7.elb.us-west-2.amazonaws.com
export ETCD_0_IP=172.31.22.208
export ETCD_1_IP=172.31.17.44
export ETCD_2_IP=172.31.22.135
創建 啟用aws cloud-provider
cat > kubeadm-config.yaml <
創建 不啟用aws cloud-provider
cat > kubeadm-config.yaml <
創建第一個master
執行
kubeadm init --config=kubeadm-config.yaml
出現以下:
設置訪問證書：
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config

創建剩余master
復制證書
USER=root # customizable
CONTROL_PLANE_IPS="172.31.17.44 172.31.22.135"
for host in ${CONTROL_PLANE_IPS}; do
    scp /etc/kubernetes/pki/ca.crt "${USER}"@$host:
    scp /etc/kubernetes/pki/ca.key "${USER}"@$host:
    scp /etc/kubernetes/pki/sa.key "${USER}"@$host:
    scp /etc/kubernetes/pki/sa.pub "${USER}"@$host:
    scp /etc/kubernetes/pki/front-proxy-ca.crt "${USER}"@$host:
    scp /etc/kubernetes/pki/front-proxy-ca.key "${USER}"@$host:
    scp /etc/kubernetes/admin.conf "${USER}"@$host:
done
在剩余主機執行：
USER=root # customizable
mv /${USER}/ca.crt /etc/kubernetes/pki/
mv /${USER}/ca.key /etc/kubernetes/pki/
mv /${USER}/sa.pub /etc/kubernetes/pki/
mv /${USER}/sa.key /etc/kubernetes/pki/
mv /${USER}/front-proxy-ca.crt /etc/kubernetes/pki/
mv /${USER}/front-proxy-ca.key /etc/kubernetes/pki/
mv /${USER}/admin.conf /etc/kubernetes/admin.conf
加入控制節點：
kubeadm join nlb-sgt-k8sapiserver-test-4748f2f556591bb7.elb.us-west-2.amazonaws.com:6443 --token u9hmb3.gwfozvsz90k3yt9g --discovery-token-ca-cert-hash sha256:24c354cce46de9c1eb1a8358b9ba064166e87cf6c011fecaae3350c3910c215a  --experimental-control-plane
忘記discovery-token-ca-cert-hash？
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed "s/^.* //"
部署calico網絡
檢查aws ec2
是否關閉了src/dst checks？
配置calicoctl
下載calicoctl
curl -O -L  https://github.com/projectcalico/calicoctl/releases/download/v3.4.0/calicoctl
chmod +x calicoctl
mv calicoctl /usr/bin/
配置calico config 文件
cat > /etc/calico/calicoctl.cfg <
使用到的變量
export ETCD_KEY=$(cat /etc/kubernetes/pki/etcd/server.key | base64 | tr -d "
")
export ETCD_CERT=$(cat /etc/kubernetes/pki/etcd/server.crt | base64 | tr -d "
")
export ETCD_CA=$(cat /etc/kubernetes/pki/etcd/ca.crt | base64 | tr -d "
")
創建calico.yml
cat > calico.yml < | base64 -w 0
  etcd-key: ${ETCD_KEY}
  etcd-cert: ${ETCD_CERT}
  etcd-ca: ${ETCD_CA}

---
# This manifest installs the calico/node container, as well
# as the Calico CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
  name: calico-node
  namespace: kube-system
  labels:
    k8s-app: calico-node
spec:
  selector:
    matchLabels:
      k8s-app: calico-node
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  template:
    metadata:
      labels:
        k8s-app: calico-node
      annotations:
        # This, along with the CriticalAddonsOnly toleration below,
        # marks the pod as a critical add-on, ensuring it gets
        # priority scheduling and that its resources are reserved
        # if it ever gets evicted.
        scheduler.alpha.kubernetes.io/critical-pod: ""
    spec:
      nodeSelector:
        beta.kubernetes.io/os: linux
      hostNetwork: true
      tolerations:
        # Make sure calico-node gets scheduled on all nodes.
        - effect: NoSchedule
          operator: Exists
        # Mark the pod as a critical add-on for rescheduling.
        - key: CriticalAddonsOnly
          operator: Exists
        - effect: NoExecute
          operator: Exists
      serviceAccountName: calico-node
      # Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
      # deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
      terminationGracePeriodSeconds: 0
      initContainers:
        # This container installs the Calico CNI binaries
        # and CNI network config file on each node.
        - name: install-cni
          image: quay.io/calico/cni:v3.4.0
          command: ["/install-cni.sh"]
          env:
            # Name of the CNI config file to create.
            - name: CNI_CONF_NAME
              value: "10-calico.conflist"
            # The CNI network config to install on each node.
            - name: CNI_NETWORK_CONFIG
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: cni_network_config
            # The location of the Calico etcd cluster.
            - name: ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_endpoints
            # CNI MTU Config variable
            - name: CNI_MTU
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: veth_mtu
            # Prevents the container from sleeping forever.
            - name: SLEEP
              value: "false"
          volumeMounts:
            - mountPath: /host/opt/cni/bin
              name: cni-bin-dir
            - mountPath: /host/etc/cni/net.d
              name: cni-net-dir
            - mountPath: /calico-secrets
              name: etcd-certs
      containers:
        # Runs calico/node container on each Kubernetes node.  This
        # container programs network policy and routes on each
        # host.
        - name: calico-node
          image: quay.io/calico/node:v3.4.0
          env:
            # The location of the Calico etcd cluster.
            - name: ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_endpoints
            # Location of the CA certificate for etcd.
            - name: ETCD_CA_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_ca
            # Location of the client key for etcd.
            - name: ETCD_KEY_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_key
            # Location of the client certificate for etcd.
            - name: ETCD_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_cert
            # Set noderef for node controller.
            - name: CALICO_K8S_NODE_REF
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            # Choose the backend to use.
            - name: CALICO_NETWORKING_BACKEND
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: calico_backend
            # Cluster type to identify the deployment type
            - name: CLUSTER_TYPE
              value: "k8s,bgp"
            # Auto-detect the BGP IP address.
            - name: IP
              value: "autodetect"
            # Enable IPIP
            - name: CALICO_IPV4POOL_IPIP
              value: "Always"
            # Set MTU for tunnel device used if ipip is enabled
            - name: FELIX_IPINIPMTU
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: veth_mtu
            # The default IPv4 pool to create on startup if none exists. Pod IPs will be
            # chosen from this range. Changing this value after installation will have
            # no effect. This should fall within --cluster-cidr.
            - name: CALICO_IPV4POOL_CIDR
              value: "192.168.0.0/16"
            # Disable file logging so `kubectl logs` works.
            - name: CALICO_DISABLE_FILE_LOGGING
              value: "true"
            # Set Felix endpoint to host default action to ACCEPT.
            - name: FELIX_DEFAULTENDPOINTTOHOSTACTION
              value: "ACCEPT"
            # Disable IPv6 on Kubernetes.
            - name: FELIX_IPV6SUPPORT
              value: "false"
            # Set Felix logging to "info"
            - name: FELIX_LOGSEVERITYSCREEN
              value: "info"
            - name: FELIX_HEALTHENABLED
              value: "true"
          securityContext:
            privileged: true
          resources:
            requests:
              cpu: 250m
          livenessProbe:
            httpGet:
              path: /liveness
              port: 9099
              host: localhost
            periodSeconds: 10
            initialDelaySeconds: 10
            failureThreshold: 6
          readinessProbe:
            exec:
              command:
              - /bin/calico-node
              - -bird-ready
              - -felix-ready
            periodSeconds: 10
          volumeMounts:
            - mountPath: /lib/modules
              name: lib-modules
              readOnly: true
            - mountPath: /run/xtables.lock
              name: xtables-lock
              readOnly: false
            - mountPath: /var/run/calico
              name: var-run-calico
              readOnly: false
            - mountPath: /var/lib/calico
              name: var-lib-calico
              readOnly: false
            - mountPath: /calico-secrets
              name: etcd-certs
      volumes:
        # Used by calico/node.
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: var-run-calico
          hostPath:
            path: /var/run/calico
        - name: var-lib-calico
          hostPath:
            path: /var/lib/calico
        - name: xtables-lock
          hostPath:
            path: /run/xtables.lock
            type: FileOrCreate
        # Used to install CNI.
        - name: cni-bin-dir
          hostPath:
            path: /opt/cni/bin
        - name: cni-net-dir
          hostPath:
            path: /etc/cni/net.d
        # Mount in the etcd TLS secrets with mode 400.
        # See https://kubernetes.io/docs/concepts/configuration/secret/
        - name: etcd-certs
          secret:
            secretName: calico-etcd-secrets
            defaultMode: 0400
---

apiVersion: v1
kind: ServiceAccount
metadata:
  name: calico-node
  namespace: kube-system

---
# This manifest deploys the Calico Kubernetes controllers.
# See https://github.com/projectcalico/kube-controllers
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: calico-kube-controllers
  namespace: kube-system
  labels:
    k8s-app: calico-kube-controllers
  annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
spec:
  # The controllers can only have a single active instance.
  replicas: 1
  strategy:
    type: Recreate
  template:
    metadata:
      name: calico-kube-controllers
      namespace: kube-system
      labels:
        k8s-app: calico-kube-controllers
    spec:
      nodeSelector:
        beta.kubernetes.io/os: linux
      # The controllers must run in the host network namespace so that
      # it isn"t governed by policy that would prevent it from working.
      hostNetwork: true
      tolerations:
        # Mark the pod as a critical add-on for rescheduling.
        - key: CriticalAddonsOnly
          operator: Exists
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
      serviceAccountName: calico-kube-controllers
      containers:
        - name: calico-kube-controllers
          image: quay.io/calico/kube-controllers:v3.4.0
          env:
            # The location of the Calico etcd cluster.
            - name: ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_endpoints
            # Location of the CA certificate for etcd.
            - name: ETCD_CA_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_ca
            # Location of the client key for etcd.
            - name: ETCD_KEY_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_key
            # Location of the client certificate for etcd.
            - name: ETCD_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: calico-config
                  key: etcd_cert
            # Choose which controllers to run.
            - name: ENABLED_CONTROLLERS
              value: policy,namespace,serviceaccount,workloadendpoint,node
          volumeMounts:
            # Mount in the etcd TLS secrets.
            - mountPath: /calico-secrets
              name: etcd-certs
          readinessProbe:
            exec:
              command:
              - /usr/bin/check-status
              - -r
      volumes:
        # Mount in the etcd TLS secrets with mode 400.
        # See https://kubernetes.io/docs/concepts/configuration/secret/
        - name: etcd-certs
          secret:
            secretName: calico-etcd-secrets
            defaultMode: 0400

---

apiVersion: v1
kind: ServiceAccount
metadata:
  name: calico-kube-controllers
  namespace: kube-system
---

# Include a clusterrole for the kube-controllers component,
# and bind it to the calico-kube-controllers serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: calico-kube-controllers
rules:
  # Pods are monitored for changing labels.
  # The node controller monitors Kubernetes nodes.
  # Namespace and serviceaccount labels are used for policy.
  - apiGroups:
      - ""
    resources:
      - pods
      - nodes
      - namespaces
      - serviceaccounts
    verbs:
      - watch
      - list
  # Watch for changes to Kubernetes NetworkPolicies.
  - apiGroups:
      - networking.k8s.io
    resources:
      - networkpolicies
    verbs:
      - watch
      - list
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: calico-kube-controllers
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: calico-kube-controllers
subjects:
- kind: ServiceAccount
  name: calico-kube-controllers
  namespace: kube-system
---
# Include a clusterrole for the calico-node DaemonSet,
# and bind it to the calico-node serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: calico-node
rules:
  # The CNI plugin needs to get pods, nodes, and namespaces.
  - apiGroups: [""]
    resources:
      - pods
      - nodes
      - namespaces
    verbs:
      - get
  - apiGroups: [""]
    resources:
      - endpoints
      - services
    verbs:
      # Used to discover service IPs for advertisement.
      - watch
      - list
  - apiGroups: [""]
    resources:
      - nodes/status
    verbs:
      # Needed for clearing NodeNetworkUnavailable flag.
      - patch
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: calico-node
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: calico-node
subjects:
- kind: ServiceAccount
  name: calico-node
  namespace: kube-system
---

EOF
部署calico
kubectl apply -f calico.yml
設置ippool
執行：
calicoctl apply -f - << EOF
apiVersion: projectcalico.org/v3
kind: IPPool
metadata:
  name: default-ipv4-ippool
spec:
  cidr: 192.168.0.0/16
  ipipMode: CrossSubnet
  natOutgoing: true
EOF
部署node節點
執行主機設置的所有項。
執行加入操作：
kubeadm join nlb-sgt-k8sapiserver-test-4748f2f556591bb7.elb.us-west-2.amazonaws.com:6443 --token u9hmb3.gwfozvsz90k3yt9g --discovery-token-ca-cert-hash sha256:24c354cce46de9c1eb1a8358b9ba064166e87cf6c011fecaae3350c3910c215a

驗證：
 kubectl get nodes
NAME                                          STATUS   ROLES    AGE     VERSION
ip-172-31-17-44.us-west-2.compute.internal    Ready    master   4m2s    v1.13.0
ip-172-31-22-135.us-west-2.compute.internal   Ready    master   3m59s   v1.13.0
ip-172-31-22-208.us-west-2.compute.internal   Ready    master   16h     v1.13.0
ip-172-31-29-58.us-west-2.compute.internal    Ready       14h     v1.13.0
部署addon
部署aws的sts
kubectl apply -f https://raw.githubusercontent.com/kubernetes/kubernetes/master/cluster/addons/storage-class/aws/default.yaml
創建alb-ingress-controller
為subnet打標簽
標記AWS子網以允許入口控制器自動發現用于ALB的子網。

kubernetes.io/cluster/${cluster-name} must be set to owned or shared
kubernetes.io/role/internal-elb must be set to 1 or `` for internal LoadBalancers
kubernetes.io/role/elb must be set to 1 or `` for internet-facing LoadBalancers

rbac
kubectl apply -f https://raw.githubusercontent.com/kubernetes-sigs/aws-alb-ingress-controller/v1.0.1/docs/examples/rbac-role.yaml
按照如下yaml創建
# Application Load Balancer (ALB) Ingress Controller Deployment Manifest.
# This manifest details sensible defaults for deploying an ALB Ingress Controller.
# GitHub: https://github.com/kubernetes-sigs/aws-alb-ingress-controller
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: alb-ingress-controller
  name: alb-ingress-controller
  # Namespace the ALB Ingress Controller should run in. Does not impact which
  # namespaces it"s able to resolve ingress resource for. For limiting ingress
  # namespace scope, see --watch-namespace.
  namespace: kube-system
  annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
spec:
  replicas: 1
  selector:
    matchLabels:
      app: alb-ingress-controller
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      annotations:
        iam.amazonaws.com/role: arn:aws:iam::1234567:role/Role-KubernetesIngressController-test
      labels:
        app: alb-ingress-controller
    spec:
      containers:
        - args:
            # Limit the namespace where this ALB Ingress Controller deployment will
            # resolve ingress resources. If left commented, all namespaces are used.
            # - --watch-namespace=your-k8s-namespace

            # Setting the ingress-class flag below ensures that only ingress resources with the
            # annotation kubernetes.io/ingress.class: "alb" are respected by the controller. You may
            # choose any class you"d like for this controller to respect.
            - --ingress-class=alb

            # Name of your cluster. Used when naming resources created
            # by the ALB Ingress Controller, providing distinction between
            # clusters.
            - --cluster-name=k8s-us-west-test-1

            # AWS VPC ID this ingress controller will use to create AWS resources.
            # If unspecified, it will be discovered from ec2metadata.
            # - --aws-vpc-id=vpc-xxxxxx

            # AWS region this ingress controller will operate in.
            # If unspecified, it will be discovered from ec2metadata.
            # List of regions: http://docs.aws.amazon.com/general/latest/gr/rande.html#vpc_region
            # - --aws-region=us-west-1

            # Enables logging on all outbound requests sent to the AWS API.
            # If logging is desired, set to true.
            # - ---aws-api-debug
            # Maximum number of times to retry the aws calls.
            # defaults to 10.
            # - --aws-max-retries=10
          env:
            # AWS key id for authenticating with the AWS API.
            # This is only here for examples. It"s recommended you instead use
            # a project like kube2iam for granting access.
            #- name: AWS_ACCESS_KEY_ID
            #  value: KEYVALUE

            # AWS key secret for authenticating with the AWS API.
            # This is only here for examples. It"s recommended you instead use
            # a project like kube2iam for granting access.
            #- name: AWS_SECRET_ACCESS_KEY
            #  value: SECRETVALUE
          # Repository location of the ALB Ingress Controller.
          image: 894847497797.dkr.ecr.us-west-2.amazonaws.com/aws-alb-ingress-controller:v1.0.1
          imagePullPolicy: Always
          name: server
          resources: {}
          terminationMessagePath: /dev/termination-log
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      securityContext: {}
      terminationGracePeriodSeconds: 30
      serviceAccountName: alb-ingress
      serviceAccount: alb-ingress
注意cluster-name 指定集群name。
創建dashbord
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml

需要創建一個admin用戶并授予admin角色綁定，使用下面的yaml文件創建admin用戶并賦予他管理員權限，然后可以通過token登陸dashbaord，該文件見admin-role.yaml
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: admin
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
  kind: ClusterRole
  name: cluster-admin
  apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
  name: admin
  namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin
  namespace: kube-system
  labels:
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile

獲取token
kubectl -n kube-system get secret|grep admin-token
admin-token-cs4gs                                kubernetes.io/service-account-token   3      10m

kubectl describe secret admin-token-cs4gs -n kube-system
重新部署操作
kubeadm reset

iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X

ipvsadm --clear

ifconfig tunl0 down

ip link delete tunl0

升級kubeadm等
升級kubeadm
export VERSION=$(curl -sSL https://dl.k8s.io/release/stable.txt) # or manually specify a released Kubernetes version
export ARCH=amd64 # or: arm, arm64, ppc64le, s390x
curl -sSL https://dl.k8s.io/release/${VERSION}/bin/linux/${ARCH}/kubeadm > /usr/bin/kubeadm
chmod a+rx /usr/bin/kubeadm
升級kubectl
export VERSION=$(curl -sSL https://dl.k8s.io/release/stable.txt) # or manually specify a released Kubernetes version
export ARCH=amd64 # or: arm, arm64, ppc64le, s390x
curl -sSL https://dl.k8s.io/release/${VERSION}/bin/linux/${ARCH}/kubectl > /usr/bin/kubectl
chmod a+rx /usr/bin/kubectl
升級kubelet
export VERSION=$(curl -sSL https://dl.k8s.io/release/stable.txt) # or manually specify a released Kubernetes version
export ARCH=amd64 # or: arm, arm64, ppc64le, s390x
curl -sSL https://dl.k8s.io/release/${VERSION}/bin/linux/${ARCH}/kubelet > /usr/bin/kubelet
chmod a+rx /usr/bin/kubelet