kubernetes v1.11.0 从代码编译到部署文档-部署

其他 2018-09-18 09:12:32 阅读次数: 0
版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_21816375/article/details/81983763

系统环境

[root@master-47-35 ansible]# uname -a 
Linux master-47-35 3.10.0-327.4.5.el7.x86_64 #1 SMP Mon Jan 25 22:07:14 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@master-47-35 ansible]# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core)

机器信息

10.39.47.12 slave-47-12
10.39.47.35 master-47-35
10.39.47.33 slave-47-33 
10.39.47.32 slave-47-32
10.39.47.34 master-47-34
10.39.47.36 master-47-36

安装详情

制作证书

1.安装 cfssl

mkdir -p /opt/local/cfssl

cd /opt/local/cfssl

wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
mv cfssl_linux-amd64 cfssl

wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
mv cfssljson_linux-amd64 cfssljson

wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
mv cfssl-certinfo_linux-amd64 cfssl-certinfo

chmod +x *

安装结果

[root@master-47-35 cfssl]# ls -l
total 18808
-rwxr-xr-x 1 root root 10376657 Mar 30  2016 cfssl
-rwxr-xr-x 1 root root  6595195 Mar 30  2016 cfssl-certinfo
-rwxr-xr-x 1 root root  2277873 Mar 30  2016 cfssljson

创建 CA 证书配置

vi  config.json
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "kubernetes": {
        "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ],
        "expiry": "87600h"
      }
    }
  }
}
vi csr.json

{
  "CN": "kubernetes",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}

生成 CA 证书和私钥

cd /opt/ssl/

/opt/local/cfssl/cfssl gencert -initca csr.json | /opt/local/cfssl/cfssljson -bare ca
[root@master-47-35 ssl]# ls -lt
total 20
-rw-r--r-- 1 root root 1001 Aug 23 17:08 ca.csr
-rw------- 1 root root 1679 Aug 23 17:08 ca-key.pem
-rw-r--r-- 1 root root 1359 Aug 23 17:08 ca.pem
-rw-r--r-- 1 root root  208 Aug 23 17:07 csr.json
-rw-r--r-- 1 root root  292 Aug 23 17:05 config.json

分发证书(ansible工具同步,关于如何使用ansible工具请自行研究)

[root@master-47-35 ansible]# cat hosts 
[etcd]
10.39.47.35
10.39.47.34
10.39.47.36

[master]
10.39.47.35
10.39.47.36
10.39.47.34

[node]
10.39.47.32
10.39.47.12
10.39.47.33

[all]
10.39.47.32
10.39.47.34
10.39.47.36
10.39.47.35
10.39.47.12
10.39.47.33

[root@master-47-35 ansible]# ansible -i hosts all -m copy -a 'src=/opt/ssl/ dest=/etc/kubernetes/ssl'
10.39.47.32 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.12 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.34 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.35 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.36 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.33 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}

在每台机器上安装docker

ansible -i hosts all -m shell -a "yum install docker -y"

ansible -i hosts all -m shell -a "systemctl enable docker"

ansible -i hosts all -m shell -a "systemctl start docker"

查看docker 状态

ansible -i hosts all -m shell -a "systemctl status docker"

安装etcd 集群

下载etcd

wget https://github.com/coreos/etcd/releases/download/v3.2.18/etcd-v3.2.18-linux-amd64.tar.gz
tar zxvf etcd-v3.2.18-linux-amd64.tar.gz 

[root@master-47-35 ansible]# ansible -i hosts etcd -m copy -a 'src=./etcd/etcdctl dest=/usr/bin/'

创建 etcd 证书

cd /opt/ssl/

vi etcd-csr.json
{
  "CN": "etcd",
  "hosts": [
    "127.0.0.1",
    "10.39.47.34",
    "10.39.47.36",
    "10.39.47.35"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
# 生成 etcd   密钥

/opt/local/cfssl/cfssl gencert -ca=/opt/ssl/ca.pem \
  -ca-key=/opt/ssl/ca-key.pem \
  -config=/opt/ssl/config.json \
  -profile=kubernetes etcd-csr.json | /opt/local/cfssl/cfssljson -bare etcd

[root@master-47-35 ssl]# ls -lt etcd*
-rw-r--r-- 1 root root 1062 Aug 23 18:20 etcd.csr
-rw------- 1 root root 1679 Aug 23 18:20 etcd-key.pem
-rw-r--r-- 1 root root 1436 Aug 23 18:20 etcd.pem
-rw-r--r-- 1 root root  293 Aug 23 18:19 etcd-csr.json
# 检查证书

[root@master-47-35 ssl]# /opt/local/cfssl/cfssl-certinfo -cert etcd.pem



# 拷贝到etcd服务器

[root@master-47-35 ansible]# ansible -i hosts etcd -m copy -a 'src=/opt/ssl/ dest=/etc/kubernetes/ssl/'
10.39.47.35 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.34 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}
10.39.47.36 | SUCCESS => {
    "changed": true, 
    "dest": "/etc/kubernetes/ssl/", 
    "src": "/opt/ssl/"
}

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'ls -l /etc/kubernetes/ssl/'
10.39.47.34 | SUCCESS | rc=0 >>
total 36
-rw-r--r-- 1 root root 1001 Aug 23 17:12 ca.csr
-rw-r--r-- 1 root root 1679 Aug 23 17:12 ca-key.pem
-rw-r--r-- 1 root root 1359 Aug 23 17:12 ca.pem
-rw-r--r-- 1 root root  292 Aug 23 17:12 config.json
-rw-r--r-- 1 root root  208 Aug 23 17:12 csr.json
-rw-r--r-- 1 root root 1062 Aug 23 18:30 etcd.csr
-rw-r--r-- 1 root root  293 Aug 23 18:30 etcd-csr.json
-rw-r--r-- 1 root root 1679 Aug 23 18:30 etcd-key.pem
-rw-r--r-- 1 root root 1436 Aug 23 18:30 etcd.pem

10.39.47.35 | SUCCESS | rc=0 >>
total 36
-rw-r--r-- 1 root root 1001 Aug 23 17:12 ca.csr
-rw-r--r-- 1 root root 1679 Aug 23 17:12 ca-key.pem
-rw-r--r-- 1 root root 1359 Aug 23 17:12 ca.pem
-rw-r--r-- 1 root root  292 Aug 23 17:12 config.json
-rw-r--r-- 1 root root  208 Aug 23 17:12 csr.json
-rw-r--r-- 1 root root 1062 Aug 23 18:30 etcd.csr
-rw-r--r-- 1 root root  293 Aug 23 18:30 etcd-csr.json
-rw-r--r-- 1 root root 1679 Aug 23 18:30 etcd-key.pem
-rw-r--r-- 1 root root 1436 Aug 23 18:30 etcd.pem

10.39.47.36 | SUCCESS | rc=0 >>
total 36
-rw-r--r-- 1 root root 1001 Aug 23 17:12 ca.csr
-rw-r--r-- 1 root root 1679 Aug 23 17:12 ca-key.pem
-rw-r--r-- 1 root root 1359 Aug 23 17:12 ca.pem
-rw-r--r-- 1 root root  292 Aug 23 17:12 config.json
-rw-r--r-- 1 root root  208 Aug 23 17:12 csr.json
-rw-r--r-- 1 root root 1062 Aug 23 18:30 etcd.csr
-rw-r--r-- 1 root root  293 Aug 23 18:30 etcd-csr.json
-rw-r--r-- 1 root root 1679 Aug 23 18:30 etcd-key.pem
-rw-r--r-- 1 root root 1436 Aug 23 18:30 etcd.pem


# 如果 etcd 非 root 用户，读取证书会提示没权限

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'chmod 644 /etc/kubernetes/ssl/etcd*'
 [WARNING]: Consider using file module with mode rather than running chmod

10.39.47.36 | SUCCESS | rc=0 >>


10.39.47.34 | SUCCESS | rc=0 >>


10.39.47.35 | SUCCESS | rc=0 >>

修改 etcd 配置

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'useradd etcd;mkdir -p /opt/etcd;chown -R etcd:etcd /opt/etcd'
# etcd-1


vi /etc/systemd/system/etcd.service


[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
WorkingDirectory=/opt/etcd/
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/usr/bin/etcd \
  --name=etcd-47-34 \
  --cert-file=/etc/kubernetes/ssl/etcd.pem \
  --key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --peer-cert-file=/etc/kubernetes/ssl/etcd.pem \
  --peer-key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --initial-advertise-peer-urls=https://10.39.47.34:2380 \
  --listen-peer-urls=https://10.39.47.34:2380 \
  --listen-client-urls=https://10.39.47.34:2379,http://127.0.0.1:2379 \
  --advertise-client-urls=https://10.39.47.34:2379 \
  --initial-cluster-token=k8s-etcd-cluster \
  --initial-cluster=etcd-47-34=https://10.39.47.34:2380,etcd-47-35=https://10.39.47.35:2380,etcd-47-36=https://10.39.47.36:2380 \
  --initial-cluster-state=new \
  --data-dir=/opt/etcd/
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
# etcd-2


vi /etc/systemd/system/etcd.service


[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
WorkingDirectory=/opt/etcd/
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/usr/bin/etcd \
  --name=etcd-47-35 \
  --cert-file=/etc/kubernetes/ssl/etcd.pem \
  --key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --peer-cert-file=/etc/kubernetes/ssl/etcd.pem \
  --peer-key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --initial-advertise-peer-urls=https://10.39.47.35:2380 \
  --listen-peer-urls=https://10.39.47.35:2380 \
  --listen-client-urls=https://10.39.47.35:2379,http://127.0.0.1:2379 \
  --advertise-client-urls=https://10.39.47.35:2379 \
  --initial-cluster-token=k8s-etcd-cluster \
  --initial-cluster=etcd-47-34=https://10.39.47.34:2380,etcd-47-35=https://10.39.47.35:2380,etcd-47-36=https://10.39.47.36:2380 \
  --initial-cluster-state=new \
  --data-dir=/opt/etcd/
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
# etcd-3


vi /etc/systemd/system/etcd.service


[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
WorkingDirectory=/opt/etcd/
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/usr/bin/etcd \
  --name=etcd-47-36 \
  --cert-file=/etc/kubernetes/ssl/etcd.pem \
  --key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --peer-cert-file=/etc/kubernetes/ssl/etcd.pem \
  --peer-key-file=/etc/kubernetes/ssl/etcd-key.pem \
  --trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
  --initial-advertise-peer-urls=https://10.39.47.36:2380 \
  --listen-peer-urls=https://10.39.47.36:2380 \
  --listen-client-urls=https://10.39.47.36:2379,http://127.0.0.1:2379 \
  --advertise-client-urls=https://10.39.47.36:2379 \
  --initial-cluster-token=k8s-etcd-cluster \
  --initial-cluster=etcd-47-34=https://10.39.47.34:2380,etcd-47-35=https://10.39.47.35:2380,etcd-47-36=https://10.39.47.36:2380 \
  --initial-cluster-state=new \
  --data-dir=/opt/etcd/
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

改权限etcd 二进制文件的权限

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'chown -R etcd:etcd /usr/bin/etcd'
 [WARNING]: Consider using file module with owner rather than running chown
[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'chmod +x /usr/bin/etcd'
 [WARNING]: Consider using file module with mode rather than running chmod

10.39.47.35 | SUCCESS | rc=0 >>


10.39.47.36 | SUCCESS | rc=0 >>


10.39.47.34 | SUCCESS | rc=0 >>

启动 etcd

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'systemctl start etcd'

查看状态

[root@master-47-35 ansible]# ansible -i hosts etcd -m shell -a 'systemctl status etcd'

查看 etcd 集群状态

etcdctl --endpoints=https://10.39.47.34:2379,https://10.39.47.35:2379,https://10.39.47.36:2379\
        --cert-file=/etc/kubernetes/ssl/etcd.pem \
        --ca-file=/etc/kubernetes/ssl/ca.pem \
        --key-file=/etc/kubernetes/ssl/etcd-key.pem \
        cluster-health

member 33e2f0f1818f1c75 is healthy: got healthy result from https://10.39.47.35:2379
member 3bf13ec35a47ecea is healthy: got healthy result from https://10.39.47.34:2379
member 7ac684c93b663782 is healthy: got healthy result from https://10.39.47.36:2379
cluster is healthy

查看 etcd 集群成员

etcdctl --endpoints=https://10.39.47.34:2379,https://10.39.47.35:2379,https://10.39.47.36:2379\
        --cert-file=/etc/kubernetes/ssl/etcd.pem \
        --ca-file=/etc/kubernetes/ssl/ca.pem \
        --key-file=/etc/kubernetes/ssl/etcd-key.pem \
        member list

33e2f0f1818f1c75: name=etcd-47-35 peerURLs=https://10.39.47.35:2380 clientURLs=https://10.39.47.35:2379 isLeader=false
3bf13ec35a47ecea: name=etcd-47-34 peerURLs=https://10.39.47.34:2380 clientURLs=https://10.39.47.34:2379 isLeader=true
7ac684c93b663782: name=etcd-47-36 peerURLs=https://10.39.47.36:2380 clientURLs=https://10.39.47.36:2379 isLeader=false

配置 Kubernetes 集群

安装kubectl

[root@master-47-35 ansible]# ansible -i hosts etcd -m copy -a 'src=kubectl dest=/usr/bin'

创建 admin 证书

kubectl 与 kube-apiserver 的安全端口通信，需要为安全通信提供 TLS 证书和秘钥。
cd /opt/ssl/

vi admin-csr.json


{
  "CN": "admin",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "system:masters",
      "OU": "System"
    }
  ]
}
# 生成 admin 证书和私钥
cd /opt/ssl/

/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
  -ca-key=/etc/kubernetes/ssl/ca-key.pem \
  -config=/opt/ssl/config.json \
  -profile=kubernetes admin-csr.json | /opt/local/cfssl/cfssljson -bare admin


# 查看生成

[root@master-47-35 ssl]# ls admin*
admin.csr  admin-csr.json  admin-key.pem  admin.pem

#分配证书
[root@master-47-35 ansible]# ansible -i hosts all -m copy -a 'src=/opt/ssl/ dest=/etc/kubernetes/ssl'

生成 kubernetes 配置文件,生成证书相关的配置文件存储与 /root/.kube 目录中

# 配置 kubernetes 集群

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/ssl/ca.pem \
  --embed-certs=true \
  --server=https://10.39.47.35:6443 #10.39.47.34:6443 10.39.47.36:6443 一样的道理


# 配置 客户端认证

kubectl config set-credentials admin \
  --client-certificate=/etc/kubernetes/ssl/admin.pem \
  --embed-certs=true \
  --client-key=/etc/kubernetes/ssl/admin-key.pem



kubectl config set-context kubernetes \
  --cluster=kubernetes \
  --user=admin


kubectl config use-context kubernetes

创建 kubernetes 证书

cd /opt/ssl

vi kubernetes-csr.json

{
  "CN": "kubernetes",
  "hosts": [
    "127.0.0.1",
    "10.39.47.34",
    "10.39.47.35",
    "10.39.47.36",
    "10.254.0.1",
    "kubernetes",
    "kubernetes.default",
    "kubernetes.default.svc",
    "kubernetes.default.svc.cluster",
    "kubernetes.default.svc.cluster.local"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}


## 这里 hosts 字段中 三个 IP 分别为 127.0.0.1 本机， 10.39.47.34 10.39.47.35 和 10.39.47.36 为 Master 的IP，多个Master需要写多个。  10.254.0.1 为 kubernetes SVC 的 IP， 一般是 部署网络的第一个IP , 如: 10.254.0.1 ， 在启动完成后，我们使用   kubectl get svc ， 就可以查看到

生成 kubernetes 证书和私钥

/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
  -ca-key=/etc/kubernetes/ssl/ca-key.pem \
  -config=/opt/ssl/config.json \
  -profile=kubernetes kubernetes-csr.json | /opt/local/cfssl/cfssljson -bare kubernetes

# 查看生成

[root@master-47-35 ssl]# ls -l kubernetes*
-rw-r--r-- 1 root root 1261 Aug 23 19:46 kubernetes.csr
-rw-r--r-- 1 root root  473 Aug 23 19:46 kubernetes-csr.json
-rw------- 1 root root 1679 Aug 23 19:46 kubernetes-key.pem
-rw-r--r-- 1 root root 1627 Aug 23 19:46 kubernetes.pem

# 拷贝到目录
ansible -i hosts etcd -m copy -a 'src=/opt/ssl/ dest=/etc/kubernetes/ssl'

配置 kube-apiserver

kubelet 首次启动时向 kube-apiserver 发送 TLS Bootstrapping 请求，kube-apiserver 验证 kubelet 请求中的 token 是否与它配置的 token 一致，如果一致则自动为 kubelet生成证书和秘钥。
# 生成 token

[root@master-47-35 ansible]# head -c 16 /dev/urandom | od -An -t x | tr -d ' '
3af352ae41e9c7d8d700825f075602ec


# 创建 encryption-config.yaml 配置

cat > encryption-config.yaml <<EOF
kind: EncryptionConfig
apiVersion: v1
resources:
  - resources:
      - secrets
    providers:
      - aescbc:
          keys:
            - name: key1
              secret: 3af352ae41e9c7d8d700825f075602ec
      - identity: {}
EOF


# 拷贝

[root@master-47-35 ansible]# ansible -i hosts all -m shell -a 'ls -l /etc/kubernetes/'

创建 目录/etc/kubernetes/manifests以及kube-apiserver.json文件

[root@master-47-35 manifests]# cat kube-apiserver.json 
{
  "kind": "Pod",
  "apiVersion": "v1",
  "metadata": {
    "name": "kube-apiserver",
    "namespace": "kube-system",
    "creationTimestamp": null,
    "labels": {
      "component": "kube-apiserver",
      "tier": "control-plane"
    }
  },
  "spec": {
    "volumes": [
      {
        "name": "certs",
        "hostPath": {
          "path": "/etc/ssl/certs"
        }
      },
      {
        "name": "pki",
        "hostPath": {
          "path": "/etc/kubernetes"
        }
      }
    ],
    "containers": [
      {
        "name": "kube-apiserver",
        "image": "harbor.enncloud.cn/enncloud/hyperkube-amd64:v1.11.2",
        "imagePullPolicy": "Always",
        "command": [
          "/apiserver",
          "--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,ResourceQuota",
          "--anonymous-auth=false",
          "--experimental-encryption-provider-config=/etc/kubernetes/encryption-config.yaml", 
          "--advertise-address=10.39.47.35",
          "--allow-privileged=true",
          "--apiserver-count=3",
          "--audit-policy-file=/etc/kubernetes/audit-policy.yaml",
          "--audit-log-maxage=30",
          "--audit-log-maxbackup=3",
          "--audit-log-maxsize=100",
          "--audit-log-path=/var/log/kubernetes/audit.log",
          "--authorization-mode=Node,RBAC",
          "--bind-address=10.39.47.35",
          "--secure-port=6443",
          "--client-ca-file=/etc/kubernetes/ssl/ca.pem",
          "--kubelet-client-certificate=/etc/kubernetes/ssl/kubernetes.pem", 
          "--kubelet-client-key=/etc/kubernetes/ssl/kubernetes-key.pem",
          "--enable-swagger-ui=true",
          "--etcd-cafile=/etc/kubernetes/ssl/ca.pem",
          "--etcd-certfile=/etc/kubernetes/ssl/etcd.pem",
          "--etcd-keyfile=/etc/kubernetes/ssl/etcd-key.pem",
          "--etcd-servers=https://10.39.47.35:2379,https://10.39.47.34:2379,https://10.39.47.36:2379", 
          "--event-ttl=1h",
          "--kubelet-https=true", 
          "--insecure-bind-address=127.0.0.1",
          "--insecure-port=8080",
          "--service-account-key-file=/etc/kubernetes/ssl/ca-key.pem",
          "--service-cluster-ip-range=10.254.0.0/18",
          "--service-node-port-range=30000-32000",
          "--tls-cert-file=/etc/kubernetes/ssl/kubernetes.pem", 
          "--tls-private-key-file=/etc/kubernetes/ssl/kubernetes-key.pem",
          "--enable-bootstrap-token-auth",
          "--v=2"
        ],
        "resources": {
          "requests": {
            "cpu": "250m"
          }
        },
        "volumeMounts": [
          {
            "name": "certs",
            "mountPath": "/etc/ssl/certs"
          },
          {
            "name": "pki",
            "readOnly": true,
            "mountPath": "/etc/kubernetes/"
          }
        ],
        "livenessProbe": {
          "httpGet": {
            "path": "/healthz",
            "port": 8080,
            "host": "127.0.0.1"
          },
          "initialDelaySeconds": 15,
          "timeoutSeconds": 15,
          "failureThreshold": 8
        }
      }
    ],
    "hostNetwork": true
  }
}

创建kube-controller-manager.json 文件

[root@master-47-35 manifests]# cat kube-controller-manager.json 
{
  "kind": "Pod",
  "apiVersion": "v1",
  "metadata": {
    "name": "kube-controller-manager",
    "namespace": "kube-system",
    "labels": {
      "component": "kube-controller-manager",
      "tier": "control-plane"
    }
  },
  "spec": {
    "volumes": [
      {
        "name": "certs",
        "hostPath": {
          "path": "/etc/ssl/certs"
        }
      },
      {
        "name": "pki",
        "hostPath": {
          "path": "/etc/kubernetes"
        }
      },
      {
        "name": "plugin",
        "hostPath": {
          "path": "/usr/libexec/kubernetes/kubelet-plugins"
        }
      },
      {
        "name": "qingcloud",
        "hostPath": {
          "path": "/etc/qingcloud"
        }
      }
    ],
    "containers": [
      {
        "name": "kube-controller-manager",
        "image": "harbor.enncloud.cn/enncloud/hyperkube-amd64:v1.11.2",
        "imagePullPolicy": "Always",
        "command": [
          "/controller-manager",
          "--address=127.0.0.1",
          "--master=http://127.0.0.1:8080",
          "--allocate-node-cidrs=false",
          "--service-cluster-ip-range=10.254.0.0/18",
          "--cluster-cidr=10.254.64.0/18",
          "--cluster-name=kubernetes",
          "--cluster-signing-cert-file=/etc/kubernetes/ssl/ca.pem",
          "--cluster-signing-key-file=/etc/kubernetes/ssl/ca-key.pem",
          "--service-account-private-key-file=/etc/kubernetes/ssl/ca-key.pem",
          "--root-ca-file=/etc/kubernetes/ssl/ca.pem",
          "--experimental-cluster-signing-duration=86700h0m0s",
          "--leader-elect=true",
          "--controllers=*,tokencleaner,bootstrapsigner",
          "--feature-gates=RotateKubeletServerCertificate=true",
          "--horizontal-pod-autoscaler-use-rest-clients",
          "--horizontal-pod-autoscaler-sync-period=60s",
          "--node-monitor-grace-period=40s",
          " --node-monitor-period=5s",
          "--pod-eviction-timeout=5m0s",
          "--v=10"
        ],
        "resources": {
          "requests": {
            "cpu": "200m"
          }
        },
        "volumeMounts": [
          {
            "name": "certs",
            "mountPath": "/etc/ssl/certs"
          },
          {
            "name": "pki",
            "readOnly": true,
            "mountPath": "/etc/kubernetes/"
          }, 
                        {
            "name": "plugin",
            "mountPath": "/usr/libexec/kubernetes/kubelet-plugins"
          },
          {
            "name": "qingcloud",
            "readOnly": true,
            "mountPath": "/etc/qingcloud"
          }

        ],
        "livenessProbe": {
          "httpGet": {
            "path": "/healthz",
            "port": 10252,
            "host": "127.0.0.1"
          },
          "initialDelaySeconds": 15,
          "timeoutSeconds": 15,
          "failureThreshold": 8
        }
      }
    ],
    "hostNetwork": true
  }
}

创建kube-scheduler.json 文件

{
  "kind": "Pod",
  "apiVersion": "v1",
  "metadata": {
    "name": "kube-scheduler",
    "namespace": "kube-system",
    "creationTimestamp": null,
    "labels": {
      "component": "kube-scheduler",
      "tier": "control-plane"
    }
  },
  "spec": {
    "containers": [
      {
        "name": "kube-scheduler",
        "image": "harbor.enncloud.cn/enncloud/hyperkube-amd64:v1.11.2",
        "imagePullPolicy": "Always",
        "command": [
          "/scheduler",
          "--address=127.0.0.1",
          "--master=http://127.0.0.1:8080",
          "--leader-elect=true",
          "--v=2"
        ],
        "resources": {
          "requests": {
            "cpu": "100m" }
        },
        "livenessProbe": {
          "httpGet": {
            "path": "/healthz",
            "port": 10251,
            "host": "127.0.0.1" },
          "initialDelaySeconds": 15,
          "timeoutSeconds": 15,
          "failureThreshold": 8
        }
      }
    ],
    "hostNetwork": true
  }
}

配置 kubelet 认证

kubelet 授权 kube-apiserver 的一些操作 exec run logs 等

生成 bootstrap.kubeconfig

# 配置集群参数
kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/ssl/ca.pem \
  --embed-certs=true \
  --server=https://10.39.47.35:6443 \
  --kubeconfig=bootstrap.kubeconfig

# 配置客户端认证

kubectl config set-credentials kubelet-bootstrap \
  --token=3af352ae41e9c7d8d700825f075602ec \
  --kubeconfig=bootstrap.kubeconfig


# 配置关联

kubectl config set-context default \
  --cluster=kubernetes \
  --user=kubelet-bootstrap \
  --kubeconfig=bootstrap.kubeconfig


# 配置默认关联
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig

# 拷贝生成的 bootstrap.kubeconfig 文件

[root@master-47-35 ansible]# ansible -i hosts all -m copy -a 'src=/etc/kubernetes dest=/etc/kubernetes'
mkdir /var/lib/kubelet

创建kubelet.service

[root@master-47-35 kubernetes]# cat /etc/systemd/system/kubelet.service 
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/local/bin/kubelet \
  --hostname-override=master-47-35 \
  --pod-infra-container-image=harbor.enncloud.cn/paas/pause-amd64:3.1 \
  --bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
  --pod-manifest-path=/etc/kubernetes/manifests  \
  --kubeconfig=/etc/kubernetes/kubelet.config \
  --config=/etc/kubernetes/kubelet.config.json \
  --cert-dir=/etc/kubernetes/pki \
  --allow-privileged=true \
  --kube-reserved cpu=500m,memory=512m \
  --image-gc-high-threshold=85  --image-gc-low-threshold=70 \
  --logtostderr=true \
  --enable-controller-attach-detach=true --volume-plugin-dir=/usr/libexec/kubernetes/kubelet-plugins/volume/exec/ \
  --v=2

[Install]
WantedBy=multi-user.target

创建完成之后，启动kubelet 

# RBAC 只需创建一次就可以

kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernetes

组件信息

[root@master-47-35 kubernetes]# kubectl get cs 
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
controller-manager   Healthy   ok                   
etcd-1               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}

创建 bootstrap kubeconfig 文件

 mkdir -p /var/log/filelog/containers

部署的过程中出现了这个问题

Aug 24 15:34:54 master-47-35 kubelet[25499]: E0824 15:34:54.766732   25499 summary.go:102] Failed to get system container stats for "/system.slice/kubelet.service": failed to get cgroup stats for "/system.slice/kubelet.service": failed to get container info for "/system.slice/kubelet.service": unknown container "/system.slice/kubelet.service"
Aug 24 15:34:54 master-47-35 kubelet[25499]: E0824 15:34:54.766760   25499 summary.go:102] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service": failed to get container info for "/system.slice/docker.service": unknown container "/system.slice/docker.service"

解决办法,相关issues/4049
issues/56850

创建/etc/systemd/system/kubelet.service.d/11-cgroups.conf文件，内容如下

[Service]
CPUAccounting=true
MemoryAccounting=true

kubelet启动参数,添加以下两个启动参数

--runtime-cgroups=/systemd/system.slice \
--kubelet-cgroups=/systemd/system.slice \

内容如下

[root@master-47-35 ~]# cat /etc/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/local/bin/kubelet \
  --hostname-override=master-47-35 \
  --pod-infra-container-image=harbor.enncloud.cn/paas/pause-amd64:3.1 \
  --bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
  --pod-manifest-path=/etc/kubernetes/manifests  \
  --kubeconfig=/etc/kubernetes/kubelet.config \
  --config=/etc/kubernetes/kubelet.config.json \
  --cert-dir=/etc/kubernetes/pki \
  --runtime-cgroups=/systemd/system.slice \
  --kubelet-cgroups=/systemd/system.slice \
  --allow-privileged=true \
  --kube-reserved cpu=500m,memory=512m \
  --image-gc-high-threshold=85  --image-gc-low-threshold=70 \
  --logtostderr=true \
  --enable-controller-attach-detach=true --volume-plugin-dir=/usr/libexec/kubernetes/kubelet-plugins/volume/exec/ \
  --v=2

[Install]
WantedBy=multi-user.target

重启kubelet

systemctl daemon-reload
systemctl restart kubelet

查看token list

kubeadm token list --kubeconfig ~/.kube/config

配置token 

# 生成 10.39.47.36 的 bootstrap.kubeconfig

# 配置集群参数
kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/ssl/ca.pem \
  --embed-certs=true \
  --server=https://10.39.47.35:6443 \
  --kubeconfig=master-47-36-bootstrap.kubeconfig

# 配置客户端认证

kubectl config set-credentials kubelet-bootstrap \
  --token=7uwvcs.5ai2ygtwsofeuxa5 \
  --kubeconfig=master-47-36-bootstrap.kubeconfig


# 配置关联

kubectl config set-context default \
  --cluster=kubernetes \
  --user=kubelet-bootstrap \
  --kubeconfig=master-47-36-bootstrap.kubeconfig


# 配置默认关联
kubectl config use-context default --kubeconfig=master-47-36-bootstrap.kubeconfig

# 拷贝生成的 master-47-36-bootstrap.kubeconfig 文件

mv master-47-36-bootstrap.kubeconfig /etc/kubernetes/bootstrap.kubeconfig
[root@master-47-34 kubernetes]# kubectl get nodes 
NAME           STATUS    ROLES     AGE       VERSION
master-47-34   Ready     <none>    2m        v1.11.0-1+feebbe2b16f546
master-47-35   Ready     <none>    2h        v1.11.0-1+feebbe2b16f546
master-47-36   Ready     <none>    17m       v1.11.0-1+feebbe2b16f546

配置 kube-proxy

# 证书方面由于我们node端没有装 cfssl
# 我们回到 master 端 机器 去配置证书，然后拷贝过来


vi kube-proxy-csr.json

{
  "CN": "system:kube-proxy",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "ShenZhen",
      "L": "ShenZhen",
      "O": "k8s",
      "OU": "System"
    }
  ]
}

生成 kube-proxy 证书和私钥

/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
  -ca-key=/etc/kubernetes/ssl/ca-key.pem \
  -config=/opt/ssl/config.json \
  -profile=kubernetes  kube-proxy-csr.json | /opt/local/cfssl/cfssljson -bare kube-proxy

[root@master-47-35 ssl]# ls kube-proxy*
kube-proxy.csr  kube-proxy-csr.json  kube-proxy-key.pem  kube-proxy.pem

创建 kube-proxy kubeconfig 文件

# 配置集群

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/ssl/ca.pem \
  --embed-certs=true \
  --server=https://10.39.47.35:6443 \
  --kubeconfig=kube-proxy.kubeconfig


# 配置客户端认证

kubectl config set-credentials kube-proxy \
  --client-certificate=/etc/kubernetes/ssl/kube-proxy.pem \
  --client-key=/etc/kubernetes/ssl/kube-proxy-key.pem \
  --embed-certs=true \
  --kubeconfig=kube-proxy.kubeconfig


# 配置关联

kubectl config set-context default \
  --cluster=kubernetes \
  --user=kube-proxy \
  --kubeconfig=kube-proxy.kubeconfig



# 配置默认关联
kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

# 拷贝到需要的 node 端里

   ansible -i hosts all -m copy -a 'src=kube-proxy.csr dest=/etc/kubernetes/pki/'
   ansible -i hosts all -m copy -a 'src=kube-proxy-csr.json dest=/etc/kubernetes/pki/'
   ansible -i hosts all -m copy -a 'src=kube-proxy-key.pem dest=/etc/kubernetes/pki/'
   ansible -i hosts all -m copy -a 'src=kube-proxy.pem dest=/etc/kubernetes/pki/'
ansible -i hosts all -m copy -a 'src=kube-proxy.kubeconfig dest=/etc/kubernetes/'

安装calico

需要在kubelet服务启动参数添加--network-plugin=cni \参数

wget http://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/hosted/calico.yaml

wget http://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/rbac.yaml

#所需镜像
[root@master-47-35 calico]# cat calico.yaml | grep "image"
          image: quay.io/calico/node:v3.2.1
          image: quay.io/calico/cni:v3.2.1
          image: quay.io/calico/kube-controllers:v3.2.1

配置 calico

 etcd_endpoints: "https://10.39.47.34:2379,https://10.39.47.35:2379,https://10.39.47.36:2379"

  # If you're using TLS enabled etcd uncomment the following.
  # You must also populate the Secret below with these files.
  etcd_ca: "/calico-secrets/etcd-ca"
  etcd_cert: "/calico-secrets/etcd-cert"
  etcd_key: "/calico-secrets/etcd-key"


# 这里面要写入 base64 的信息


data:
  etcd-key: (cat /etc/kubernetes/ssl/etcd-key.pem | base64 | tr -d '\n')
  etcd-cert: (cat /etc/kubernetes/ssl/etcd.pem | base64 | tr -d '\n')
  etcd-ca: (cat /etc/kubernetes/ssl/ca.pem | base64 | tr -d '\n')




 - name: CALICO_IPV4POOL_CIDR
              value: "10.253.0.0/18"

创建calico服务

[root@master-47-35 calico]# kubectl create -f .
configmap/calico-config created
secret/calico-etcd-secrets created
daemonset.extensions/calico-node created
serviceaccount/calico-node created
deployment.extensions/calico-kube-controllers created
serviceaccount/calico-kube-controllers created
clusterrole.rbac.authorization.k8s.io/calico-kube-controllers created
clusterrolebinding.rbac.authorization.k8s.io/calico-kube-controllers created
clusterrole.rbac.authorization.k8s.io/calico-node created
clusterrolebinding.rbac.authorization.k8s.io/calico-node created

安装 Calicoctl

cd /usr/local/bin/

wget -c  https://github.com/projectcalico/calicoctl/releases/download/v1.6.1/calicoctl

chmod +x calicoctl

[root@master-47-35 nginx]# 
[root@master-47-35 nginx]# cat /etc/calico/calicoctl.cfg 
apiVersion: projectcalico.org/v3
kind: CalicoAPIConfig
metadata:
spec:
  datastoreType: "etcdv3"
  etcdEndpoints: "https://10.39.47.34:2379,https://10.39.47.35:2379,https://10.39.47.36:2379"
  etcdKeyFile: "/etc/kubernetes/ssl/etcd-key.pem"
  etcdCertFile: "/etc/kubernetes/ssl/etcd.pem"
  etcdCACertFile: "/etc/kubernetes/ssl/ca.pem"


[root@master-47-35 nginx]# calicoctl node status
Calico process is running.

IPv4 BGP status
+--------------+-------------------+-------+----------+-------------+
| PEER ADDRESS |     PEER TYPE     | STATE |  SINCE   |    INFO     |
+--------------+-------------------+-------+----------+-------------+
| 10.39.47.36  | node-to-node mesh | up    | 03:58:03 | Established |
| 10.39.47.34  | node-to-node mesh | up    | 03:58:21 | Established |
| 10.39.47.32  | node-to-node mesh | up    | 03:58:45 | Established |
| 10.39.47.12  | node-to-node mesh | up    | 03:58:48 | Established |
| 10.39.47.33  | node-to-node mesh | up    | 06:29:56 | Established |
+--------------+-------------------+-------+----------+-------------+

IPv6 BGP status
No IPv6 peers found.

calico 不是ipip模式 是bgp模式

[root@master-47-35 nginx]# calicoctl get ippool -o yaml 
apiVersion: projectcalico.org/v3
items:
- apiVersion: projectcalico.org/v3
  kind: IPPool
  metadata:
    creationTimestamp: 2018-08-25T03:55:15Z
    name: default-ipv4-ippool
    resourceVersion: "188049"
    uid: acd48c40-a81a-11e8-84d5-5254e98192ae
  spec:
    cidr: 10.253.0.0/16
    ipipMode: Never //Always, CrossSubnet, Never    
    natOutgoing: true
kind: IPPoolList
metadata:
  resourceVersion: "188881"

部署kube-dns
kube-dns.yaml.base

mv kube-dns.yaml.base kube-dns.yaml

1. # clusterIP: __PILLAR__DNS__SERVER__ 修改为我们之前定义的 dns IP 192.254.0.2

2. # 修改 --domain=__PILLAR__DNS__DOMAIN__.   为 我们之前 预定的 domain 名称 --domain=cluster.local.

3. # 修改 --server=/__PILLAR__DNS__DOMAIN__/127.0.0.1#10053  中 domain 为我们之前预定的 --server=/cluster.local./127.0.0.1#10053

4. # 修改 --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.__PILLAR__DNS__DOMAIN__, 中的 domain 为我们之前预定的  --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local.,

5. # 修改 --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.__PILLAR__DNS__DOMAIN__,  中的 domain 为我们之前预定的  --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local.,


[root@master-47-35 kube-dns]# kubectl create -f kube-dns.yaml 
service/kube-dns created
serviceaccount/kube-dns created
configmap/kube-dns created
deployment.extensions/kube-dns created

安装集群完成

[root@master-47-35 kube-dns]# kubectl get pods -n kube-system -o wide 
NAME                                       READY     STATUS    RESTARTS   AGE       IP             NODE
calico-kube-controllers-65945f849d-nqbz9   1/1       Running   0          2h        10.39.47.32    slave-47-32
calico-node-4965k                          2/2       Running   0          2h        10.39.47.35    master-47-35
calico-node-967xp                          2/2       Running   0          2h        10.39.47.36    master-47-36
calico-node-bsp6p                          2/2       Running   0          2h        10.39.47.32    slave-47-32
calico-node-gsdpq                          2/2       Running   0          2h        10.39.47.34    master-47-34
calico-node-r7sh2                          2/2       Running   0          2h        10.39.47.12    slave-47-12
calico-node-x2smd                          2/2       Running   0          2h        10.39.47.33    slave-47-33
kube-apiserver-master-47-34                1/1       Running   0          21h       10.39.47.34    master-47-34
kube-apiserver-master-47-35                1/1       Running   0          23h       10.39.47.35    master-47-35
kube-apiserver-master-47-36                1/1       Running   0          21h       10.39.47.36    master-47-36
kube-controller-manager-master-47-34       1/1       Running   0          21h       10.39.47.34    master-47-34
kube-controller-manager-master-47-35       1/1       Running   0          23h       10.39.47.35    master-47-35
kube-controller-manager-master-47-36       1/1       Running   0          21h       10.39.47.36    master-47-36
kube-dns-58d745cd6d-zng2z                  3/3       Running   0          36s       10.253.109.1   slave-47-33
kube-proxy-5xzbz                           1/1       Running   0          4h        10.39.47.12    slave-47-12
kube-proxy-996nd                           1/1       Running   0          4h        10.39.47.32    slave-47-32
kube-proxy-gxxdn                           1/1       Running   0          4h        10.39.47.33    slave-47-33
kube-proxy-n6p9v                           1/1       Running   0          4h        10.39.47.34    master-47-34
kube-proxy-w72bm                           1/1       Running   0          4h        10.39.47.35    master-47-35
kube-proxy-zs6b2                           1/1       Running   0          4h        10.39.47.36    master-47-36
kube-scheduler-master-47-34                1/1       Running   0          21h       10.39.47.34    master-47-34
kube-scheduler-master-47-35                1/1       Running   0          23h       10.39.47.35    master-47-35
kube-scheduler-master-47-36                1/1       Running   0          21h       10.39.47.36    master-47-36

验证集群

[root@master-47-35 nginx]# kubectl create -f nginx.yaml 
deployment.extensions/nginx-dm created
service/nginx-svc created
[root@master-47-35 nginx]# kubectl get pods 
NAME                       READY     STATUS    RESTARTS   AGE
nginx-dm-fff68d674-dvhhx   1/1       Running   0          9s
nginx-dm-fff68d674-t4xf2   1/1       Running   0          9s
nginx-dm-fff68d674-wl2l4   1/1       Running   0          9s
[root@master-47-35 nginx]# kubectl get pods  -owide 
NAME                       READY     STATUS    RESTARTS   AGE       IP              NODE
nginx-dm-fff68d674-dvhhx   1/1       Running   0          12s       10.253.109.3    slave-47-33
nginx-dm-fff68d674-t4xf2   1/1       Running   0          12s       10.253.20.130   slave-47-32
nginx-dm-fff68d674-wl2l4   1/1       Running   0          12s       10.253.87.130   slave-47-12
[root@master-47-35 nginx]# curl 10.253.109.3
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    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>

安装dashboard 

curl -O https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml

root@master-47-35 nginx]# kubectl create -f kubernetes-dashboard.yaml 
secret/kubernetes-dashboard-certs created
serviceaccount/kubernetes-dashboard created
role.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created
deployment.apps/kubernetes-dashboard created
service/kubernetes-dashboard created
[root@master-47-35 nginx]# kubectl get pods -n kube-system 
NAME                                       READY     STATUS    RESTARTS   AGE
calico-kube-controllers-65945f849d-nqbz9   1/1       Running   0          6h
calico-node-4965k                          2/2       Running   0          6h
calico-node-967xp                          2/2       Running   0          6h
calico-node-bsp6p                          2/2       Running   0          6h
calico-node-gsdpq                          2/2       Running   0          6h
calico-node-r7sh2                          2/2       Running   0          6h
calico-node-x2smd                          2/2       Running   0          6h
kube-apiserver-master-47-34                1/1       Running   0          1d
kube-apiserver-master-47-35                1/1       Running   0          1d
kube-apiserver-master-47-36                1/1       Running   0          1d
kube-controller-manager-master-47-34       1/1       Running   0          1d
kube-controller-manager-master-47-35       1/1       Running   0          1d
kube-controller-manager-master-47-36       1/1       Running   0          1d
kube-dns-58d745cd6d-zng2z                  3/3       Running   0          4h
kube-proxy-5xzbz                           1/1       Running   0          8h
kube-proxy-996nd                           1/1       Running   0          8h
kube-proxy-gxxdn                           1/1       Running   0          8h
kube-proxy-n6p9v                           1/1       Running   0          8h
kube-proxy-w72bm                           1/1       Running   0          8h
kube-proxy-zs6b2                           1/1       Running   0          8h
kube-scheduler-master-47-34                1/1       Running   0          1d
kube-scheduler-master-47-35                1/1       Running   0          1d
kube-scheduler-master-47-36                1/1       Running   0          1d
kubernetes-dashboard-7c85576668-s5c6f      1/1       Running   0          6s
[root@master-47-35 nginx]# kubectl edit svc kubernetes-dashboard -n kube-system
service/kubernetes-dashboard edited
[root@master-47-35 nginx]# kubectl get svc -n kube-system 
NAME                   TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)         AGE
kube-dns               ClusterIP   10.254.0.2      <none>        53/UDP,53/TCP   4h
kubernetes-dashboard   NodePort    10.254.11.180   <none>        443:30968

查看日志
发现查找失败heapster的服务失败

[root@master-47-35 ~]# kubectl logs kubernetes-dashboard-7c85576668-s5c6f -n kube-system 
2018/08/25 10:41:00 Starting overwatch
2018/08/25 10:41:00 Using in-cluster config to connect to apiserver
2018/08/25 10:41:00 Using service account token for csrf signing
2018/08/25 10:41:00 No request provided. Skipping authorization
2018/08/25 10:41:00 Successful initial request to the apiserver, version: v1.11.0-1+feebbe2b16f546
2018/08/25 10:41:00 Generating JWE encryption key
2018/08/25 10:41:00 New synchronizer has been registered: kubernetes-dashboard-key-holder-kube-system. Starting
2018/08/25 10:41:00 Starting secret synchronizer for kubernetes-dashboard-key-holder in namespace kube-system
2018/08/25 10:41:00 Storing encryption key in a secret
2018/08/25 10:41:00 Creating in-cluster Heapster client
2018/08/25 10:41:00 Metric client health check failed: the server could not find the requested resource (get services heapster). Retrying in 30 seconds.
2018/08/25 10:41:00 Auto-generating certificates
2018/08/25 10:41:00 Successfully created certificates
2018/08/25 10:41:00 Serving securely on HTTPS port: 8443
2018/08/25 10:41:30 Metric client health check failed: the server could not find the requested resource (get services heapster). Retrying in 30 seconds.
2018/08/25 10:42:00 Metric client health check failed: the server could not find the requested resource (get services heapster). Retrying in 30 seconds.
2018/08/25 10:42:30 Metric client health check failed: the server could not find the requested resource (get services heapster). Retrying in 30 seconds.
2018/08/25 10:43:00 Metric client health check failed: the server could not find the requested resource (get services heapster). Retrying in 30 seconds.

接下来部署heapster

部署 heapster

下载 heapster 相关 yaml 文件

wget https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/grafana.yaml

wget https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/influxdb.yaml

wget https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/heapster.yaml

wget https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/rbac/heapster-rbac.yaml

yaml 文件列表 以及所需镜像

[root@master-47-35 heapster]# ls -l
total 16
-rw-r--r-- 1 root root 2276 Aug 27 09:53 grafana.yaml
-rw-r--r-- 1 root root  264 Aug 27 09:54 heapster-rbac.yaml
-rw-r--r-- 1 root root 1100 Aug 27 09:54 heapster.yaml
-rw-r--r-- 1 root root  960 Aug 27 09:53 influxdb.yaml
[root@master-47-35 heapster]# cat  grafana.yaml | grep image
        image: k8s.gcr.io/heapster-grafana-amd64:v5.0.4
[root@master-47-35 heapster]# cat  heapster.yaml | grep image
        image: k8s.gcr.io/heapster-amd64:v1.5.4
        imagePullPolicy: IfNotPresent
[root@master-47-35 heapster]# cat influxdb.yaml | grep image
        image: k8s.gcr.io/heapster-influxdb-amd64:v1.5.2

部署heapster

[root@master-47-35 heapster]# kubectl create -f .
deployment.extensions/monitoring-grafana created
service/monitoring-grafana created
clusterrolebinding.rbac.authorization.k8s.io/heapster created
serviceaccount/heapster created
deployment.extensions/heapster created
service/heapster created
deployment.extensions/monitoring-influxdb created
service/monitoring-influxdb created

查看部署heapster结果

[root@master-47-35 heapster]# kubectl get pods -n kube-system 
NAME                                       READY     STATUS    RESTARTS   AGE
calico-kube-controllers-65945f849d-nqbz9   1/1       Running   0          1d
calico-node-4965k                          2/2       Running   0          1d
calico-node-967xp                          2/2       Running   0          1d
calico-node-bsp6p                          2/2       Running   0          1d
calico-node-gsdpq                          2/2       Running   0          1d
calico-node-r7sh2                          2/2       Running   0          1d
calico-node-x2smd                          2/2       Running   0          1d
heapster-c8bf7dccb-qntmt                   1/1       Running   0          29s
kube-apiserver-master-47-34                1/1       Running   0          2d
kube-apiserver-master-47-35                1/1       Running   0          2d
kube-apiserver-master-47-36                1/1       Running   0          2d
kube-controller-manager-master-47-34       1/1       Running   0          2d
kube-controller-manager-master-47-35       1/1       Running   0          2d
kube-controller-manager-master-47-36       1/1       Running   0          2d
kube-dns-58d745cd6d-zng2z                  3/3       Running   0          1d
kube-proxy-5xzbz                           1/1       Running   0          2d
kube-proxy-996nd                           1/1       Running   0          2d
kube-proxy-gxxdn                           1/1       Running   0          2d
kube-proxy-n6p9v                           1/1       Running   0          2d
kube-proxy-w72bm                           1/1       Running   0          2d
kube-proxy-zs6b2                           1/1       Running   0          2d
kube-scheduler-master-47-34                1/1       Running   0          2d
kube-scheduler-master-47-35                1/1       Running   0          2d
kube-scheduler-master-47-36                1/1       Running   0          2d
kubernetes-dashboard-7c85576668-s5c6f      1/1       Running   0          1d
monitoring-grafana-65cc8c4799-bsjxk        1/1       Running   0          30s
monitoring-influxdb-69797ddf88-q2vn7       1/1       Running   0          30s
W0827 02:19:25.000397       1 manager.go:152] Failed to get all responses in time (got 0/6)
E0827 02:20:05.001983       1 manager.go:101] Error in scraping containers from kubelet:10.39.47.34:10255: failed to get all container stats from Kubelet URL "http://10.39.47.34:10255/stats/container/": Post http://10.39.47.34:10255/stats/container/: dial tcp 10.39.47.34:10255: getsockopt: connection refused
E0827 02:20:05.003892       1 manager.go:101] Error in scraping containers from kubelet:10.39.47.36:10255: failed to get all container stats from Kubelet URL "http://10.39.47.36:10255/stats/container/": Post http://10.39.47.36:10255/stats/container/: dial tcp 10.39.47.36:10255: getsockopt: connection refused
E0827 02:20:05.011008       1 manager.go:101] Error in scraping containers from kubelet:10.39.47.32:10255: failed to get all container stats from Kubelet URL "http://10.39.47.32:10255/stats/container/": Post http://10.39.47.32:10255/stats/container/: dial tcp 10.39.47.32:10255: getsockopt: connection refused

修改 yaml 文件

# heapster.yaml 文件

#### 修改如下部分 #####

因为 kubelet 启用了 https 所以如下配置需要增加 https 端口

        - --source=kubernetes:https://kubernetes.default

修改为

        - --source=kubernetes:https://kubernetes.default?kubeletHttps=true&kubeletPort=10250&insecure=true

# heapster-rbac.yaml  文件

#### 修改为部分 #####

将 serviceAccount kube-system:heapster 与 ClusterRole system:kubelet-api-admin 绑定，授予它调用 kubelet API 的权限；


kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: heapster
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:heapster
subjects:
- kind: ServiceAccount
  name: heapster
  namespace: kube-system
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: heapster-kubelet-api
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kubelet-api-admin
subjects:
- kind: ServiceAccount
  name: heapster
  namespace: kube-system

[root@master-47-35 heapster]# kubectl create -f .
deployment.extensions/monitoring-grafana created
service/monitoring-grafana created
clusterrolebinding.rbac.authorization.k8s.io/heapster created
clusterrolebinding.rbac.authorization.k8s.io/heapster-kubelet-api created
serviceaccount/heapster created
deployment.extensions/heapster created
service/heapster created
deployment.extensions/monitoring-influxdb created
service/monitoring-influxdb created
[root@master-47-35 heapster]# kubectl logs -f heapster-7797bb6dd4-jvs6n -n kube-system 
I0827 02:25:20.229353       1 heapster.go:78] /heapster --source=kubernetes:https://kubernetes.default?kubeletHttps=true&kubeletPort=10250&insecure=true --sink=influxdb:http://monitoring-influxdb.kube-system.svc:8086
I0827 02:25:20.229399       1 heapster.go:79] Heapster version v1.5.4
I0827 02:25:20.230543       1 configs.go:61] Using Kubernetes client with master "https://kubernetes.default" and version v1
I0827 02:25:20.230569       1 configs.go:62] Using kubelet port 10250
[root@master-47-35 heapster]# kubectl top nodes 
NAME           CPU(cores)   CPU%      MEMORY(bytes)   MEMORY%   
master-47-34   89m          2%        2257Mi          61%       
master-47-35   124m         3%        2503Mi          67%       
master-47-36   87m          2%        2449Mi          66%       
slave-47-12    38m          1%        1469Mi          39%       
slave-47-32    52m          1%        1434Mi          38%       
slave-47-33    42m          1%        1457Mi          39%

部署完成

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