1、部署apiserver

[root@zoutt-master kubernetes]# cd /opt/kubernetes/ssl
[root@zoutt-master kubernetes]# vim kubernetes-csr.json

 10.61.66.202换为自己的内网ip地址

{
  "CN": "kubernetes",
  "hosts": [
    "127.0.0.1",
    "10.61.66.202",
    "15.20.0.1",
    "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"
    }
  ]
}

生成kubernetes证书和私钥

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

准备软件包

cd /usr/local/src/
wget https://dl.k8s.io/v1.13.0/kubernetes-server-linux-amd64.tar.gz
tar xf kubernetes-server-linux-amd64.tar.gz 
cd kubernetes/server/bin/
cp kube-apiserver kube-scheduler kube-controller-manager /opt/kubernetes/bin/master/bin/
cd /usr/local/src/
wget https://dl.k8s.io/v1.13.0/kubernetes-server-linux-amd64.tar.gz
tar xf kubernetes-server-linux-amd64.tar.gz 
cd kubernetes/server/bin/
cp kubectl /opt/kubernetes/bin/kubectl/bin/

结构如下：

创建kube-apiserver使用的客户端token文件：

export BOOTSTRAP_TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ')
cat > /opt/kubernetes/bin/master/token/token.csv <<EOF
${BOOTSTRAP_TOKEN},kubelet-bootstrap,10001,"system:kubelet-bootstrap"
EOF

 文件目录如下：

创建kube-apiserver配置文件（ 注意将路径以及内网ip替换）：

[root@zoutt-master bin]# cd /opt/kubernetes/bin/master/config/
[root@zoutt-master config]# vi kube-apiserver.cfg

 

kube-apiserver.cfg
#[server]
BIND_ADDRESS="10.61.66.202"
SECURE_PORT="6443"
CLIENT_CA_FILE="/opt/kubernetes/ssl/ca.pem"
SERVICE_ACCOUNT_KEY_FILE="/opt/kubernetes/ssl/ca-key.pem"
TLS_CERT_FILE="/opt/kubernetes/ssl/kubernetes.pem"
TLS_PRIVATE_KEY_FILE="/opt/kubernetes/ssl/kubernetes-key.pem"

#[setting]
LOG_TO_STDERR="false"
LOG_LEVEL="4"
LOG_DIR="/opt/master/log"
ALLOW_PRIVILEGED="true"
SERVICE_CLUSTER_IP_RANGE="15.20.0.0/16"
SERVICE_NODE_PORT_RANGE="30000-40000"
ENABLE_ADMISSION_PLUGINS="DefaultStorageClass,NodeRestriction,NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota"
AUTHORIZATION_MODE="Node,RBAC"
TOKEN_AUTH_FILE="/opt/kubernetes/bin/master/token/token.csv"

#[etcd]
ETCD_SERVERS="https://10.61.66.202:2379"
ETCD_CAFILE="/opt/kubernetes/ssl/ca.pem"
ETCD_CERTFILE="/opt/kubernetes/ssl/etcd.pem"
ETCD_KEYFILE="/opt/kubernetes/ssl/etcd-key.pem"

参数说明：

--logtostderr 启用日志
--v 日志等级
--etcd-servers etcd集群地址
--bind-address 监听地址
--secure-port https安全端口
--advertise-address 集群通告地址
--allow-privileged 启用授权
--service-cluster-ip-range Service虚拟IP地址段
--enable-admission-plugins 准入控制模块
--authorization-mode 认证授权，启用RBAC授权和节点自管理
--enable-bootstrap-token-auth 启用TLS bootstrap功能，后面会讲到
--token-auth-file token文件
--service-node-port-range Service Node类型默认分配端口范围

创建kube-apiserver系统服务：

[root@zoutt-master config]# vi ../service/kube-apiserver.service 
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/opt/kubernetes/bin/master/config/kube-apiserver.cfg
ExecStart=/opt/kubernetes/bin/master/bin/kube-apiserver \
--bind-address=${BIND_ADDRESS} \
--secure-port=${SECURE_PORT} \
--client-ca-file=${CLIENT_CA_FILE} \
--service-account-key-file=${SERVICE_ACCOUNT_KEY_FILE} \
--tls-cert-file=${TLS_CERT_FILE} \
--tls-private-key-file=${TLS_PRIVATE_KEY_FILE} \
--logtostderr=${LOG_TO_STDERR} \
--v=${LOG_LEVEL} \
--log-dir=${LOG_DIR} \
--allow-privileged=${ALLOW_PRIVILEGED} \
--service-cluster-ip-range=${SERVICE_CLUSTER_IP_RANGE} \
--service-node-port-range=${SERVICE_NODE_PORT_RANGE} \
--enable-admission-plugins=${ENABLE_ADMISSION_PLUGINS} \
--authorization-mode=${AUTHORIZATION_MODE} \
--enable-bootstrap-token-auth \
--token-auth-file=${TOKEN_AUTH_FILE} \
--etcd-servers=${ETCD_SERVERS} \
--etcd-cafile=${ETCD_CAFILE} \
--etcd-certfile=${ETCD_CERTFILE} \
--etcd-keyfile=${ETCD_KEYFILE}

Restart=on-failure
RestartSec=5
Type=notify
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

2、部署Controller Manager

创建配置文件

[root@zoutt-master bin]# cd /opt/kubernetes/bin/master/config/
[root@zoutt-master config]# vi kube-controller-manager.cfg
#[apiserver]
MASTER="http://127.0.0.1:8080"

#[setting]
BIND_ADDRESS="127.0.0.1"
ALLOCATE_NODE_CIDRS="true"
CLUSTER_CIDR="192.168.0.0/16"
SERVICE_CLUSTER_IP_RANGE="15.20.0.0/16"

CLUSTER_NAME=kubernetes
CLUSTER_SIGNING_CERT_FILE="/opt/kubernetes/ssl/ca.pem"
CLUSTER_SIGNING_KEY_FILE="/opt/kubernetes/ssl/ca-key.pem"

ROOT_CA_FILE="/opt/kubernetes/ssl/ca.pem"
SERVICE_ACCOUNT_PRIVATE_KEY_FILE="/opt/kubernetes/ssl/ca-key.pem"

LEADER_ELECT="true"

EXPERIMENTAL_CLUSTER_SIGNING_DURATION="87600h"
HORIZONTAL_POD_AUTOSCALER_USE_REST_CLIENTS="false"

创建服务文件

[root@zoutt-master config]# vi ../service/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=kube-apiserver.service
Requires=kube-apiserver.service

[Service]
EnvironmentFile=-/opt/kubernetes/bin/master/config/kube-controller-manager.cfg
ExecStart=/opt/kubernetes/bin/master/bin/kube-controller-manager \
--master=${MASTER} \
--leader-elect=${LEADER_ELECT} \
--bind-address=${BIND_ADDRESS} \
--service-cluster-ip-range=${SERVICE_CLUSTER_IP_RANGE} \
--allocate-node-cidrs=${ALLOCATE_NODE_CIDRS} \
--cluster-cidr=${CLUSTER_CIDR} \
--cluster-name=${CLUSTER_NAME} \
--cluster-signing-cert-file=${CLUSTER_SIGNING_CERT_FILE} \
--cluster-signing-key-file=${CLUSTER_SIGNING_KEY_FILE} \
--root-ca-file=${ROOT_CA_FILE} \
--service-account-private-key-file=${SERVICE_ACCOUNT_PRIVATE_KEY_FILE} \
--experimental-cluster-signing-duration=${EXPERIMENTAL_CLUSTER_SIGNING_DURATION} \
--horizontal-pod-autoscaler-use-rest-clients=${HORIZONTAL_POD_AUTOSCALER_USE_REST_CLIENTS} \
--feature-gates=RotateKubeletServerCertificate=true \
--logtostderr=false \
--v=4

Restart=on-failure
RestartSec=5
Type=simple
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

3、部署scheduller

创建配置文件

[root@zoutt-master bin]# cd /opt/kubernetes/bin/master/config/
[root@zoutt-master config]# vi kube-scheduler.cfg
MASTER="http://127.0.0.1:8080"
LEADER_ELECT="true"

--master 连接本地apiserver
--leader-elect 当该组件启动多个时，自动选举（HA）

创建服务文件

[root@zoutt-master config]# vi ../service/kube-scheduler.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=kube-apiserver.service
Requires=kube-apiserver.service

[Service]
EnvironmentFile=-/opt/kubernetes/bin/master/config/kube-scheduler.cfg
ExecStart=/opt/kubernetes/bin/master/bin/kube-scheduler \
--master=${MASTER} \
--leader-elect=${LEADER_ELECT} \
--logtostderr=false \
--v=4

Restart=on-failure
RestartSec=5
Type=simple
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

创建启动脚本

[root@zoutt-master master]# cd /opt/kubernetes/bin/master/script/
[root@zoutt-master script]# vi init.sh
#!/bin/bash

BOOTSTRAP_TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ')
cat > /opt/kubernetes/bin/master/token/token.csv <<EOF
${BOOTSTRAP_TOKEN},kubelet-bootstrap,10001,"system:bootstrappers"
EOF

chmod +x /opt/kubernetes/bin/master/bin/kube-apiserver
cp /opt/kubernetes/bin/master/service/kube-apiserver.service /usr/lib/systemd/system/kube-apiserver.service

chmod +x /opt/kubernetes/bin/master/bin/kube-controller-manager
cp /opt/kubernetes/bin/master/service/kube-controller-manager.service /usr/lib/systemd/system/kube-controller-manager.service

chmod +x /opt/kubernetes/bin/master/bin/kube-scheduler
cp /opt/kubernetes/bin/master/service/kube-scheduler.service /usr/lib/systemd/system/kube-scheduler.service

systemctl daemon-reload
systemctl restart kube-apiserver
systemctl restart kube-controller-manager
systemctl restart kube-scheduler
[root@zoutt-master script]# chmod 777 init.sh
[root@zoutt-master script]# ./init.sh

验证

[root@zoutt-master bin]# curl -L --cacert /opt/kubernetes/ssl/ca.pem  https://10.61.66.202:6443/api

 

[root@zoutt-master bin]# curl -L http://127.0.0.1:8080/api

 

[root@zoutt-master script]# kubectl get cs

 

 

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