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K8S二进制单节点 一键部署K8S_V1.21.x

Coder_Boy_ 2023-07-09 00:00:03
简介K8S二进制单节点 一键部署K8S_V1.21.x

1、安装前注意事项

安装shell脚本在文章最后位置

1、提前配置静态IP 把脚本的IP 192.168.1.31 换成你的IP

2、创建安装包路径 /home/software/shell 所有的tar包 shell脚本 放在这里

3、免密登录配置所有节点

提前下载镜像如下：

[root@master01 ~]# docker images
REPOSITORY                     TAG                 IMAGE ID            CREATED             SIZE
calico/node                    v3.15.1             1470783b1474        2 years ago         262MB
calico/pod2daemon-flexvol      v3.15.1             a696ebcb2ac7        2 years ago         112MB
calico/cni                     v3.15.1             2858353c1d25        2 years ago         217MB
calico/kube-controllers        v3.15.1             8ed9dbffe350        2 years ago         53.1MB
kubernetesui/dashboard         v2.0.0              8b32422733b3        3 years ago         222MB
kubernetesui/metrics-scraper   v1.0.4              86262685d9ab        3 years ago         36.9MB
lizhenliang/coredns            1.6.7               67da37a9a360        3 years ago         43.8MB
busybox                        1.28.4              8c811b4aec35        4 years ago         1.15MB
lizhenliang/pause-amd64        3.0                 99e59f495ffa        6 years ago         747kB

软件安装包需下载如下：

1）下载etcd二进制文件

地址：https://github.com/etcd-io/etcd/releases/download/v3.4.9/etcd-v3.4.9-linux-amd64.tar.gz

2） 下载 Docker二进制文件
这里使用Docker作为容器引擎，也可以换成别的，例如containerd

 下载地址：https://download.docker.com/linux/static/stable/x86_64/docker-19.03.9.tgz

3) 下载 kuberneteser二进制文件
下载地址：https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md
注：打开链接你会发现里面有很多包，下载一个server包就够了，包含了Master和Worker Node二进制文件

执行前提醒

注意：install_k8s_base.sh中的文件hosts字段中IP为所有Master/LB/VIP IP，一个都不能少！为了方便后期扩容可以多写几个预留的IP

这么有几个IP 就可以后期增加几个node节点！！ 我这里可以有4个节点。

ETCD 默认安装单节点，可以修改配置增加节点，需要每个节点都按照 不然无法启动ETCD集群！！

2、开启安装步骤:

最可能出现的异常问题都是证书和网络相关的，这也是K8S最核心最难的部分，参考官方文档、执行日志、组件的版本兼容性、配置参数、系统参数等分析

依次执行如下脚本：

sh pre_env.sh

sh install_docker.sh

sh install_etcd.sh

sh install_k8s_base.sh

sh install_net_plugin.sh

sh install_coredns_board.sh

/home/software/shell/board_token 文件里是dashboad的token信息 获取后访问即可

如果需要卸载网络插件 执行

sh clear_net_plugin.sh

静态IP 也可以修改static_ip_config.sh 里面的IP信息 后执行

sh static_ip_config.sh

3、 最终效果

Node节点情况

在这里插入图片描述

Pod情况

内存使用情况：

我是16GRAM 最终部署K8S初始状态后,内存占如下：

我是增加了一个node节点后的

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4、常见问题

问题1：没有给apiserver授权访问kubelet组件

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确认：ClusterRole 有没有 增加  - pods/log 的查询权限

cat > apiserver-to-kubelet-rbac.yaml << EOF
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:kube-apiserver-to-kubelet
rules:
  - apiGroups:
      - ""
    resources:
      - nodes/proxy
      - nodes/stats
      - nodes/log
      - nodes/spec
      - nodes/metrics
      - pods/log
    verbs:
      - "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: system:kube-apiserver
  namespace: ""
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kube-apiserver-to-kubelet
subjects:
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: kubernetes
EOF

kubectl apply -f apiserver-to-kubelet-rbac.yaml

5、Shell 部署脚本

pre_env.sh

#/bin/bash
# 1、关闭防火墙 
systemctl stop firewalld 
systemctl disable firewalld 
echo "关闭防火墙！"

# 2、关闭selinux 
setenforce 0  # 临时 
sed -i 's/enforcing/disabled/' /etc/selinux/config  # 永久 

echo "关闭selinux ！"

# 3、关闭swap 
swapoff -a  # 临时 
sed -ri 's/.*swap.*/#&/' /etc/fstab    # 永久 
echo "关闭swap  ！"
 
# 4、根据规划设置主机名 
hostnamectl set-hostname master01 
 
# 5、在master添加hosts 
cat >> /etc/hosts << EOF 
192.168.1.31 master01
192.168.1.32 master02
192.168.1.33 node01 
192.168.1.34 node02 
EOF

echo "在master添加hosts   ！"

# 6、将桥接的IPv4流量传递到iptables的链 
cat > /etc/sysctl.d/k8s.conf << EOF 
net.bridge.bridge-nf-call-ip6tables = 1 
net.bridge.bridge-nf-call-iptables = 1 
EOF
sysctl --system  # 生效 
 
# 7、时间同步 
yum install ntpdate -y 
ntpdate time.windows.com

install_docker.sh

#/bin/bash
# 1.解压二进制软件包
tar zxvf docker-19.03.9.tgz
mv docker/* /usr/bin

echo "解压success ！"

# 2.systemd管理docker
cat > /usr/lib/systemd/system/docker.service << EOF
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target
EOF

# 3.创建配置文件
mkdir /etc/docker
cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"]
}
EOF

# 4.启动并设置开机启动
systemctl daemon-reload
systemctl start docker
systemctl enable docker

docker version

install_etcd.sh

#/bin/bash
##下载证书cfssl
#mkdir cfssl && cd cfssl/
cd /home/software/shell
chmod +x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64
mv -f cfssl_linux-amd64 /usr/local/bin/cfssl
mv -f cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv -f cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo

#生成Etcd证书
#1 自签证书颁发机构（CA）
# 1、创建工作目录
mkdir -p ~/TLS/{etcd,k8s} && cd ~/TLS/etcd

# 2、自签CA
cat > ca-config.json << EOF
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "www": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF

cat > ca-csr.json << EOF
{
    "CN": "etcd CA",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Beijing",
            "ST": "Beijing"
        }
    ]
}
EOF

# 3、生成证书：会生成ca.pem和ca-key.pem文件
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
## 使用自签CA签发Etcd Https证书
# 创建证书请求文件
cat > server-csr.json << EOF
{
    "CN": "etcd",
    "hosts": [
    "192.168.1.31"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "BeiJing",
            "ST": "BeiJing"
        }
    ]
}
EOF

## 生成证书，会生成server.pem和server-key.pem文件
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server



#1 创建工作目录并解压二进制包
cd /home/software/shell
mkdir /opt/etcd/{bin,cfg,ssl} -p
tar zxvf etcd-v3.4.9-linux-amd64.tar.gz
mv etcd-v3.4.9-linux-amd64/{etcd,etcdctl} /opt/etcd/bin/

#2 创建etcd配置文件
cat > /opt/etcd/cfg/etcd.conf << EOF
#[Member]
ETCD_NAME="etcd-1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.1.31:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.1.31:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.1.31:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.1.31:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.1.31:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF

#3 systemd管理etcd
cat > /usr/lib/systemd/system/etcd.service << EOF
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
EnvironmentFile=/opt/etcd/cfg/etcd.conf
ExecStart=/opt/etcd/bin/etcd 
--cert-file=/opt/etcd/ssl/server.pem 
--key-file=/opt/etcd/ssl/server-key.pem 
--peer-cert-file=/opt/etcd/ssl/server.pem 
--peer-key-file=/opt/etcd/ssl/server-key.pem 
--trusted-ca-file=/opt/etcd/ssl/ca.pem 
--peer-trusted-ca-file=/opt/etcd/ssl/ca.pem 
--logger=zap
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

#4 拷贝生成的证书至指定位置
# 把刚才生成的证书拷贝到配置文件中的路径
cp ~/TLS/etcd/ca*pem ~/TLS/etcd/server*pem /opt/etcd/ssl/


#5 启动并设置开机启动
systemctl daemon-reload
systemctl start etcd
systemctl enable etcd
systemctl status etcd

#6 查看集群状态

ETCDCTL_API=3 /opt/etcd/bin/etcdctl --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --endpoints="https://192.168.1.31:2379" endpoint health --write-out=table

install_k8s_base.sh

#/bin/bash

#1 自签证书签发机构（CA）
cd ~/TLS/k8s

cat > ca-config.json << EOF
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "kubernetes": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF

cat > ca-csr.json << EOF
{
    "CN": "kubernetes",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Beijing",
            "ST": "Beijing",
            "O": "k8s",
            "OU": "System"
        }
    ]
}
EOF

# 生成证书：生成ca.pem和ca-key.pem文件
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -

#2 使用自签CA签发kube-apiserver HTTPS证书
# 创建证书请求文件
cat > server-csr.json << EOF
{
    "CN": "kubernetes",
    "hosts": [
      "10.0.0.1",
      "127.0.0.1",
      "192.168.1.31",
      "192.168.1.32",
      "192.168.1.33",
      "192.168.1.34",
      "kubernetes",
      "kubernetes.default",
      "kubernetes.default.svc",
      "kubernetes.default.svc.cluster",
      "kubernetes.default.svc.cluster.local"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "BeiJing",
            "ST": "BeiJing",
            "O": "k8s",
            "OU": "System"
        }
    ]
}
EOF

#3 # 生成证书，生成server.pem和server-key.pem
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server

##部署kube-apiserver
#1 下载并解压二进制软件包
mkdir -p /opt/kubernetes/{bin,cfg,ssl,logs} 
tar zxvf kubernetes-server-linux-amd64.tar.gz
cd kubernetes/server/bin
cp kube-apiserver kube-scheduler kube-controller-manager /opt/kubernetes/bin
cp kubectl /usr/bin/


#2 创建配置文件

cat > /opt/kubernetes/cfg/kube-apiserver.conf << EOF
KUBE_APISERVER_OPTS="--logtostderr=false \
--v=2 \
--log-dir=/opt/kubernetes/logs \
--etcd-servers=https://192.168.1.31:2379 \
--bind-address=192.168.1.31 \
--secure-port=6443 \
--advertise-address=192.168.1.31 \
--allow-privileged=true \
--service-cluster-ip-range=10.0.0.0/24 \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \
--enable-bootstrap-token-auth=true \
--token-auth-file=/opt/kubernetes/cfg/token.csv \
--service-node-port-range=30000-32767 \
--kubelet-client-certificate=/opt/kubernetes/ssl/server.pem \
--kubelet-client-key=/opt/kubernetes/ssl/server-key.pem \
--tls-cert-file=/opt/kubernetes/ssl/server.pem  \
--tls-private-key-file=/opt/kubernetes/ssl/server-key.pem \
--client-ca-file=/opt/kubernetes/ssl/ca.pem \
--service-account-key-file=/opt/kubernetes/ssl/ca-key.pem \
--service-account-issuer=api \
--service-account-signing-key-file=/opt/kubernetes/ssl/server-key.pem \
--etcd-cafile=/opt/etcd/ssl/ca.pem \
--etcd-certfile=/opt/etcd/ssl/server.pem \
--etcd-keyfile=/opt/etcd/ssl/server-key.pem \
--requestheader-client-ca-file=/opt/kubernetes/ssl/ca.pem \
--proxy-client-cert-file=/opt/kubernetes/ssl/server.pem \
--proxy-client-key-file=/opt/kubernetes/ssl/server-key.pem \
--requestheader-allowed-names=kubernetes \
--requestheader-extra-headers-prefix=X-Remote-Extra- \
--requestheader-group-headers=X-Remote-Group \
--requestheader-username-headers=X-Remote-User \
--enable-aggregator-routing=true \
--audit-log-maxage=30 \
--audit-log-maxbackup=3 \
--audit-log-maxsize=100 \
--audit-log-path=/opt/kubernetes/logs/k8s-audit.log"
EOF

#3 拷贝生成的证书
# 把刚才生成的证书拷贝到配置文件中的路径
cp ~/TLS/k8s/ca*pem ~/TLS/k8s/server*pem /opt/kubernetes/ssl/

#4 创建token文件
# 格式：token，用户名，UID，用户组
cat > /opt/kubernetes/cfg/token.csv << EOF
`head -c 16 /dev/urandom | od -An -t x | tr -d ' '`,kubelet-bootstrap,10001,"system:node-bootstrapper"
EOF


#5 systemd管理apiserver
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=/opt/kubernetes/cfg/kube-apiserver.conf
ExecStart=/opt/kubernetes/bin/kube-apiserver $KUBE_APISERVER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF


#6 启动并设置开机启动
systemctl daemon-reload
systemctl start kube-apiserver 
systemctl enable kube-apiserver
systemctl status kube-apiserver 

##部署kube-controller-manager

#1 创建配置文件
cat > /opt/kubernetes/cfg/kube-controller-manager.conf << EOF
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=false \
--v=2 \
--log-dir=/opt/kubernetes/logs \
--leader-elect=true \
--kubeconfig=/opt/kubernetes/cfg/kube-controller-manager.kubeconfig \
--bind-address=127.0.0.1 \
--allocate-node-cidrs=true \
--cluster-cidr=10.244.0.0/16 \
--service-cluster-ip-range=10.0.0.0/24 \
--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 \
--cluster-signing-duration=87600h0m0s"
EOF

#2 生成kubeconfig文件
# 切换工作目录
cd ~/TLS/k8s

# 创建证书请求文件
cat > kube-controller-manager-csr.json << EOF
{
  "CN": "system:kube-controller-manager",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "BeiJing", 
      "ST": "BeiJing",
      "O": "system:masters",
      "OU": "System"
    }
  ]
}
EOF

# 生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager

# 生成kubeconfig文件

KUBE_CONFIG="/opt/kubernetes/cfg/kube-controller-manager.kubeconfig"
KUBE_APISERVER="https://192.168.1.31:6443"

kubectl config set-cluster kubernetes 
  --certificate-authority=/opt/kubernetes/ssl/ca.pem 
  --embed-certs=true 
  --server=${KUBE_APISERVER} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-controller-manager 
  --client-certificate=./kube-controller-manager.pem 
  --client-key=./kube-controller-manager-key.pem 
  --embed-certs=true 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-context default 
  --cluster=kubernetes 
  --user=kube-controller-manager 
  --kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}

#3 systemd管理controller-manager
cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=/opt/kubernetes/cfg/kube-controller-manager.conf
ExecStart=/opt/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF


#4 启动并设置开机启动
systemctl daemon-reload
systemctl start kube-controller-manager
systemctl enable kube-controller-manager
systemctl status kube-controller-manager

##部署kube-scheduler

#1 创建配置文件
cat > /opt/kubernetes/cfg/kube-scheduler.conf << EOF
KUBE_SCHEDULER_OPTS="--logtostderr=false \
--v=2 \
--log-dir=/opt/kubernetes/logs \
--leader-elect \
--kubeconfig=/opt/kubernetes/cfg/kube-scheduler.kubeconfig \
--bind-address=127.0.0.1"
EOF

#2 生成kubeconfig文件
# 切换工作目录
cd ~/TLS/k8s

# 创建证书请求文件
cat > kube-scheduler-csr.json << EOF
{
  "CN": "system:kube-scheduler",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "BeiJing",
      "ST": "BeiJing",
      "O": "system:masters",
      "OU": "System"
    }
  ]
}
EOF

# 生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler

#3 生成kubeconfig文件
KUBE_CONFIG="/opt/kubernetes/cfg/kube-scheduler.kubeconfig"
KUBE_APISERVER="https://192.168.1.31:6443"

kubectl config set-cluster kubernetes 
  --certificate-authority=/opt/kubernetes/ssl/ca.pem 
  --embed-certs=true 
  --server=${KUBE_APISERVER} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-scheduler 
  --client-certificate=./kube-scheduler.pem 
  --client-key=./kube-scheduler-key.pem 
  --embed-certs=true 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-context default 
  --cluster=kubernetes 
  --user=kube-scheduler 
  --kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}

#4 systemd管理scheduler
cat > /usr/lib/systemd/system/kube-scheduler.service << EOF
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=/opt/kubernetes/cfg/kube-scheduler.conf
ExecStart=/opt/kubernetes/bin/kube-scheduler $KUBE_SCHEDULER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

#5 启动并设置开机启动
systemctl daemon-reload
systemctl start kube-scheduler
systemctl enable kube-scheduler
systemctl status kube-scheduler


##查看集群状态
#1 生成kubectl连接集群的证书：
cat > admin-csr.json <<EOF
{
  "CN": "admin",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "BeiJing",
      "ST": "BeiJing",
      "O": "system:masters",
      "OU": "System"
    }
  ]
}
EOF

cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin

#2 生成kubeconfig文件：

mkdir /root/.kube

KUBE_CONFIG="/root/.kube/config"
KUBE_APISERVER="https://192.168.1.31:6443"

kubectl config set-cluster kubernetes 
  --certificate-authority=/opt/kubernetes/ssl/ca.pem 
  --embed-certs=true 
  --server=${KUBE_APISERVER} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials cluster-admin 
  --client-certificate=./admin.pem 
  --client-key=./admin-key.pem 
  --embed-certs=true 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-context default 
  --cluster=kubernetes 
  --user=cluster-admin 
  --kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}

#3 通过kubectl工具查看当前集群组件状态
kubectl get cs
echo "===========kubectl get cs==SUCCESS===================================>"
##授权kubelet-bootstrap用户允许请求证书
kubectl create clusterrolebinding kubelet-bootstrap 
--clusterrole=system:node-bootstrapper 
--user=kubelet-bootstrap


##部署Worker Node
#1 创建工作目录并拷贝二进制文件
# 在所有worker node创建工作目录（master已创建，新加入节点需要创建）
mkdir -p /opt/kubernetes/{bin,cfg,ssl,logs}

# 从解压的k8s server压缩包中拷贝文件
cd /home/software/shell/kubernetes/server/bin
cp kubelet kube-proxy /opt/kubernetes/bin

##2 部署kubelet
#1 创建配置文件
cat > /opt/kubernetes/cfg/kubelet.conf << EOF
KUBELET_OPTS="--logtostderr=false \
--v=2 \
--log-dir=/opt/kubernetes/logs \
--hostname-override=master01 \
--network-plugin=cni \
--kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \
--config=/opt/kubernetes/cfg/kubelet-config.yml \
--cert-dir=/opt/kubernetes/ssl \
--pod-infra-container-image=lizhenliang/pause-amd64:3.0"
EOF

#2 配置参数文件
cat > /opt/kubernetes/cfg/kubelet-config.yml << EOF
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS:
- 10.0.0.2
clusterDomain: cluster.local 
failSwapOn: false
authentication:
  anonymous:
    enabled: false
  webhook:
    cacheTTL: 2m0s
    enabled: true
  x509:
    clientCAFile: /opt/kubernetes/ssl/ca.pem 
authorization:
  mode: Webhook
  webhook:
    cacheAuthorizedTTL: 5m0s
    cacheUnauthorizedTTL: 30s
evictionHard:
  imagefs.available: 15%
  memory.available: 100Mi
  nodefs.available: 10%
  nodefs.inodesFree: 5%
maxOpenFiles: 1000000
maxPods: 110
EOF

echo "===========ALL==SUCCESS===================================>"
chmod -R 777 /opt/kubernetes/cfg/token.csv
STR=`cat /opt/kubernetes/cfg/token.csv`
TOKEN_STR=`echo ${STR%%,*}`
TOKEN=$TOKEN_STR

#3 生成kubelet初次加入集群引导kubeconfig文件 # 与token.csv里保持一致
KUBE_CONFIG="/opt/kubernetes/cfg/bootstrap.kubeconfig"
KUBE_APISERVER="https://192.168.1.31:6443"
TOKEN="c47ffb939f5ca36231d9e3121a252940" 

# 生成 kubelet bootstrap kubeconfig 配置文件
kubectl config set-cluster kubernetes 
  --certificate-authority=/opt/kubernetes/ssl/ca.pem 
  --embed-certs=true 
  --server=${KUBE_APISERVER} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials "kubelet-bootstrap" 
  --token=${TOKEN} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-context default 
  --cluster=kubernetes 
  --user="kubelet-bootstrap" 
  --kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}

#4 systemd管理kubelet
cat > /usr/lib/systemd/system/kubelet.service << EOF
[Unit]
Description=Kubernetes Kubelet
After=docker.service

[Service]
EnvironmentFile=/opt/kubernetes/cfg/kubelet.conf
ExecStart=/opt/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

#5 启动并设置开机启动

systemctl daemon-reload
systemctl start kubelet
systemctl enable kubelet
systemctl status kubelet


#6 批准kubelet证书申请并加入集群
# 查看kubelet证书请求
kubectl get csr


### 批准申请
echo `kubectl get csr|grep Pending| awk '{print $1}'`> log
APPLY_NODE=`cat log`
kubectl certificate approve $APPLY_NODE


# 查看节点（由于网络插件还没有部署，节点会没有准备就绪 NotReady）
kubectl get node

##部署kube-proxy
#1 创建配置文件
cat > /opt/kubernetes/cfg/kube-proxy.conf << EOF
KUBE_PROXY_OPTS="--logtostderr=false \
--v=2 \
--log-dir=/opt/kubernetes/logs \
--config=/opt/kubernetes/cfg/kube-proxy-config.yml"
EOF

#2 配置参数文件
cat > /opt/kubernetes/cfg/kube-proxy-config.yml << EOF
kind: KubeProxyConfiguration
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
metricsBindAddress: 0.0.0.0:10249
clientConnection:
  kubeconfig: /opt/kubernetes/cfg/kube-proxy.kubeconfig
hostnameOverride: master01
clusterCIDR: 10.0.0.0/24
EOF

#3 生成kube-proxy.kubeconfig文件
# 生成kube-proxy证书：
# 切换工作目录
cd ~/TLS/k8s

# 创建证书请求文件
cat > kube-proxy-csr.json << EOF
{
  "CN": "system:kube-proxy",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "BeiJing",
      "ST": "BeiJing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
EOF

# 生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

# 生成kubeconfig文件
KUBE_CONFIG="/opt/kubernetes/cfg/kube-proxy.kubeconfig"
KUBE_APISERVER="https://192.168.1.31:6443"

kubectl config set-cluster kubernetes 
  --certificate-authority=/opt/kubernetes/ssl/ca.pem 
  --embed-certs=true 
  --server=${KUBE_APISERVER} 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-proxy 
  --client-certificate=./kube-proxy.pem 
  --client-key=./kube-proxy-key.pem 
  --embed-certs=true 
  --kubeconfig=${KUBE_CONFIG}
kubectl config set-context default 
  --cluster=kubernetes 
  --user=kube-proxy 
  --kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}


#4 systemd管理kube-proxy
cat > /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Proxy
After=network.target

[Service]
EnvironmentFile=/opt/kubernetes/cfg/kube-proxy.conf
ExecStart=/opt/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

# 启动并设置开机启动
systemctl daemon-reload
systemctl start kube-proxy
systemctl enable kube-proxy

systemctl status kube-proxy

install_net_plugin.sh

#/bin/bash

# 部署Calico
kubectl apply -f calico.yaml
kubectl get pods -n kube-system

# 等Calico Pod都Running，节点也会准备就绪
kubectl get node


# 授权apiserver访问kubelet
# 应用场景：例如kubectl logs

cat > apiserver-to-kubelet-rbac.yaml << EOF
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:kube-apiserver-to-kubelet
rules:
  - apiGroups:
      - ""
    resources:
      - nodes/proxy
      - nodes/stats
      - nodes/log
      - nodes/spec
      - nodes/metrics
      - pods/log
    verbs:
      - "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: system:kube-apiserver
  namespace: ""
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kube-apiserver-to-kubelet
subjects:
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: kubernetes
EOF

kubectl apply -f apiserver-to-kubelet-rbac.yaml

install_coredns_board.sh

#/bin/bash
# 部署
kubectl apply -f kubernetes-dashboard.yaml

# 查看部署
kubectl get pods,svc -n kubernetes-dashboard

# 创建service account并绑定默认cluster-admin管理员集群角色：
kubectl create serviceaccount dashboard-admin -n kube-system
kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin
kubectl describe secrets -n kube-system $(kubectl -n kube-system get secret | awk '/dashboard-admin/{print $1}') > board_token

# 部署CoreDNS
#CoreDNS用于集群内部Service名称解析：
kubectl apply -f coredns.yaml 

kubectl get pods -n kube-system  

#DNS解析测试：
#kubectl run -it --rm dns-test --image=busybox:1.28.4 sh
#
#If you don't see a command prompt, try pressing enter.
#/ # nslookup kubernetes
#Server:    10.0.0.2
#Address 1: 10.0.0.2 kube-dns.kube-system.svc.cluster.local
#
#Name:      kubernetes
#Address 1: 10.0.0.1 kubernetes.default.svc.cluster.local

static_ip_config.sh

#/bin/bash
cat >> /etc/sysconfig/network-scripts/ifcfg-enp0s3 << EOF 
IPADDR=192.168.1.32
NETMASK=255.255.255.0 
GATEWAY=192.168.1.1
DNS1=8.8.8.8
EOF

sed -i 's/dhcp/static/' /etc/sysconfig/network-scripts/ifcfg-enp0s3

systemctl restart network

clear_net_plugin.sh

#/bin/bash
#1.kubectl delete -f calico.yaml
#2.查看带tunl0的网卡
ip addr show
#3. 查看带tunl0的网卡
modprobe -v -r ipip
#4.删除/etc/cni/net.d/下的所有文件
rm -rf /etc/cni/net.d/*

ssh_auto.sh


#!/bin/bash
#!/bin/bash
#------------------------------------------#
# FileName:             ssh_auto.sh
# Revision:             1.1.0
# Date:                 2017-07-14 04:50:33
# Author:               vinsent
# Email:                hyb_admin@163.com
# Website:              www.vinsent.cn
# Description:          This script can achieve ssh password-free login, 
#                       and can be deployed in batches, configuration
#------------------------------------------#
# Copyright:            2017 vinsent
# License:              GPL 2+
#------------------------------------------#
yum -y install expect


[ ! -f /root/.ssh/id_rsa.pub ] && ssh-keygen -t rsa -p '' &>/dev/null  # 密钥对不存在则创建密钥
while read line;do
        ip=`echo $line | cut -d " " -f1`             # 提取文件中的ip
        user_name=`echo $line | cut -d " " -f2`      # 提取文件中的用户名
        pass_word=`echo $line | cut -d " " -f3`      # 提取文件中的密码
expect <<EOF
        spawn ssh-copy-id -i /root/.ssh/id_rsa.pub $user_name@$ip   # 复制公钥到目标主机
        expect {
                "yes/no" { send "yes
";exp_continue}     # expect 实现自动输入密码
                "password" { send "$pass_word
"}
        }
        expect eof
EOF
  
done < /root/host_ip.txt      # 读取存储ip的文件
  
pscp.pssh -h /root/host_ip.txt /root/your_scripts.sh /root     # 推送你在目标主机进行的部署配置
pssh -h /root/host_ip.txt -i bash /root/your_scripts.sh        # 进行远程配置，执行你的配置脚本
主机列表 文件 host_ip.txt

192.168.1.31 root 1234567
192.168.1.33 root 123456

风语者！平时喜欢研究各种技术，目前在从事后端开发工作，热爱生活、热爱工作。

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