二进制方式部署k8s集群(超详细) _K8S集群

冲天香阵透长安，满城尽带黄金甲。这篇文章主要讲述二进制方式部署k8s集群(超详细)相关的知识，希望能为你提供帮助。

环境准备

主机名	IP	操作系统	硬件配置
k8s-master	192.168.0.150	CentOS7.3 3.10	cpu:2核内存:4G 硬盘:30G
k8s-node01	192.168.0.151	CentOS7.3 3.10	cpu:2核内存:4G 硬盘:30G
k8s-node02	192.168.0.152	CentOS7.3 3.10	cpu:2核内存:4G 硬盘:30G

操作系统环境准备(k8s-master,k8s-node01,k8s-node02)

禁用Selinux

sed -i s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config

禁用SWAP分区

注释掉/etc/fstab中关于swap的内容

确保三台服务器时间一致

yum -y install ntpdate & & ntpdate cn.ntp.org.cn

修改内核参数

cat > /etc/sysctl.d/k8s.conf < < EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

加载ipvs模块

modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
lsmod | grep ip_vs
lsmod | grep nf_conntrack_ipv4
yum install -y ipvsadm

确保三台服务器可以上外网
修改/etc/hosts

cat > > /etc/hosts <
192.168.0.150 k8s-master

192.168.0.151 k8s-node01

192.168.0.152 k8s-node02

EOF

?更新系统systemd工具包

?yum -y update systemd

关闭并且禁用防火墙
?安装Docker

#移除旧版本docker

yum remove docker \\

docker-client \\

docker-client-latest \\

docker-common \\

docker-latest \\

docker-latest-logrotate \\

docker-logrotate \\

docker-engine

#安装docker repo源

yum install -y yum-utils

yum-config-manager \\

--add-repo \\

"> https://download.docker.com/linux/centos/docker-ce.repo

#安装docker

yum install -y docker-ce

#启动docker并设置开机启动

systemctl start docker & & systemctl enable docker

#测试docker

docker info

#配置镜像加速器

cat> /etc/docker/daemon.json < < EOF

"registry-mirrors": ["https://m81hcukn.mirror.aliyuncs.com"]

EOF

#更改Docker的Cgroup为systemd

cat /etc/docker/daemon.json

"exec-opts": ["native.cgroupdriver=systemd"]

#重启docker

systemctl restart docker

?配置ssh进行免密登录(k8s-master)

[root@k8s-master ~]# ssh-keygen -t rsa

[root@k8s-master ~]# ssh-copy-id root@192.168.1.107

[root@k8s-master ~]# ssh-copy-id root@192.168.1.108

?重启三台服务器

reboot

#每台机器都需要配置证书文件、组件的配置文件、组件的服务启动文件，现专门选择 k8s-master 来统一生成这些文件，然后再分发到其他机器
?mkdir -p /data/work

?部署etcd集群

mkdir -p /etc/etcd #配置文件存放目录

mkdir -p /etc/etcd/ssl #证书文件存放目录

?创建etcd证书

#上传证书制作工具

[root@k8s-master work]# ls /data/work/

cfssl cfssl-certinfo cfssljson

#工具配置

[root@k8s-master work]# chmod +x cfssl*

[root@k8s-master work]# mv * /usr/local/bin/

#配置ca请求文件

[root@k8s-master work]# vim ca-csr.json

"CN": "kubernetes",

"key":

"algo": "rsa",

"size": 2048

,

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "k8s",

"OU": "system"

],

"ca":

"expiry": "87600h"

#创建ca证书

[root@k8s-master work]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca

#配置ca证书策略

[root@k8s-master work]# vim ca-config.json

"signing":

"default":

"expiry": "87600h"

,

"profiles":

"kubernetes":

"usages": [

"signing",

"key encipherment",

"server auth",

"client auth"

],

"expiry": "87600h"

#配置etcd请求csr文件

[root@k8s-master work]# vim etcd-csr.json

"CN": "etcd",

"hosts": [

"127.0.0.1",

"192.168.1.104",

"192.168.1.107",

"192.168.1.108"

],

"key":

"algo": "rsa",

"size": 2048

,

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "k8s",

"OU": "system"

]

#生成证书

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

?下载etcd软件包

#下载

[root@master1 work]# wget https://github.com/etcd-io/etcd/releases/download/v3.4.13/etcd-v3.4.13-linux-amd64.tar.gz

#解压

[root@master1 work]# tar -xf etcd-v3.4.13-linux-amd64.tar.gz
#拷贝二进制文件

[root@master1 work]# cp -p etcd-v3.4.13-linux-amd64/etcd* /usr/local/bin/

#拷贝二进制到node01和node02

[root@master1 work]# scp etcd-v3.4.13-linux-amd64/etcd* 192.168.1.107:/usr/local/bin/

[root@master1 work]# scp etcd-v3.4.13-linux-amd64/etcd* 192.168.1.108:/usr/local/bin/

?创建配置文件

[root@k8s-master work]# vim etcd.conf

#[Member]

ETCD_NAME="etcd1"

ETCD_DATA_DIR="/var/lib/etcd/default.etcd"

ETCD_LISTEN_PEER_URLS="https://192.168.1.104:2380"

ETCD_LISTEN_CLIENT_URLS="https://192.168.1.104:2379,http://127.0.0.1:2379"

#[Clustering]

ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.1.104:2380"

ETCD_ADVERTISE_CLIENT_URLS="https://192.168.1.104:2379"

ETCD_INITIAL_CLUSTER="etcd1=https://192.168.1.104:2380,etcd2=https://192.168.1.107:2380,etcd3=https://192.168.1.108:2380"

ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE="new"

注释:

ETCD_NAME：节点名称，集群中唯一

ETCD_DATA_DIR：数据目录

ETCD_LISTEN_PEER_URLS：集群通信监听地址

ETCD_LISTEN_CLIENT_URLS：客户端访问监听地址

ETCD_INITIAL_ADVERTISE_PEER_URLS：集群通告地址

ETCD_ADVERTISE_CLIENT_URLS：客户端通告地址

ETCD_INITIAL_CLUSTER：集群节点地址

ETCD_INITIAL_CLUSTER_TOKEN：集群Token

ETCD_INITIAL_CLUSTER_STATE：加入集群的当前状态，new是新集群，existing表示加入已有集群

?创建启动服务文件

[root@k8s-master work]# vim etcd.service

[Unit]

Description=Etcd Server

After=network.target

After=network-online.target

Wants=network-online.target

[Service]

Type=notify

EnvironmentFile=-/etc/etcd/etcd.conf

WorkingDirectory=/var/lib/etcd/

ExecStart=/usr/local/bin/etcd \\

--cert-file=/etc/etcd/ssl/etcd.pem \\

--key-file=/etc/etcd/ssl/etcd-key.pem \\

--trusted-ca-file=/etc/etcd/ssl/ca.pem \\

--peer-cert-file=/etc/etcd/ssl/etcd.pem \\

--peer-key-file=/etc/etcd/ssl/etcd-key.pem \\

--peer-trusted-ca-file=/etc/etcd/ssl/ca.pem \\

--peer-client-cert-auth \\

--client-cert-auth

Restart=on-failure

RestartSec=5

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target

?同步相关文件到各个节点

[root@k8s-master work]# cp ca*.pem /etc/etcd/ssl/

[root@k8s-master work]# cp etcd*.pem /etc/etcd/ssl/

[root@k8s-master work]# cp etcd.conf /etc/etcd/

[root@k8s-master work]# cp etcd.service /usr/lib/systemd/system/

[root@k8s-master work]# for i in k8s-node01 k8s-node02; do scp -r /etc/etcd/ $i:/etc/; done

[root@k8s-master work]# for i in k8s-node01 k8s-node02; do scp etcd.service $i:/usr/lib/systemd/system/; done

?mkdir -p /var/lib/etcd/default.etcd

?node01和node02分别修改配置文件(etcd.conf)中etcd名字和ip，并创建目录 /var/lib/etcd/default.etcd
?启动etcd集群

k8s-master,k8s-node01,k8s-node02三个节点执行相同命令

systemctl daemon-reload

systemctl enable etcd.service

systemctl start etcd.service

systemctl status etcd

?查看集群状态

?[root@k8s-master work]# ETCDCTL_API=3 /usr/local/bin/etcdctl --write-out=table --cacert=/etc/etcd/ssl/ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --endpoints=https://192.168.1.104:2379,https://192.168.1.107:2379,https://192.168.1.108:2379 endpoint health

?kubernetes组件部署

?下载安装包

[root@k8s-master work]# wget https://dl.k8s.io/v1.20.1/kubernetes-server-linux-amd64.tar.gz

[root@k8s-master work]# tar -xf kubernetes-server-linux-amd64.tar.gz
[root@k8s-master work]# cd kubernetes/server/bin/

[root@k8s-master bin]# cp kube-apiserver kube-controller-manager kube-scheduler kubectl /usr/local/bin/

[root@k8s-master bin]# for i in k8s-node01 k8s-node02; do scp kubelet kube-proxy $i:/usr/local/bin/; done

[root@k8s-master work]# mkdir -p /etc/kubernetes/ # kubernetes组件配置文件存放目录

[root@k8s-master work]# mkdir -p /etc/kubernetes/ssl # kubernetes组件证书文件存放目录

[root@k8s-master work]# mkdir /var/log/kubernetes # kubernetes组件日志文件存放目录

?部署api-server

创建csr请求文件

[root@k8s-master work]# vim kube-apiserver-csr.json

"CN": "kubernetes",

"hosts": [

"127.0.0.1",

"192.168.1.104",

"192.168.1.107",

"192.168.1.108",

"192.168.1.109",

"192.168.1.110",

"192.168.1.111",

"10.255.0.1",

"kubernetes",

"kubernetes.default",

"kubernetes.default.svc",

"kubernetes.default.svc.cluster",

"kubernetes.default.svc.cluster.local"

],

"key":

"algo": "rsa",

"size": 2048

,

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "k8s",

"OU": "system"

]

注：

如果 hosts 字段不为空则需要指定授权使用该证书的 IP 或域名列表。

由于该证书后续被 kubernetes master 集群使用，需要将master节点的IP都填上，同时还需要填写 service 网络的首个IP。(一般是 kube-apiserver 指定的 service-cluster-ip-range 网段的第一个IP，如 10.254.0.1)

生成证书和token文件

[root@k8s-master work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-apiserver-csr.json | cfssljson -bare kube-apiserver

[root@k8s-master work]# cat > token.csv < < EOF

$(head -c 16 /dev/urandom | od -An -t x | tr -d),kubelet-bootstrap,10001,"system:kubelet-bootstrap"

EOF

创建配置文件

[root@k8s-master work]# vim kube-apiserver.conf

KUBE_APISERVER_OPTS="--enable-admission-plugins=NamespaceLifecycle,NodeRestriction,LimitRanger,ServiceAccount,DefaultStorageClass,ResourceQuota \\

--anonymous-auth=false \\

--bind-address=192.168.1.104 \\

--secure-port=6443 \\

--advertise-address=192.168.1.104 \\

--insecure-port=0 \\

--authorization-mode=Node,RBAC \\

--runtime-config=api/all=true \\

--enable-bootstrap-token-auth \\

--service-cluster-ip-range=10.255.0.0/16 \\

--token-auth-file=/etc/kubernetes/token.csv \\

--service-node-port-range=30000-50000 \\

--tls-cert-file=/etc/kubernetes/ssl/kube-apiserver.pem \\

--tls-private-key-file=/etc/kubernetes/ssl/kube-apiserver-key.pem \\

--client-ca-file=/etc/kubernetes/ssl/ca.pem \\

--kubelet-client-certificate=/etc/kubernetes/ssl/kube-apiserver.pem \\

--kubelet-client-key=/etc/kubernetes/ssl/kube-apiserver-key.pem \\

--service-account-key-file=/etc/kubernetes/ssl/ca-key.pem \\

--service-account-signing-key-file=/etc/kubernetes/ssl/ca-key.pem \\

--service-account-issuer=https://kubernetes.default.svc.cluster.local \\

--etcd-cafile=/etc/etcd/ssl/ca.pem \\

--etcd-certfile=/etc/etcd/ssl/etcd.pem \\

--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \\

--etcd-servers=https://192.168.1.104:2379,https://192.168.1.107:2379,https://192.168.1.108:2379 \\

--enable-swagger-ui=true \\

--allow-privileged=true \\

--apiserver-count=3 \\

--audit-log-maxage=30 \\

--audit-log-maxbackup=3 \\

--audit-log-maxsize=100 \\

--audit-log-path=/var/log/kube-apiserver-audit.log \\

--event-ttl=1h \\

--alsologtostderr=true \\

--logtostderr=false \\

--log-dir=/var/log/kubernetes \\

--v=4"

注：

–logtostderr：启用日志

–v：日志等级

–log-dir：日志目录

–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机制

–token-auth-file：bootstrap token文件

–service-node-port-range：Service nodeport类型默认分配端口范围

–kubelet-client-xxx：apiserver访问kubelet客户端证书

–tls-xxx-file：apiserver https证书

–etcd-xxxfile：连接Etcd集群证书

–audit-log-xxx：审计日志

创建服务启动文件

[root@k8s-master work]# vim kube-apiserver.service

[Unit]

Description=Kubernetes API Server

Documentation=https://github.com/kubernetes/kubernetes

After=etcd.service

Wants=etcd.service

[Service]

EnvironmentFile=-/etc/kubernetes/kube-apiserver.conf

ExecStart=/usr/local/bin/kube-apiserver $KUBE_APISERVER_OPTS

Restart=on-failure

RestartSec=5

Type=notify

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target

同步相关文件

[root@k8s-master work]# cp ca*.pem /etc/kubernetes/ssl/

[root@k8s-master work]# cp kube-apiserver*.pem /etc/kubernetes/ssl/

[root@k8s-master work]# cp token.csv /etc/kubernetes/

[root@k8s-master work]# cp kube-apiserver.conf /etc/kubernetes/
[root@k8s-master work]# cp kube-apiserver.service /usr/lib/systemd/system/

#启动服务

[root@k8s-master work]# systemctl daemon-reload

[root@k8s-master work]# systemctl enable kube-apiserver

[root@k8s-master work]# systemctl start kube-apiserver

[root@k8s-master work]# systemctl status kube-apiserver

#测试

[root@k8s-master work]# curl --insecure https://192.168.1.104:6443/

有返回说明启动正常

?部署kubectl

创建csr请求文件

[root@k8s-master work]# vim admin-csr.json

"CN": "admin",

"hosts": [],

"key":

"algo": "rsa",

"size": 2048

,

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "system:masters",
"OU": "system"

]

说明：

后续 kube-apiserver 使用 RBAC 对客户端(如 kubelet、kube-proxy、Pod)请求进行授权；

kube-apiserver 预定义了一些 RBAC 使用的 RoleBindings，如 cluster-admin 将 Group system:masters 与 Role cluster-admin 绑定，该 Role 授予了调用kube-apiserver 的所有 API的权限；

O指定该证书的 Group 为 system:masters，kubelet 使用该证书访问 kube-apiserver 时，由于证书被 CA 签名，所以认证通过，同时由于证书用户组为经过预授权的 system:masters，所以被授予访问所有 API 的权限；

注：

这个admin 证书，是将来生成管理员用的kube config 配置文件用的，现在我们一般建议使用RBAC 来对kubernetes 进行角色权限控制， kubernetes 将证书中的CN 字段作为User， O 字段作为 Group；

“O”: “system:masters”, 必须是system:masters，否则后面kubectl create clusterrolebinding报错。

生成证书

[root@k8s-master work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin

[root@k8s-master work]# cp admin*.pem /etc/kubernetes/ssl/

创建kubeconfig配置文件

kubeconfig 为 kubectl 的配置文件，包含访问 apiserver 的所有信息，如 apiserver 地址、CA 证书和自身使用的证书

设置集群参数

[root@k8s-master work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://192.168.1.104:6443 --kubeconfig=kube.config

设置客户端认证参数

[root@k8s-master work]# kubectl config set-credentials admin --client-certificate=admin.pem --client-key=admin-key.pem --embed-certs=true --kubeconfig=kube.config

设置上下文参数

[root@k8s-master work]# kubectl config set-context kubernetes --cluster=kubernetes --user=admin --kubeconfig=kube.config

设置默认上下文

[root@k8s-master work]# kubectl config use-context kubernetes --kubeconfig=kube.config

[root@k8s-master work]# mkdir ~/.kube

[root@k8s-master work]# cp kube.config ~/.kube/config

授权kubernetes证书访问kubelet api权限

[root@k8s-master work]# kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernetes

查看集群组件状态

[root@k8s-master work]# kubectl cluster-info

[root@k8s-master work]# kubectl get componentstatuses

[root@k8s-master work]# kubectl get all --all-namespaces

?部署kube-controller-manager

创建csr请求文件

[root@k8s-master work]# vim kube-controller-manager-csr.json

"CN": "system:kube-controller-manager",

"key":

"algo": "rsa",

"size": 2048

,

"hosts": [

"127.0.0.1",

"192.168.1.104",

"192.168.1.107",

"192.168.1.108"

],

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "system:kube-controller-manager",

"OU": "system"

]

注：

hosts 列表包含所有 kube-controller-manager 节点 IP；

CN 为 system:kube-controller-manager、O 为 system:kube-controller-manager，kubernetes 内置的 ClusterRoleBindings system:kube-controller-manager 赋予 kube-controller-manager 工作所需的权限

#生成证书

[root@k8s-master work]# 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

[root@k8s-master work]# ls kube-controller-manager*.pem

#创建kube-controller-manager的kubeconfig

设置集群参数

[root@k8s-master work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://192.168.1.104:6443 --kubeconfig=kube-controller-manager.kubeconfig

设置客户端认证参数

[root@k8s-master work]# kubectl config set-credentials system:kube-controller-manager --client-certificate=kube-controller-manager.pem --client-key=kube-controller-manager-key.pem --embed-certs=true --kubeconfig=kube-controller-manager.kubeconfig

设置上下文参数

[root@k8s-master work]# kubectl config set-context system:kube-controller-manager --cluster=kubernetes --user=system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig

设置默认上下文

[root@k8s-master work]# kubectl config use-context system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig

#创建配置文件

[root@k8s-master work]# vim kube-controller-manager.conf

KUBE_CONTROLLER_MANAGER_OPTS="--port=0 \\

--secure-port=10252 \\

--bind-address=127.0.0.1 \\

--kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \\

--service-cluster-ip-range=10.255.0.0/16 \\

--cluster-name=kubernetes \\

--cluster-signing-cert-file=/etc/kubernetes/ssl/ca.pem \\

--cluster-signing-key-file=/etc/kubernetes/ssl/ca-key.pem \\

--allocate-node-cidrs=true \\

--cluster-cidr=10.0.0.0/16 \\

--experimental-cluster-signing-duration=87600h \\

--root-ca-file=/etc/kubernetes/ssl/ca.pem \\

--service-account-private-key-file=/etc/kubernetes/ssl/ca-key.pem \\

--leader-elect=true \\

--feature-gates=RotateKubeletServerCertificate=true \\

--controllers=*,bootstrapsigner,tokencleaner \\

--horizontal-pod-autoscaler-use-rest-clients=true \\

--horizontal-pod-autoscaler-sync-period=10s \\

--tls-cert-file=/etc/kubernetes/ssl/kube-controller-manager.pem \\

--tls-private-key-file=/etc/kubernetes/ssl/kube-controller-manager-key.pem \\

--use-service-account-credentials=true \\

--alsologtostderr=true \\

--logtostderr=false \\

--log-dir=/var/log/kubernetes \\

--v=2"

#创建启动文件

[root@k8s-master work]# vim kube-controller-manager.service

[Unit]

Description=Kubernetes Controller Manager

Documentation=https://github.com/kubernetes/kubernetes

[Service]

EnvironmentFile=-/etc/kubernetes/kube-controller-manager.conf

ExecStart=/usr/local/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS

Restart=on-failure

RestartSec=5

[Install]

WantedBy=multi-user.target

#同步文件

[root@k8s-master work]# cp kube-controller-manager*.pem /etc/kubernetes/ssl/

[root@k8s-master work]# cp kube-controller-manager.kubeconfig /etc/kubernetes/

[root@k8s-master work]# cp kube-controller-manager.conf /etc/kubernetes/

[root@k8s-master work]# cp kube-controller-manager.service /usr/lib/systemd/system/

#启动服务

[root@k8s-master work]# systemctl daemon-reload
[root@k8s-master work]# systemctl enable kube-controller-manager

[root@k8s-master work]# systemctl start kube-controller-manager

[root@k8s-master work]# systemctl status kube-controller-manager

?部署kube-scheduler

#创建csr请求文件

[root@k8s-master work]# vim kube-scheduler-csr.json

"CN": "system:kube-scheduler",

"hosts": [

"127.0.0.1",

"192.168.1.104",

"192.168.1.107",

"192.168.1.108"

],

"key":

"algo": "rsa",

"size": 2048

,

"names": [

"C": "CN",

"ST": "Shanghai",

"L": "Shanghai",

"O": "system:kube-scheduler",

"OU": "system"

]

注：

hosts 列表包含所有 kube-scheduler 节点 IP；

CN 为 system:kube-scheduler、O 为 system:kube-scheduler，kubernetes 内置的 ClusterRoleBindings system:kube-scheduler 将赋予 kube-scheduler 工作所需的权限

#生成证书

[root@k8s-master work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler

[root@k8s-master work]# ls kube-scheduler*.pem

#创建kube-scheduler的kubeconfig

设置集群参数

[root@k8s-master work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://192.168.1.104:6443 --kubeconfig=kube-scheduler.kubeconfig

设置客户端认证参数

[root@k8s-master work]# kubectl config set-credentials system:kube-scheduler --client-certificate=kube-scheduler.pem --client-key=kube-scheduler-key.pem --embed-certs=true --kubeconfig=kube-scheduler.kubeconfig

设置上下文参数

[root@k8s-master work]# kubectl config set-context system:kube-scheduler --cluster=kubernetes --user=system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig

设置默认上下文

[root@k8s-master work]# kubectl config use-context system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig

#创建配置文件

[root@k8s-master work]# vim kube-scheduler.conf

KUBE_SCHEDULER_OPTS="--address=127.0.0.1 \\

--kubeconfig=/etc/kubernetes/kube-scheduler.kubeconfig \\

--leader-elect=true \\

--alsologtostderr=true \\

--logtostderr=false \\

--log-dir=/var/log/kubernetes \\

--v=2"

#创建服务启动文件

[root@k8s-master work]# vim kube-scheduler.service

[Unit]

Description=Kubernetes Scheduler

Documentation=https://github.com/kubernetes/kubernetes

[Service]

EnvironmentFile=-/etc/kubernetes/kube-scheduler.conf

ExecStart=/usr/local/bin/kube-scheduler $KUBE_SCHEDULER_OPTS

Restart=on-failure

RestartSec=5

[Install]

WantedBy=multi-user.target

#同步文件

[root@k8s-master work]# cp kube-scheduler*.pem /etc/kubernetes/ssl/

[root@k8s-master work]# cp kube-scheduler.kubeconfig /etc/kubernetes/

[root@k8s-master work]# cp kube-scheduler.conf /etc/kubernetes/

[root@k8s-master work]# cp kube-scheduler.service /usr/lib/systemd/system/

#启动服务

[root@k8s-master work]# systemctl daemon-reload

[root@k8s-master work]# systemctl enable kube-scheduler

[root@k8s-master work]# systemctl start kube-scheduler

[root@k8s-master work]# systemctl status kube-scheduler

?下载依赖镜像(三个节点)

[root ~]# docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2

[root ~]# docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2 k8s.gcr.io/pause:3.2

[root ~]# docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2

[root ~]# docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.7.0

[root ~]# docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.7.0 k8s.gcr.io/coredns:1.7.0

[root ~]# docker rmi registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.7.0

?部署kubelet

#创建kubelet-bootstrap.kubeconfig

[root@k8s-master work]# BOOTSTRAP_TOKEN=$(awk -F "," print $1 /etc/kubernetes/token.csv)

设置集群参数

[root@k8s-master work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://192.168.1.104:6443 --kubeconfig=kubelet-bootstrap.kubeconfig

设置客户端认证参数

[root@k8s-master work]# kubectl config set-credentials kubelet-bootstrap --token=$BOOTSTRAP_TOKEN --kubeconfig=kubelet-bootstrap.kubeconfig

设置上下文参数

[root@k8s-master work]# kubectl config set-context default --cluster=kubernetes --user=kubelet-bootstrap --kubeconfig=kubelet-bootstrap.kubeconfig

设置默认上下文

[root@k8s-master work]# kubectl config use-context default --kubeconfig=kubelet-bootstrap.kubeconfig

创建角色绑定

【二进制方式部署k8s集群(超详细)】[root@k8s-master work]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap