二进制安装k8s（单master节点）

william-Q

2068人浏览 · 2022-05-23 13:31:38

william-Q · 2022-05-23 13:31:38 发布

二进制安装k8s（单master节点）

一、二进制基本配置
二、二进制系统和内核升级及基本组件安装
三、二进制生成证书详情
四、二进制K8s组件配置
五、二进制使用Bootstrapping自动颁发证书
- 1、创建bootstrap（master节点）
- 2、创建 bootstrap（master节点）
六、二进制Node节点及Calico配置
七、二进制CoreDNS&Metrics
- 1、安装CoreDNS（master节点）
- 2、安装Metrics Server
八、生产环境k8s集群关键性配置

一、二进制基本配置

1、配置master节点hosts文件（master节点）

echo "
172.16.55.150 pro-k8s-master
172.16.55.151 pro-k8s-node01
172.16.55.152 pro-k8s-node02
172.16.55.153 pro-k8s-node03
">> /etc/hosts

2、CentOS 7 安装 yum源（所有节点）

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
 
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

3、安装必备工具（所有节点）

yum install wget jp psmisc vim net-tools telent yum-utils device-mapper-persistent-data lvm2 git -y

4、关闭防火墙等配置（所有节点）

systemctl disable --now firewalld
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config
swapoff -a && sysctl -w vm.swappiness=0
sed -ri '/^[^#]*swap/s@^@#@' /etc/fstab

5、安装 ntpdate（所有节点）

rpm -ivh http://mirrors.wlnmp.com/centos/wlnmp-release-centos.noarch.rpm
yum install ntpdate -y

6、同步时间（所有节点）

ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
echo 'Asia/Shanghai' > /etc/timezone
ntpdate time2.aliyun.com

#5分钟同步一次
crontab -e
*/5 * * * * ntpdate time2.aliyun.com

7、配置limit（所有节点）

ulimit -SHn 65535
echo "
> * soft nofile 655360
> * hard nofile 131072
> * soft nproc 655350
> * hard nproc 655350
> * soft memlock unlimited
> * hard memlock unlimited
> ">> /etc/security/limits.conf

8、免密登录（master节点）

#一路回车
ssh-keygen -t rsa
#复制到其他节点
for i in pro-k8s-master pro-k8s-node01 pro-k8s-node02 pro-k8s-node03;do ssh-copy-id -i .ssh/id_rsa.pub $i;done

二、二进制系统和内核升级及基本组件安装

1、升级系统（所有节点）

yum update kernel kernel-devel kernel-firmware kernel-headers -y
yum update -y --exclude=kernel* && reboot

2、升级内核（master节点）

wget http://193.49.22.109/elrepo/kernel/el7/x86_64/RPMS/kernel-ml-devel-4.19.12-1.el7.elrepo.x86_64.rpm
wget http://193.49.22.109/elrepo/kernel/el7/x86_64/RPMS/kernel-ml-4.19.12-1.el7.elrepo.x86_64.rpm

for i in pro-k8s-node01 pro-k8s-node02 pro-k8s-node03;
do scp kernel-ml-4.19.12-1.el7.elrepo.x86_64.rpm kernel-ml-devel-4.19.12-1.el7.elrepo.x86_64.rpm $i:/root/;done

#（所有节点）
cd /root && yum localinstall -y kernel-ml*
grub2-set-default 0 && grub2-mkconfig -o /etc/grub2.cfg
grubby --args="user_namespace.enable=1" --update-kernel="$(grubby --default-kernel)"
grubby --default-kernel

3、二进制基本组件安装

安装 ipvsadm（所有节点）


yum install ipvsadm ipset sysstat conntrack libseccomp -y 

cat <<EOF > /etc/modules-load.d/ipvs.conf
ip_vs
ip_vs_lc
ip_vs_wlc
ip_vs_rr
ip_vs_wrr
ip_vs_lblc
ip_vs_lblcr
ip_vs_dh
ip_vs_sh
ip_vs_fo
ip_vs_nq
ip_vs_sed
ip_vs_ftp
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF

[root@pro-k8s-master ~]#systemctl enable --now systemd-modules-load.service

配置k8s内核（所有节点）

cat <<EOF > /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720

net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_timestamps = 0 
net.core.somaxconn = 16384
EOF

sysctl --system

reboot

4、安装docker（所有节点）

yum install docker-ce-19.03.* -y

mkdir /etc/docker

cat <<EOF > /etc/docker/daemon.json 
{
   "exec-opts": ["native.cgroupdriver=systemd"]
 }
EOF

systemctl daemon-reload && systemctl enable --now docker

5、下载kubernetes安装包（master节点）

wget https://dl.k8s.io/v1.23.4/kubernetes-server-linux-amd64.tar.gz

wget https://mirrors.huaweicloud.com/etcd/v3.4.18/etcd-v3.4.18-linux-amd64.tar.gz

#解压
tar -xf kubernetes-server-linux-amd64.tar.gz --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}

tar -zxvf etcd-v3.4.18-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin etcd-v3.4.18-linux-amd64/etcd{,ctl}

#查看版本
kubelet --version
etcdctl version

#复制到其他节点
WorkNodes='pro-k8s-node01 pro-k8s-node02 pro-k8s-node03'
for NODE in $WorkNodes;do scp /usr/local/bin/kube{let,-proxy} $NODE:/usr/local/bin/;done

6、下载安装源码文件（master节点）

git clone https://github.com/dotbalo/k8s-ha-install.git

三、二进制生成证书详情

1、master 下载证书（master节点）

wget "https://pkg.cfssl.org/R1.2/cfssl_linux-amd64" -O /usr/local/bin/cfssl
wget "https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64" -O /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson

mkdir /etc/etcd/ssl -p

mkdir /etc/kubernetes/pki -p

2、生成etcd证书（master节点）

cd /root/k8s-ha-install/pki/

cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca

cfssl gencert \
-ca=/etc/etcd/ssl/etcd-ca.pem \
-ca-key=/etc/etcd/ssl/etcd-ca-key.pem \
-config=ca-config.json \
-hostname=127.0.0.1,pro-k8s-master,172.16.55.150 \
-profile=kubernetes \
etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd

3、k8s组件证书（master节点）

cd /root/k8s-ha-install/pki

cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca

cfssl gencert   -ca=/etc/kubernetes/pki/ca.pem   -ca-key=/etc/kubernetes/pki/ca-key.pem   -config=ca-config.json   -hostname=10.96.0.1,172.16.55.150,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local   -profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver

cfssl gencert   -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca 

cfssl gencert   -ca=/etc/kubernetes/pki/front-proxy-ca.pem   -ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem   -config=ca-config.json   -profile=kubernetes   front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client

cfssl gencert \
   -ca=/etc/kubernetes/pki/ca.pem \
   -ca-key=/etc/kubernetes/pki/ca-key.pem \
   -config=ca-config.json \
   -profile=kubernetes \
   manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-manager

kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://172.16.55.150:6443 \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

kubectl config set-credentials system:kube-controller-manager \
     --client-certificate=/etc/kubernetes/pki/controller-manager.pem \
     --client-key=/etc/kubernetes/pki/controller-manager-key.pem \
     --embed-certs=true \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

kubectl config set-context system:kube-controller-manager@kubernetes \
    --cluster=kubernetes \
    --user=system:kube-controller-manager \
    --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

kubectl config use-context system:kube-controller-manager@kubernetes \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

cfssl gencert \
   -ca=/etc/kubernetes/pki/ca.pem \
   -ca-key=/etc/kubernetes/pki/ca-key.pem \
   -config=ca-config.json \
   -profile=kubernetes \
   scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/scheduler

kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://172.16.55.150:6443 \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-credentials system:kube-scheduler \
     --client-certificate=/etc/kubernetes/pki/scheduler.pem \
     --client-key=/etc/kubernetes/pki/scheduler-key.pem \
     --embed-certs=true \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-context system:kube-scheduler@kubernetes \
     --cluster=kubernetes \
     --user=system:kube-scheduler \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config use-context system:kube-scheduler@kubernetes \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

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

kubectl config set-cluster kubernetes     --certificate-authority=/etc/kubernetes/pki/ca.pem     --embed-certs=true     --server=https://172.16.55.150:6443     --kubeconfig=/etc/kubernetes/admin.kubeconfig

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

kubectl config set-context kubernetes-admin@kubernetes     --cluster=kubernetes     --user=kubernetes-admin     --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config use-context kubernetes-admin@kubernetes     --kubeconfig=/etc/kubernetes/admin.kubeconfig

openssl genrsa -out /etc/kubernetes/pki/sa.key 2048

openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub

4、Etcd配置（master节点）

vim /etc/etcd/etcd.config.yml

name: 'pro-k8s-master'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://172.16.55.150:2380'
listen-client-urls: 'https://172.16.55.150:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://172.16.55.150:2380'
advertise-client-urls: 'https://172.16.55.150:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'pro-k8s-master=https://172.16.55.150:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false

5、创建etcd service并启动（master节点）

vim /usr/lib/systemd/system/etcd.service

[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target

[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
Alias=etcd3.service

6、创建etcd的证书目录并启动（master节点）

mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/
systemctl daemon-reload&&systemctl enable --now etcd

四、二进制K8s组件配置

1、创建相关目录（所有节点）

mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes

2、Apiserver（master节点）

vim /usr/lib/systemd/system/kube-apiserver.service

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \
      --v=2  \
      --logtostderr=true  \
      --allow-privileged=true  \
      --bind-address=0.0.0.0  \
      --secure-port=6443  \
      --insecure-port=0  \
      --advertise-address=172.16.55.150 \
      --service-cluster-ip-range=10.96.0.0/12  \
      --service-node-port-range=30000-32767  \
      --etcd-servers=https://172.16.55.150:2379 \
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \
      --authorization-mode=Node,RBAC  \
      --enable-bootstrap-token-auth=true  \
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \
      --requestheader-allowed-names=aggregator  \
      --requestheader-group-headers=X-Remote-Group  \
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \
      --requestheader-username-headers=X-Remote-User
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

3、开启kube-apiserver（master节点）

systemctl daemon-reload && systemctl enable --now kube-apiserver

4、配置kube-controller-manager service（master节点）

vim /usr/lib/systemd/system/kube-controller-manager.service

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-controller-manager \
      --v=2 \
      --logtostderr=true \
      --address=127.0.0.1 \
      --root-ca-file=/etc/kubernetes/pki/ca.pem \
      --cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \
      --cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \
      --service-account-private-key-file=/etc/kubernetes/pki/sa.key \
      --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \
      --leader-elect=true \
      --use-service-account-credentials=true \
      --node-monitor-grace-period=40s \
      --node-monitor-period=5s \
      --pod-eviction-timeout=2m0s \
      --controllers=*,bootstrapsigner,tokencleaner \
      --allocate-node-cidrs=true \
      --cluster-cidr=192.168.0.0/12 \
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
      --node-cidr-mask-size=24
      
Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

5、启动kube-controller-manager（master节点）

systemctl daemon-reload&&systemctl enable --now kube-controller-manager

6、配置kube-scheduler service（master节点）

vim /usr/lib/systemd/system/kube-scheduler.service 

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-scheduler \
      --v=2 \
      --logtostderr=true \
      --address=127.0.0.1 \
      --leader-elect=true \
      --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

6、启动kube-scheduler service（master节点）

systemctl daemon-reload&&systemctl enable --now kube-scheduler

五、二进制使用Bootstrapping自动颁发证书

1、创建bootstrap（master节点）

bootstrap-kubelet.kubeconfig 是一个 keepalived 用来向 apiserver 申请证书的文件
注意：如果要修改bootstrap.secret.yaml的token-id和token-secret，需要保证 c8ad9c
字符串一致的，并且位数是一样的。还要保证上个命令的黄色字体：c8ad9c.2e4d610cf3e7426e与你修改的字符串要一致

cd /root/k8s-ha-install/bootstrap

kubectl config set-cluster kubernetes     --certificate-authority=/etc/kubernetes/pki/ca.pem     --embed-certs=true     --server=https://172.16.55.150:6443     --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config set-credentials tls-bootstrap-token-user     --token=c8ad9c.2e4d610cf3e7426e --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config set-context tls-bootstrap-token-user@kubernetes     --cluster=kubernetes     --user=tls-bootstrap-token-user     --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
kubectl config use-context tls-bootstrap-token-user@kubernetes     --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

2、创建 bootstrap（master节点）

mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

kubectl create -f bootstrap.secret.yaml

六、二进制Node节点及Calico配置

1、复制证书（master节点）

cd /etc/kubernetes/

for NODE in pro-k8s-node01 pro-k8s-node02 pro-k8s-node03; do
     ssh $NODE mkdir -p /etc/kubernetes/pki /etc/etcd/ssl /etc/etcd/ssl
     for FILE in etcd-ca.pem etcd.pem etcd-key.pem; do
       scp /etc/etcd/ssl/$FILE $NODE:/etc/etcd/ssl/
     done
     for FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig; do
       scp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}
 done
 done

2、Kubelet配置（所有节点）

mkdir -p /var/lib/kubelet /var/log/kubernetes /etc/systemd/system/kubelet.service.d /etc/kubernetes/manifests/

cat>  /usr/lib/systemd/system/kubelet.service <<EOF
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=docker.service
Requires=docker.service

[Service]
ExecStart=/usr/local/bin/kubelet

Restart=always
StartLimitInterval=0
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF

cat> /etc/systemd/system/kubelet.service.d/10-kubelet.conf <<EOF
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig --kubeconfig=/etc/kubernetes/kubelet.kubeconfig"
Environment="KUBELET_SYSTEM_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_CONFIG_ARGS=--config=/etc/kubernetes/kubelet-conf.yml --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.2"
Environment="KUBELET_EXTRA_ARGS=--node-labels=node.kubernetes.io/node='' "
ExecStart=
ExecStart=/usr/local/bin/kubelet \$KUBELET_KUBECONFIG_ARGS \$KUBELET_CONFIG_ARGS \$KUBELET_SYSTEM_ARGS \$KUBELET_EXTRA_ARGS
EOF



cat > /etc/kubernetes/kubelet-conf.yml <<EOF
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
authentication:
  anonymous:
    enabled: false
  webhook:
    cacheTTL: 2m0s
    enabled: true
  x509:
    clientCAFile: /etc/kubernetes/pki/ca.pem
authorization:
  mode: Webhook
  webhook:
    cacheAuthorizedTTL: 5m0s
    cacheUnauthorizedTTL: 30s
cgroupDriver: systemd
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:
  imagefs.available: 15%
  memory.available: 100Mi
  nodefs.available: 10%
  nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
volumeStatsAggPeriod: 1m0s
EOF

3、启动kubelet（所有节点）

systemctl daemon-reload && systemctl enable --now kubelet

4、kube-proxy配置（master节点）

cd /root/k8s-ha-install
kubectl -n kube-system create serviceaccount kube-proxy
kubectl create clusterrolebinding system:kube-proxy         --clusterrole system:node-proxier         --serviceaccount kube-system:kube-proxy
SECRET=$(kubectl -n kube-system get sa/kube-proxy \
    --output=jsonpath='{.secrets[0].name}')
JWT_TOKEN=$(kubectl -n kube-system get secret/$SECRET \
--output=jsonpath='{.data.token}' | base64 -d)
PKI_DIR=/etc/kubernetes/pki
K8S_DIR=/etc/kubernetes
kubectl config set-cluster kubernetes     --certificate-authority=/etc/kubernetes/pki/ca.pem     --embed-certs=true     --server=https://172.16.55.150:6443     --kubeconfig=${K8S_DIR}/kube-proxy.kubeconfig
kubectl config set-credentials kubernetes     --token=${JWT_TOKEN}     --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config set-context kubernetes     --cluster=kubernetes     --user=kubernetes     --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config use-context kubernetes     --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

将kube-proxy的systemd Service文件发送到其他节点
需要更改kube-proxy/kube-proxy.conf的clusterCIDR: 192.168.0.0/12参数为pod的网段。


for NODE in pro-k8s-master; do
     scp ${K8S_DIR}/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig
     scp kube-proxy/kube-proxy.conf $NODE:/etc/kubernetes/kube-proxy.conf
     scp kube-proxy/kube-proxy.service $NODE:/usr/lib/systemd/system/kube-proxy.service
 done
 
for NODE in pro-k8s-node01 pro-k8s-node02 pro-k8s-node03; do
     scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig
     scp kube-proxy/kube-proxy.conf $NODE:/etc/kubernetes/kube-proxy.conf
     scp kube-proxy/kube-proxy.service $NODE:/usr/lib/systemd/system/kube-proxy.service
 done

5、启动（所有节点）

systemctl daemon-reload && systemctl enable --now kube-proxy

6、Calico配置（master节点）

cd /root/k8s-ha-install/calico/

sed -i 's#etcd_endpoints: "http://<ETCD_IP>:<ETCD_PORT>"#etcd_endpoints: "https://172.16.55.150:2379"#g' calico-etcd.yaml

ETCD_CA=`cat /etc/kubernetes/pki/etcd/etcd-ca.pem | base64 | tr -d '\n'`
ETCD_CERT=`cat /etc/kubernetes/pki/etcd/etcd.pem | base64 | tr -d '\n'`
ETCD_KEY=`cat /etc/kubernetes/pki/etcd/etcd-key.pem | base64 | tr -d '\n'`

sed -i "s@# etcd-key: null@etcd-key: ${ETCD_KEY}@g; s@# etcd-cert: null@etcd-cert: ${ETCD_CERT}@g; s@# etcd-ca: null@etcd-ca: ${ETCD_CA}@g" calico-etcd.yaml

sed -i 's#etcd_ca: ""#etcd_ca: "/calico-secrets/etcd-ca"#g; s#etcd_cert: ""#etcd_cert: "/calico-secrets/etcd-cert"#g; s#etcd_key: "" #etcd_key: "/calico-secrets/etcd-key" #g' calico-etcd.yaml

POD_SUBNET="192.168.0.0/12"

sed -i 's@# - name: CALICO_IPV4POOL_CIDR@- name: CALICO_IPV4POOL_CIDR@g; s@#   value: "192.168.0.0/16"@  value: '"${POD_SUBNET}"'@g' calico-etcd.yaml

kubectl apply -f calico-etcd.yaml

七、二进制CoreDNS&Metrics

1、安装CoreDNS（master节点）

cd /root/k8s-ha-install/

#如果更改了k8s service的网段需要将coredns的serviceIP改成k8s service网段的第十个IP
sed -i "s#10.96.0.10#10.96.0.10#g" CoreDNS/coredns.yaml

kubectl create -f CoreDNS/coredns.yaml

#查看状态
kubectl get po -n kube-system -l k8s-app=kube-dns

2、安装Metrics Server

cd /root/k8s-ha-install/metrics-server-0.4.x/

kubectl  create -f . 

kubectl  top node

八、生产环境k8s集群关键性配置

1、docker配置（所有节点）

cat > /etc/docker/daemon.json <<EOF
{  
    "registry-mirrors": [
    "https://registry.docker-cn.com",
    "http://hub-mirror.c.163.com",
    "https://docker.mirrors.ustc.edu.cn"
  ],
 "exec-opts": ["native.cgroupdriver=systemd"],
 "max-concurrent-downloads": 10,
 "max-concurrent-uploads": 5,
 "log-opts": {
     "max-size": "300m",
     "max-file": "2"
 },
 "live-restore": true
}
EOF

2、更新配置（所有节点）

systemctl daemon-reload

3、controller-manager配置（master节点）

vim /usr/lib/systemd/system/kube-controller-manager.service

 --experimental-cluster-signing-duration=876000h0m0s \
 
systemctl daemon-reload&&systemctl restart kube-controller-manager

4、kubelet配置（所有节点）

cat > /etc/systemd/system/kubelet.service.d/10-kubelet.conf <<EOF
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig --kubeconfig=/etc/kubernetes/kubelet.kubeconfig"
Environment="KUBELET_SYSTEM_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_CONFIG_ARGS=--config=/etc/kubernetes/kubelet-conf.yml --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.2"
Environment="KUBELET_EXTRA_ARGS=--node-labels=node.kubernetes.io/node='' --tls-cipher-suites=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384    --image-pull-progress-deadline=30m"
ExecStart=
ExecStart=/usr/local/bin/kubelet \$KUBELET_KUBECONFIG_ARGS \$KUBELET_CONFIG_ARGS \$KUBELET_SYSTEM_ARGS \$KUBELET_EXTRA_ARGS
EOF

添加参数


systemctl daemon-reload&&systemctl restart kubelet

5、添加参数

vim /etc/kubernetes/kubelet-conf.yml

allowedUnsafeSysctls:
 - "net.core*"
 - "net.ipv4.*"
kubeReserved:
  cpu: "10m"
  memory: 10Mi
  ephemeral-storage: 10Mi
systemReserved:
  cpu: "10m"
  memory: 20Mi
  ephemeral-storage: 1Gi


#重启
systemctl daemon-reload&&systemctl restart kubelet

K8S/Kubernetes

K8S/Kubernetes社区为您提供最前沿的新闻资讯和知识内容

更多推荐

【深度】阿里巴巴万级规模 K8s 集群全局高可用体系之美

作者 | 韩堂、柘远、沉醉来源 | 阿里巴巴云原生公众号前言台湾作家林清玄在接受记者采访的时候，如此评价自己 30 多年写作生涯：“第一个十年我才华横溢，‘贼光闪现’，令周边黯然失色；第二个十年，我终于‘宝光现形’，不再去抢风头，反而与身边的美丽相得益彰；进入第三个十年，繁华落尽见真醇，我进入了‘醇光初现’的阶段，真正体味到了境界之美”。长夜有穷，真水无香。领略过了 K8s“身在江

K8S/Kubernetes

如何基于 K8s 构建下一代 DevOps 平台？

作者 | 孙健波（天元）导读：当前云原生 DevOps 体系现状如何？面临哪些挑战？如何通过 OAM 解决云原生 DevOps 场景下的诸多问题？云原生开发应用模型 OAM(Open Application Model) 社区核心成员孙健波将为大家一一解答，并分享如何基于 OAM 和 Kubernetes 打造无限能力的下一代 DevOps 平台。什么是 DevOps？为什么基于 Kub

K8S/Kubernetes

k8s 火了！

2020，上云之年，产品云端化成为一种趋势。在一线城市，很多公司都已经构建了自己的私有云环境，比如阿里云、网易云、华为云等。而Kubernetes 作为基于容器编排领域的王者，具备扩展...

K8S/Kubernetes

所有评论(0)

查看更多评论

william-Q

@qq_30253693

已为社区贡献3条内容

二进制安装k8s（单master节点）

william-Q

二进制安装k8s（单master节点）

一、二进制基本配置

1、配置master节点hosts文件（master节点）

2、CentOS 7 安装 yum源（所有节点）

3、安装必备工具（所有节点）

4、关闭防火墙等配置（所有节点）

5、安装 ntpdate（所有节点）

6、同步时间（所有节点）

7、配置limit（所有节点）

8、免密登录（master节点）

二、二进制系统和内核升级及基本组件安装

1、升级系统（所有节点）

2、升级内核（master节点）

3、二进制基本组件安装

4、安装docker（所有节点）

5、下载kubernetes安装包（master节点）

6、下载安装源码文件（master节点）

三、二进制生成证书详情

1、master 下载证书（master节点）

2、生成etcd证书（master节点）

3、k8s组件证书（master节点）

4、Etcd配置（master节点）

5、创建etcd service并启动（master节点）

6、创建etcd的证书目录并启动（master节点）

四、二进制K8s组件配置

1、创建相关目录（所有节点）

2、Apiserver（master节点）

3、开启kube-apiserver（master节点）

4、配置kube-controller-manager service（master节点）

5、启动kube-controller-manager（master节点）

6、配置kube-scheduler service（master节点）

6、启动kube-scheduler service（master节点）

五、二进制使用Bootstrapping自动颁发证书

1、创建bootstrap（master节点）

2、创建 bootstrap（master节点）

六、二进制Node节点及Calico配置

1、复制证书（master节点）

2、Kubelet配置（所有节点）

3、启动kubelet（所有节点）

4、kube-proxy配置（master节点）

5、启动（所有节点）

6、Calico配置（master节点）

七、二进制CoreDNS&Metrics

1、安装CoreDNS（master节点）

2、安装Metrics Server

八、生产环境k8s集群关键性配置

1、docker配置 （所有节点）

2、更新配置（所有节点）

3、controller-manager配置（master节点）

4、kubelet配置（所有节点）

5、添加参数

所有评论(0)

william-Q

1、docker配置（所有节点）