init/k8s

初始化每个节点环境

配置 k8s 属性

# k8s containerd 版本
export K8S_VERSION=1.32
export CONTAINERD_VERSION=2.0.2
export CALICO_VERSION=3.27.5
# 镜像源 k8s_version
export mirrors=docker.martin98.com/k8s
export k8s_version=1.32.1
# 网段配置
export pod_subnet=10.101.0.0/16
export service_subnet=10.100.0.0/16

# 设置
curl -sSL https://git.martin98.com/MartinFarm/init/raw/branch/main/init-k8s.sh | bash

# 配置主机 host
cat >> /etc/hosts <<EOF

EOF

cat <<EOF > kubeadm-config.yaml
apiVersion: kubeadm.k8s.io/v1beta4
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: $(openssl rand -hex 3).$(openssl rand -hex 8)
  ttl: 24h0m0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: $(hostname -I | awk '{print $1}')
  bindPort: 6443
nodeRegistration:
  criSocket: unix:///var/run/containerd/containerd.sock
  imagePullPolicy: IfNotPresent
  imagePullSerial: true
  name: k8s-test
  taints: null
timeouts:
  controlPlaneComponentHealthCheck: 4m0s
  discovery: 5m0s
  etcdAPICall: 2m0s
  kubeletHealthCheck: 4m0s
  kubernetesAPICall: 1m0s
  tlsBootstrap: 5m0s
  upgradeManifests: 5m0s
---
apiServer: {}
apiVersion: kubeadm.k8s.io/v1beta4
caCertificateValidityPeriod: 87600h0m0s
certificateValidityPeriod: 8760h0m0s
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: 
  imageRepository: $mirrors/coredns
encryptionAlgorithm: RSA-2048
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: $mirrors
kind: ClusterConfiguration
kubernetesVersion: $k8s_version
networking:
  dnsDomain: cluster.local
  podSubnet: $pod_subnet
  serviceSubnet: $service_subnet
proxy: {}
scheduler: {}
EOF

# 开始安装
kubeadm init --config=kubeadm-config.yaml --upload-certs --v=9
# 配置
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
export KUBECONFIG=/etc/kubernetes/admin.conf

# 安装 calico
curl https://mirrors.martin98.com/repository/proxy/raw.githubusercontent.com/projectcalico/calico/v$CALICO_VERSION/manifests/calico.yaml -O
sed -i '/^[[:space:]]*# - name: CALICO_IPV4POOL_CIDR/s/# //' calico.yaml
sed -i '/CALICO_IPV4POOL_CIDR/ {n; s|#\s||; s|value: ".*"|value: "'"$pod_subnet"'"|;}' calico.yaml
kubectl apply -f calico.yaml

加入集群

kubeadm token create --print-join-command
# worker 加入
kubeadm join 10.1.2.200:6443 \
  --token ??? \
  --discovery-token-ca-cert-hash ???
# admin 加入
kubeadm join 10.1.2.200:6443 \
  --token ??? \
  --discovery-token-ca-cert-hash ??? \
  --control-plane
# 验证集群
kubectl get nodes