igozhang

——

    k8s_solo_ubuntu

    在ubuntu20.04上使用kubeadm部署k8s1.29.10单节点
    使用本地目录'/data/storageclass'做默认sc
    避免使用最新版本,应该使用较新的稳定版本,所有k8s组件指定版本安装

    环境准备

    swapoff -a
    sed -i '/ swap / s/^/#/' /etc/fstab
    
    modprobe overlay
    modprobe br_netfilter
    
    cat > /etc/sysctl.d/k8s.conf <<EOF
    net.bridge.bridge-nf-call-iptables  = 1
    net.bridge.bridge-nf-call-ip6tables = 1
    net.ipv4.ip_forward                 = 1
    EOF
    sysctl --system
    
    ufw disable
    

    安装

    1. 安装containerd
    apt update
    apt install -y apt-transport-https ca-certificates curl gnupg lsb-release
    
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
    echo \
      "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
      $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
    
    apt update
    apt install -y containerd.io=1.6.28-1
    mkdir -p /etc/containerd
    containerd config default | tee /etc/containerd/config.toml
    sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
    systemctl restart containerd
    systemctl enable containerd
    systemctl status containerd --no-pager
    
    2. 安装kubeadm 
    mkdir -p /etc/apt/keyrings
    curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.29/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
    echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.29/deb/ /" | tee /etc/apt/sources.list.d/kubernetes.list
    apt update
    
    K8S_VERSION=1.29.10-1.1
    apt install -y \
      kubelet=${K8S_VERSION} \
      kubeadm=${K8S_VERSION} \
      kubectl=${K8S_VERSION}
    
    apt-mark hold kubelet kubeadm kubectl
    systemctl enable --now kubelet
    systemctl status kubelet --no-pager
    
    3. 初始化k8s集群
    kubeadm init \
      --kubernetes-version=v1.29.10 \
      --pod-network-cidr=192.168.0.0/16 \
      --apiserver-advertise-address=$(hostname -I | awk '{print $1}')
    
    kubeadm join 10.80.238.88:6443 --token zno637.nnu9cl7g51654888 \
            --discovery-token-ca-cert-hash sha256:f44b44b03587715beeaa5fdfe15bd6c39002b6717803e7e161aa24039ce5b888
    
    mkdir -p $HOME/.kube
    cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    chown $(id -u):$(id -g) $HOME/.kube/config
    kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.27.3/manifests/calico.yaml
    这个Calico插件有bird内存泄露问题,以后需要安装其他网络组件
     #先配置了CNI插件Calico集群才能ready
    
    kubectl get nodes
    kubectl version
     # 移除污点
    kubectl taint nodes --all node-role.kubernetes.io/control-plane-
    kubectl taint nodes --all node-role.kubernetes.io/master-
    

    其他组件ingress,默认sc

    kubectl create namespace ingress-nginx 2>/dev/null || true
    kubectl create secret tls tls-default \
      --cert=/igo/ssl/tls.pem \
      --key=/igo/ssl/tls.key \
      -n ingress-nginx \
      --dry-run=client -o yaml | kubectl apply -f -
    
    helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
    helm repo update
    helm install ingress-nginx ingress-nginx/ingress-nginx \
      -n ingress-nginx \
      --create-namespace \
      --version 4.11.5 \
      --set controller.kind=DaemonSet \
      --set controller.hostNetwork=true \
      --set controller.extraArgs.default-ssl-certificate=ingress-nginx/tls-default \
      --set controller.service.enabled=false \
      --set controller.ingressClassResource.default=true
    

    MP3