Differences

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--- linux_faq:kubernetes_using_single_node_as_master_and_worker [2022/04/28 10:22] – [Single node Kubernetes setup - Ubuntu 18.04] admin
+++ linux_faq:kubernetes_using_single_node_as_master_and_worker [2022/07/07 17:41] – [Cert manager] admin
@@ Line 12: / Line 12: @@
   gpg_keyring_path="/etc/apt/trusted.gpg.d/kubernetes.gpg"
   curl -fsSL "${gpg_key_url}" | gpg --dearmor | sudo tee -a ${gpg_keyring_path}
+  cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
+  overlay
+  br_netfilter
+  EOF
+  sudo modprobe overlay
+  sudo modprobe br_netfilter
+  # Setup required sysctl params, these persist across reboots.
+  cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
+  net.bridge.bridge-nf-call-iptables  = 1
+  net.ipv4.ip_forward                 = 1
+  net.bridge.bridge-nf-call-ip6tables = 1
+  EOF
+  # Apply sysctl params without reboot
+  sudo sysctl --system
   sudo apt-get update
   #sudo apt-get install -y docker.io kubeadm kubelet
@@ Line 19: / Line 37: @@
   sudo mkdir -p /etc/containerd
   containerd config default | sudo tee /etc/containerd/config.toml
-  ## Setup Docker daemon.
-  #cat > /etc/docker/daemon.json <<EOF
-  #{
-  #  "exec-opts": ["native.cgroupdriver=systemd"],
-  #  "log-driver": "json-file",
-  #  "log-opts": {
-  #    "max-size": "100m"
-  #  },
-  #  "storage-driver": "overlay2"
-  #}
-  #EOF
-  #sudo mkdir -p /etc/systemd/system/docker.service.d
-  # Enable services and restart docker.
-  #sudo systemctl daemon-reload
-  #sudo systemctl enable docker
-  #sudo systemctl restart docker
-  #sudo systemctl enable kubelet.service
-  #sudo usermod -a -G docker $USER
-  # To ensure that kubelet starts only after docker:
-  #cat << EOF | sudo tee /etc/systemd/system/kubelet.service.d/12-after-docker.conf
-  #[Unit]
-  #After=docker.service
-  #EOF
   cat << EOF | sudo tee /etc/systemd/system/kubelet.service.d/12-after-docker.conf
@@ Line 52: / Line 42: @@
   After=containerd.service
   EOF
+  sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
+  sudo service containerd restart
   # Kubernetes Cluster Init
-  sudo kubeadm init --pod-network-cidr=10.244.0.0/16
+  sudo kubeadm init --cri-socket /run/containerd/containerd.sock --pod-network-cidr=10.244.0.0/16
   mkdir -p $HOME/.kube
@@ Line 288: / Line 283: @@
   helm upgrade --reuse-values -n ingress nginx ingress-nginx/ingress-nginx -f ./nginx-ingress-monitoring-values.yaml
 ===== Cert manager =====
-https://docs.cert-manager.io/en/latest/tutorials/acme/quick-start/
+https://cert-manager.io/docs/installation/helm/ \\
-https://docs.cert-manager.io/en/latest/getting-started/install/kubernetes.html#installing-with-helm \\
 Устанавливаем:
 <code>kubectl create namespace cert-manager
@@ Line 300: / Line 294: @@
   --create-namespace \
   --set installCRDs=true \
-  --version v1.5.4
+  --version v1.8.2
 </code>
 https://docs.cert-manager.io/en/latest/tasks/issuers/index.html \\