From d05b82b7f05b1b535a03768360d1e66264bdfb68 Mon Sep 17 00:00:00 2001
From: Sambo Chea <7059827+sombochea@users.noreply.github.com>
Date: Sat, 9 Oct 2021 17:18:34 +0700
Subject: [PATCH] Updated and add containerd install

---
 README.md | 51 +++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 49 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 439d495..a3cbe0a 100644
--- a/README.md
+++ b/README.md
@@ -88,8 +88,51 @@ sudo systemctl enable --now kubelet
 ```shell
 kubeadm version
 ```
+### 5. Configure containerd
+```shell
+cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
+overlay
+br_netfilter
+EOF
 
-#### Disable swap and install docker.io
+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
+```
+
+```shell
+sudo mkdir -p /etc/containerd
+containerd config default | sudo tee /etc/containerd/config.toml
+
+sudo systemctl restart containerd
+```
+
+- Update config
+```shell
+sudo nano /etc/containerd/config.toml
+```
+- Change SystemdCgroup from **false** to **true**
+```toml
+[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
+  [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
+    SystemdCgroup = true
+```
+- Restart containerd service
+```shell
+sudo systemctl restart containerd
+```
+
+
+### 6. Disable swap and install docker.io
 ```shell
 sudo swapoff -a
 wget https://sh.osa.cubetiqs.com/docker-setup.sh
@@ -116,7 +159,7 @@ EOF
 sudo apt-get -y install socat conntrack
 ```
 
-### 5. Cluster on Master node
+### 7. Cluster on Master node
 ```shell
 sudo kubeadm init
 
@@ -128,3 +171,7 @@ sudo chown $(id -u):$(id -g) $HOME/.kube/config
 ```shell
 kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
 kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
+```
+
+#### References
+- https://kubernetes.io/docs/setup/production-environment/container-runtimes/#docker