From 45f8313de492824262a0a1bfd360ec22adf22c44 Mon Sep 17 00:00:00 2001
From: jorgeboti <jorgeboti@pheros.es>
Date: Wed, 28 Jul 2021 07:09:19 +0000
Subject: [PATCH] Actualizar 'README.md'

---
 README.md | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 1b6543b..01f6357 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,58 @@
 # kubeadm-photon-os
 
-##Instalación de ETCD Externo
+### Pre-Requisitos
+
+sed -i -e "s/^PermitRootLogin *no$/PermitRootLogin yes/" /etc/ssh/sshd_config && systemctl restart sshd
+
+mkdir /etc/docker
+
+cat > /etc/docker/daemon.json <<EOF
+{
+  "exec-opts": ["native.cgroupdriver=systemd"],
+  "log-driver": "json-file",
+  "log-opts": {
+    "max-size": "100m"
+  },
+  "storage-driver": "overlay2",
+  "storage-opts": [
+    "overlay2.override_kernel_check=true"
+  ]
+}
+EOF
+ 
+systemctl daemon-reload
+systemctl enable docker
+systemctl restart docker
+
+tdnf install -y tar wget ebtables ethtool socat conntrack-tools
+CNI_VERSION="v0.8.2"
+mkdir -p /opt/cni/bin
+curl -L "https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-amd64-${CNI_VERSION}.tgz" | tar -C /opt/cni/bin -xz
+DOWNLOAD_DIR=/usr/local/bin
+CRICTL_VERSION="v1.21.3"
+curl -L "https://github.com/kubernetes-sigs/cri-tools/releases/download/${CRICTL_VERSION}/crictl-${CRICTL_VERSION}-linux-amd64.tar.gz" | tar -C $DOWNLOAD_DIR -xz
+RELEASE="$(curl -sSL https://dl.k8s.io/release/stable.txt)"
+cd $DOWNLOAD_DIR
+curl -L --remote-name-all https://storage.googleapis.com/kubernetes-release/release/${RELEASE}/bin/linux/amd64/{kubeadm,kubelet,kubectl}
+chmod +x {kubeadm,kubelet,kubectl}
+RELEASE_VERSION="v0.2.7"
+curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${RELEASE_VERSION}/cmd/kubepkg/templates/latest/deb/kubelet/lib/systemd/system/kubelet.service" | sed "s:/usr/bin:${DOWNLOAD_DIR}:g" | tee /etc/systemd/system/kubelet.service
+mkdir -p /etc/systemd/system/kubelet.service.d
+curl -sSL "https://raw.githubusercontent.com/kubernetes/release/${RELEASE_VERSION}/cmd/kubepkg/templates/latest/deb/kubeadm/10-kubeadm.conf" | sed "s:/usr/bin:${DOWNLOAD_DIR}:g" | tee /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
+systemctl enable --now kubelet
+systemctl daemon-reload
+
+cat <<EOF >  /etc/sysctl.d/k8s.conf
+net.ipv4.ip_forward = 1
+net.bridge.bridge-nf-call-ip6tables = 1
+net.bridge.bridge-nf-call-iptables = 1
+EOF
+sysctl --system
+
+systemctl disable iptables
+systemctl stop iptables
+
+### Instalación de ETCD Externo
 
 wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
 wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64