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gynagarrogynagarro
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new test
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‎terraform/modules/k8s-cluster/master.sh‎

Lines changed: 82 additions & 88 deletions
Original file line numberDiff line numberDiff line change
@@ -2,109 +2,103 @@
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set -e
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# Set hostname
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echo "-------------Setting Hostname-------------"
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hostnamectl set-hostname "$1"
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echo "-------------Setting hostname-------------"
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hostnamectl set-hostname $1
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# Disable Swap
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echo "-------------Disabling Swap-------------"
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# Disable swap
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echo "-------------Disabling swap-------------"
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swapoff -a
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sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
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# Install Dependencies
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echo "-------------Installing Required Packages-------------"
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apt-get update -y
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apt-get install -y curl wget gpg apt-transport-https ca-certificates
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# Enable IP forward
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grep -qxF 'net.ipv4.ip_forward = 1' /etc/sysctl.conf || echo 'net.ipv4.ip_forward = 1' | sudo tee -a /etc/sysctl.conf
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sysctl -p
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# Download and extract containerd
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CONTAINERD_VERSION="1.7.4"
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CONTAINERD_TARBALL="containerd-${CONTAINERD_VERSION}-linux-amd64.tar.gz"
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if [ ! -f "/usr/local/bin/containerd" ]; then
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wget https://github.com/containerd/containerd/releases/download/v${CONTAINERD_VERSION}/${CONTAINERD_TARBALL}
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tar -C /usr/local -xzf ${CONTAINERD_TARBALL}
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rm -f ${CONTAINERD_TARBALL}
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else
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echo "Containerd already installed, skipping..."
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fi
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# Install containerd service file from the correct version
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wget https://raw.githubusercontent.com/containerd/containerd/v${CONTAINERD_VERSION}/containerd.service
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# Install Containerd
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echo "-------------Installing Containerd-------------"
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wget https://github.com/containerd/containerd/releases/download/v1.7.4/containerd-1.7.4-linux-amd64.tar.gz
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tar Cxzvf /usr/local containerd-1.7.4-linux-amd64.tar.gz
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wget https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
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mkdir -p /usr/local/lib/systemd/system
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mv containerd.service /usr/local/lib/systemd/system/containerd.service
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systemctl daemon-reload
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mkdir -p /etc/containerd
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containerd config default | sudo tee /etc/containerd/config.toml > /dev/null
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sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
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4421
systemctl enable --now containerd
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systemctl restart containerd
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# Install runc
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wget https://github.com/opencontainers/runc/releases/download/v1.2.3/runc.amd64
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# Install Runc
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echo "-------------Installing Runc-------------"
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wget https://github.com/opencontainers/runc/releases/download/v1.1.9/runc.amd64
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install -m 755 runc.amd64 /usr/local/sbin/runc
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rm -f runc.amd64
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echo "-------------Installing CNI Plugins-------------"
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# Define variables
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CNI_VERSION="1.6.2"
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CNI_TARBALL="cni-plugins-linux-amd64-v${CNI_VERSION}.tgz"
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CNI_DIR="/opt/cni/bin"
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mkdir -p ${CNI_DIR}
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echo "Downloading CNI plugins..."
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curl -O -L https://github.com/containernetworking/plugins/releases/download/v${CNI_VERSION}/${CNI_TARBALL}
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tar Cxzvf ${CNI_DIR} ${CNI_TARBALL}
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rm -f ${CNI_TARBALL}
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echo "CNI plugins installed successfully!"
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# Create the directory with proper permissions (if not already exists)
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sudo mkdir -p -m 755 /etc/apt/keyrings
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# Check if the key file already exists
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if [ ! -f /etc/apt/keyrings/kubernetes-apt-keyring.gpg ]; then
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# Download the key if it doesn't exist
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curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
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# Add the Kubernetes repository to the sources list
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echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
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fi
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apt-get update -y
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apt-get install -y kubelet kubeadm kubectl
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apt-mark hold kubelet kubeadm kubectl
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# Run kubeadm init
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kubeadm init --pod-network-cidr=192.168.0.0/16
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84-
# Set up kubeconfig for the ubuntu user (or your specific user)
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mkdir -p $HOME/.kube
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cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
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chown $(id -u):$(id -g) $HOME/.kube/config
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# Install CNI
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echo "-------------Installing CNI-------------"
30+
wget https://github.com/containernetworking/plugins/releases/download/v1.2.0/cni-plugins-linux-amd64-v1.2.0.tgz
31+
mkdir -p /opt/cni/bin
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tar Cxzvf /opt/cni/bin cni-plugins-linux-amd64-v1.2.0.tgz
33+
34+
# Install CRICTL
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echo "-------------Installing CRICTL-------------"
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VERSION="v1.28.0" # check latest version in /releases page
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wget https://github.com/kubernetes-sigs/cri-tools/releases/download/$VERSION/crictl-$VERSION-linux-amd64.tar.gz
38+
tar zxvf crictl-$VERSION-linux-amd64.tar.gz -C /usr/local/bin
39+
rm -f crictl-$VERSION-linux-amd64.tar.gz
40+
41+
cat <<EOF | sudo tee /etc/crictl.yaml
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runtime-endpoint: unix:///run/containerd/containerd.sock
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image-endpoint: unix:///run/containerd/containerd.sock
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timeout: 2
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debug: false
46+
pull-image-on-create: false
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EOF
48+
49+
# Forwarding IPv4 and letting iptables see bridged traffic
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echo "-------------Setting IPTables-------------"
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cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
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overlay
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br_netfilter
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55+
EOF
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modprobe overlay
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modprobe br_netfilter
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cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
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net.bridge.bridge-nf-call-iptables = 1
60+
net.bridge.bridge-nf-call-ip6tables = 1
61+
net.ipv4.ip_forward = 1
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EOF
63+
64+
sysctl --system
65+
sysctl net.bridge.bridge-nf-call-iptables net.bridge.bridge-nf-call-ip6tables net.ipv4.ip_forward
66+
modprobe br_netfilter
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sysctl -p /etc/sysctl.conf
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69+
# Install kubectl, kubelet and kubeadm
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echo "-------------Installing Kubectl, Kubelet and Kubeadm-------------"
71+
apt-get update && sudo apt-get install -y apt-transport-https curl
72+
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
73+
74+
cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
75+
deb https://apt.kubernetes.io/ kubernetes-xenial main
76+
EOF
77+
78+
apt update -y
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apt install -y kubelet kubeadm kubectl
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apt-mark hold kubelet kubeadm kubectl
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kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
82+
echo "-------------Printing Kubeadm version-------------"
83+
kubeadm version
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91-
echo "Kubernetes initialization complete!"
85+
echo "-------------Pulling Kueadm Images -------------"
86+
kubeadm config images pull
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93-
# Check if the join-command.sh file already exists
94-
if [ ! -f /home/ubuntu/join-command.sh ]; then
95-
echo "Creating join command file..."
88+
echo "-------------Running kubeadm init-------------"
89+
kubeadm init
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97-
# Create a new token and print the join command
98-
kubeadm token create --print-join-command > /home/ubuntu/join-command.sh
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100-
# Make the script executable
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chmod +x /home/ubuntu/join-command.sh
91+
echo "-------------Copying Kubeconfig-------------"
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mkdir -p /root/.kube
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cp -iv /etc/kubernetes/admin.conf /root/.kube/config
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sudo chown $(id -u):$(id -g) /root/.kube/config
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echo "Join command created and file made executable."
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else
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echo "Join command file already exists, skipping creation."
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fi
96+
echo "-------------Exporting Kubeconfig-------------"
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export KUBECONFIG=/etc/kubernetes/admin.conf
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kubeadm version
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kubectl version
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echo "-------------Deploying Weavenet Pod Networking-------------"
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kubectl apply -f https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s.yaml
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echo "-------------Creating file with join command-------------"
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kubeadm token create --print-join-command > /home/ubuntu/join-command.sh
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chmod +x /home/ubuntu/join-command.sh

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