8000 kubernetes_setup · angudadevops/Python-Scripting@3e09468 · GitHub
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kubernetes_setup
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‎kubernetes_setup.py

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import subprocess
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from subprocess import STDOUT, check_call
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import apt
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import sys
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import os
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import time
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def install_pkg():
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try:
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check_call(["curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo apt-key fingerprint 0EBFCD88"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(['sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"'], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo mkdir -p /etc/apt/sources.list.d/"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(['echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list'], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo apt update"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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pkg_name = ["apt-transport-https", "ca-certificates", "curl", "gnupg-agent", "software-properties-common", "docker-ce=5:19.03.12~3-0~ubuntu-bionic", "docker-ce-cli=5:19.03.12~3-0~ubuntu-bionic", "containerd.io", "kubelet=1.18.8-00", "kubectl=1.18.8-00", "kubeadm=1.18.8-00"]
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for item in pkg_name:
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print("Installing {}".format(item))
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check_call(["sudo", "apt", "install", "--allow-downgrades", "-y", item], stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo systemctl start docker"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo systemctl enable docker"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo apt-mark hold kubelet kubeadm kubectl"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo swapoff -a"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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except Exception as e:
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print(e)
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def install_k8s():
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try:
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kube = check_call(["kubectl cluster-info"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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if kube == 0:
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print("**********************************************")
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print("Kubernetes Cluster is up and running")
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print("**********************************************")
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print(" ")
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check_call(["kubectl get pods -A"], shell=True)
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elif kube != 0:
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print("Kubernetes Cluster is starting")
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except Exception as e:
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print(" ")
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print("**********************************************")
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print("Installing Docker and Kubernetes Dependencies")
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print("**********************************************")
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print(" ")
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install_pkg()
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print(" ")
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print("**********************************************")
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print("Installing Kubernetes Cluster")
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print("**********************************************")
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print(" ")
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check_call(["sudo kubeadm reset --force"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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print("Initializing kubernetes cluster 'sudo kubeadm init --pod-network-cidr=192.168.0.0/16'")
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check_call(["sudo kubeadm init --pod-network-cidr=192.168.0.0/16"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo rm -rf $HOME/.kube"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["mkdir -p $HOME/.kube"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo chown $(id -u):$(id -g) $HOME/.kube/config"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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print("Applying Calico CNI to kubernetes cluster")
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check_call(["kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["kubectl taint nodes --all node-role.kubernetes.io/master-"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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time.sleep(15)
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print(" ")
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print("Kubeadm Token to Join the workers to the cluster")
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print(" ")
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print('-' * 150)
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#print("-------------------------------------------------------------------------------------------------")
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check_call(["sudo kubeadm token create --print-join-command"], shell=True, stderr=open(os.devnull,'wb'))
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print('-' * 150)
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print(" ")
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print("**********************************************")
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print("Kubernetes cluster is up and running")
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print("**********************************************")
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print(" ")
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check_call(["kubectl get pods -A"], shell=True)
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def remove_reset():
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print("**********************************************")
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print("Remove and Reset cluster")
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print("**********************************************")
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try:
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check_call(["sudo kubeadm reset --force"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo rm -rf $HOME/.kube"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo apt autoremove -y"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo apt purge -y --allow-change-held-packages kubelet kubeadm kubectl docker-ce* container* "], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo rm -rf /var/lib/etcd /etc/kubernetes /usr/bin/helm /var/lib/docker /etc/docker /var/log/containers"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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except Exception as e:
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print(e)
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check_call(["sudo apt purge -y --allow-change-held-packages kubelet kubeadm kubectl docker-ce* container* "], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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check_call(["sudo rm -rf /var/lib/etcd /etc/kubernetes /usr/bin/helm /var/lib/docker /etc/docker /var/log/containers"], shell=True, stdout=open(os.devnull,'wb'), stderr=STDOUT)
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print("Usage: \n \n python kubernetes_setup.py install: Install Kubernetes stack\n python kubernetes_setup.py uninstall: Uninstall Kubernetes stack")
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sys.exit()
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elif len(sys.argv) == 2:
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if sys.argv[1] == "install":
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install_k8s()
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elif sys.argv[1] == "uninstall":
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remove_reset()
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else:
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print("Usage: \n python kubernetes_setup.py install: Install Kubernetes stack\n python kubernetes_setup.py uninstall: Uninstall Kubernetes stack")
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sys.exit()

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