Modified 2 files

[eliot.git] / scripts / kubernetes_reset.sh

diff --git a/scripts/kubernetes_reset.sh b/scripts/kubernetes_reset.sh
new file mode 100644 (file)
index 0000000..187355b
--- /dev/null
+++ b/scripts/kubernetes_reset.sh
@@ -0,0 +1,78 @@
+########################################################################################
+#                                                                                      #
+# The script is to reset the settings on ELIOT Manager and ELIOT nodes                 #
+# before running the setup.sh file again on the same setup.                            #
+# It resets the settings of kubeadm and restarts its service                           #
+# It releases the ports used.                                                          #
+# It deletes the files created for kubernetes on node machine                          #
+# Script is tested in Ubuntu 16.04 version.                                            #
+########################################################################################
+
+# constants
+OSPLATFORM=$(awk -F= '/^NAME/{print $2}' /etc/os-release)
+
+show_help()
+{
+  echo "The script is to reset the settings on ELIOT Manager and ELIOT nodes which "
+  echo "needs to be done before executing the setup.sh file again."
+  echo "The changes will be first executed on manager machine and then on the node machines."
+  echo "It will pick the node machine details from nodelist file"
+}
+
+# Resetting ELIOT Manager Node
+reset_k8smaster()
+{
+ sudo yes y | kubeadm reset
+ sudo apt-get install iptables
+ sudo iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
+ sudo apt-get install ipvsadm
+ sudo systemctl restart kubelet
+ sudo fuser -k -n tcp 10250
+
+reset_k8sworkers
+}
+
+#Resetting ELIOT Worker Node
+reset_k8sworkers()
+{
+RESET_KUBEADM="sudo yes y | kubeadm reset"
+INSTALL_IPVSADM="sudo apt-get install ipvsadm"
+RESTART_KUBELET="sudo systemctl restart kubelet"
+RESET_PORT="sudo fuser -k -n tcp 10250"
+#REMOVE_KUBE_FILES="cd /etc/kubernetes && sudo rm -rf !('manifests') "
+REMOVE_KUBE_FILES="cd /etc/kubernetes && sudo rm -rf bootstrap-kubelet.conf kubelet.conf pki"
+REMOVE_CADVISOR_FILES="docker rm cadvisor-iot-node1"
+
+#Read all the Worker Node details from nodelist file.
+ while read line
+ do
+     nodeinfo="${line}"
+     nodeusr=$(echo ${nodeinfo} | cut -d"|" -f1)
+     nodeip=$(echo ${nodeinfo} | cut -d"|" -f2)
+     nodepaswd=$(echo ${nodeinfo} | cut -d"|" -f3)
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${RESET_KUBEADM} < /dev/null
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${INSTALL_IPVSADM} < /dev/null
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${RESTART_KUBELET} < /dev/null
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${RESET_PORT} < /dev/null
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${REMOVE_KUBE_FILES} < /dev/null
+     sshpass -p ${nodepaswd} ssh ${nodeusr}@${nodeip} ${REMOVE_CADVISOR_FILES} < /dev/null
+ done < nodelist > /dev/null 2>&1
+}
+
+verify_reset_status()
+{
+echo "Success!!"
+}
+
+if [ $1 == "--help" ] || [ $1 == "-h" ];
+then
+  show_help
+  exit 0
+fi
+
+if [[ $OSPLATFORM = *Ubuntu* ]]; then
+   reset_k8smaster
+   verify_reset_status
+else
+   echo "The script supports only Linux - Ubuntu"
+fi