kubernetes controller rolling reboot

rolling-controller-reboot.sh

#!/usr/bin/env bash

kubectl get nodes -o=json | jq -c -r '.items | map(select(.spec | has("taints"))) | map(select(.spec.taints[].value == "master")) | map(select(.spec.taints[].key == "node.alpha.kubernetes.io/role")) | .[]' | while read object; do

    NODE_NAME=$(echo "$object" | jq -r .metadata.name)
    INSTANCE_ID=$(echo "$object" | jq -r .spec.externalID)
    echo "rebooting node=$NODE_NAME instance-id=$INSTANCE_ID"

    kubectl drain ${NODE_NAME} --ignore-daemonsets --force

    aws ec2 reboot-instances --instance-ids ${INSTANCE_ID}

    sleep 30

    echo "Node rebooted, waiting for node to be marked as 'Ready'"

    END=0
    while [ ${END} -eq 0 ]; do
        RESULT=$(kubectl get nodes | grep ${NODE_NAME})

        if [ $? -eq 0 ]; then
            if echo "$RESULT" | grep ${NODE_NAME}  | grep -q "(TLS|EOF|NotReady)"; then
                X=1
            else
                echo "${NODE_NAME} is marked as Ready"
                END=1
            fi
        else
            echo "$RESULT"
        fi

        echo "${NODE_NAME} NotReady"
        sleep 10

    done

    kubectl uncordon ${NODE_NAME}

done

Kinda gross and needs cleaned up but seems to work for now