lifecycled handler

lifecycled.unit

[Unit]
Description=Autoscale Lifecycle Daemon
Requires=network-online.target
After=network-online.target

[Service]
Type=simple
Restart=on-failure
RestartForceExitStatus=SIGPIPE
RestartSec=30s
TimeoutStopSec=5m
EnvironmentFile=/etc/lifecycled
ExecStart=/usr/bin/lifecycled --cloudwatch-group=/aws/lifecycled --json

[Install]
WantedBy=multi-user.target

lifecycled_handler.sh

#!/bin/bash

set -u
set -x

HOSTNAME=$(curl -fsq http://169.254.169.254/latest/meta-data/hostname)
REGION=$(curl -fqs http://169.254.169.254/latest/dynamic/instance-identity/document | jq -r .region)
CLUSTER_NAME=$(cat /etc/eks/cluster_name)

# Setup kubeconfig
aws eks update-kubeconfig --region "${REGION}" --name "${CLUSTER_NAME}"

export KUBECONFIG="/root/.kube/config"

kubectl cordon "${HOSTNAME}"
kubectl drain "${HOSTNAME}" --ignore-daemonsets --grace-period=30 --force

sleep 10