Bash Script Monitoring Certificate Kubernetes Cluster (Telegram Alert)

 

#!/bin/bash   HOST=$(hostname)   # ID Telegram TOKEN=telegram_token CHAT_ID=telegram_chatId   # Cek Sertifikat SSL Kubernetes cert_info=$(kubeadm certs check-expiration) expires_date=$(echo "$cert_info" | awk 'NR>6 {print $2, $3, $4, $5; exit}') days_remaining=$(echo "$cert_info" | awk 'NR>6 {print $7; exit}')   # Hapus "d" dari variable days_remaining menjadi full integer days_remaining="${days_remaining%d}"   # Mengecek apakah sisa hari kurang dari 90 if [ "$days_remaining" -lt 90 ]; then   # Tampilkan Sertifikat SSL Kubernetes   echo "Cluster    : $HOST" > /opt/scripts/ssl_kuber.log   echo "Expire on : $expires_date" >> /opt/scripts/ssl_kuber.log   echo "Counting  : $days_remaining days" >> /opt/scripts/ssl_kuber.log     # Kirim Notifikasi   MESSAGE="$(cat /opt/scriptss/ssl_kuber.log)"   URL="https://api.telegram.org/bot$TOKEN/sendMessage"   curl -s -X POST $URL -d chat_id=$CHAT_ID -d text="$(echo -e '\U0001f525 \U0001f514 \nNP2.1 Kubernetes SSLn\n')$(echo -e '\n-----------------------------------\n')$(echo -e '\n'"$MESSAGE") " else   echo "check-expiration: OK: $days_remaining days" fi   sleep 3 rm -f /opt/scripts/ssl_kuber.log