=====Telegram Notify=====
<code>notify_telegram.sh -123456789 "Title" "Message"</code>
<code bash notify_telegram.sh>
TELEGRAM_TOKEN="12345:ABCDEFGH"
CHAT_ID="$1"
TITLE="$2"
MESSAGE="$3"

curl -X POST -H "Content-Type: application/json" -d "{\"chat_id\":\"${CHAT_ID}\",\"title\":\"${TITLE}\",\"text\":\"${MESSAGE}\"}" "https://api.telegram.org/bot${TELEGRAM_TOKEN}/sendMessage"
</code>
=====Domain Expiration=====
<code>check_domain.sh example.com</code>
<code bash check_domain.sh>
#!/bin/bash

which whois >/dev/null || { echo "whois - not installed"; exit 1; }
[ -z "${1}" ] && { echo "domain - not spicified"; exit 1; }
now=$(date '+%s')
expiration_date=$(date -d "$(whois "${1}" | grep 'Registry Expiry Date'|awk -F ': ' '{print $2}')" '+%s')
echo $(( ( expiration_date - now )/(60*60*24) ))
</code>

=====Certificate Expiration=====
<code>check_certificate.sh example.com</code>
<code bash check_certificate.sh>
#!/bin/bash

[ -z "${1}" ] && { echo "domain - not spicified"; exit 1; }
now=$(date '+%s')
expiration_date=$(date -d "$(openssl s_client -connect ${1}:443 < /dev/null 2>/dev/null| openssl x509 -noout -dates|grep 'notAfter'|awk -F '=' '{print $2}')" '+%s')
echo $(( ( expiration_date - now )/(60*60*24) ))
</code>

=====WebSocket Check=====
<code>check_ws.py wss://example.com:8080/public/</code>
<code python check_ws.py>
#!/usr/bin/python3

import sys
from websocket import create_connection

host = sys.argv[1]

try:
    ws = create_connection(host)
    ws.close()
    connectionState = 1
except Exception:
    connectionState = 0
print(connectionState)
</code>
=====Slack Notification=====
<code bash notify_slack.sh>
#!/bin/bash

url='https://hooks.slack.com/services/xxxxxxxx/xxxxxxx/xxxxxxxxxxxx'
username='Zabbix'

to="$1"
subject="$2"
message="$3"

recoversub='^RECOVER(Y|ED)?$|^OK$|^Resolved.*'
problemsub='^PROBLEM.*|^Problem.*'

if [[ "$subject" =~ $recoversub ]]; then
    emoji=':white_check_mark:'
    color='#00ff40'
elif [[ "$subject" =~ $problemsub ]]; then
    emoji=':exclamation:'
    color='#ff0a0a'
else
    emoji=':question:'
    color='#0ac2ff'
fi

payload="payload={\"channel\": \"${to}\", \"username\": \"${username}\", \"attachments\": [{\"fallback\": \"${subject}\", \"title\": \"${subject}\", \"text\": \"${message}\", \"color\": \"${color}\"}], \"icon_emoji\": \"${emoji}\"}"

return=$(curl -s -m 5 --data-urlencode "${payload}" "$url")

if [[ "$return" != 'ok' ]]; then
    >&2 echo "$return"
    exit 1
fi
</code>
==Message Templates==
<code>
Problem:  {EVENT.NAME} Host: {HOST.NAME}\nTime: {EVENT.TIME} on {EVENT.DATE}\n{EVENT.OPDATA}
Resolved: {EVENT.NAME} Host: {HOST.NAME}\nDuration: {EVENT.DURATION}\n{EVENT.OPDATA}
</code>