Simple script to monitore web services using native linux tools: bash, curl & cron, plus Telegram to deliver alerts.

• find @botfather in telegram and follow instructions
• get api key for you bot from @botfather and put it into file: telegram-api.key

• recipient should find your bot in telegram and /start it
• then you can run ./recipients-setup.sh and follow instructions

• for each service create in folder "services" .ini file with 5 keys:
• MSMS_SERVICE_NAME - human-readable name for service
• MSMS_SERVICE_ENDPOINT - your service endpoint to check with curl
• MSMS_CURL_PARAMS - parameters for curl, see example below
• MSMS_EXPECTED or MSMS_EXPECTED_FILE - expected service response. Use MSMS_EXPECTED_FILE for long responses.
• MSMS_RECIPIENTS - file with recipients chat ids
• example:

MSMS_SERVICE_NAME='my service'
MSMS_SERVICE_ENDPOINT='http:https://0.0.0.0'
MSMS_CURL_PARAMS='-s -X POST -H "Content-Type: application/json" --connect-timeout 3 -m 7 -d @request.json'
MSMS_EXPECTED='{"ok","true"}'
# MSMS_EXPECTED_FILE='my-service-response.json'
MSMS_RECIPIENTS='my-service-recipients.txt'

• run: sudo crontab -e
• to check service every minute and send alert if service unavailable or response unexpectedly, add line:

*/1 * * * * /drclinics/bot/monitoring/monitoring.sh >> /drclinics/bot/monitoring/monitoring.log 2>&1

• to enable alert every day at 11:00AM as confirmation that monitoring itself is alive, add line:

0 11 * * * /drclinics/bot/monitoring.sh DAILY >> /drclinics/telemed/logs/monitoring.log 2>&1

• run: sudo service cron reload