Automated Interface Monitoring Script with Cron and Enterprise WeChat Bot

The author describes deploying an automatic interface health‑check script on a production server that periodically probes multiple HTTP endpoints and reports abnormal status via an Enterprise WeChat robot.

First, create a working directory and log file:

# mkdir -p /opt/interface-check
# cd /opt/interface-check/
# touch interface.log

Then write the Bash script jkdz-check.sh:

#!/bin/bash
#1、Beijing interface address
http_beijing_addr=YOUR_BEIJING_ENDPOINT
#2、XXX enterprise interface address
http_xxxqiye_addr=YOUR_XXX_ENDPOINT
# Enterprise WeChat robot webhook (replace with your actual URL)
WEBHOOK_URL=YOUR_WEBHOOK_URL

while :
do
    date=$(date +%Y-%m-%d-%H:%M:%S)

    # Check Beijing endpoint
    beijing_status_code=`curl -m 20 -s -o /dev/null -w %{http_code} $http_beijing_addr`
    if [ "$beijing_status_code" -ne 200 ]; then
        curl --location --request POST ${WEBHOOK_URL} \
            --header 'Content-Type: application/json' \
            -d '{"msgtype": "text","text": {"content": "'$date' 北京-接口连接异常"}}'
        echo "$date 北京-接口连接异常" >>/opt/interface-check/interface.log
    else
        echo "$date 北京-接口连接正常" >>/opt/interface-check/interface.log
    fi

    # Check XXX enterprise endpoint
    xxxqiye_status_code=`curl -m 20 -s -o /dev/null -w %{http_code} $http_xxxqiye_addr`
    if [ "$xxxqiye_status_code" -ne 200 ]; then
        curl --location --request POST ${WEBHOOK_URL} \
            --header 'Content-Type: application/json' \
            -d '{"msgtype": "text","text": {"content": "'$date' xxx企业-接口连接异常"}}'
        echo "$date xxx企业-接口连接异常" >>/opt/interface-check/interface.log
    else
        echo "$date xxx企业-接口连接正常" >>/opt/interface-check/interface.log
    fi
    exit
done

The script logs timestamps and status messages to /opt/interface-check/interface.log and sends a JSON payload to the WeChat robot whenever a check fails.

To configure the robot, add it to a WeChat group, obtain its webhook URL from the robot details page, and use a simple curl command to test message delivery:

curl 'YOUR_WEBHOOK_URL' \
   -H 'Content-Type: application/json' \
   -d '{
        "msgtype": "text",
        "text": {"content": "hello world"}
   }'

After verifying the script syntax (e.g., with bash -n jkdz-check.sh), run it in the background using nohup:

# nohup bash /opt/interface-check/jkdz-check.sh &
# more nohup.out

Finally, schedule the script to run every two hours with a crontab entry:

crontab -e
0 */2 * * * sh /opt/interface-check/jkdz-check.sh

The WeChat group receives alert messages when an endpoint is unreachable, and the log file shows timestamped records of both successful and failed checks.