Deploy and Use a Lightweight Redis Monitor for Real‑Time Metrics

Overview

Redis Monitor is a lightweight web‑based visualization tool that collects key Redis metrics—connection count, QPS, memory usage, and replication lag—by parsing the output of redis-cli info. It works with Redis 6.2+ in single‑instance, Sentinel, and cluster deployments.

Features

Supports single‑instance, Sentinel, and cluster modes.

Auto‑discovers master/slave IPs after a single host entry.

Remote data collection requires no agent on the Redis server.

Built‑in email and WeChat alerting.

Environment Setup (CentOS 7)

yum install -y php-pear php-devel php httpd mysql php-mysqlnd php-redis

systemctl restart httpd.service

redis-cli config set requirepass yourPassword

Installation

git clone https://github.com/hcymysql/redis_monitor.git /var/www/html/redis_monitor

chmod 755 ./mail/sendEmail

chmod 755 ./weixin/wechat.py

Database Schema

mysql -uroot -p123456 < redis_monitor_schema.sql

Optionally change the mysql_status_history table engine to RocksDB for compression and I/O efficiency.

Register Monitored Host

INSERT INTO redis_status_info (id,host,tag,pwd,port,monitor,send_mail,send_mail_to_list,send_weixin,send_weixin_to_list,threshold_alarm_threads_running,threshold_warning_used_memory)
VALUES (1,'192.168.176.27','RedisTest','hechunyang123456',6379,1,1,'[email protected]',1,'hechunyang',150,'200M');

Host Table Fields

host : IP address of the Redis instance.

tag : Business name or identifier.

pwd : Password for the Redis instance.

port : Redis port number.

monitor : 1 to enable monitoring, 0 to disable.

send_mail : 1 to enable email alerts, 0 to disable.

send_mail_to_list : Comma‑separated list of email recipients.

send_weixin : 1 to enable WeChat alerts, 0 to disable.

send_weixin_to_list : WeChat recipient identifier.

threshold_alarm_threads_running : Connection count threshold (integer).

threshold_warning_used_memory : Memory usage threshold (e.g., 200M).

Connection Configuration

$con = mysqli_connect("127.0.0.1","admin","hechunyang","redis_monitor","3306") or die("Database connection error" . mysqli_error());

Email Alert Settings

system("./mail/sendEmail -f [email protected] -t '{$this->send_mail_to_list}' -s smtp.139.com:25 -u '{$this->alarm_subject}' -o message-charset=utf8 -o message-content-type=html -m 'Alert: {$this->alarm_info}' -xu [email protected] -xp 123456 -o tls=no");

WeChat Alert Settings

Configure the enterprise WeChat account according to the README at https://github.com/X-Mars/Zabbix-Alert-WeChat/blob/master/README.md

Cron Job

* * * * * /usr/bin/php /var/www/html/redis_monitor/check_redis_status.php > /dev/null 2>&1

Page Auto‑Refresh

Adjust the meta refresh interval in redis_status_monitor.php (default 600 seconds):

<meta http-equiv="refresh" content="600">

Access URL

Open the monitor in a browser: http:// yourIP /redis_monitor/redis_status_monitor.php