docker-compose mysql exporter-CFANZ编程社区

Docker-Compose MySQL Exporter

Introduction

In this article, we will explore how to use Docker Compose to set up a MySQL Exporter. MySQL Exporter is a Prometheus exporter that collects and exposes MySQL metrics for monitoring and alerting purposes. Docker Compose is a tool for defining and running multi-container Docker applications. By utilizing Docker Compose, we can easily deploy and manage the MySQL Exporter along with the required dependencies.

Prerequisites

Before proceeding, make sure you have Docker and Docker Compose installed on your system. You can download and install them from the official Docker website.

Setting Up the Docker Compose File

Create a new directory for your project and navigate to it in the terminal. Create a file named docker-compose.yml and open it in a text editor.

version: '3'
services:
  mysql:
    image: mysql:latest
    environment:
      MYSQL_ROOT_PASSWORD: examplepassword
    ports:
      - 3306:3306
  mysql-exporter:
    image: prom/mysqld-exporter:latest
    environment:
      DATA_SOURCE_NAME: "root:examplepassword@(mysql:3306)/"
    ports:
      - 9104:9104
    depends_on:
      - mysql

In the above Docker Compose file, we define two services: mysql and mysql-exporter. The mysql service uses the official MySQL image and sets the root password using the MYSQL_ROOT_PASSWORD environment variable. We also expose port 3306 to access MySQL externally.

The mysql-exporter service uses the prom/mysqld-exporter image, which is a pre-built Docker image for MySQL Exporter. We set the DATA_SOURCE_NAME environment variable to connect to the MySQL database running in the mysql service. Port 9104 is exposed to access the MySQL Exporter metrics.

Starting the Services

Save the docker-compose.yml file and run the following command in the terminal to start the services:

$ docker-compose up -d

Docker Compose will download the required images and start the containers in the background. You can verify if the services are running using the following command:

$ docker-compose ps

Accessing the MySQL Exporter Metrics

Once the services are up and running, you can access the metrics provided by MySQL Exporter by visiting http://localhost:9104/metrics in your web browser. This page will display various metrics related to your MySQL database, such as number of slow queries, database locks, and more.

Conclusion

In this article, we learned how to use Docker Compose to set up a MySQL Exporter for monitoring MySQL metrics. Docker Compose makes it easy to define and deploy multi-container applications. By utilizing the MySQL Exporter and Docker Compose, you can effectively monitor and analyze the performance of your MySQL database.

Remember to stop the services when you're done: