How to diagnose Debian network problems with Golang logs

This article introduces how to use the Golang logging mechanism to efficiently diagnose network problems in Debian systems. We will explore several practical methods to help you quickly locate and resolve network connection failures.

1. Logging

• Standard library log package: Golang's log package is ideal for logging network requests and response details. Adding logs before and after sending a request can clearly track the sending and receiving process of the request. Here is a simple example:

 package main

import (
    "log"
    "net/http"
    "time"
)

func main() {
    client := &http.Client{
        Timeout: 5 * time.Second,
    }

    log.Println("Send request to example.com...")
    resp, err := client.Get("https://example.com")
    if err != nil {
        log.Printf("Error: %v", err)
        Return
    }
    defer resp.Body.Close()
    log.Println("Request successful, status code:", resp.Status)
}

2. Third-party tools

• GoAccess: GoAccess is a powerful open source network log analysis tool that is compatible with a variety of log formats (such as Apache, Nginx). It is developed based on C language, has real-time analysis capabilities, and can generate intuitive visual reports, which facilitates and quickly process and interprets log data.

3. Network function debugging

• Logging and Tracking: When developing distributed systems, function calls, return values ​​and error messages can be tracked by adding logging statements to network functions. In addition, the -tags go.net.trace flag enables the trace function to generate detailed trace data containing function calls, return values ​​and stack trace information to help pinpoint problems.

4. Network diagnostic tools

• netshoot: Although netshoot is mainly used for container network diagnosis, it is also suitable for Debian systems. After installing netshoot, you can access a range of powerful network diagnostic tools, such as tcpdump and netstat , to help you diagnose network problems.

5. Emergency response assistance tools

• LinuxCheck: LinuxCheck is a comprehensive Linux system detection tool, covering multiple aspects such as basic configuration, network traffic, task planning, environment variables, user information, etc. It can help you quickly identify and resolve network connectivity issues.

Through the flexible use of the above methods, you can effectively use the Golang logging mechanism to diagnose network problems in the Debian system and improve the stability and reliability of network connections.

The above is the detailed content of How to diagnose Debian network problems with Golang logs. For more information, please follow other related articles on the PHP Chinese website!