


How to get metadata of VPC type instances in Linux and Windows
The content of this article is about how to obtain the metadata of private network VPC type instances in Linux and Windows. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you. help.
Instance metadata
Instance metadata refers to some basic information about your ECS instance in the Alibaba Cloud system, including instance ID, IP address, operating system, etc. You can use these metadata to manage or configure ECS instances.
Note
If you manually change some instance information, this change will not be reflected in the instance metadata.
Usage restrictions
Only supports obtaining metadata of VPC type instances.
Getting method
Linux instance
Use username and password authentication to connect to the Linux instance.
Execute the command
curl http://100.100.100.200/latest/meta-data/
to access the root directory of metadata.
Add the specific metadata name in the URL to obtain the specific metadata. For example:
Execute the command
curl http://100.100.100.200/latest/meta-data/instance-id
to obtain the instance ID.
Execute the command
curl http://100.100.100.200/latest/meta-data/image-id
to obtain the image ID used when creating the instance.
Windows instance
Use software to connect to Windows instance.
Use PowerShell to execute the command
Invoke-RestMethod http://100.100.100.200/latest/meta-data/
to obtain metadata information.
Add the specific metadata name in the URL to obtain the specific metadata, for example:
Execute the command
Invoke-RestMethod http://100.100.100.200/latest/meta-data/instance-id
to obtain the instance ID.
Execute the command
Invoke-RestMethod http://100.100.100.200/latest/meta-data/image-id
to obtain the image ID used when creating the instance.
Instance metadata list
##
The above is the detailed content of How to get metadata of VPC type instances in Linux and Windows. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



Steps to start Nginx in Linux: Check whether Nginx is installed. Use systemctl start nginx to start the Nginx service. Use systemctl enable nginx to enable automatic startup of Nginx at system startup. Use systemctl status nginx to verify that the startup is successful. Visit http://localhost in a web browser to view the default welcome page.

How to confirm whether Nginx is started: 1. Use the command line: systemctl status nginx (Linux/Unix), netstat -ano | findstr 80 (Windows); 2. Check whether port 80 is open; 3. Check the Nginx startup message in the system log; 4. Use third-party tools, such as Nagios, Zabbix, and Icinga.

Starting an Nginx server requires different steps according to different operating systems: Linux/Unix system: Install the Nginx package (for example, using apt-get or yum). Use systemctl to start an Nginx service (for example, sudo systemctl start nginx). Windows system: Download and install Windows binary files. Start Nginx using the nginx.exe executable (for example, nginx.exe -c conf\nginx.conf). No matter which operating system you use, you can access the server IP

Answer to the question: 304 Not Modified error indicates that the browser has cached the latest resource version of the client request. Solution: 1. Clear the browser cache; 2. Disable the browser cache; 3. Configure Nginx to allow client cache; 4. Check file permissions; 5. Check file hash; 6. Disable CDN or reverse proxy cache; 7. Restart Nginx.

In Linux, use the following command to check whether Nginx is started: systemctl status nginx judges based on the command output: If "Active: active (running)" is displayed, Nginx is started. If "Active: inactive (dead)" is displayed, Nginx is stopped.

The server does not have permission to access the requested resource, resulting in a nginx 403 error. Solutions include: Check file permissions. Check the .htaccess configuration. Check nginx configuration. Configure SELinux permissions. Check the firewall rules. Troubleshoot other causes such as browser problems, server failures, or other possible errors.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

CentOS will be shut down in 2024 because its upstream distribution, RHEL 8, has been shut down. This shutdown will affect the CentOS 8 system, preventing it from continuing to receive updates. Users should plan for migration, and recommended options include CentOS Stream, AlmaLinux, and Rocky Linux to keep the system safe and stable.
