How to Install and Use Portainer for Docker on CentOS 7
This guide walks through installing Docker on CentOS 7, launching Portainer with a single Docker command, accessing its web UI on port 9000, setting an admin password, and using the interface to view and manage images and containers.
Prerequisite
Docker must be installed and configured on a CentOS 7 server. Installation steps are documented at
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/119028701.
Start Portainer
Run the following Docker command to launch Portainer as a detached container, map host port 9000 to container port 9000, mount the Docker socket for API access, enable automatic restart, and grant privileged mode:
docker run -d -p 9000:9000 --restart=always -v /var/run/docker.sock:/var/run/docker.sock --privileged=true portainer/portainerAccess the Web UI
Portainer’s UI listens on port 9000. Open http://<em>your-server-ip</em>:9000 in a browser. The first screen prompts for an admin password; after setting it, click “Connect” to attach to the local Docker engine.
UI navigation
The dashboard shows two main sections:
Images – lists all Docker images present on the host.
Containers – lists running and stopped containers.
From these tabs you can inspect, start, stop, and remove images or containers directly.
After setting the password, the UI prompts to connect to the local Docker daemon; clicking “Connect” establishes the link and displays the management console.
Within the console, the Images tab shows all images and the Containers tab shows all containers, as illustrated in the following screenshots.
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