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HomeOperation and MaintenanceDockerIs linux docker started?
Is linux docker started?Apr 18, 2023 am 09:05 AM

The use of Docker container technology in Linux can accelerate the deployment of applications and improve the stability and security of the system. However, when using Docker containers, we need to pay attention to whether the container is started, otherwise the application will not run.

Docker startup

Starting Docker in Linux requires the use of the systemd service. systemd is a Linux system manager and initialization system. It was developed to better manage and control Linux systems, providing administrators with better ways to control and access the system.

When starting Docker, you need to use the following command:

systemctl start docker

This command will start the Docker service and run the corresponding Docker container. If you want to automatically start the Docker service when the system starts, you can use the following command:

systemctl enable docker

This command will enable Docker's self-starting function.

How to detect whether the Docker container is started

Once the Docker service is started, we need to detect whether the Docker container is started. We can use the following command to detect whether the Docker container is running:

docker ps

This command can display the list of running Docker containers. If no Docker containers are displayed, it means the Docker containers are not started.

If you want to check if a single Docker container is running, you can use the following command:

docker inspect <container_name></container_name>

This command will display detailed information about the status of a specific Docker container. It will show the status of the container, including running or not started.

You can also check the status of Docker containers using the following command:

docker container ls -a

This command will display the status of all Docker containers, including whether they are running.

How to restart a Docker container

When we need to restart a Docker container, we can use the following command:

docker restart <container_id></container_id>

This command will restart a specific Docker container. First, you need to find the ID of the Docker container using the following command:

docker ps -a

This command will display a complete list of all running and stopped Docker containers. Once started, we can restart the stopped Docker container.

Summary

Using Docker container technology in the Linux operating system can increase the deployment speed of applications and improve the stability and security of the system. However, when using Docker containers, you need to pay attention to whether the container is started, otherwise the application will not run. Using the systemd service to start the Docker container can automatically run the Docker container. Detecting the status of the Docker container and restarting the Docker container can also be achieved through specific commands. Mastering these skills can make using Docker containers more convenient and efficient.

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