How to solve the problem that Qunhui docker cannot be downloaded?

Recently, more and more Qunhui users choose to use Docker to manage their applications. However, when you use Docker in your Qunhui, you may encounter some problems, such as being unable to download the Docker image. etc. In this article, we will address how to get your Qunhui Docker running properly.

1. Check whether docker is installed

First of all, you should confirm whether Docker in your Qunhui has been installed correctly. If your Qunhui Docker is not installed correctly, it will cause your Docker to not run properly. You can check if Docker is installed by opening an SSH connector and entering the following command:

docker version

If you see this question, it means that your Docker is installed:

Client:
 Version:      18.06.1-ce
 API version:  1.38
 ...

Server:
 Engine:
  Version:      18.06.1-ce
  API version:  1.38 (minimum version 1.12)
  ...

However, if you If you find that Docker is not running, you can run the following command to start Docker:

sudo service docker start

2. Check whether the image is available

If you have confirmed that your Docker has been installed normally, but you still cannot download Docker Mirror, then you need to check whether there is a wrong warehouse address. Generally speaking, Docker uses Docker Hub as the repository address of the image by default. However, network problems may occur and make it impossible to connect to Docker Hub. You can use the following command to check whether your warehouse address is configured correctly:

docker info

If you see the following output, it means that your warehouse address is normal:

...
 Registry: https://index.docker.io/v1/
 ...

But if you see The output shows Registry: https://---.dq.koolyun.com/v1/, then you need to add it to the /etc/docker/daemon.json file and replace multiple "-" with your host name Or IP:

{
 "registry-mirrors": ["https://****.dq.koolyun.com"]
}

After adding, you need to reload the configuration file:

sudo systemctl daemon-reload

and restart docker:

sudo systemctl restart docker

3. Check whether the network is accessible

Finally, you need to check whether your network can be accessed normally. If your network is not resolved, you cannot download the Docker image. You can use the ping command to check whether the network is accessible:

ping www.baidu.com

If you cannot ping, there is a network problem. You can try restarting the router or contact your network service provider to resolve this issue.

To sum up, here are three ways to check the problem that Qunhui Docker cannot be downloaded. I hope it will help you solve the problem of Qunhui Docker not being able to download.

The above is the detailed content of How to solve the problem that Qunhui docker cannot be downloaded?. For more information, please follow other related articles on the PHP Chinese website!