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Operation and Maintenance

Docker

Two characteristics of docker images

Two characteristics of docker images: 1. The image is layered. An image can be composed of multiple intermediate layers, and multiple images can share the same intermediate layer; 2. The image is read-only. After the image is built, it will no longer be available. Can be modified.

Jun 16, 2020 pm 05:45 PM

docker 镜像

Docker deploys two basic images of go

Docker deploys two basic images of Go: 1. golang:latest image, packaging image command [docker build -t gotest.]; 2. alpine:latest image, packaging image command [docker build -t common.].

Jun 15, 2020 pm 05:50 PM

docker go 镜像

Build the first Dockerfile

docker: This article introduces you to the method of building the first Dockerfile file. It has certain reference value and I hope it can help you. Method to create an empty Dockerfile: [mkdir dockerfile_test].

Jun 13, 2020 pm 05:47 PM

Dockerfile

How to install nginx under docker

The method to install nginx under docker is: 1. Execute the [docker pull nginx] command to pull the latest nginx image; 2. Create the /srv/web directory; 3. Create a container; 4. Deploy; 5. Test.

Jun 12, 2020 pm 06:20 PM

docker nginx

What is the difference between Docker and Azure?

The difference between Docker and Azure: Azure is a cloud computing-based operating system whose main goal is to provide a platform for developers, while Docker is an open source application container engine that allows developers to package applications into a portable image. , and then publish to any popular platform.

Jun 12, 2020 pm 05:35 PM

docker

Is there Docker for Windows?

Windows does not have Docker, but Docker can be installed, and Docker has already launched the Docker for Windows toolkit, which provides a complete tool chain for developers to develop Docker-oriented applications on Windows.

Jun 12, 2020 pm 04:08 PM

docker

How to check the error report in docker?

How to check the error report in docker: 1. Log in to the docker host to analyze the problem and start the [iframe-test] machine; 2. When the docker container starts a fault prompt, enter the code [[root@server opt]# cd]; 3. Execute [free - mh] command to view memory.

Jun 12, 2020 pm 03:56 PM

报错

How to configure the memory size for docker?

Methods to solve the problem of docker configuration memory size: 1. Mount the configuration file in docker and configure the jvm memory size through catalina.sh; 2. Directly modify the configuration method of catalina.sh of the tomcat container, enter the container to find the configuration file and add the configuration That’s it.

Jun 12, 2020 pm 03:25 PM

配置内存

What should I do if docker cannot connect to broadband?

The solution to the problem that docker cannot connect to broadband: First edit the configuration file, the code is [vim /etc/sysctl.conf]; then add the code to the file, the code is [net.bridge.bridge-nf-call-ip6tables=1]; Finally, restart the network.

Jun 12, 2020 pm 03:05 PM

docker 宽带

What should I do if the docker folder mapping fails?

Methods to solve the problem of unsuccessful docker folder mapping: 1. Host volume mapping method, the code is [[root@docker1 ~]# c/var/data/]; 2. Use shared storage mapping method to map a host Create a folder for the nfs host and share it with the two docker hosts.

Jun 12, 2020 pm 02:50 PM

文件夹映射

How to debug docker debug with pycharm?

How to debug docker debugging with pycharm: first install DockerToolbox; then start Docker and initialize Image; then create a connection from Pycharm to Docker; and finally debug the Debug project through port mapping.

Jun 12, 2020 pm 02:34 PM

pycharm docker debug

What should I do if docker cannot connect to the web page?

Solution to the problem that docker cannot connect to the web page: 1. Use the [--net:host] option; 2. Use the [--dns] option; 3. Modify the dns server; 4. No need for dnsmasq; 5. Rebuild the docker0 network; 6. Modify [/etc/hosts] directly within docker.

Jun 12, 2020 pm 02:08 PM

docker 网页

Where is the image stored after docker pull pulls it?

After docker pulls the image, it is stored in the image directory. The search method is: first enter the Docker environment and find the [overlay2] directory under the [images] directory; then find the [repositories.json] file in the directory to obtain the details of the image. information.

Jun 12, 2020 pm 01:49 PM

docker pull 镜像

What should I do if there is not enough space in docker?

Methods to solve insufficient docker space: 1. Check the space size of the docker image storage directory; 2. Stop the docker service; 3. Create a new docker directory; 4. Migrate files to the newly created directory; 5. Reload and restart the docker service; 6. Delete the old docker directory.

Jun 12, 2020 pm 01:19 PM

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