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Time processing is often encountered in the process of project development, but do you really use it right? Do you understand that static decoration SimpleDateFormat is disabled in Alibaba development manual By reading this article you will learn: Why do I need LocalDate, LocalTime, LocalDateTime [java8's new class] How to use java8's new ...

First of all, we need to install the docker environment. This is relatively simple. Take centos7 as an example. docker needs kernel version 3.10 + to install on centos7. You can check the kernel version number through uname-r. if the version does not match, please consult the data for replacement. When you are ready, use the following command t ...

In the previous section, we introduced the deployment of a complex docker process. A command option - e is involved. The purpose of this command is to pass environment variables. Next I'll show you how it works. First, create a container and set the environment variable VINCENT=vincent@qq.com docker run -d --name test1 -e VINCENT=vincent@qq.c ...

Environment preparation, the flash redis project in the previous section, starts the project: docker-compose up -d Starting flask-redis_web_1 ... done Starting flask-redis_redis_1 ... done View status: docker-compose ps Name Command State Ports ---------------------------------------- ...

Blog Outline:I. Introduction to ComposeII. Installation and use of ComposeIII. preparation of. yml document I. Introduction to Compose Compose is a tool for defining and running multi container Docker applications. With compose, you can use YAML files to configure your application's services. Then, with one command, you can create and start ...

1. Download the image of mysql5.6 from the docker hub docker pull mysql:5.6 2. Use mysql 5.6 image to run 4 mysql services, and distinguish by port number Preparatory work # Four directories are created on the local machine to store the data, logs and configuration files of four mysql services. mkdir /data/mysql cd /data/mysql mkdir mysq ...

Error when creating pod If the pod fails, the following two prompts will be displayed [root@master ~]#kubectl get pods NAME READY STATUS RESTARTS AGE net-test1-7c9c4b94d6-5mddl 1/1 Running 0 2m41s net-test1-7c9c4b94d6-xk8jp 0/1 ImagePullBackOff 0 5s [root@master ...

Mongodb series Mongodb practice 1: initial (including installation) Practice 2 of Mongodb: Practice 3 of Mongodb Practice 4 of Mongodb Practice 5 of Mongodb Practice 6 of Mongodb Practice 7 of Mongodb Practice 8 of Mongodb Preface Mongodb actually wanted to write a tutorial as early as a year ago. Because of the busy work, I didn't really use ...

This article introduces how to install dependency on Kepler cloud platform. What is Kplcloud? kplcloud is a lightweight PaaS platform based on Kubernetes. It manages the application through a visual interface, reduces the degree of application containerization, and reduces the time cost of application containerization. Kplcloud has been serving ...

Foundation of Docker Technology: Namespace, the basis of container isolation, to ensure that container A cannot see container B. 6 namespace: User,Mnt,Network,UTS,IPC,Pid cgroups, container resource statistics and isolation. cgroups: cpu,blkio,device,freezer,memory unionfs, typical: aufs/overlayfs, the foundation of layered image implementat ...