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Note: when writing docker-compose.yml file, a space should be added after all colons (:) and dashes (-). 1,command Overrides the default command executed after the container is started command: echo "hello" 2,container_name Specifies the container name. The project name will be used by default_ Service name_ Format such as serial number c ...

Running microservices on Docker Using Dockerfile to build Docker image Dockerfile builds Docker images. Dockerfile is a text file that contains several instructions that describe the details of building an image. 1) Prepare a file named Dockerfile: FORM nginx RUN echo '<h1>test</h1>' > /usr/share/nginx/html/index.html FORM a ...

Docker introduction What is Docker? When people say "Docker", they usually refer to Docker Engine, which is a client server application, which is controlled by Docker A daemon, a REST API that specifies the interface to interact with the daemon, and a command line interface (CLI) to communicate with the daemon (by encapsulating ...

Horizontal Pod Autoscaler (HPA) can automatically scale the number of pods in ReplicationController, Deployment, ReplicaSet and StatefulSet based on CPU utilization. In addition to CPU utilization, automatic scaling can also be performed based on custom metrics provided by other applications. Pod auto scaling is not applicable to objects that c ...

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stack container concept Stack (stack) is a first in and last out data structureOnly the top elements in the stack can be used by the outside world, so the stack is not allowed to traverse Common interface 1. Constructor stack<T> st; // Stack is implemented by template class, with default constructorstack<T> st1(const stack ...

introduction I believe everyone has been exposed to containers when learning JavaSE. Generally, containers in Java can be divided into four categories: Map, List, Queue and Set containers. In the process of use, such containers as ArrayList and HashMap are often used, but the problem is that these containers will have thread safety problems in ...

1, Data volume type 1 emptyDir emptyDir: simple empty directory Data is not stored permanently, but can only be stored temporarily. It is often used to exchange and share data between multiple Docker containers in a pod Create a pod containing two containers that share the same volume cat <<EOF > fortune-pod.yml apiVersion: v1 kin ...

Docker Install Docker Uninstall old version sudo apt-get remove docker docker-engine docker.io containerd runc Installing using a repository Before installing Docker engine community on the new host for the first time, you need to set up the Docker repository. After that, you can install and update Docker from the repository. Set up repo ...

1, Introduction 1. Prometheus (Chinese Name: Prometheus) It is an open source monitoring and alarm system and time series database (TSDB) developed by SoundCloud. Prometheus is developed in Go language and is an open source version of Google BorgMon monitoring system. The basic principle of Prometheus is to periodically capture the status of ...