Ir al contenido principal

How to execute a command in running Docker container

Sometimes you need to run a particular command on a running container perhaps to check where some files are located or to see their contents, in this quick tips episode, you will learn how. Above is the vid and below you will find some useful notes.
  1. 1.

    Pre-reqs

    • Have Docker installed
  2. 2.

    Start a Docker container

    • For this video I will be using a Jenkins image as an example, so let’s first download it by using docker pull 
      docker pull jenkins/jenkins:lts
    • Then I will use one of the suggested ways to run the instance and do it in the background. If you don't use pull first this command will work given that it will also try to download the image if it's not found locally. 
      docker run -d -p 8080:8080 -p 50000:50000 jenkins/jenkins:lts
    • You can check what's the container id, you can just type docker ps for this 
      docker ps
    • You can execute a command in a running container with the following: 
      docker exec -ti CONTAINER_ID COMAND_TO_RUN
      To run bash and do stuff inside the container: 
      docker exec -ti CONTAINER_ID  /bin/bash
      To print the contents of a file, like the one with the initial password for the jenkins image (/var/jenkins_home/secrets/initialAdminPassword): 
      docker exec -ti CONTAINER_ID  cat /var/jenkins_home/secrets/initialAdminPassword
      To list files and folders: 
      docker exec -ti CONTAINER_ID  ls
  3. 3.

    Resources

Etiquetas:

Comentarios

Publicar un comentario

Entradas populares de este blog

Create a custom AEM workflow process step with a dialog

In this tutorial I talk about how to create a custom workflow step process with an additional dialog for configuring it, above is the vid and below you will find some useful notes. 1. Pre-reqs Have access to an Adobe Experience Manager instance. Have Maven installed, understand how it works and also understand how to use Adobe's archetype, you can watch my video about maven here: Creating an AEM application using Maven and Adobe's archetype 2. What is an AEM Workflow and workflow model Workflows allow you to automate different tasks inside AEM by defining a s
Publicar un comentario
Leer más

How to create an AEM component using Reactjs

In this tutorial, I will show how to use use Adobe's archetype to create an AEM application with React.js support and also how to add a new React.js component so that it can be added into a page, above is the vid and below you will find some useful notes. In the second part we will see how to configure the Sling Model for the AEM React component. 1. Pre-reqs Have access to an Adobe Experience Manager instance. You will need aem 6.4 Service Pack 2 or newer. Have Maven installed, understand how it works and also understand how to use Adobe's archetype, you can watch my video about maven here: Creating an AEM application using Maven and Adobe's archetype 2.
4 comentarios
Leer más

Creating Docker containers for Adobe Experience Manager

This is a Docker tutorial for creating a docker image for the Galen framework, above is the vid and below you will find some of the steps followed. Adobe experience manager is a content management system which in a nutshell is an application that allows us to create web sites to be consumed by end users. You might be familiar with other such applications like wordpress or drupal which serves the same purpose A typical deployment would be comprised of two AEM instances, the author instance used for creating and modifying content, the publish instance which serves the content and finally we have a dispatcher which is a static web server used for caching, load balancing and some security purposes. We can configure an AEM instance to work as an author or publish instance by either changing the file name
Publicar un comentario
Leer más