Introduction: In this article, we will explore two topics: transferring a Docker volume to another host and installing PNPM on Ubuntu 22.04. These subjects are crucial for developers and system administrators seeking efficient ways to manage their applications and dependencies. To illustrate the processes, we will use one of the dedicated servers from our carefully curated list of the best servers available.
Transferring a Docker Volume to Another Host
Transferring a Docker volume between hosts can be essential when migrating applications or sharing data across different environments. Here’s a step-by-step guide to accomplishing this:
- Stop the Docker container: Begin by stopping the Docker container that is currently using the volume you want to transfer. You can use the command docker stop <container_name> to achieve this.
- Create a backup of the volume: It is crucial to create a backup of the volume before transferring it. You can do this by using the docker run command with the -v flag to mount the volume and then copy its contents to a separate directory. For example:
docker run -v <volume_name>:/data -v <local_backup_directory>:/backup busybox cp -R /data /backup
- Transfer the backup to the new host: Once you have created a backup of the Docker volume, transfer it to the new host using your preferred method, such as SCP or rsync. Ensure that the backup directory and its contents are preserved during the transfer process.
- Restore the volume on the new host: On the new host, start by creating a new Docker volume using the docker volume create command. Then, use the docker run command again to mount the new volume and copy the contents of the backup into it. For example:
docker volume create <new_volume_name>
docker run -v <new_volume_name>:/data -v <local_backup_directory>:/backup busybox cp -R /backup /data
- Start the container on the new host: Finally, start the Docker container on the new host, making sure to mount the newly restored volume using the -v flag in the docker run command. Verify that the application is functioning correctly with the transferred volume.
Installing PNPM on Ubuntu 22.04
PNPM is a package manager for JavaScript that offers faster installation and better disk space utilization compared to other popular package managers like npm or Yarn. Here’s how you can install PNPM on Ubuntu 22.04:
- Update package repositories: Before installing PNPM, ensure that your system’s package repositories are up to date. Run the following command:
sudo apt update
- Install Node.js and npm: PNPM requires Node.js and npm to be installed on your system. Use the following command to install them:
sudo apt install nodejs npm
- Install PNPM globally: Once Node.js and npm are installed, you can install PNPM globally using the npm package manager. Run the following command:
sudo npm install -g pnpm
- Verify the installation: To verify that PNPM is successfully installed, run the following command:
pnpm –version
- If the installation was successful, you should see the version number of PNPM printed on the console.
In this article, we covered two important topics for developers and system administrators. We learned how to transfer a Docker volume to another host, allowing seamless migration and sharing of data between environments. Additionally, we explored the installation process of PNPM, a package manager that offers faster installation and efficient disk space utilization. By implementing these techniques on one of the dedicated servers from our list of the best servers, you can enhance your development workflow and optimize resource management.
