PXB needs to have access to the local file system in order to perform hot backups. For example, the MySQL image created by the Docker team may not contain things that we need, e.g., Percona Xtrabackup (PXB). There are tons of MySQL container images available on Docker Hub that we can re-use and enhance with more functionality. However, this is perhaps not best practice. Status: Downloaded newer image for docker.io/debian:latest Trying to pull repository docker.io/library/debian. You can pull an image which contains a vanilla operating system of your choice, and start building the MySQL image from scratch: $ docker pull debian To build a MySQL container image, we’ll start by pulling a base image. We will then publish our image to Docker Hub and setup an automated build. Take note that in this exercise, we are going to extend an existing MySQL image by adding Percona Xtrabackup onto it. $ docker run -d -name=mysql2 -e MYSQL_ROOT_PASSWORD=’mypassword’ -v /storage/mysql2/mysql-datadir:/var/lib/mysql mysql Spin up two MySQL containers and map them with their respective volume: $ docker run -d -name=mysql1 -e MYSQL_ROOT_PASSWORD=’mypassword’ -v /storage/mysql1/mysql-datadir:/var/lib/mysql mysql The image is pulled from Docker Hub on the machine host by using: $ docker pull mysql The above illustrates the following actions: Building a MySQL container image requires process flow, since Docker expects only one process per container. 99% of the time, the MySQL service running in container will usually work in any kind of environment as long as you have the Docker engine running. Run the MySQL container based on the image, which is similar to starting the MySQL serviceĪs you can see, the Docker approach contains less deployment steps to get MySQL up and running.Download a MySQL image from public (Docker Hub) or private repository, or build your own MySQL image.Install Docker engine on the physical host.Running a MySQL Docker image would look like this: Modify the MySQL configuration to suit your needs.Install MySQL packages via package repository.Install operating system of your choice.When running MySQL on a physical host, here is what you would normally do: That includes operating system, software packages, drivers, configuration files and helper scripts packed in one bundle. It has all the required stuff to run the container. A container image is like a virtual machine template. What is a container image?Ī container requires an image to run. In this blog post, we’ll show you how to build your own MySQL image for Docker. For that purpose, we used the MySQL image from the official Docker repository. In our previous post, we covered the basics of running MySQL as container. The image can then be used to quickly start running MySQL containers, which can be operated individually. Building a docker image for MySQL is essential if you’d like to customize MySQL to suit your needs.
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