In our last blog, we discussed What are docker and different key points such as docker Images, containers, docker volumes, or Docker files.
For all uninitiated, Docker is a very helpful tool that helps you to shift your application or website from one server to another server. Although there are many similar services like Kubernetes, LXC, Cloud foundry, etc but Docker is the best among them. In order to know more about docker professional services.
Docker needs help to do your server shifting work and with the help of its tools like Docker images, volumes, containers your work becomes a lot easier. And to know more about these tools click here.
In this blog, we will explain some cautious or careful things that need to be kept in mind while implementing Docker.
Tags are one of the best things when you use docker but as a coin has two sides, these tags could give you trouble. We liked tags because of their layer system and containers. But If you use the latest tag and after some months when your file can not run because the system uses “latest version” and you are using the latest word as the tag. Ultimately, you can’t track the version of your images.
Here, there are 3 main things that you should keep in mind while implementing Docker Images: –
Always create different layers for different bases, this way your system would work very effectively and fast in your respective OS. For example, an application running, your username, and finally application itself. You should definitely create your own base. The process of creation is a lot easier when one talks about docker.
Docker is all about shipping your application in the form of containers. So, the larger your Images are the more complex one brings in your application/website.
There is one term called “Docker’s commit” It allows developers to run the container and save it as in its current state of the image. It certainly gives some benefits to developers but when it is helpless when it comes to reproducing your docker image. So, it is advisable to not use it.
Real-time up-gradation in Docker is one of the best things but it or for anything. But it certainly gives you little trouble when you store the same volume of data into the same container.
Let suppose, you are a leading Investment bank and you are using Docker services in which developers store the same amount of data in a single container but when you want that data in use may be system gets confused, and this way, the container can be stopped or in some cases destroyed. So, not to do these kinds of practices in order to injunctions. On the other hand, you can make your website/application of a shared data store.
Also, don’t store any credential information or sensitive info in your containers as there might be a chance of getting hacked during the deployment process. Instead, one can certainly use environmental variables.
Just like computers, mobiles and laptops; Each container has its unique address. If you are trying to create some communication between two of your containers within your microservices or application make sure you use environment variables instead of IP addresses (of containers) in order to avoid trouble in the future.
No matter how much you are in a hurry to finish your application, you should never run more than one process at a time. It can create some troubles like managing, updating the processes, etc.
There is a common misconception among people about Virtual Machines (VMs) and Containerizations. People see containers as Virtual Machines but It is not entirely true. The key difference is containers provide a way to virtualize your OS. You can surely deploy your application into existing containers but It is only during development time. Not delivering time. While CD (Continuous Delivery) pipeline to production you must know that your application is a part of your image now. So you can not do the above practice.
These are the six important things that you should keep in mind in order to avoid troubles related to Docker. 9series is a Web development company that has some brilliant developers and experts in their field. We could be your docker or even Kubernetes support system. or solve any Docker related problems under our Docker consulting services.