{"id":73109,"date":"2019-09-27T09:59:20","date_gmt":"2019-09-27T09:59:20","guid":{"rendered":"https:\/\/www.whizlabs.com\/blog\/?p=73109"},"modified":"2020-08-31T17:33:43","modified_gmt":"2020-08-31T17:33:43","slug":"containers-in-cloud-computing","status":"publish","type":"post","link":"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/","title":{"rendered":"What are the Containers in Cloud Computing?"},"content":{"rendered":"<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The changes in the existing IT infrastructure all over the world are very prominent now. Digital transformation is the core topic of focus for almost every business nowadays. Every business understands that the legacy infrastructures could not cope with the emerging demands of digital transformation. <\/span><span class=\"s1\">Containers in <a href=\"https:\/\/www.whizlabs.com\/blog\/cloud-computing\/\" target=\"_blank\" rel=\"noopener noreferrer\">cloud computing<\/a> are one of the promising resources for ensuring digital transformation. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Apart from the major benefits for developers and the development process as a whole, containers have many credible advantages. A clear understanding of containers can help in obtaining funds for containers to forward the digital transformation objectives of the business. <\/span><span class=\"s1\">The following discussion would serve as an introductory guide for containers in cloud computing.<\/span><\/p>\n<blockquote><p>A cloud certification validates your skills and makes you stand out of the crowd. Here are the <a href=\"https:\/\/www.whizlabs.com\/blog\/5-best-cloud-certifications-in-2018\/\" target=\"_blank\" rel=\"noopener noreferrer follow\" data-wpel-link=\"internal\">best cloud certifications<\/a>\u00a0for the growth of your cloud career!<\/p><\/blockquote>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The discussion would reflect on the basic definition of containers and how containers work. Most important of all, the discussion would also reflect on the uses of Docker and the different benefits of containers. So, let us dive right away into our discussion on containers now!<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #ea7e02;color:#ea7e02\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #ea7e02;color:#ea7e02\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#Understanding_the_Containers_in_Cloud_Computing\" >Understanding the Containers in Cloud Computing<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#Containers_and_Virtual_Machines_are_Different\" >Containers and Virtual Machines are Different<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#Reasons_to_Use_Containers\" >Reasons to Use Containers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#Working_of_Containers\" >Working of Containers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#Benefits_of_Containers_in_Cloud_Computing\" >Benefits of Containers in Cloud Computing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.whizlabs.com\/blog\/containers-in-cloud-computing\/#An_Example_of_Containers\" >An Example of Containers<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Understanding_the_Containers_in_Cloud_Computing\"><\/span><span class=\"s1\">Understanding the Containers in Cloud Computing<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Containers in cloud computing are the standard unit of software for packaging code and all related dependencies. Therefore, an application could run quickly as well as effectively in different computing environments. Containers provide a logical packaging mechanism involving abstractions of applications from the actual environments where the applications run. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The decoupling relationship in a container in cloud computing helps in an easy and consistent deployment of container-based applications. You don\u2019t have to worry about the target environment with containers!<span class=\"Apple-converted-space\">\u00a0 <\/span>The target environment could be the public cloud, a private data center or the personal laptop of the developer. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Containers help in differentiating between essential concerns involved in application development. For instance, developers could focus clearly on dependencies and application logic. On the other hand, the operations team can emphasize on deployment and management. The positive point here is that each member in the application development team can focus on core functionalities.<\/span><\/p>\n<p><a href=\"https:\/\/www.whizlabs.com\/learn-kubernetes-with-aws-and-docker\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"aligncenter wp-image-72294 size-full\" src=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/kubernetes-with-aws-and-docker.gif\" alt=\"Kubernetes online training course\" width=\"728\" height=\"90\" \/><\/a><\/p>\n<h3 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Containers_and_Virtual_Machines_are_Different\"><\/span><span class=\"s1\">Containers and Virtual Machines are Different<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Another formidable highlight in the explanation of containers in cloud computing is the confusion with Virtual Machines (VMs). Containers and virtual machines are completely different terms. VMs are guest operating systems running on top of a host operating system alongside virtual access to system hardware. A container in cloud computing provides somewhat similar functions as a virtual machine. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Containers and virtual machines, both allow packing an application with libraries and other dependencies. You can get isolated environments for running software services in containers and virtual machines. However, these are the only similarities that create the whole confusion. As compared to virtual machines, containers are a lightweight and highly effective option for developers and IT ops teams.<\/span><\/p>\n<blockquote><p>Also Check: <a href=\"https:\/\/www.whizlabs.com\/blog\/creating-azure-virtual-machine\/\" target=\"_blank\" rel=\"noopener noreferrer\">Steps to Create an Azure Virtual Machine<\/a><\/p><\/blockquote>\n<h3 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Reasons_to_Use_Containers\"><\/span><span class=\"s1\">Reasons to Use Containers<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Now, let us take a look at the different reasons for using containers. We shall not dive into the advantages of containers here! On the contrary, the attention will be on features of containers that make them ideal choices. <\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">First of all, you should note that containers help in virtualization at the operating system level. <\/span><span class=\"s1\">This is certainly a prominent advantage as compared to virtual machines which provide virtualization at the hardware level. As a result, you can find that containers in cloud computing are very lightweight. <\/span><\/li>\n<li class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Also, containers start at a faster speed and share the OS kernel alongside using only a fraction of memory needed to boot an entire OS. A detailed observation of how containerization works can help in finding other reasons to use containers. <\/span><\/li>\n<\/ul>\n<h3 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Working_of_Containers\"><\/span><span class=\"s1\">Working of Containers<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Users could find runtime components such as libraries, files, and environment variables in application containers. The runtime components are mandatory for running software. Containers share resources without the need for a complete operating system for each app. The container holds a complete set of instructions for execution in the image. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The <em>container engine<\/em> helps in the deployment of images on hosts. One of the common examples is the containers docker platform, such as the open-source Docker engine and container. The basis of Docker engine and container is universal runtime runC. The primary competitive offering for Docker is the \u2018CoreOS\u2019 rkt container engine which depends on App Container (appc). <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The \u2018appc\u2019 spec is ideal open, standard container format on \u2018CoreOS\u2019 rkt container engine. One of the primary concerns that arise with containerization is the possibility of vendor lock-in by users and ecosystem partners. However, the vast assortment of open source technology underlying the container products reduces the risks of vendor lock-in.<\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Another important aspect referring to containers in cloud computing refers to working with <em>distributed applications and microservices<\/em>. Every container works independently along with minimal utilization of host resources. Application programming interfaces provide communication between microservices. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Also, the <em>container virtualization layer<\/em> helps in scaling up microservices. As a result, you can be able to address the increasing demand for load distribution and a particular application component. The element of flexibility is visible in this context. Well, that provided some clarity on how to use containers, didn\u2019t it?<\/span><\/p>\n<h3 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Benefits_of_Containers_in_Cloud_Computing\"><\/span><span class=\"s1\">Benefits of Containers in Cloud Computing<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">After a reflection on the basic definition of containers and the way they work, let us outline the advantages of containerization. The outline of container benefits in cloud computing could also strengthen our idea of containers\u2019 significance. <\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Portability<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">First of all, containers provide efficient portability. Containers involve packaging a software-independent from the host operating system. This means that the software could move away from the host platform and could run uniformly and consistently on other platforms. <\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Agility<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Agility is one of the prominent advantages of containerization. Open source Docker engine was the pioneer in providing containers with universal packaging and simple developer tools. Now, the container ecosystem relies on engines under the management of Open Container Initiative (OCI). Therefore, developers could continue using Agile or <a href=\"https:\/\/www.whizlabs.com\/blog\/top-devops-tools\/\" target=\"_blank\" rel=\"noopener noreferrer\">DevOps tools<\/a> and processes for faster application development and improvements.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Ease of Management<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Ease of management is another prominent benefit of containers. Container orchestration platforms such as <a href=\"https:\/\/www.whizlabs.com\/blog\/introduction-to-kubernetes\/\" target=\"_blank\" rel=\"noopener noreferrer\">Kubernetes<\/a> are ideal for installing, scaling, and managing containerized workloads and services. Kubernetes work effectively with containers Docker and other container systems complying with Open Container Initiative (OCI) precedents. The benefits of container orchestration platforms also help in simplifying various management tasks. The management tasks can include rolling out new versions of apps and scaling containerized apps.<\/span><\/p>\n<blockquote><p>Also Read:<a href=\"https:\/\/www.whizlabs.com\/blog\/interesting-kubernetes-facts\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Top 10 Kubernetes Facts You Need to Know<\/a><\/p><\/blockquote>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Fault Isolation<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Fault isolation is an inherent characteristic of containers since each containerized application operates independently. So, failure in one container would not influence the activity of containers. Therefore, it is easier for development teams to identify and resolve any technical issues in a container. As a result, you don\u2019t have to put other containers in downtime. Most important of all, the container engine could use OS security isolation techniques for isolating any faults in the containers. <\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Efficiency<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Another dominant factor which shows the validity for using containers is their efficiency. Applications in containerized environments share the OS\u2019 kernel and application layers in a container. Therefore, containers are more efficient than virtual machines in terms of smaller capacity and start-up time. Furthermore, containers utilize lower compute capacity, thereby implying better server efficiency and lower costs for server and licensing. <\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Speed and Transparency<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Finally, the concern of speed is a notable factor to validate the use of containers in cloud computing. Containers can share the OS kernel of a machine, thereby reducing the overhead on the machine. As a result, application development and deployment become easier and faster. The allocation of specific resource limits to applications in containerized environments also prevents any form of resource conflicts. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">You should also note the benefits of transparency in containers which help in monitoring application version. Users could find out the current version of application code and related dependencies. So, you can store and track the different editions of the container and roll-back to previous versions, if possible.<\/span><\/p>\n<p><a href=\"https:\/\/www.whizlabs.com\/docker-certified-associate\/practice-tests\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"aligncenter wp-image-72446 size-full\" src=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/docker-leaderboard.jpg\" alt=\"Docker Practice Tests\" width=\"728\" height=\"90\" srcset=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/docker-leaderboard.jpg 728w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/docker-leaderboard-300x37.jpg 300w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/docker-leaderboard-640x79.jpg 640w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2019\/08\/docker-leaderboard-681x84.jpg 681w\" sizes=\"(max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<h3 class=\"p1\" style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"An_Example_of_Containers\"><\/span><span class=\"s1\">An Example of Containers<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The simplicity of container architecture and the process on how to use containers is a formidable factor underlying container\u2019s popularity. <a href=\"https:\/\/www.whizlabs.com\/blog\/docker-fundamentals\/\" target=\"_blank\" rel=\"noopener noreferrer\">Docker<\/a> is one of the notable names among containers and is known for its diverse functionalities. Docker is open-source in nature and helps in automation of application deployment in a software container. The example of Docker is very important in this discussion on containers in cloud computing. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The benefits of docker are also similar to the ones in the previous sections. Docker provides faster development, portable application packaging, consistent behavior on different platforms, easy scalability, and better monitoring. Some of the notable terms related to Docker include \u2018container,\u2019 \u2018image,\u2019 \u2018port,\u2019 \u2018volume,\u2019 \u2018registry\u2019 and \u2018Docker Hub.\u2019 Let us take an example of using Docker to understand containers better!<\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">docker run ubuntu \/bin\/echo \u2018Hello World\u2019<\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">In this example, \u2018docker run\u2019 is the command for running a container. The \u2018ubuntu\u2019 denotes the name of the image you run. With an image specification, Docker searches for the image on Docker host first. In case the image is not found locally, the image retrieval is done from Docker Hub. The \/bin\/echo \u2018Hello World\u2019 is a command that you will run in a new container. The container functions by simply printing \u201cHello world\u201d before finishing the execution.<\/span><\/p>\n<blockquote><p>Preparing to become a Docker Certified Associate? Follow this comprehensive guide for <a href=\"https:\/\/www.whizlabs.com\/blog\/docker-certified-associate-exam-preparation-guide\/\" target=\"_blank\" rel=\"noopener noreferrer\">Docker certification preparation<\/a> and get ready to become an expert in containerization.<\/p><\/blockquote>\n<h4 class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">In a Nutshell<\/span><\/h4>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Containers in cloud computing are surely new-generation miracles for the IT landscape. With containers, we can look at a future without any hassles for the development and operations team i.e. <a href=\"https:\/\/www.whizlabs.com\/blog\/devops-introduction\/\" target=\"_blank\" rel=\"noopener noreferrer\">DevOps<\/a> teams. The applications of containers are also aligned with the emerging tenets for big data and their significance for organizations. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">For example, web servers could run in a container for ensuring public access to data without risks of information leaking to adjacent containers. Another possible scenario could be machine learning algorithms running in different containers. These different containers could access the same data for various types of analysis while improving the speed and quality of outcomes. The speed, efficiency, transparency, and portability aspects of containers can take them a long way in the IT domain.<\/span><\/p>\n<p style=\"text-align: justify;\">The knowledge of containers will be helpful for every DevOps professional irrespective of the cloud platforms they are working on. So, it is recommended for you to gather more knowledge about the containers. You can also validate your knowledge and skills with a DevOps certification. If you&#8217;ve already planned, enroll in the <a href=\"https:\/\/www.whizlabs.com\/devops-certifications\/\" target=\"_blank\" rel=\"noopener noreferrer\">DevOps certification training courses<\/a> and give your preparation a new edge.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The changes in the existing IT infrastructure all over the world are very prominent now. Digital transformation is the core topic of focus for almost every business nowadays. Every business understands that the legacy infrastructures could not cope with the emerging demands of digital transformation. Containers in cloud computing are one of the promising resources for ensuring digital transformation. Apart from the major benefits for developers and the development process as a whole, containers have many credible advantages. A clear understanding of containers can help in obtaining funds for containers to forward the digital transformation objectives of the business. The 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