{"id":1168,"date":"2021-04-21T21:29:55","date_gmt":"2021-04-21T18:29:55","guid":{"rendered":"http:\/\/leonidassavvides.com\/blog\/?p=1168"},"modified":"2023-10-17T06:49:37","modified_gmt":"2023-10-17T03:49:37","slug":"dockercontainers-vs-hypervisorvirtual-machines","status":"publish","type":"post","link":"https:\/\/www.leonidassavvides.com\/blog\/2021\/04\/dockercontainers-vs-hypervisorvirtual-machines\/","title":{"rendered":"Docker[Containers] vs Hypervisor[Virtual Machines]"},"content":{"rendered":"
<\/div>\n

Virtualization Technologies<\/h2>\n\n\n\n

Docker vs Hypervisor — Containers vs Virtual Machines<\/h2>\n\n\n\n

Wednesday, April 21, 2021<\/strong><\/p>\n\n\n\n

Category \\ Technology<\/strong><\/td>Docker [Containers]<\/strong><\/td>Hypervisor [Virtual Machines]<\/strong><\/td><\/tr>
Docker vs. Virtual Machines<\/strong><\/td> <\/strong><\/td> <\/strong><\/td><\/tr>
OS Support and Architecture<\/td>No Guest OS<\/strong>, Docker containers hosted on a single physical server with a host OS, which shares among them.<\/strong> Sharing the host OS between containers makes them light and increases the boot time. Docker containers are considered suitable to run multiple applications over a single OS kernel.<\/td>Host OS and the Guest OS<\/strong> inside each VM. Guest OS can be any OS, like Linux or Windows, irrespective of host OS.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Security<\/td>Providing root access to applications and running them with administrative premises is not<\/strong> recommended in the case of Docker containers because<\/strong> containers share the host kernel. The container technology has access to the kernel subsystems; as a result, a single<\/strong> infected<\/strong> application can hack the entire<\/strong> host system.<\/td>Virtual machines are stand-alone <\/strong>with their kernel<\/strong> and security<\/strong> features. Applications needing more privileges<\/strong> and security<\/strong> run on virtual machines. <\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Portability<\/td>Docker containers packages are self-contained and can run applications in any environment, and since they do not need a guest OS<\/strong>, they can be easily ported across different platforms.<\/strong> Also, containers being lightweight [MBs]<\/strong> can be started and stopped in very less time<\/strong> compared to virtual machines<\/td>VMs are huge in size [GBs]<\/strong> because each include standalone OS. Not easy moved to a different platform without incurring compatibility issues.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
   <\/td> <\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Category \\ Technology<\/strong><\/td>Docker [Containers]<\/strong><\/td>Hypervisor [Virtual Machines]<\/strong><\/td><\/tr>
Docker vs. Virtual Machines<\/strong><\/td> <\/strong><\/td> <\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Performance<\/td>The lightweight<\/strong> architecture of Docker containers is less<\/strong> resource-intensive than virtual machines. Most times one application per Container<\/strong>.<\/td>VMs are more resource-intensive<\/strong> than Docker containers as the virtual machines need to load the entire OS to start<\/strong>. One OS in each VM, and usually many apps running <\/strong>in this OS.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Boot-Time<\/td>Boots in a few seconds<\/strong>.<\/td>It takes a few minutes<\/strong> for VMs to boot.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Runs on<\/td>Dockers make use of the execution engine.<\/strong><\/td>VMs make use of the hypervisor<\/strong>.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Memory Efficiency<\/td>No space is needed to virtualize, hence less memory.<\/strong><\/td>Requires entire OS to be loaded before starting the surface, so less efficient, more memory.<\/strong><\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Isolation<\/td>Prone to adversities<\/strong> as no<\/strong> provisions for isolation<\/strong> systems.<\/td>Interference possibility is minimum<\/strong> because<\/strong> of the efficient isolation<\/strong> mechanism.<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Deployment<\/td>Deploying is easy<\/strong> as only a single image, containerized can be used across all platforms.<\/td>Deployment is comparatively lengthy<\/strong> as separate instances<\/strong> are responsible for execution<\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Usage<\/td>Docker has a complex usage mechanism <\/strong>consisting of both third party and docker managed tools.<\/strong><\/td>Tools are easy to use and simpler to work with.<\/strong><\/td><\/tr>
 <\/td> <\/td> <\/td><\/tr>
Reuse of Resources and Libraries<\/td>Docker Containers can reuse<\/strong> Resources and Libraries from other Containers, taking less disk space.<\/strong><\/td>No reuse<\/strong> between VMs, Redundant copies exist<\/strong>, demanding more disk space.<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Usually, Organizations are making use of the hybrid approach mostly as the choice between virtual machines and Docker containers depends upon the kind of workload offered.<\/p>\n\n\n\n

Hypervisor-2 vs Docker<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Hypervisor-1 vs Docker<\/h3>\n\n\n\n
\"Docker\"<\/figure>\n\n\n\n

Hypervisor-2 vs Hypervisor-1<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Note:<\/u><\/strong> Hypervisor 1 [Servers mainly] vs Hypervisor 2 [Desktop mainly]<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

VM Hypervisor-2 vs Docker [Linux] vs Docker [VM Linux]<\/h3>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Virtualization Technologies Docker vs Hypervisor — Containers vs Virtual Machines Wednesday, April 21, 2021 Category \\ Technology Docker [Containers] Hypervisor [Virtual Machines] Docker vs. Virtual Machines     OS Support and Architecture No Guest OS, Docker containers hosted on a single physical server with a host OS, which shares among them. Sharing the host OS … Continue reading “Docker[Containers] vs Hypervisor[Virtual Machines]”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,54,19,21,22,24,29,37,42,43,46,49,50],"tags":[89,102,138,264],"class_list":["post-1168","post","type-post","status-publish","format-standard","hentry","category-dev","category-docker","category-linux","category-mac-os-x","category-macos","category-macs","category-pc-build","category-security","category-technical","category-tech","category-virtualization","category-windows-10","category-windows-11","tag-containers","tag-docker","tag-hypervisor","tag-virtual-machines"],"_links":{"self":[{"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/posts\/1168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/comments?post=1168"}],"version-history":[{"count":2,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/posts\/1168\/revisions"}],"predecessor-version":[{"id":2151,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/posts\/1168\/revisions\/2151"}],"wp:attachment":[{"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/media?parent=1168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/categories?post=1168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.leonidassavvides.com\/blog\/wp-json\/wp\/v2\/tags?post=1168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}