The Role of Docker in DevOps
What is Docker?
Dockerisaset ofplatformasaservice productsthat useOS-levelvirtualization todeliver software in packages called containers. The service has both free and premium tiers. The softwarethathoststhecontainersiscalled Docker Engine.
Docker Benefits Include:
• HighROIandcostsavings
• Productivityandstandardization
• Maintenanceandcompatibility
• Rapiddeployment
• Fasterconfigurations
• Seamlessportability
• Continuoustestinganddeployment
• Isolation,segregation,andsecurity
Docker vs. Virtual Machines
Virtual Machine is an application environment that imitates dedicated hardware by providing an emulation of the computer system. Docker and Vmboth have their set of benefitsanduses,butwhenitcomestorunningapplicationsinmultipleenvironments,both canbeutilized.Sowhichonewins?Let'sgetintoaquickDockervs.VMcomparison.
OS Support: VM requires a lot of memory when installed in an OS, whereas Docker containersoccupylessspace.
Performance: RunningseveralVMscanaffecttheperformance,whereas,Dockercontainers arestoredinasingleDockerengine;thus,theyprovidebetterperformance.
Boot-up time: VMs have a longer booting time compared to Docker. Efficiency:VMshavelowerefficiencythanDocker.
Scaling: VMsaredifficulttoscaleup,whereasDockeriseasytoscaleup.
Space allocation: You cannot share data volumes with VMs, but you can share and reuse themamongvariousDockercontainers.
What is DevOps?
DevOps is the combination of cultural philosophies, practices, and tools that increases an organization’s ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software developmentandinfrastructuremanagementprocesses.
DevOps benefits include:
Technical advantages:
• Fastandcontinuoussoftwaredelivery
• Quickerresolutionofproblems
• Reducedmanagementcomplexities
Business advantages:
• Fastfeaturedelivery
• Enhancedcollaborationandcommunication
• Moretimeforcreativityandinnovation
• Stableoperatingenvironments
Cultural benefits:
• Happier,productive.andcollaborativeteams
• Improvedemployeeengagement
• Moregrowthopportunities
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