In this blog post, we are going to cover the most common question we got in our FREE webinar Kubernetes vs Docker and Docker Limitations. Docker is a platform as a service(paas) product that is used to use applications on containers and Kubernetes is a container orchestration platform used to manage multiple containers.
Note: Watch our five-part video series on “Docker & Kubernetes” in these series we covered topics Docker vs Virtual Machine, Docker Architecture, Kubernetes Architecture, Kubenrtees high availability, Q/A Docker & Kubernetes.
What is docker?
Docker is an open-source platform based on Linux containers for developing, shipping, and running applications inside containers. we can deploy many containers simultaneously on a given host. Containers are very fast and lightweight because they don’t need the extra load of a hypervisor because they run directly within the host machine’s kernel.
What is Kubernetes?
In organizations, multiple numbers of containers running on multiple hosts at a time so it is very hard to manage all the containers together we use Kubernetes. Kubernetes is an open-source platform for managing containerized workloads and services. Kubernetes takes care of scaling and failover for your application running on the container.
Note: know more about the containers(Docker) & Kubernetes
Kubernetes vs Docker
A fundamental difference between Kubernetes and Docker is that Kubernetes is meant to run across a cluster while Docker runs on a single node. Docker is the most popular container platform and Kubernetes is a platform for managing containerized workloads. Kubernetes can work with any containerization technology. Kubernetes helps with networking, load-balancing, security, and scaling across all Kubernetes nodes which runs your containers.
a) Dynamic IP: The problem with docker is it uses a dynamic IP address. When we restart the container the IP address will change because IP is not static in Docker.
b) Ephemeral data storage: In docker storage, we have Ephemeral storage, not persistence storage due to this all of the data inside a container disappears forever when the container shuts down.
c) Confined to Single Host: In Docker, we can multiple containers on different hosts. Inside a single host, we can connect multiple containers to each other via a bridge network but we can’t connect two containers that are running on different hosts.
- Watch our five-part video series on “Docker & Kubernetes”
- [Video] Containers (Docker) & Kubernetes In Azure For Beginners
- Docker & Certified Kubernetes Administrator (CKA) Training
- Certified Kubernetes Administrator (CKA) Certification Exam: Everything You Must Know
- Certified Kubernetes Administrator (CKA) Certification: Step By Step Activity Guides/Hands-On Lab Exercise
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To know about what is the Roles and Responsibilities of Kubernetes administrator, why you should learn Docker and Kubernetes, Job opportunities for Kubernetes administrator in the market, and what to study Including Hands-On labs you must perform to clear Certified Kubernetes Administrator (CKA) certification exam by registering for our FREE Masterclass.