Docker with Kubernetes

Docker with Kubernetes

Docker Desktop contains the best Standalone Kubernetes user, server, and Docker CLI Integration. Kubernetes, server locally operates, on your local Instance.

It is not configurable and is a Single node cluster, Kubernetes server runs with docker container, on your local system. It used only for local testing. When Kubernetes guide is enabled, you can move your workloads, in a parallel, on Kubernetes, Swarm, like standalone containers.

Initiating or Ending Kubernetes server, that does not affect your workloads.

How to use Docker Commands

You can move a stack, on Kubernetes with docker stack deploy, docker-compose.yml file and name of stock.

docker stack deploy --compose-file /path/to/docker-compose.yml my stack

docker stack services my stack

You can view, service moved with kubect1 get services command.

Selecting a Namespace

In default, the Default namespace is utilized, you can select a namespace with –namespace flag.

Run kubect1 get services –n my-app for viewing, only the services that moved in the my-app namespace.

Overriding Default orchestrator

When testing Kubernetes, you have to move, some workloads in swarm mode. Use the DOCKER_STACK_ORCHESTRATOR, the variable for overriding, the default orchestrator, for certain terminal session, or a single docker command.

This variable is unset, the default in which case Kubernetes, is the orchestrator, or set to Kubernetes, or SWARM. The below command overrides, the orchestrator, for one deployment, by setting the variable at the start of command by itself.

DOCKER_STACK_ORCHESTRATOR=swarm docker stack deploy --compose-file /path/to/docker-compose.yml my stack.

Similarly, the –orchestrator flag may set to swarm or Kubernetes when moving to override the inbuilt orchestrator for that deployment.

Deploying, the same application in Kubernetes and swarm mode, have to battle with service names and ports.

Utilize kubectl command

The mac Kubernetes, Integration offer Kubernetes CLI command, on /usr/local/bin/kubect1. This location may be, in your shells PATH variable, so you may have to type, complete path of command or add it the PATH.

For more Date, about kubect1, you can see official kubect1 documentation; you can test command, by listing the complete available nodes.

kubectl get nodes

NAME STATUS ROLES AGE VERSION

docker-for-desktop Ready master 3h v1.8.2

Example Application

Docker has designed the following demo application, that you can move to swarm mode, or to Kubernetes, by using the docker stack deploy command.

version: '3.3'

services:

web:

image: dockersamples/k8s-wordsmith-web

ports:

- "80:80"



words:

image: dockersamples/k8s-wordsmith-api

deploy:

replicas: 5

endpoint_mode: dnsrr

resources:

limits:

memory: 50M

reservations:

memory: 50M



db:

image: dockersamples/k8s-wordsmith-db

if you have a Kubernetes YAML document, you can move it by using the Kubect1 command.

Integrated Kubernetes Orchestration from Production to Desktop

As we know, Kubernetes is an open-source system, that is for automating the complete management, placement, scaling, and routing of many containers.

The Docker platform includes a secure and best, fully conformant Kubernetes, environment for developers of each skill section. Offering out of the box, integrations for simple and common enterprise needs, while starting total flexibility for best users.

With the Docker platform, the companies can operate Kubernetes, which mutually, with swarm orchestration in the familiar cluster for total flexible Runtime.

Why Docker for Kubernetes

Complete platform Integration

The only single container, a platform with Kubernetes, which contains an integrated desktop and Image registry answer, for complete and secure software, supply chain form the production to developer.

Enterprise Ready

Many Additional Layers of security, with inbuilt, encryption and updated role-based access controls.

Ready to measure multiple tenants, and across hybrid/multi-cloud environments.

Easy On-Boarding

Going with Simplicity of Docker containers, to Kubernetes with complete Intelligent Streamlined workflows and Design. Get Initiated with Kubernetes, with a single push of a button. That is by using Docker Desktop.

Run Kubernetes in Initiation with Docker Enterprise application.

How Docker Enhance Kubernetes

Additional Features

Certified Ecosystem

Move and operate, your Kubernetes dashboard on completely guided design.

Integrated Secure Supply chain

Docker Dashboard, offers Integrated security, for the complete lifecycle of an application.

That leverage docker content, trust that digitally signs Images, from the source and they avoid un-verified content, that being moved.

Secure by Design

Architected to automatic, movement that is a secure Kubernetes cluster, with complete mutual TLS authentication and it leverage FIPS 140-2 validated, encryption in Docker Engine with Your Kubernetes movements.

With kubernetes and docker, we get more benefits when we use it completely. I have covered the best about, the both technologies, in upcoming articles, I will update more data on them.