Support a ReadWriteMany for our application in Kubernetes in a multi-replica deployment

Summary:

We need to use support a ReadWriteMany for our application in Kubernetes in a multi-replica deployment. Our Kubernetes environment script creates an environment that has CephFS created with Rook.

Experience Required:

Kubernetes
DevOps
1 of the following programming languages: JavaScript/NodeJs, Python, Java, or C#.
Linux Scripting

Pre-requirements:
Create 2 VM with at least 2 CPUs and 4 GB of RAM.
Install Ubuntu 18 LTS Server Image. Note: Proceed with default installation. During the installation, itll give you options to install additional stuff, you dont need to check anything else. This will need to be a two master cluster.

01 Work:
1. Create a very simple Web Application
Create a very simple web application in Python, C#, NodeJs, or Java that has the following endpoints:

POST /add?id={ id} &text={ text}
- This endpoint writes the text to a id.txt in a folder specified via an Environment Variable FolderPath.

string saveFilePath = Environment.GetVariable(FolderPath) + / + id.txt;
File.WriteText(saveFilePath, text)

2. GET /get?id={ id}
This endpoint get the text from id.txt from folder specified via an Environment Variable FolderPath.

string filePath = Environment.GetVariable(FolderPath) + / + id.txt;
File.GetText(filePath)


02: Add Web Application to Kubernetes with ReadWriteManySupport

Create a CephFilesystem resource and a Deployment (3 replica) in Kubernetes environment you set up with our script using the resource above. Expose this Service via NodePort on port 30001.

Verify: The resources are written by all 3 pods and returned by all 3 pods.


03: 3. Create Another Deployment
We want to ensure two separate deployments can read and write to the shared space.

Similar to above, create another deployment (2 replicas) with same web application. You can reuse the CephFileSystem from above.
Expose this Service via NodePort on port 30001.
Verify: The resources are written by all 2 pods and returned by all 2 pods.

Verify: Documents written in Deployment1 accessible in Deployment2 via /get.

Verify: Documents written in Deployment2 accessible in Deployment1 via /get.


Outcomes:

Demo functionality of ReadWriteMany and all the Verify above.
Must be reproduceable on our machine. Provide all resources developed (web App, scripts, YAMLs).
ReadWrite should work across deployments and nodes.


Work Expectations:
Must successfully demonstrate all outcomes and pass QA prior for payment.
Work in GIT

Price Includes:

All Meetings (available Mon-Fri at 10 AM EST if there are questions)
Work clarification meetings
Final demonstration meeting by developer (if needed)
Work
Bug fixes
Documentation
Instructions on how to reproduce.
About the recuiter
Member since Sep 13, 2017
Gregory P Benso
from Illinois, United States

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