DEVOPS ENGINEER

BUSINESS IT SYSTEMS PTE LTD (
(Remote external worker)
Projects:
- Multi Tenant shared platform to support the CI/CDof customized customer
Odoo - PostgreSQL - MongoDB stacks in AWS cloud
Tasks:

- Implement a Marathon - Mesos cluster (formerly known as DC/OS) in AWS using Ansible Playbooks and Terraform. AWS services used were security groups, IAM, EC2 (public and private cluster nodes),
VPC, ELB, and S3
- Developing of json DC/OS deployment description template files
- Deployment of Marathon-LB (Haproxy + dynamic configuration) as SSL termination and layer 7 edge load balancer where all the vhosts pertaining to each customer were configured. This service was setup in high-availability
- Dockerization of customs Postgres, MongoDB and Odoo apps.
- Deployment of an ELK (Filebeat, Logstash, Elastitcsearch and Kibana)stack for central logging of apps and DC/OS services.
- Implementation of a Nexus server in DC/OS to host a docker private registry and a pip python repository.
- Deployment of Marathon Acme for the automatic generation of free letsencrypt ssl certificates.
- Implementation of self-managed Gitlab server in DC/OS. Automatic schedule backups to an S3 bucket.
- Deployment and configuration of Nagios and nrpe-clients with ansible.
Configuration of checks for disk space, mem, load,swap space, DC/OS services, and app http endpoint health.
- Deploy a self-healing and autoscaling Jenkins cluster on AWS. This deployment was fully automated using a Cloudformation template. It uses an ECS cluster, Auto-Scaling Groups, Cloudwatch Alarms, EFS Storage, Load Balancer, and VPC.
- Create jenkins pipeline jobs to automate any task related to the installation and configuration of complementary apps like ELK stack, Nagios, Gitlab, Nexus and the DC/OS cluster.
- Develop a CI/CDpipeline which automates all the process of building, test and deployment of the customer stacks in the staging and production environments. The pipeline was developed using Jenkins best practices like the scripted pipeline language and shared libraries to obtain DRYpipeline code. The pipeline is autotrigger after a git push taking advantage of a Gitlab and Jenkins integration.
- Develop Jenkins pipelines to restore, backup in schedule by following a backup plan the databases of all customer PostgreSQL,ELK stack, Gitlab, Jenkins, MongoDB, and any other source of data. The status results of the backups are sent by SMS or email using the SNS service in AWS
- Improve security by configuring the AWS System Manager Session
Manager Service in every instance to replace the bastion-based SSH access with the session terminal based on the IAMuser permissions. I also used the System Manager to deploy triggers to replace the function of the Linux SCP command

- Deploy AWS Ops Automator using Cloudformation and set up the automated and scheduled snapshot backup of important EBS volumes.
The AWS Ops Automator is based on Amazon CloudWatch, SNS, Lambda, DynamoDB, SQS queue, and S3.
- Create a Jenkins pipeline to fully automate the creation of a customer stack. The scripted pipeline automates the creation or cloning of a project in Gitlab (odoo addons) using the Gitlab REST API, create staging and production branches, create the Python pip requirements file inside the addons repository, assign members and global deployment keys using the Python gitlab library, creates the customer credentials (PostgreSQL password) in Jenkins credentials store, creates the jenkinsfile with custom properties to deploy odoo, creates the custom Dockerfile, and create a fully configured Jenkins multibranch job with the DSL language.

- Development of an Azure ARM Template to deploy the toolchain app veChain on
Azure Marketplace
Tasks:
- Definition of parameters and variables in the ARM template
- Configure location of the setup bash script i and related docker files in blob storage
- Configure resources of Public IP address, Network Security Groups, Network Interfaces, Load Balancer, and Virtual Machine.
- Write the setup script which installs the blockchain app dependencies, Docker, Docker-Compose, Nginx, Redis, and MySQL. This script also generates and applies the nginx configuration, app related configuration, and the docker-compose file which is executed at the end of the script.

SELECTION OF SOME INDEPENDENT EXPERIENCE related to DevOps

Automate a Laravel application Deployment to Managed DigitalOcean
Kubernetes with CircleCI
Jan / 2020
DevOps expert
Project Details:
Laravel application that we will like to set up an automated deployment to Digital
Ocean Managed Kubernetes. After deployment, the application will be served
NGINX INGRESS.
https://www.freelancer.com/projects/laravel/Automate-Laravel-application-Deploym ent/reviews

Technologies used: Linux, CircleCi, Github, Kubernetes, Docker, Laravel, PHP, Nginx

Write python or bash script to organize files https://www.freelancer.com/projects/Software-Architecture/Write-python-bash-script- organize/details
I need a script to move files from one directory to the right subdirectory under another directory.
There are files in directory Alpha. Under directory Beta, there are many subdirectories with names.
I need a script, either python or bash, to evaluate each file from directory Alpha and find the subdirectory in Beta that contains a match of one of the words in the name of the file. When it finds a match, move the file to that directory. If there is no match, leave the file in Alpha.
Technologies used: Linux, Python