David H. Email & Phone Number

Warner Robins, Ga, Us

Washington, District Of Columbia, Us

Washington, District Of Columbia, Us

• Collaborative delivery of customer requirements using Red Hat OpenShift • Key contributor in the upgrade of existing openshift 3.x install to 4.x. • Collaborate with IT team to design, implement, and fully automate enterprise pipelines using a suite of DevSecOps tools. • Automated the Deployment of EKS cluster using terraform in both AWS. • Created CI/CD pipeline to automatically run ansible jobs and playbooks. • Developed CI/CD pipelines to automatically run terraform scripts as needed for deployments of infrastructure. • Orchestrating Dev-Ops infrastructure as code with Terraform and cloud services AWS, Azure using Jenkins Pipelines. • Created and automated the deployment of HashiCorp Vault in AWS. Using it in CI/CD pipelines.

Hickory, North Carolina, Us

• Supporting the Jenkins servers and ci/cd workflows. • Setup docker images based on build server bash scripts to allow multiple builds to be run on various servers that need special configurations. • Setup and patch backup build solution on jenkins in Google cloud using a combination of compute instances and docker images. • Utilize google container registry for all images that are in the build lifecycle. • Setup on prem systems to connect to googles gpc and allow access to various products. • Ensure best practices and patterns are being implemented for cloud solutions • Starting testing on moving development systems to kubernetes. • Migration of legacy systems to updated OS and software versions. • Setup Zabbix 5.0 to monitor systems and alert with issues.

Nashville, Tn, Us

• Performing application and system administration tasks, including data backups and scheduled jobs. • Installation of Docker and Docker swarm servers. • Creation of custom Docker container images, tagging and pushing the images. • Worked on creating the Docker containers and Docker consoles for managing the application life cycle. • Developing Docker images to support Development and Testing Teams and their • pipeline. • Setup a logging environment Elasticsearch for consolation of logs to be viewed on by Kibana. • Upgraded mariadb master/slave setup running on Mariadb 10.1 to 10.2 in a multimaster setup with 3 nodes. • Setup web and mariadb backups to be stored in s3 and encrypted using builtin encryption and also gpg keys. • Setup Cloudwatch alerting to notify on usage and costs.

Knoxville, Tn, Us

• Automating system deployments using chef. • Troubleshoot complex system issues. Recognized as Linux Subject Matter Expert. • Developed Chef cookbooks to ease web application deployment for PHP, Ruby, and Node.js.• Helping to migrate various platforms from softlayer,rackspace and amazon to Azure.• Ticket management with JIRA.• Coded custom hooks into and automated custom notifications (Hipchat, PagerDuty, Rally, JIRA) of build activity, package deployments and build errors that arose. • Configured server security with SSL, IPTables, TCPWrappers, XInetd, Fail2ban SELinux• Setup and maintain continuous builds via Jenkins jobs, bash scripts, and build scripts. • Worked with developers to setup jobs in jenkins to assist with code deployments for legacy platforms. • Performed AWS Network administration; AWS instance monitoring, troubleshooting, deployment optimization, root cause analysis and preparing documentation.• Provide Enterprise Level Security for Linux Servers using various hardening techniques, including ip packet filtering, intrusion detection, SELinux, TCP Wrappers and securing services such as DNS, BIND, and Apache• Provide systems administration, installation, deployment and maintenance of Linux Servers for production, staging, QA and development environments.

Reston, Va, Us

• Develop / Support Automated Infrastructure for production and development.• Interact with Scientists provide solution as needed for various projects including HPC environments. • Developing script / automate daily tasks based on API (python || bash) .• Setting up Backup / Security Policy for existing infrastructure. • Automate system management / deployment using puppet. • Support of Jenkins server to automate and manage builds ran by various lab groups.• Develop packages (rpm) to install custom scripts and applications. • Build scientific software rpm using MPICH / OpenMPI library for cluster. • managing the setup of DNS and SSO authentication to installation of custom software from version control systems • Manage new openstack infrastructure and migrating old servers off kvm.

New York, New York, Us

Deployed Puppet for configuration management to existing infrastructure.Currently migrating current build process to puppet from existing bash/perl scripts.Deploying mcollective for orchestration. Writing custom mcollective plugins to deal specifically with our needs.Deployed centralized logging via rsyslog and LogStash with Kibana as the web frontendDeploying a distributed Jenkins environment for continuous integration/builds that checks puppet code in git and would alert for any errors.Responsible for custom packaging into RPMs for custom applications with special needs.

Sarasota, Florida, Us

Installing and using KVM for virtual machines for the development team to have clean environments to test code on. Setup Greenbone Security Assistant with openvas to automate scans and look for security vulnerabilities in the network setups. I have it scanning all layers of the network from Development to production.Currently migrating our production environment to Amazon services. We Have shutdown 2 datacenters and migrated all the physical leased hardware to amacon ec2 instances. Using salt and salt-cloud to manager instances in amazon. We currently run approximately 300 servers split between various regions. Run puppet on all legacy systems but moving all recipes to salt. Used bash/python/perl for various scripts ranging from file concatenation to custom dashboards. used python with fabric to push out configs and files to various servers. We currently using salt to phase out the custom scripts. Use haproxy for everything from loadbalancing mysql to various web services. Investigating openstack for internal Dev and stg environments. Setup and support of ubuntu/debian flavors of linux for production and development environments.Setup a logging environment running Logstash, Redis-server, and Elasticsearch for consolation of logs to be viewed on by Kibana.Setup mysql to run between 3 servers for qa and staging environments running Percona cluster in a multimaster configuration loadbalanced with haproxy .Run standard mysql with replication in production to give the master and slave layout for high volume.

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