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Linux System Administration, Operations, and Engineering
Certified RHCSA: Red Hat Certified System Administrator.
View some projects and code:
I have developed an automation framework for remediation of alerts and issues. Nagios alerts are fed in to the automation framework and playbooks run to resolve the issues. Includes mass server auditing, storing statistics and metrics, playbooks for various problems, and more.
Virtualization and Cloud Computing
Experience with OpenStack (Nova, Swift, Glance, Keystone, Neutron, Melange, Entropy), XenServer, XenClassic, VirtualBox, Vagrant, some LXC, some KVM, some VMware.
Applications and Technologies
Deep knowledge and understanding of many open-source applications and technologies including: OpenStack, Nagios, Graphite, MySQL, nginx, Apache, WSGI, Memcached.
Experience with configuration management and related tools: Ansible, Puppet, Salt.
I have developed numerous online applications and sites – view my portfolio.
Technologies and languages: Python, Django, Flask, Ruby, Rails, PHP, MySQL, PostgreSQL, Perl, CGI, HTML, minor graphics design, WordPress, Drupal, Pelican, Jekyll.
Deep knowledge and understanding of hardware maintenance, server setup, installation, networking, advanced configuration, and server migrations. I have performed numerous server migrations on both Linux/Unix and Windows servers. Migrations include moving all clients and their data, configuration settings, testing and verifying everything is correct – with zero downtime.
Operating Systems Experience: Linux (I’ve used most flavors, but primarily use Debian, CentOS, RedHat, Fedora, and Ubuntu), FreeBSD, Solaris, Windows 2012 Server, Windows 2008 Server, Windows 2003 Server, Windows 2000 Server, Windows NT4 Server.
MySQL, PostgreSQL and Microsoft SQL Servers: planning and deployment database servers and databases themselves. Extensive knowledge of creating and maintaining databases, backups, recovery, replication (master-slave, master-master) and MySQL Cluster/NDB database clusters.
Extensive knowledge of SQL language and developing complex SQL queries. I’ve written many SQL queries to generate reports and collect metrics. Knowledge, understanding and use of joins and subqueries. Experience with ORM such as SQLAlchemy.
Configuring networks and networking. Troubleshooting networking issues. Planned and installed LAN and WAN networking setups working for a datacenter in a carrier hotel and for an ISP.
Technologies: software-defined networking (SDN) with Open vSwitch (OVS) and Nicira NVP, Load Balancers (F5 BIG-IP), Firewalls (Netscreen, iptables, pf, pfSense), Switches (Cisco Catalyst, Dell PowerConnect), Routers (Cisco and Linux/Unix), Wireless.
Interests and Hobbies
- Astronomy and astrophotography
- Finance, investing, stock trading
Further information available upon request. Contact me for more information.