OBJECTIVE:

Looking for a REMOTE DevOps/Admin occupation ONLY

SUMMARY:

Linux Systems Administrator and Information Technology Professional with over 11 years hands - on experience in Linux/Unix Systems Administration; RedHat/CentOS, Solaris 9,10,11, VMWare ESX/ESXi, Apache Webserver and Storage Technologies

TECHNICAL SKILLS AND EXPERTISE:

Platforms: Sun/Oracle Solaris 9/10, CentOS/RedHat RHEL 3/4/5/6/7, Fedora, X86/X64 platforms, Windows XP/7, Windows Server 2008/2012 R2

Hardware: HP Proliant DL380, DL585 DL360, BL460c, BL680c, HP c7000 Bladesystem, HP Storageworks SAN, Dell Poweredge, Dell Compellent SAN

Languages: Bash Shell Scripting, HTML

Solutions and DevOps Tools: Enterprise switches, EVault, NetBackup, TCP/IP, LAN/WAN, VPN, RedHat Satellite Network/Spacewalk, Puppet, Nagios, Xymon/Hobbit Monitoring, Tripwire, VMWare, Virtualbox, Elasticsearch, Logstash, Kibana, Ansible, GlusterFS, AWS, Git/Github, Mesos, Mesosphere, Marathon, Chronos, Twistlock, HAProxy and more

PROFESSIONAL EXPERIENCE:

Confidential, Washington, DC

Senior Linux Systems Administrator

Responsibilities:

• Worked primarily on RHEL 6/7
• Supported environment of over 2000 users and 350-400 RHEL servers across VMware infrastructure, physical systems, and AWS
• Monitored environment via solarwinds
• Implemented audit logging, and psacct to monitor systems for file alterations and identification of the individual who altered the file
• Utilized wireshark to confirm whether our internal sites were passing credentials in clear text from the browser
• Analyzed and deployed applications based on our SIP
• Performed troubleshooting of splunk servers to allow access to security teams and get the servers back to operating status
• Troubleshooting errors in applications like Tomcat and Apache, O/S level errors as well errors due to increased system loads and slow systems
• Configured a robust ELK (Elasticsearch, Logstash, Kibana) Stack to allow for a more centralized logging of our environment in AWS. Incorporated shield to create a browser prompt for user credential and route all traffic via SSL/TLS
• Hardened and configured RHEL7 and RHEL6 Baselines using both the STIG and OSCAP(before RHEL 7 STIG draft was released)
• Tightening firewalls, and restricted access to system via group based SSH, and file access to strictly “need to know”
• Worked to rollback our production intranet server after a failed migration from one cloud environment to another
• Responded to user tickets which dealt with permission issues, file loss, application pushes and more
• Communicated with developers, service desk, and upper management
• Capacity planned and engineered ways to help organization deploy microservices via mesosphere, marathon, AWS ELB, docker, Twistlock, and Docker Trusted Registry in AWS environment
• Participated in daily conference call scrum meeting to discuss Mesosphere project
• Advised senior management of ways to tune devops tools, and proper ways to utilize them to achieve a more robust and highly available environment
• Learned ansible to be able to deploy required technologies for automation of applications, while utilizing puppet for system hardening and baselining, thereby causing any local file alteration to revert back to baseline after a few minutes
• Tested out OSSEC and Lynis as means for scanning mircoservices and RHEL 7 following security department concerns that Nessus might not be able to perform the scans
• Worked with the service desk to develop forms that would assist in streamlining tickets and user requests so all user request can be processed as fast as possible
• Implemented glusterfs filesystem in our environment to allow further data warehousing to solve the problem of RHEL having a maximum filesystem size of 16TB
• Troubleshooting servers which crashed in AWS
• Experience working in an Agile, fast paced, DevOps environment
• Utilized github/git to track projects and RHN Satellite to push patches to systems

Confidential, Washington, DC

Linux Systems Administrator

Responsibilities:

• Worked primarily with RHEL 3/4/5/6/7
• Demonstrated proactive approach to problem solving. To prevent random hardware failures in the datacenters, I rewired the environment to allow for multipathing of fiber cables, switches, and electricity
• Team lead in upgrade and configuration of environment from VMWare ESX 4.1 to 5.5 and replication redundancy of the VMFS LUN’s
• Storage Administration of the 100TB HP storage arrays
• Participated in agency migration from desktops to Virtual Desktops and Portable tablets which could get patched once individual connects to environment via LAN or VPN
• Ensured redundancy of virtual environment by implementing VMware Data Protection and ensured disaster recovery by configuring all systems to be backed up remotely as well as locally
• Enforced monthly restorations to be sure the backups were indeed functional
• Implemented token based two factor authentication for enhanced security on RHEL 3/4/5/6 systems for user access via secure shell. Prevented DDoS and brute force attacks on systems
• Applied security baseline policies and protocols on systems, and implemented patching to avoid vulnerabilities. Sandboxed RHEL3/4 to prevent malicious attacks as they were “end of life” operating systems
• Responded to customer tickets and also provided desk side support for customers requiring further assistance
• Automation using bash scripting, and DevOps tools
• Set up central logging of both our linux and windows system via ELK Stack in the environment. Solution provided a means for auditing the environment, and access log viewing
• Utilized Puppet in package, service, user management and executing commands on multiple systems simultaneously
• Apache/http administration and troubleshooting
• Participated in 24/7 on-call rotation and utilized xymon/hobbit for system monitoring
• Setup and implemented EVault/Seagate Backup of servers, databases, and Virtual Machines. Very knowledgeable of backup/restoration to/from local or remote sites
• Configured tripwire enterprise to monitor configuration files such as fstab, iptables, sshd config and more, and was notified via email of any unauthorized file manipulations
• Experience working with vendors to scale product design and implementation by learning new technologies which can be applied to the environment
• Set up micro and medium instances of RHEL utilizing Amazon Web Services (AWS) EC2 for our development/test environment
• Documented issues which took an extended period to resolve, and reported failures in production which caused downtime to senior management as well as the way it was resolved and ways to prevent future occurrences
• Participated in weekly status meetings to discus the status of the environment with senior management and recommend ways to improve on current conditions
• Advised senior management and recommended a means to save the organizations budget by migrating some physical servers to virtual, thereby reducing cost of the datacenter operations and ensuring RAID for hardware redundancy
• Knowledgeable of RedHat Satellite Network
• Migrated environment from the monitoring software xymon/hobbit/big brother to nagios

Confidential, Landover, Maryland

Linux/UNIX Systems Administrator

Responsibilities:

• Responsible for installation, configuration and administration of Solaris and Linux servers
• Performing needs assessment and patch management for Oracle Solaris Linux Enterprise systems.
• Infrastructure hardening and Security Administration & Installation on multiple systems
• Experience in Virtualization. Expertise in establishment and configuration of Solaris virtual environments.
• Installed multiple sparse and whole root zones within one physical instance of Solaris 10.
• Experience with Internet technologies including TCP/IP and HTTP, NFS, FTP, NTP, DHCP, DNS
• Performance Monitoring and capacity planning in anticipation of system resource usage and needs.
• Setup ZFS quotas, reservation and automatic NFS-share of directories
• Used SMF system utilities
• Experience with Apache Webserver installation and administration
• Setup Red Hat Kickstart and Solaris Jumpstart server facility
• Working knowledge with shell scripting using Bourne Again Shell (BASH)
• In-depth knowledge of NFS, DHCP, FTP, Samba
• Experience working with Nagios for system monitoring of servers
• Implemented RAID 0-5 solutions with VERITAS Volume Manager (Symantec VERITAS version 6.0).
• Installed and configured Symantec VERITAS NetBackup master, media and client servers.
• Setup VERITAS NetBackup policies.
• Working knowledge with SAN, NAS
• Experience using YUM and RPM for package management
• Logical Volume Management maintenance
• RHEL virtualization on VMWare ESXi, VMWare Workstation, Kernel-based Virtual Machine

Confidential, Landover, Maryland

Solaris Systems Administrator

Responsibilities:

• Experienced with zpool including creating, replacing disks.
• Adding spaces, importing zpools.
• Creating and set mounts points and user-mount points.
• Performed data management using native Solaris utilities for archiving and compression.
• Used VI editor to edit necessary files.
• Administered user accounts
• VMware for virtualization and installation of OS
• Troubleshooting user logins using various remote login utilities.
• Proficient in troubleshooting system problems.
• Performed administration and monitored job processes using associated commands.
• Monitored client disk quotas & disk space usage. System performance monitoring and tuning.
• Maintaining and troubleshooting network connectivity.
• Set up mount points on Solaris servers for mysql database.
• Creating and Managing root and sparse zones
• Customized user environment for users.
• Monitored system logs.
• System patching and upgrading
• Shell scripting using Bash

Confidential, Riverdale, Maryland

Systems Analyst/Administrator

Responsibilities:

• Monitoring TCP/IP network environment
• Familiarity with network systems such as servers, switches, firewalls and routers.
• Network infrastructure design
• File system management
• Scripting using BASH
• User account administration
• Linux system security administration
• Troubleshooting and system maintenance, resolving software and hardware queries.
• Customer liaison
• Scheduling backup of files.
• Install, configure and maintenance
• 24/7 call in service
• Virus Protection Software Installation.
• Managing Active Directory users and groups
• Logical volume management
• Unix administration
• Storage management with SAN/NAS
• Conduct software and hardware evaluations, provide technical analysis on systems
• Performed ongoing performance tuning, hardware upgrades, and resource optimizations
• Configured CPU, memory, and disk partitions as required
• Performed periodic performance reporting to support capacity planning.
• Responsible for security - intrusion prevention and intrusion detection systems
• Performed additional duties as assigned by management
• Maintained professionalism, good attitude and appropriate behavior with personnel and clients.