Sr. System Administrator Resume
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SUMMARY
- Seasoned Senior Systems Engineer with over 10 years of experience in RHEL 5/6/7/8 with Chef Automation and PoC experience with RHEL Satellite.
- Extensive experience in end - to-end server builds on VMware vSphere and HP/DELL standalone servers.
- Effectively plan, install, configure and optimize IT infrastructures to achieve high availability and performance.
- Proven ability to create and deliver solutions tied to business growth, organizational development and systems/network optimization.
- Skilled problem identifier and troubleshooter comfortable managing systems, projects and teams in a range of IT environments.
TECHNICAL SKILLS
Operating Systems: Red Hat Enterprise Linux 5/6/7, AIX 5/6/7, Ubuntu, Fedora, Windows Server
Virtualization: ESXi 5/6, VIOS, KVM
Configuration Management: Ansible, Chef
DevOps Tools: Dockers, Jenkins (CI)
Monitoring/Logging: IBM Tivoli, Nagios
Version Control Tools: GIT, GitHub
Web Servers: Apache Tomcat, WebSphere, nginx
Languages/Scripts: Bash Shell, Korn Shell, Python, Awk, Sed
SDLC: Agile, Scrum
Technologies: DNS, NIS, LDAP, FTP, SSL, SSH, HTTPS, SFTP, TFTP, NFS, NAS, SAN
Cloud Platform: AWS, OpenStack
PROFESSIONAL EXPERIENCE
Sr. System Administrator
Confidential
Responsibilities:
- Installed, Configured, Managed, administrated all UNIX/LINUX servers, includes the design and selection of relevant hardware to Support the installation/upgrades of Red Hat (5/6/7), Solaris 8/9/10 operating systems.
- Scanning the newly assigned LUNs to the serves and assigning them to volume group and creating file systems using Logical Volume Manager (LVM).
- Installed Chef Server Enterprise on premise/workstation/bootstrapped the nodes using knife and automated by testing Chef recipes/cookbooks with test-kitchen/chef spec.
- Extensive experience in configuring and building RHEL 5/6 servers using Kick start.
- Extensive experience in User Administration with creating users, groups, and giving permissions.
- Installing and managing packages using command line utility using RPM and YUM
- Performing servers’ consolidation and virtualization using VMware virtual infrastructure, VMware ESX, up gradation of VMware tools.
- Configured Oracle ASM RAC ONE Cluster disks and by synchronizing the EMCPOWER devices between two cluster nodes.
- Installed and configured GPFS to distribute and manage data across multiple servers.
- Adding storage to the cluster disks and increasing/ decreasing the file system in RHEL.
- Upgrading HP ILO & BIOS Firmware as HP recommendation regularly on HP servers
- Administration and support of homogeneous production and development server infrastructure of multiple flavors of Linux.
Linux Administrator
Confidential
Responsibilities:
- Installation of Red Hat Linux Enterprise Server 5/6 on Dell and HP x86 HW.
- Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6.
- Responsible for Installation, Configuration Management, Maintenance and Systems Development of Linux Systems.
- Day-to-day administration on Red Hat Servers, which includes Installation, upgrade and loading patches.
- Configured logical volumes using logical volume manager (LVM) and also configured mirroring.
- Worked on setting up SSH SCP, SFTP connectivity between UNIX hosts.
Linux Administrator
Confidential
Responsibilities:
- Perform Unix system administration (adding users, setting up the security of users, creating, mounting and maintaining file systems, and managing related file system security).
- Drive the bridge calls to facilitate business critical systems outages by performing administrator functions.
- Participate in Change Management and troubleshoot management.
- Preparing the task plans for change activities and drive the task plan review calls with different teams like development and operations.
- Daily, weekly and monthly deployments of application packages into the application server (web logic) on SUN, HP, IBM platforms of production servers.
- Interact with various groups like Application Production support, Networking, Security, Storage system groups to maintain high availability and business continuance.
- Install OS level patching for upgrade and maintenance during the change activity.