SUMMARY

• 5+ years of extensive Linux/Unix Systems Administration in installation, configuration, administration, troubleshooting, tuning, security, backup/ recovery and upgrading Enterprise Linux (RedHat) and Sun Solaris in large cluster environments.
• Good expertise working with various open source linux flavors like CentOS, Ubuntu, Fedora.
• Configured and dealt with puppet 4.x,5.x version to manage manifests(automation) in huge environment.
• Good knowledge in implementing ansible playbooks to automate real - time infrastructure activities like builds, day-to-day server’s/application tasks.
• Configured and used Jumpstart, Kickstart, Ignite and NIM to install OS on various QA, PROD environments in large complex environments.
• Expertise hands in VERITAS, Cluster Server, and HP Service Guard in supporting high availability mission critical servers.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager, Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
• Good working experience with configuration management tools like puppet, Ansible, CFEngine
• Good Expertise experience working with CI/CD tools like Jenkins, TeamCity, Gitlab.
• Proficient with container systems like Docker and container orchestration like EC2 Container Service, Kubernetes, worked with Terraform.
• Experience with Backup management and recovery policies using VERITAS Net-Backup.
• Extensive experience in creating physical volume, logical volume, volume groups using LVM’s in Linux and HP-UX (ITANIUM and PA-RISC).
• Excellent working knowledge in configuring and Administering NIS, NFS, DNS, DHCP, LDAP, Samba in heterogeneous environment.
• Excellent in Configuring and Administering NFS, SMTP, DHCP, samba in heterogeneous environment.
• Experience in working with Virtualization platform’s which includes majorly VMware ESX hosts/Clusters 5.x,6.x versions.
• Experience using cloud resources from Amazon like EC2 instances, Route 53, and many services to implement concept of hybrid cloud from enterprise perspective.
• Expert in Installation, configuration of Patches and Packages using rpm and yum for linux environments.
• Proficient in dealing with physical hardware racking and setting up infrastructure which includes Dell IDRAC’s and HP hardware and various Sun Sparc Enterprise E5K, 10K, 15K, 20K, 25K and maintenance/support.
• Expertise in System performance tuning Configuration at kernel level and also custome defined at application layers.
• Expertise in documenting IT Infrastructure Administration with project management tools like Sharepoint, Wiki for content management tools.
• Experience with various Change management tools like ServiceNow, HPSM, Cherwell.
• Providing 24/7 technical support to Production environments on 365 days-rotation period.
• Experience in configuration and testing Disaster Recovery Site using ACSR cold replication, Storix and HP-Data protector tools.
• Expertise hands on experience in shell script automation and Python 3.x Programming.

TECHNICAL SKILLS

Hardware: SUN Enterprise- E 5000/5500/6500 , SUNFIRE 3800/4800/6800 , E10K/15K Series Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, IBM e-Server Regatta P690, P570, RS6000, IBM/HP/DELL Blade Servers, SAN(EMC, Hitachi), NAS (Netapp),Dell IDRAC’s 7 gen

OS: Solaris 10/9, HP-UX (11.00, 11.11, 11.23, 11.31), IBM AIX (5.1, 5.3), Red Hat Linux (RHEL 4/5/6,7), Windows NT /2003/vista

Naming Services: DNS, NIS, and NIS+

Backup Management: Veritas Netbackup 4.x/5.x/6.x, Ufsdump, ufsrestore, tar, dd, cpio,TSM

Script Languages: Shell scripts, Python

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS, Isilon

Cluster: Veritas Cluster Server (VCS), Sun Cluster, HP Service Guard, AIX HACMP, Redhat cluster

RDBMS: Postgres, Oracle, MS SQL Server, mariadb

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET, UDP & RIP, DNS, WINS, DHCP.

Configuration Management Languages: Puppet, Ansible

Cloud Providers: Azure,AWS

Programming languages: Python, React, Django

PROFESSIONAL EXPERIENCE

Confidential, Houston,TX

Linux/Devops Engineer

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Enterprise Linux environments including RHEL 6.x,7.x,8.x. in azure Cloud Subscription.
• Expertise working as Redhat Linux SME dealing with various troubleshooting issues to automation of environments
• Good expertise in dealing with various Cloud services in Azure including Storage, virtualization services, VM’s images and app services
• Good expertise in leveraging ansible to create customized opensource CMDB tool iTop to maintain server records.
• Good expertise in creating automation with shell/python scripts and creating function calls with in ansible playbooks
• Good expertise in maintaining various infrastructure key services like backup’s, alerts which was automated by ansible
• SME level expertise in RedHat linux primarily troubleshooting Level 3 issues including performance issues, server related issues
• Good expertise working with other OS like hp-ux and AIX
• Good expertise working with Azure Public cloud services like ADF (datafactory pipelines), ADO(azure devops), WAG(web application gateway) services
• Good expertise implementing certificate management using internal certs and also external third party certs
• Expertise in automating Linux environments ranging from enterprise versions to opens source Linux distributions likes centos, fedeora, ubuntu
• Expertise in writing python scripts to automate infrastructure and integrate with existing ansible modules
• Managed Docker orchestration and Docker containerization using Kubernetes.
• Used Kubernetes to orchestrate the deployment, scaling and management of Docker Containers.
• Expertise in supporting various cloud services like azure, aws and also openstack components
• Expertise in maintaining every component of infrastructure ranging from Active directory to OS level maintenance
• Expertise working with various monitoring tools and configuration setup like Nagios, solar winds
• Expertise in following change request procedures to implement changes in Prod environments
• Expertise in infrastructure automation using various languages, tools like shells scripts, python, ansible modules, puppet for configuration management setup

Confidential, Bloomington,IL

Linux System Engineer

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of RHEL 6.x on existing servers.
• Performed automated installations of Operating System using kickstart for Linux.
• Responsible for building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Created source profiles and imported to enterprise server that will deploy to all nodes desired.
• Configuring and managing the SSH, SSL, NFS, FTP, SAMBA, SMTP and DHCP Servers on Linux.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Good expertise automating linux infrastructure using configuration management puppet, ansible. This includes rolling out auto-updates and fixing security vulnerabilities from time to time.
• Good expertise in creating ansible management modules that handles servers day-to-day activities including filesystem creation, performance metrics capture.
• Good experience in creating custom server hardening selinux targets rules that trigger and logs to central log messages when process are denied.
• Used puppet manifests to manage Server’s sudoer’s file across 1000’s of servers.
• Worked on the configuration and troubleshooting of printers using CUPS(Common Unix Printing System) and HP Spooler.
• Worked on Science logic Monitoring tool to manage filesystem alerts or failures in pinging servers.
• Worked on Servicenow which is change management tool that manages changes made to server environment.
• Performed all the Storage Operations like adding Devices, BCVs mounting BCVs on DR host.
• Worked on trouble shooting various multipath, powerpath issues.
• Resolved several EMC storage related issues like director failure, VHBA addition on Host side.
• Performed NIC Tuning by increasing its TCP, integrating with SAP packet analyzer tools to improve bandwidth and latency .
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Installed Operating System on Solaris and Linux servers and blades over the network.
• Performed all the SAN related work using EMC symmetrix, SRDF and BCVs.
• Built servers according to standards specified as per individual applications
• Built virtualized Linux servers on ESX and blade servers to host multiple applications on same chassis across different server hosts
• Set up Linux servers for iSCSI LUN boot instead of using local hard disks
• Set up Linux servers for LAMP implementations and readiness increasing scope for linux security.
• Created Filesystems from local storage as well as NFS partitions for application portability
• Applied patches and packages on Linux servers using rpm RedHat Package Manager and yum tools
• Ensured automatic startup of different services by using chkconfig.
• Configured Opsware on the servers for event tracking
• Implemented virtual, integrated, management and proxy IPs on the machines to serve different purposes
• Used DHCP static IP methods for assigning IP addresses to list of group users.
• Installed and configured Apache, MySQL and PHP products on the Linux servers.
• Installation and configuration of Redhat and Veritas Volume Manager, File System.
• Administered and supported the SAP Production, Quality and development systems in a 24x7 in an environment consisting of Oracle 9i, Sun Solaris 9 and EMC Symmetrix SAN Storage.
• Providing day-to-day user administration like adding/deleting users and managing users queries. Shell programming for routine administration tasks. Analyzing & monitoring system performance through various system tools such as netstat, iostat
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Creation and scheduling of Cron Jobs such as for Backup, System Monitoring and removal of unnecessary files
• Performed automated installations of Operating System using Jumpstart for Solaris and kickstart for Linux.
• Develop, Maintain, update various script for services (start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Updated & Running the various source code for migration & updating follow-up the release management.
• User, Group, Package administration, various repetitive activities across Linux Environment.
• Configured NIS Master and Slave servers and NIS clients.
• Engaging and working with different vendors to determine problem resolution and root cause of hardware problems

Environment: RHEL 5.x,6.x, Windows NT, Ultra Enterprise 2/1 Servers,SAN, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC M4K,M5K,M8k servers, SPARCstation 10, Sun Sparc Ultra 1,5,10, ZFS, QFS and Veritas File System 3.0, clustered nodes.

Confidential, Atlanta

Unix Administrator

Responsibilities:

• Installation of RHEL (Red Hat Enterprise Linux) 5.X, 6.X, 7.X administrator and server maintenance
• Using and configuring Red Hat Satellite server, Yum repositories and Troubleshooting activities.
• Experience in Installation, configuration, patching, support to application and web server.
• Administering Open stack environment. Built Solaris servers, including LDOMs and Zones.
• Worked with backend multi-TB storage systems such as EMC, Netapps, and Hitachi using Volume Managers such as LVM, ZFS/ZPOOL, and VERITAS Volume Manager.
• Providing On call support to production environment.
• Create live active production scripts using shell/python to automate infrastructure system tasks like patching.
• Numerous LINUX Debian file and print servers using samba throughout both campuses
• Thirty workstation classroom and training using Debian LINUX.
• Primary SME for security hardening of servers - providing solutions to pass internal and external audits for SAS70, PCI, HIPAA compliance for multi-OS platforms (Solaris, LINUX, AIX)
• Worked as a primary onsite Admin for the Data Center production servers and Data Center migration for consolidation and tech refreshes.
• Worked on AIX 5.3, 6.1, 6.2, with LPAR builds using NIM servers via HMCs.
• Created Network VLANS, adaptors, and virtual SCSI disks using NIM servers
• Created service groups and failover groups using HACMP in multimode clustered environment
• Worked in Java and programming in JavaScript, J2EE, JSR, JSF, AJAX, jQuery, JSON, RIDC.
• Implemented Java based APIs to get health of NAS Storage Arrays on large scale.
• Support of Applications like Apache Tomcat and Java based applications running on Linux machines for multiple clients.
• Familiar with Hardware Management Console (HMC), Integrated Virtualization Manager (IVM), and IBM Systems Director Management Console (SDMC), VMware VSphere
• Monitoring & Maintaining and giving Support to Operators regarding the EOD(End of Day) and BOD (Beginning of Day) which is operated by Operator (CMS Team)
• Removing the Locks of user id for the user/Bankers in Collection & disbursement server for avoiding the system in hang position using Simple queries and UNIX commands.
• Using FIS in house tools - Change Management System (CMS / also known as CASE) for ticketing needs and STAR for inventory management.
• Handling the UBS (Universal Banking Solution) in which mainly Three Modules are there FCC( Corporate A/c's), FCR(Retail A/c's) and GL (General Ledger of Corporate A/c).
• Troubleshooting and fixing issues discovered by monitoring tools - Big Sister, Tivoli, Hubble