SUMMARY

• Over 7+ experience as system administrator on DevOps, RedHat EL 4.x, 5.x, 6.x, Debian, Ubuntu, CentOS 4.x, 5x, FreeBSD, Solaris 8,9, 10, 11, HP - UX, AIX and Windows server 2000/03/08 environment.
• Extensive experience in Amazon Web Services (AWS) and its services, maintaining and improving infrastructure, split between physical data centers and AWS.
• Experience in using AWS EC2, S3, AWS Route 53, AWS CloudTrail, AWS CloudWatch, AWS Glacier, AWS Identity and Access Management, AWS Elastic Load Balancers (ELB).
• Implemented AWS cloud deployment wif Puppet and Ansible using web services.
• Designed and Developed new back-end services, maintaining and expanding our AWS infrastructure. Ability to document strategies and designs and present to these idea to management wif cost-benefit analysis.
• Highly experienced in configuring servers like DHCP, DNS, LDAP, FTP, SFTP, Web Server (Apache), App server (Tomcat, WAS), Mail server (Postfix, Sendmail, Dovecot), Proxy server, NFS, NIS and Samba.
• Extensive experience wif RAID using Volume Management Software like Logical Volume Manager (LVM), Veritas Volume Manager (VVM), Solaris Volume Manager (SVM).
• Experience of Clustered environments (RHEL cluster suite, VCS, HACMP, GPFS)
• Experience wif KVM, Oracle VM and VMware virtualization platforms.
• Experienced in implementing and administering VMs using VMware ESX 3.1 and vSphere 4.x and vCenter and building KVM Hypervisor. Also worked wif Solaris 10, 11 LDOMs and zones to implement virtualized environments in the Solaris servers.
• Experience wif Cloud computing platform OpenStack for deployment and management of virtual machines.
• Extensive experience wif Kickstart in RedHat, Jumpstart in Solaris, Ignite in HP-UX.
• Security management like performing security health checks as per policies/procedures, patching the servers based on the advisories for the applications and operating systems.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Experience in installation and configuration of Apache 1.3.x, Tomcat, WebLogic 9, 10, and JBoss.
• Experience in deploying Apache/Tomcat applications wif automatic configuration management tool Puppet and Chef.
• Configured and managed Apache Web Server on Linux for web based applications using REST/SOAP, Apache and Weblogic.
• Experience wif Identity and Access Management system across all the enterprise platforms on the user, services, applications and network levels wif access control, digital certificates, password management, security tokens, network protocols and single sign-on, etc.
• Proficient in installing, and managing central Syslog server for managing server logs, used Logrotate for clearing old logs.
• Installation of IBM Websphere Messaging Queue(MQ) application and Qpasa monitoring tool and creating Queue managers and queues.
• Experience in installation, configuration and administration of Oracle 9g/10g/11g database.
• Hands-on experience in diagnosing, troubleshooting various networking, hardware & Linux/ UNIX server’s services issues and performing preventive maintenance.
• Experienced in writing / modifying shell scripts for process automation of systems, applications, backups etc. using Bash scripting, Perl and Python.
• Experience in Active Directory, GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), FTP, Terminal Server, Microsoft Clustering and Exchange Mail Server in Windows based server environment.
• Experienced in Installation of Operating Systems, Packages and Patches, adding peripherals, maintaining user accounts, System Security maintenance, backup/recovery, performance tuning, troubleshooting at various levels etc.
• Extensive experience wif Software Configuration Management, Build/Release Managementusing Source Depot, CVS, Subversion, Git, etc.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Experience wif Project tracking and Ticketing tool JIRA and Confluence.
• A quick learner wif excellent problem-solving and interpersonal skills.
• Self motivated, goal-oriented, good team player, and highly adaptive to changes.
• Self starter, self motivator and quick learner. Excellent interpersonal communication skills. Strong problem solving skills. Ability to work in a team or on an individual basis.

TECHNICAL SKILLS

Operating System: Linux (RHEL, Debian, CentOS, Suse, Ubuntu), FreeBSD, VMWARE ESX, Solaris, MS Windows server.

Hardware: Sun Enterprise E 5000/5500/6500 , Sun Fire 3800/4800/6800 , E10K/15 Series server, T Series, M Series Servers, HP-9000, rx8640, rp7420, rp8420, N-Class, L-Class, D-Class, K-Class, Oracle RAC/ASM,EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250, X6270.

Third Party Tools: Veritas Volume Manager, Logical Volume Manager, RAID, Veritas Cluster, Redhat Cluster, VMware ESXi Technologies, Puppet, Jenkins, GIT, AWS EC2, AWS Glacier, AWS Identity and Access Management, AWS CloudTrail and AWS CloudWatch, AWS LoadBalancer, vSphere 4.0, OpenStack, Fuel, Puppet, Chef, Websphere MQ, QPasa monitoring tool, Tumbleweed/Axway, DemonAgent automation, Filezilla, NFX client

Application/WebServers: IBM Websphere, WebLogic, Tomcat application server, Apache web server.

Protocols and Services: TCP/IP, TELNET, FTP, SSH, SCP, ARP, DHCP, SMTP, TFTP, NFS, DNS, LDAP, NIS, Network Essentials-OSI, LAN/WAN, Switches, Hubs, Fiber Channel and iSCSI.

Automation/Scripting: Kickstart (Linux), Jumpstart (Solaris), Bash / Korn / Bourne, Perl, Python

Databases & Languages: Oracle 8i, 9i,10g,11g, MySQL, SQL Server, PL/SQL, C, C++, JavaScript, PHP

PROFESSIONAL EXPERIENCE

Confidential, Nashville, TN

Linux/DevOps System Administrator

Responsibilities:

• Design and run the migration project of multiple batch applications platform from Solaris to Linux shared batch servers.
• Support application teams in the migration process and guide them throughout the whole process of getting NAS storage, mount them, create load balancer, create filesystems and user accounts.
• Support application teams wif Autosys job changes and deployment tasks as well as assist in hardware evaluation, infrastructure builds, integration and deployment of new software and databases as requested by application teams.
• Configure file system protocols like SFTP and FTP as requested by application teams and monitor and maintain the NIS, DNS, NFS and mail servers (Postfix, Sendmail, IMAP, POP)
• Set up and maintenance of Linux based firewall and network distribution using Iptables and Squid.
• Design and involve in migration of Mainframe trigger jobs from Autosys servers to new batch servers.
• Write Bash scripts and Perl to automate the processes and perform Kickstart and Jumpstart automatic installation on Linux and Unix servers.
• Perform tasks related to managing Disk Storage using Logical Volume Manager, SVM and VVM commands to create, grow, and/or mirror new volumes and file systems.
• Administered AWS and Linux server automation and utilized Amazon Web Services (AWS) for cloud automation.
• Implemented AWS cloud deployment wif puppet using web services.
• Experience in multi region replication, AWS Identity and Access management for user management, AWS Glacier for backing archive files, AWS CloudWatch for monitoring Resources and Applications and AWS CloudTrail to track user activity and API usage.
• Experience in Elastic Load Balancing (ELB) for region wide load balancer, ELB EC2 health checks and Autoscaling of EC2 instances on demand.
• Designed and developed new back-end services, maintaining and expanding our AWS infrastructure, and providing mentorship to others on my term.
• Maintained and Improved server infrastructure, split between physical data centers and AWS. Also provided 24/7 on-call support.
• Monitor system processes, CPU loads, Memory usage, disk space and daily logs and resolve the issues in case.
• Administer and provide daily support, backup and recovery, data storage, system access and security, etc.
• Deploy applications wif Automation and Configuration management tool Chef.
• Worked wif OpenStack tool Fuel for automation of deployment and management of virtual machines in large scale on datacenters.
• Configuration/management of Web Server for web based applications using REST/SOAP.
• Experience wif Subversion, VCS and Git as version control for all scripts.
• Deployed distributed Jenkins environment for continuous integration/builds. All builds output rpm packages as artifacts.
• Involve in migration of Websphere MQ applications from distributed to mainframe platform and also support shared infra MQ platform.
• Install Websphere MQ software, create Queue Managers and Queues and configure them.
• Install QPasa monitoring software on servers and DemonAgent to automate the process of compliance reporting for audit purpose.
• Manage SFTP file transfer application Tumbleweed/Axway and supported the messaging applications hosted on them and worked on remediation of POODLE vulnerability in SSLv3 connections.
• Security management like performing security health checks as per policies/procedures, patching the servers for the applications and operating systems.
• Worked wif Ticketing and Project tracking tools JIRA and Confluence

Environment: Red Hat Enterprise Linux 6.x, Sun Solaris 10/11, Autosys, LVM, SVM, VVM, AWS, Chef, Fuel OpenStack, SOAP/REST, Git, Subversion, Jenkins, IBM Websphere MQ, QPasa monitoring tool, Tumbleweed/Axway, Oracle 11g, JIRA, Confluence, Filezilla, NFX client, Bash shell scripting, Perl.

Confidential, Fort Worth, Texas

Linux System Administrator

Responsibilities:

• Building Physical as well as Virtual (VMware) Servers.
• Mass Build of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
• Creating and cloning virtual machines in VMware environment using Virtual Infrastructure client 3.5 and Vsphere 4.0.
• Worked extensively wif Network File System (NFS) for storage.
• Creating logical volumes, extending the filesystems using LVM and SVM.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Patch Management, Package Installation/Upgrades and Kernel upgrades
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Administered Microsoft’s cloud-based Azure Active Directory (AAD) as the identity and access management across the platforms.
• Work wif server automation and configuration management tool Chef and Puppet.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Installed and configured mail servers such as Postfix and Sendmail as well as Windows Exchange server.
• Writing shell scripts for Automated Back- ups and Cron Jobs.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Maintained proper documentation of all the activities carried out during the project
• Worked wif ticketing tool JIRA.

Environment: Red Hat Enterprise Linux 4.x,5.x, Sun Solaris 8,9,10, VERITAS Cluster Server, AAD, Puppet, Chef, Veritas Volume Manager, JIRA, ZFS, Oracle 11g, HP UX, MS Windows Server, Exchange server, Bash scripting, Perl

Confidential, IA

Linux Administrator

Responsibilities:

• Patching of RHEL5, Ubuntu and Solaris 8, 9, 10 servers for EMC Powerpath Upgrade for VMAX migration.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Responsible for Building of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Documented the standard procedure for installation and deployment of VMAX Migration and logical volume manager and Solaris Volume manager.
• Installation, configuration, support and security implementation on following services:DHCP, SSH, SCP.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• User administration on Sun Solaris and RHEL systems, HP-UX machines, management & archiving.
• Installations of HP Open view, monitoring tool, in more TEMPthan 300 servers.
• Worked wif monitoring tools as Nagios and HP Openview.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 4.0 and building KVM Hypervisors also Worked in clustering techniques to ensure high availability and GFS deployment.
• Worked wif DBA team for database performance issues, network related issue on Linux / Unix Servers and wif vendors for hardware related issues.
• Expanded file system using Solaris Volume Manager (SVM) in the fly in Solaris boxes.
• Managed and upgraded UNIX’s server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux and Solaris servers.
• Configured and maintained mail servers like Sendmail, Postifx and Dovecot.
• Supported the backup environments running VERITAS Net Backup 6.5.
• Responsible for setting cron jobs on the servers using Bash shell scripting as well as Perl
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Participated in on-call rotation to provide 24X7 technical supports.

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x, Ubuntu, Sun Solaris 8, 9, 10, VERITAS Volume Manager, SVM, ZFS, Oracle 11g, Samba, Oracle RAC/ASM,EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250, X6270.

Confidential - Tampa, Florida

Unix/Linux Administrator

Responsibilities:

• Installation and Configuration of Redhat ES, CentOS, Solaris 8, 9, 10, SLES 9, 10 and Windows servers.
• Installation, configuration and management of Apache and Tomcat servers.
• Performing Nessus Scan on quarterly basis to scan for vulnerabilities in Web and Application servers.
• Applying patches to fix the holes that are found during the quarterly scan basis using Nessus scan.
• Upgraded and maintained servers, operating Systems and patches.
• Install/configure/maintain the Linux /Solaris servers, NIS, DNS, NFS, Mailing List, Sendmail, apache, ftp, sshd.
• Managed NetaPP FAS 920 Storage and implemented RAID.
• Configuring and managing Novell HA cluster in SLES 10.
• Configuring and optimizing open-iSCSI in RHES for SAN using iOmega technology.
• Install host firewall IPTables for Redhat Linux.
• Installation, configuration Active Directory, Group Policy, Migrations, Security GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), FTP, Terminal Server, Microsoft Clustering and Exchange Mail Server in Windows based server environment.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Performed TCP/IP, DNS and DHCP administration.
• Setting up Oracle 10g server in Linux/Unix environment.
• Supported Oracle DBA in the implementation of Oracle 9i RAC.
• Installed and monitored administering and monitoring tools such as Webmin and Nagios.
• Maintained and monitored all of company's servers’ operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Performed routine LVM tasks like replacing failed drives, adding new volume groups, extending volume groups/LVM/file system, exporting and importing volume group for hardware migration.
• Administered Backup and Restore operations using Veritas NetBackup 5.1.
• Monitored and fine tuning system and network performance for server environments running Redhat Linux, Solaris.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.

Environment: Red Hat Enterprise Linux 4.x,5.x, CentOS, Debian, Cisco, Veritas Cluster Server, Oracle 9i, MS Windows 98/2000/NT/XP, Oracle RAC/ASM, Porta-one soft switch, MS Windows Server 2003, 2008.