SUMMARY

• Over 10 years of specialized experience in Linux/Unix System Administration and Application support working on Red Hat 7/6/5,Oracle Linux 5, 6, 7 CentOS, SUN/Oracle SOLARIS (10, 9,8), IBM AIX, HP - UX, Windows, VMWare ESXI, Netapp Storage administration and AWS Administration.
• Provide system support for Linux/Unix Physical & Virtual servers including routine maintenance, patching, system backups, restores, software and hardware firmware upgrades.
• Worked on SUN Solaris SPARC & X86 platforms, T Series blade serversand modular Sun chassis.
• Continuous Integration / Deployment experience using tools such as GIT,Bitbucket, Jenkins, Puppet& Chef.
• Experience with Red HatSpacewalk Satellite server for Linux Patchingand kickstart installation.
• Expertise in Configuring, Maintaining and Troubleshooting server’s hardware that includes UCS B-Series blade servers, C-Series rack-mounted servers and managing them using Cisco UCS Manager.
• Experience in storage technologies such as EMC and NetApp.
• Experience with Web Servers & Databases such as Apache, Tomcat and ISS, Nginx, MySQL, PostgreSQL & Oracle 10g.
• Expertise in Oracle ODA,Exadata, Exalogicand SUN hardware.
• Experience with LDAP/Kerberos autantication systems such as FreeIPA, Red Hat ldMand AD.
• Build and installations of middle ware products like Tuxedo and WebLogic
• Build customized kick-start scripts for Linux and Unix O/S installation.
• Expert in Linux Performance monitoring, kernel tuning, & Load balancing.
• Worked on middleware products like WebLogic, tuxedo and IDM.
• Experience in configuration of NIS, NIS+, DNS, DHCP, CIFS, NFS, LDAP, & SAMBA.
• Expertise to handle tasks in RedHat Linux includes upgrading RPMS using YUM, kernel, configure SAN Disks, Multi pathing and LVM, SVM file system.
• Worked on Netapp storages like FAS 8k/6k/3k and oracle ZFS.
• Experience in using various network protocols like HTTP, UDP, POP, FTP, TCP/IP, and SMTP.
• Extensive experience with Nagios monitoring tool.
• Experience in writing Bash and python scripts.
• Knowledge of Routers, Switches, VLAN, Hubs, Firewalls, LAN, Internet, DMZ Network.
• DevOps experience in AWS Cloud infrastructure utilizing CloudFormation, VPS, EC2, ELB, RDS, CloudWatch, S3, SNS, SQS, Terraform, Autoscalingand Route 53.
• Experience with repositories such as GitHub, Artifactory, and Docker.
• Experience using ServiceNow for Change/Incident Management.
• Dedicated to excellent customer service. Self-direction, leadership and problem-solving skills. Ability to prioritize and work proactively. Strong communication, documentation and teamwork skills.
• Experience supporting 7x24 production computing environments and providing on-call and weekend support

TECHNICAL SKILLS

Operating Systems: RHEL/Oracle Linux 7/6/5, CentOS, Ubuntu 16/14, Fedora 20/17, Oracle/Sun Solairs, 10/9, HP-UX, Mac OS X, Windows 2003/2008/2012/ VISTA/wind7.

Hardware: Dell PowerEdge M820, M915, M610, M630, R630, R920, R720, Sun Fire Servers T6300, T6340, X6250, V245,420R, V440, V880. SPAARC T5, T4, Sun Fire 6800, Oracle Exadata,Exalogic,Sun Chassis 6000 Series, Dell DX, AS 400, Z9, Cisco UCS 5108 Blade Servers.torage NetApp filers (FAS6040, FAS 3070/3040/3020 , FAS2050) Isilon (S200 & IQ 6000x) series,EMC Symmetrix VMAX

Web Servers: Apache (httpd), apache-tomcat, jboss, weblogic. Tomcat, WebSphere, Apache Http Server, IIS 4.0/5.0, MQ Series.

Tools: Nagios Monitoring, Foreman-Puppet, Katello, Chef, Spacewalk, FreeIPA, CFEngine, SVN, GIT, Jenkins, Send Mail, EMC, Symmetric, Syslog Server.

Languages: Python, Shell scripting Ksh& Bourn Shell, JavaScript, HTML, JAVA, C

Databases: MySQL, PostgreSQL, Oracle DB 10g.

Networking: NIS, NFS, AutoFS, DNS. TCP/IP, DNS, DHCP, Cisco Routers/Switches, TLS/SSL.

File Systems: EXT4, EXT2, EXT3, ZFS, UFS, VxFS, NFSandLVM

Other Skills: VMware, VCenter Server, VMware Server, Solaris Zones, IBM tape libraries.

WORK EXPERIENCE:

Confidential

Sr. Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Administration of RHEL and Oracle Linux CentOS,AIX, Solaris 10&Windowson Physical and Virtual Machines.
• Create VMs, perform cloning, create and delete snapshots, add & remove hardware resources.
• Support applications/tools such as Jenkins, Git, Extra view& Confluence in Linux environment.
• Work on automation of AWS infrastructure via Terraform and Jenkins.
• Set up Spacewalk Satellite server for software updates, Linux patching, and PXE installation.
• Update FW on Cisco UCS Manager, Chassis me/0 Modules, and Fabric Interconnects.
• Manage the entire infrastructure with Puppet by setting up Foreman Puppet master server.
• Create Puppet modules& write manifests to manage Puppet client’s configuration and automation.
• Administer and configure F/S like ext2, ext3,ext4xfs, zfs, ufs, JFS, OCFS.
• Create and modify scripts (bash, Perl, python) and cron to automate administration of daily duties.
• Configure and implement different RAID levels,LVM and Load Balancing.
• Install and configure VPN technologies such as IPsec v1, IPsec v2 and SSLVPN.
• Monitor systems and resolve performance issues.
• Troubleshoot Linux network security related issues, capturing packets using tools such as Iptables, firewall, TCP wrappers, NMAP.
• Work on creating & maintain new NFS/CIFS shares and iSCSI LUNS.
• Install and configure Apache & Tomcat running on Linux webservers.
• Configured LDAP autantication, Single Sign-On (SS0),NFS, AUTOFS.
• Work on building. Configuring, and managing Solaris servers in a zoned/virtualized environment.
• Manage SSL s. Sign CSR’s ( Signing Requests) and install & configure SSL s on production webservers.
• Use LDAP, Active directory (AD) and NIS for user autantication.
• Work on SAN technology. Create Volumes, Snapmirror, qtree on the Data ONTAP O/S.
• Work on migrating Solaris zones from one global host to another using ZFS F/S snapshot.
• Set up and configure Apache-PHP, Tomcat, MySQL, &Send-mail.
• Configured & Implemented DNS, DHCP, NFS, SAMBA to support cross platform file sharing.
• Installed and configured VMware ESX server instances for virtual server setup and deployment.
• Installed/Configured Solaris/Linux system - Firewall, IDS, VPN Server, VNC, TWiki, OpenLDAP.
• Use Nagios monitoring for server uptime, alerts, and troubleshoot issues.
• Day to day resolution on Linux/Solaris based issues through IT ServiceNow ticketing system.

Environment: RHEL, Oracle Linux,CentOS, Ubuntu, SUSE, Windows 2008,2012, Solaris 10/9, VMware Virtual Center, vSphere 5.x/6.x, Cisco UCS, NFS, TCP/IP, DNS, SMTP, NIS, FreeIPA, PostgreSQL, MySQL, Oracledb, Puppet, Chef, Red hat satellite, Jenkins, Git, Docker, Nagios, ServiceNow, AWS, EC2, ELB, S3, VPC, Auto Scale, Relational Databases Services (RDS), CloudWatch, CloudFront, Router 53.

Confidential

Senior Systems Administrator

Responsibilities:

• Installation and configuration of Redhat/Oracle Linux 5/6 and Solaris/Oracle 8/9/10 and AIXservers in which Virtual Machines are built using VMware templates and Physical servers using Kickstart process.
• Providing 24/7 support.
• Installing HBA drivers, firmware and Powerpath software in Production, Development and QA servers
• Managing data backup and recovery operations using Veritas Netbackup
• Configured volume groups and logical volumes, extended logical volumes for file system growth using Logical Volume Manager (LVM) commands.
• Performing online addition of LUNS to the servers for provisioning disk space, and resizing file systems
• Create logical volumes, extending file systems using LVM.
• Experience in writing Bash/Python scripts.
• Handled servers Go-Live Audit, Security compliance, and pre-scan process for RHEL and Solaris Operating systems as per PCI standards
• Worked closely with Oracle DBA, storage, network and applications teams on performance and network bottleneck issues.
• Worked with different hardware vendors like Oracle, HP, Dell etc. for faulty hardware replacements/issues.
• Assisted Oracle DBA’s on storage server performance issues (ODA, Exadata)
• Worked extensively with Network File System (NFS) for storage
• Scanning newly built servers for security and non-compliance issues using BladeLogic and worked on remediating the failed servers before sending them to operational.
• Creating the Change Management process for implementing any configuration changes and patching on the servers
• Managed cluster activities on IBM HACMP and veritas cluster.
• Worked closely with the SAN team to provision and configure SAN storage on Solaris/Linux servers and provide appropriate access to groups and users. Also, worked on SAN cross server migration.
• Involved Install and configuration of middleware products tuxedo and weblogic on Exalogic.
• Worked on FreeNAS Storage Operating system with ZFS to protect,store and backup data.
• Analyzing UNIX Vulnerabilities reported from Qualys Guard security tool and remediating the vulnerabilities.
• Installation of Trend Micro on Linux and Solaris servers for securing ports
• Vaulting Unix Service accounts in TPAM - The Privileged Appliance and Modules (Previously eDMZ PAR). TPAM is the centralized location for storing accounts and their passwords and can only be retrieved upon approvals.

Environment: Solaris, Linux,Ubuntu, Oracle Exadata, NFS, LVM, WebSphere, WebLogic, Oracle, VERITAS Cluster, SAN/NAS Storage, GIT, Jenkins, ServiceNow, VMware ESXi, FreeNAS, ZFS.

Confidential

Storage Delivery Specialist

Responsibilities:

• TEMPEffectively manage and troubleshoot the storage infrastructure of the firm's NAS storage
• Handling Migrations projects (7mode to 7mode and 7mode to CDOT).
• Worked on NAS storage environment like Oracle ZFS/Netapp and Isilon.
• Preparing and implementing the Storage Disaster Recovery tasks for the LOB
• Creating and executing break/fix changes.
• Day to day incident, change and root cause management
• Provision the storage and troubleshoot cifs and nfs share access issues
• Participating in DR test and creating implementation and test plan
• Handling Snapmirror and snapvault LAG issues.
• Handling cluster failover and give backs.
• Monitoring the current storage usage on the storage devices to determine the future storage needs and providing the recommendations for enhancing the current environment.
• Perform storage capacity remediation tasks which will halp in reclaiming unused stale storage and use that space TEMPeffectively,Plan and execute Ontap upgrades.

Environment: NetApp filers (FAS6040, FAS 3070/3040/3020 , FAS2050) Isilon (S200 & IQ 6000x) series, IBM N series N3XXX, N5XXX, Flash Systems 800/900 and Expertise in Data ONTAP 7.5.1p3, 8.0(7-mode), 8.1.2(C-mode).

Confidential

Senior Systems Engineer

Responsibilities:

• Installation and configuration of Redhat Linux 5/6 and Solaris 8/9/10 and AIX servers.
• Provide Hardware and Software support for SUN Enterprise Servers including SPARC & x86.
• Administration of Kernel upgrades on production, development & QA Linux & Solaris Servers.
• Support Servers & Applications on SUNSolaris 9/10, Red Hat Linux5, 6.
• Configuring and monitoring Disk mirroring, striping using LVM.
• Creating, Installation and administration of Red Hat Virtual Machines in VMware Environment.
• Configured LDAP, NTP, and iptables on production servers.
• Configured bonded network interface cards for active failover.
• Installing, configuring & administrating Global/Sparse Zones on Solaris 10 Servers.
• Set up Network Protocols, Network File Systems (NFS) & Network Information Services (NIS).
• Configured Solaris JUMPSTART server for O/S installation.
• Expertise in the setting-up and administration of VERITAS Volume Manager and Clusters.
• Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP & SNMP
• Responsible for Hardware upgrades such as Server Memory DIMMs, CPUs and Mother Boards.
• Maintained DNS, LDAP Servers, Configured NIM, NFS, NIS and standardization of all the systems.
• Design, develop and maintains systems configuration and Controls user access and passwords.
• Provides accurate and timely information on status of project tasks to keep management informed.
• Oracle9i, 10g installations and database creation on Sun cluster environment.
• Creating Snap mirror, Snap vault relationships and monitoring the data replication & troubleshooting on Netapp filers.
• Netapp ONTAP upgradations.
• Creating NFS shares, deleting modifying the access and troubleshooting on NFS issues.
• Creating backups using snap vault technology and troubleshooting.
• Performing Netapp cluster activities like give back, take over depending on the node availability.
• Implementation of Snap mirror and Snapvault for DR and backup solutions

Environment: AIX, Solaris 10/9, RHEL 6, CentOS, Oracle Linux, LVM, Solaris Global/Non-global Zones, ZFS, UFS, VERTITAS,SUNCluster, DNS, LDAP, NFS, NIS. NETAPP FAS 6k/3k/2k Series.

Confidential

Systems Engineer

Responsibilities:

• Build AIX,Solaris and Linux servers and configures networks; both physical and virtual.
• Responsible for Hardware upgrades such as Server Memory DIMMs, CPUs and Mother Boards.
• Configured and Managed Application High Availability using HACMP Cluster.
• Managed File systems using LVM, VXVM, SVM, NFS.
• Managed cluster activities - IBM HACMP, Veritas cluster
• Monitored System Performance of Virtual memory, System events, Swapping, Disk utilization, CPU utilization by running scripts.
• Proactively identify areas of improvement and halp streamline operations.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Ensured Performance, Scalability, Availability and Reliability of servers as agreed.
• Documented solutions for any issues that has not been discovered previously.
• Installing HBA drivers, firmware and EMC Powerpath
• Upgrading Solaris kernel and Linux kernel and applying necessary patches on a regular process
• Supporting physical activities in data center that involves disk replacements, failed hardware replacements by co-ordinating with vendor and rack and stack.
• Handled servers Go-Live Audit, Security compliance, and pre-scan process for RHEL and Solaris Operating systems as per PCI standards
• Tuning kernel parameters according to application requirement

Environment: Solaris 9/8, RHEL 5,6, AIX, LVM, UFS, VERTITAS, DNS, LDAP, NFS, NIS.