Objective I have 13 years of rich work experience as a Lead Unix Admin, excellent communication skills, leadership qualities, team builder, enthusiastic initiator, self-motivated, and a problem solver, seeking a Lead Linux infrastructure/landscape Administrator position with a desire to achieve outstanding results. Currently managing more than 500 servers in over 19 Datacenters hosting servers of different linux flavors.

Skills

• Linux Red Hat, SLES, Debian, Fedora, Solaris,HP-UX, AIX
• Databases MS SQL, Oracle-9i ,10g, 11g, Oracle-RAC, MySQL, Access
• Tools Tomcat, JBoss Segue SILK Testing tool, Rational Rose, CVS, ClearCase,
• MS-VSS, Remedy, RSA Remote VPN, Cisco Anyconnect SSL VPN, VMware ESX, EMULEX HBA, Brocade San-Surfer, Capistrano, Puppet, Splunk, MRTG. Vintella Auth Services-VAS, Akamai, F5 load Balancer.
• Monitoring tools MRTG, Nagios, Sitescope, Zabbix, Pingdom, Groundworks Splunk,
• Centreon.
• EMC suite Navisphere Manager Storage array GUI , Navisphere
• navicli Storage array CLI , Mirror-view storage mirroring , Snap-view Online data backup . SAN-COPY Data Transfer tool , Incremental SANCopy Incremental Data Transfer tool , EMC PowerPath Failover utility
• Languages Basic, Fortran, Pascal, Bash, Perl, Shell scripting
• Networking TCP/IP, NFS, NIS DNS, FTP, SSH, DHCP
• O.S. Red Hat Linux, SuSE Linux SLES, Solaris, HP-UX, AIX, Debian, Windows
• SAN Switches Brocade-16 32 ports, Mc. Data-16 32 ports
• Storage Arrays EMC/CLARiiON FC4700, FC4500, 5500, 5400, 4500, CX400, CX600,
• CX800, CX450, CX650, CX700, AX100, AX150, NetApp NAS - Data ONTAP ver 7.2.4
• CLOUD Tech Worked on AWS - Amazon CLOUD EC2, IBM Cloud and SAP Cloud

Work Experience

Confidential

Sr. Linux Administrator

I was hired to migrate the entire SAP e-sourcing landscape from windows to linux infrastructure. Compiled customized kernel on these servers, created Jboss boot scripts and wrapper scripts to write to a customized jboss-log file. Compiled Apache to use limited modules and created boot scripts for apache. Setup monitoring on these servers and set logrotation policy. Created linux document repository to help the team members with mastering basic linux and service restart commands. Also trained and setup an offshore support team in Bangalore as part of our 24x7 L1 support over a period of 2 months.

Reponsibilities included

• Setting up Suse Linux SLES servers to be used as Application web server for SAP e-sourcing MM module. Administering over 200 servers in 7 datacenters in EMEA and North America..
• Managing administering 300 servers in 12 Datacenters hosting SAP's products like SAP-Success-Factors, SAP-Jobs2web, SAP-BizX Federal database, SAP LMS- Learning Management Systems, SAP Cloud infrastructure.
• Developed and trained onsite the SAP Bangalore L1 support team on RCA and ticket resolution of application and OS issues as part of the 24x7 support.
• Setup a Virtual images for Linux- both SLES Red-Hat, and Windows-XP/2003
• Compiled the stock kernel to a customized hardened kernel the PAM modules for security.
• Modified kernel parameters for optimal jboss, and apache performance.
• Hardware used IBM x336/ x3650/x3655, HP DL 380G6-E5560, Colfax servers.
• Ran the CIS benchmarking tool to rate the security on the servers configured Bastille.
• Setting users groups with controlled access privileges.
• Setup aliases sudo to be used by overseas 24x7 L1 support team to restart services when responding to Server alerts.
• Used Symantec Ghost application to store the customized kernel and use it as a cookie cutter to deploy on multiple servers.
• Configured Akamai web caching for customers accessing our application from APJ, EMEA, geographic locations.
• Configured Load Balancer for HA and load balancing.
• Setup network card teaming/bonding and also IP aliasing on the linux servers for high availability.
• NTP Expert- Setup ntp to sync the times on all servers with our internal/external ntp time servers. And NTP peering with our internal servers as a failback mechanism. Familiarity with using the Tardis SNTP.
• Setup Jboss wrapper services on the servers to write into wrapper logs.
• Participated in multiple Audits SAS, ISO-27001 for policies and facilities. Also documented topics like - Change control, system builds, physical security, backups, operational processes, ticketing, testing and risk assessments.
• Participate in ethical hacking exercise to test and secure our applications identifying potential loopholes.
• Installation of the NetWeaver CE 7.1 on SLES10 server and Red-Hat-AS
• Setup Cloud instances consisting of server running SLES, NetWeaver CE7.1, DB2 9.1 FP3 database and the SAP E-Sourcing application
• Setup DB2 9.1 FP3 database on a SLES10 linux server instance on the Amazon EC2 cloud and deployed applications on the Amazon cloud remotely.
• Setup and configured alerts and triggers on Nagios, Zabbix, Sitescope, Pingdom. to monitor server health.
• Integrating Nagios and Groundworks monitoring output in one web-console.
• Setup cronjobs to grab server statistics where monitoring is not currently enabled.

SAP HANA database management

• Build out the HANA servers with SLES OS and customized Disk partition using both SSD drives SATA drives
• Manage, administer fine tuning of servers running SAP's HANA database.
• like clearing the logs from the disk using the HDB commands. Restarting hung processes, setting up appropriate cron jobs for backups and log rotation within the HANA instance.
• Using SAP HANA Studio graphical dashboard to manage the HANA dB instances.

Storage: NAS Net App

• Configured the NetApp NAS Data ONTAP v7.2.4 Linux heads for accessing the NAS.
• Setup oracle cluster services on NAS RAC nodes to restart in the event of a reboot.
• Set up snapshot and snap-mirror cron scripts to run on the NetApp and stored at a DR site for database backup and restore for DR.

Active Directory implementation:

• Facilitated the management of linux servers with native Kerberos authentication of linux clients with Windows AD servers.
• Changed the pam modules, ldap files Kerberos system files.
• Setup sudo in an AD Domain controlled access, based on IP security groups.
• Implemented the Quest-Vintella Windows Active Directory Authentication services using the VGP -Vintella Group Policy Objective.

Confidential

Linux Admin Consultant

• Managing over 40 linux servers in all facets of server administration.
• Account management, configuration/initial implementation of NIS environment, automount, NFS, TCP/IP connectivity, OS installs upgrades, OS troubleshooting, disaster recovery procedures, adhering to audit policy, backup strategies.

Reponsibilities included

• Account management- Setup users and groups with controlled access privileges.
• Setup aliases sudo to allow 24x7 L2 support to log into the servers for restarting services.
• Setup Disk quotas and resource limits to overcome memory leaks.
• Setup ssh files to display corporate warnings on logins disabled transmission of root passwords.
• Setup Logrotation Custom Log Formatting to be used as per audit requirement.
• Setup init/boot scripts for services to be activated in event of server reboots.
• Configuring NIS/YP Servers for Centralized and secure Password and Login management.

• Set up Intranet Web Servers with APACHE, multiple-site management with named-based Virtual Hosting and access control with HTTP/HTTPS authentication

• Hardened Apache configuration to disallow indexes and symbolic links from being displayed in the web page.
• Was responsible for configuring, administering backing up VM's in our group.
• Setup Cygwin on terminal servers to access the linux servers via ssh.
• Enabled X-forwarding onto windows machines for remote administration purposes using Xming and Cygwin.
• Remote administration using IBM RSA-Remote Slimline Adaptor or HP LightsOut utility.

Confidential

Senior Software Engineer

Worked in DVT/QA Lab for 6 years as a Unix Lab Admin, building maintaining testing SAN technology from the ground up on a wide range of O.S. linux, netware windows. Setting up HA zones of storage arrays with attached hosts, testing zone path failovers. Created Segue-SILK automated test suites for GUI testing Perl scripts for CLI regression testing of EMC software suites. Stress and Load testing with heavy IO.

Reponsibilities included

• Performing Linux and Windows QA/Testing tasks, configurations and management of multiple family lines of Fiber and iSCSI storage arrays,
• Setting up a FABRIC using Brocade/Mc. Data switches to zone the storage arrays with hosts, using World Wide Name Zoning port zoning. Host OS were Windows, Red Hat Linux, SLES, Solaris, HP-UX, AIX, and Netware
• Doing NDU- non-destructive upgrade on the both Fiber and iSCSI storage arrays.
• Backend Cabling of the DAE Disk Array Enclosure and DPE Disk Processor Enclosure on the Fiber/iSCSI EMC Storage arrays.
• Upgrading the Firmware on both switch and array, installing patches on Linux
• Writing Smoke, Negative, Regression, Functional, Boundary, System, Integration test cases.
• Writing batch files, PERL scripts to test CLI commands, SILK tests for testing GUI.
• Creating Test Plans using the Functional Specifications, getting the test plan approved by the developers by organizing a Test Plan Review meeting.
• Attending contributing to Functional Specification review, Test Plan review, Code Review, New product training and Inter/ Intra group meeting, Defect resolution review, QA Post Mortem meetings.
• Kernel Compilation, Kernel Hardening and Customizing Kernel from stock kernel to handle additional non-standard h/w and s/w.
• Use of EMC Navisphere product suite - mirroring MirrorView , snapshots SnapView , Incremental SANCopy ISC for backup strategy.
• Strong concepts/implementation of backups/DR planning/strategies
• Simulating I/O for raw databases as well as Volume groups, LVM's, file systems
• Creating RAID 0,1, 3, 5 luns Raid Group and attaching them to Hosts- Netware, Linux-RH, Fedora, Debian and SLES, AIX, HP-UX, Solaris Window- 2000, 2003.
• Used Remedy for tracking defects, Clearcase for documentation, CVS for Perl script source control, and MS Visual SourceSafe for Test Plan source control.
• Setting up Secure NFS Servers with multiple Clients for File and Disk sharing for Corporate Intranets' include Failover, High-Availability NFS Servers..

• Setting up SAMBA servers, to enable Windows clients to communicate with Linux
• Used LVM for dynamically extending reducing partition sizes.
• Setup and configured GNU/Linux X-Window Jump-Host servers to remotely log in from various different Clients over remote Networks.