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- Data Center Operations-SAP Cloud

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

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

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.