SUMMARY

• Over 7 years of experience in Unix System Administration and Support of various applications on Sun Solaris 8, 9,10, RHEL 5.x, 6.x, SuSE EL 9, 10, vSphere 4.0, 5.0, Cent OS and Windows 2000/2003/2008.
• Experience on Web servers such as IBM Websphere 6.0, Tomcat 5.x/4.x/3.x & Apache Http Server 1.x/2.x, Oracle Weblogic V7/8/9.
• Deep knowledge of Devops and experience in automation tools like Chef and Puppet.
• Experienced in installing, upgrading, patching, configuring and administrating Solaris OS (SPARC/x86) with proper release management.
• Experienced in Performance Monitoring, Security, Trouble shooting, Disaster recovery, Maintenance and Support of UNIX systems.
• Created and maintained user accounts, profiles, rights, disk space and process monitoring.
• Worked on shell scripts for CPU usage, Memory consumption and number of I/O to collect performance stats and troubleshoot issues if needed on Sun Solaris, Red Hat Linux.
• Expertise in file system concepts like LVM, SVM, VxVM, stornext.
• Creating new file systems, increasing and decreasing file systems, mounting file systems, un - mounting file systems and troubleshooting disk space issues.
• Experience in installing and configuring Splunk, Mongo DB, Memcached, App Dynamics.
• Experience in installing and configuring and deploying apps on Apache and Tomcat.
• Deployed and configured Veritas Volume manager (VxVM) and SVM for creating mirroring, striping, parity, new file systems, mounting and un-mounting and data replication of File Systems on Sun Solaris, Redhat Linux.
• Performance Sun Solaris, RedHat Linux servers using tools like vmstat, iostat, sar, top, pmstat, free, prtconf, syststat, iostat, netstat etc.
• Experience using remote system administration tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experienced in planning, documenting and supporting high availability, business persistence, fail-over, fail-back using Veritas Cluster Server 4.0, 5.x, Veritas cluster file systems in SAN environment.
• Expertise on DNS, NIS, NFS, FTP and DHCP, troubleshooting network problems such as subnetting, Routing, Firewall related on TCP/IP protocol issues.
• Installed and configured SUN Solaris 9, 10 on sun servers using Jumpstart installation and also manually.
• Experience in installing and configuring kick start in Linux.
• Resolving system errors and crashes, huge file sizes, file system errors.
• Troubleshooting of NFS servers and NFS clients in auto mount Environment.
• Installed and configured recommended kernel setting for various applications such as Oracle (10i, 11g), MySQL.
• Implemented different for RAID levels using for linux and solaris servers.
• Exposure to couple of ticketing systems like Remedy and jira.
• Experience with Scripting, to reduce daily routine work and automation with simple way and reduce human intervention.
• Worked on Group and Useradministration, startup & shutdown scripts, Crontab, File system maintenance, Backup scripts and Automation.
• Working closely with other business units like deployment, DBA, SAN Admin and Backup Admin etc and other product vendors like EMC, Dell, Oracle.
• Performed all configuration changes to software and Patching, firmware upgrades to hardware with in the maintenance window with proper change management approvals.
• Extensive experience in setup, configuration, upgrade, maintenance, performance monitoring and troubleshooting on different UNIX platforms likeLinux, VMWARE and system software and hardware
• Designed and implemented the Application based Load Balancing, Clustering and Mirroring.
• Experienced working in fast-paced, deadline-oriented environments. Proficient in Capacity Planning, and Security setups.
• Excellent written and verbal communication skills, inter-personal skills and self-learning attitude.

TECHNICAL SKILLS

Operating Systems: Redhat Linux 5.x, 6.x, Solaris 8/9/10, SuSE Linux 9, 10, vSphere 4.0,5.0, CentOS 5, 6, Fedora, Windows NT/ /2008.

Hardware: Sun Ultra Enterprise Servers E3500, E4500, E450, E420R, E250) SunFire ( 00 / 3800 / v880 / v480 / v240 / v210 / v 0R / 12K / 15K), M8000, M5000, M4000, M3000, T5220, T5240, Sun Workstations (Ultra 5, 10, 20, Blade 100,150, 2000), Sun Storage Array (D1000, A5000, ST 6540), Sun X3-2, X2-4.

Volume Management Tools: Solaris Volume Manager, Veritas Volume Manager 4.0,5.0, Logical Volume Manager, RAID, Veritas Cluster.

Server Management: Sun management console, HP open View, Compaq insight server manager.

Database Servers: Oracle 9i, 10g, 11g on Solaris and Red Hat Linux.

Network Services: SMTP, SNMP, DHCP, POP, NIS, NIS+, NFS, DNS, FTP/TFTP, ARP/RARP, SSH, TCP/IP, NTP, TELNET.

Web Technologies: Apache 2.x, Tomcat 5.x, 6.x, WebLogic 8.1, Websphere, Jboss 4.x, IIS.

Storage: EMC PowerPath, Symmetrix/Clariion & Celerra, Hitachi, IBM Arrays, Storage-TEK L700, Dell Power Vault, Netapp V6000, FAS6000, Netapp (Snap Vault and Snap Mirror), Symnatec suite.

PROFESSIONAL EXPERIENCE

Confidential, Palo Alto, CA

Linux Support Engineer

Responsibilities:

• Introduced chef in MyHealth environment for automation.
• Installed configured and implement Chef on the servers for automation. Wrote various cookbooks for automated deployment of software’s in Linux hosts.
• Installed and configured App Dynamics for monitoring using Chef Automation.
• Installed, configured and deployed Splunk and implemented forwarder configuration, search heads and indexing.
• Created queries as per the requirement and generated dashboards and management reports.
• Installed and configured Mongo DB 2.x,3.x with 5nodes using replication. Monitored the system using MMS and analyzed the performance of database operations.
• Implemented backup and restore from replica sets and log rotation.
• Installed, Configured, Administered and Supported Web Server Apache 2.x and tomcat 5.x,6.x on linux and windows environment and deployed myhealth application on them.
• Deployed and managed Stanford web app’s using chef automated tool built.
• Played role of SHC Infrastructure Middleware Operations Manager during transition.
• Provided 24*7 on call environment support for test and production environment and involved in trouble shooting and fixing day-to-day problems of the applications.
• Deployed various applications, debug issues and performed OS and application upgrades.
• Supported developer’s team by deploying applications into different environments.
• Provided administrative for the survers running Chef, Apache, Tomcat, Splunk, Mongo DB, MemcacheD, App Dynamics.
• Provided documentation
• Created sudo access and maintained user accounts on the linux servers.
• Researched and troubleshooted emerging application issues, from Tomcat/Apache configuration to code issues.
• Configure and deployed JAR,WAR applications in various work environments in non-production and production maintaining Load balancing, High availability and Fail over for the servers.
• Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.
• Resolved system errors and crashes, disk space problems, huge file sizes, file system full errors.
• Played a keyrole in change over from ITSM to Service now ticketing system.
• Experience in Ruby and Bash scripting.

Environment: RHEL 5.x/6.x, VMware ESX5.x, Apache 2.2.x, Tomcat 5.x,6.x, Splunk, MongoDB 2.x,3.x, MemcacheD, App Dynamics, Chef11.x,12.x, WebLogic 10/11g, WebLogic 8.x/9.x,Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware.

Confidential, Chicago, IL

Unix/Linux Engineer/Middleware Admin

Responsibilities:

• Monitored and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software patching, configuration changes and documentation.
• Installed, upgraded and configured SUN Solaris 9/10/11 on Sun Servers using Jumpstart and Red hat Enterprise Linux 5/6 using Kickstart.
• Installed & configured Guest operating system like Redhat 5.x,6.x and SuSE 9, 10 on VMware ESX 5.x.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Redhat Cluster Server.
• Used chef and puppet for automation to deploy various applications.
• Fine tuning of Operating System and performance analysis,uptime and response time and SLA.
• Managed user accounts and groups on a large scale in LDAP and NIS environments.
• Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.
• Performed installation, configuration and maintenance of Solaris 10 with Veritas Volume Manager 5.0 and Veritas Cluster Server 5.1.
• Configured the LUNs assigned by the storage administrators, and managed Volumes using Logical Volume Manager (LVM) on Linux.
• Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0 and Worked on disk file systems like stornext.
• Implemented RAID techniques and the creation of Disk groups and volumes, plexes using Veritas Volume Manager 5.0.
• Installed and configured LDOMs on Solaris 10 on T series Servers.
• Setup and configured KVM on Red hat and Xen on SuSE and installed guest OS on KVM and Xen.
• Created sudo access to users on Linux and Solaris servers.
• Configured Nagios to monitor the resources on the server farm and support them on a 24x7 basis.
• Configured multi-pathing using multipathd.conf, EMC Powerpath.
• Creating account for new users and deleting accounts for the expired users.
• Troubleshooting and analysis of hardware and software failures for various Solaris servers (core dump and log file analysis).
• Involved with the deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: SUN Solaris 8/9/10, RHEL 5.x/6.x, VMware ESX5.x, Apache 2.2.x, SuSE EL 9/10, WebLogic 10/11g, WebLogic 8.x/9.x, SunFire T1000, T2000, Sun M9000, M5000, M3000, Sun X3-2, X3-4, HP C Blade System,BL460c, BL420c EMC, Veritas Storage Foundation 5, Veritas Cluster Server 5.1, VMware.

Confidential, Vacanville, CA

Linux/Solaris System Administrator

Responsibilities:

• Installed, maintained and upgraded Redhat Linux and Solaris Servers using kickstart based network installation.
• Configured and administered multiple production Redhat 5.0, 6.0 servers across multiple platforms.
• Configured and maintained the volume groups, logical volumes using LVM, VERITAS Volume Manager and Solaris Volume Manager.
• Performed High availability designing using VERITAS Cluster Server 5.0 on Redhat Linux and Solaris Servers.
• Installed the Redhat 5.x,6.x operating system and set up the Oracle RAC environment.
• Installed, configured and administered Solaris 9/10/11 using Jumpstart.
• Managed File system using VERITAS volume manager 5.0.
• Added virtual hard drives, NIC cards and memory on Guest OS.
• Performed centralized management of Linux boxes using Puppet.
• Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Maintained the user accounts in NIS environment.
• Setup and configured KVM on Redhat and Xen on Suse.
• Resolved system errors and crashes, disk space problems, huge file sizes, file system full errors.
• Experience in Kernel fine tuning for maximum files, oracle database installation, ip forwarding, and network issues.
• Performed RAID mirroring of Root disk on Solaris boxes.
• Configured PXE environment for Kick Start installation for Red Hat Linux. Writing shell scripts for the routine tasks.
• Configured password less login between system using SSH protocol on Solaris and Linux boxes.
• Involvement with the Deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: RHEL 4.x/5.x/6.x, Solaris 8/9/10, VERITAS cluster server 5.0, VERITAS foundation suite 5.0, Apache 2.2.x, Oracle 9i,10g, JBoss 4.2, VMware, Sun Fire x4100, x4200, x4250, T2000, T5440, M3000, Dell R805, EMC Symmetric 8830, 8840,DMX -3 NFS, and DNS, EMC, Shell, bash scripting.

Confidential, SFO, CA

Unix System Administrator

Responsibilities:

• Build and support cluster infrastructure (Sun Cluster 3.x, Veritas cluster, Linux RAC cluster).
• Configured Jumpstart server for Solaris 9/10 and Kickstart Server for Redhat Linux 4.0,5.0.
• Provided Administrative support for about 225 Solaris/Linux servers running Web logic, Web sphere Suites, Apache Web Server and Multimedia Messaging applications.
• Installation, Configuration and Maintenance of Solaris Operating System with Veritas Volume Manager and Veritas Cluster Server.
• Trouble shooting the OS related Issues.
• Created new file systems whenever required.
• Knowledge on Packages and patches in Solaris and Redhat.
• Performed tasks such as User, group management, adding, removing disks and creating file systems as requested on UNIX/WINDOWS Servers.
• Installing Veritas Volume Manager and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Involvement with the Deployment teams in trouble shooting and fixing day-to-day problems of the applications in production on 24/7 schedule.
• Ensured the data redundancy with RAID implementation.
• Configured different Network related services such as NFS and NIS.
• Configured send mail server in the local mail server.
• Responsible for the configuration of DHCP server and Samba server.
• Responsible for DNS server management, User disk quota management, Projects, Quotas management. Troubleshooting the problems regarding NIS and DNS.

Environment: - Sun Solaris 8/9/10, RHEL 4.x/5.x/6.x, SuSe Linux 9,10, Apache, Tomcat, Samba, NFS, SSH, Production hosting and software development support, Secure FTP Server, Veritas Volume Manager 4.0, Oracle 10g, Sun Fire X4100, X4200, X4250.

Confidential, Chicago, IL

Unix/Linux Administrator

Responsibilities:

• Performed Systems monitoring and administration of Servers for day-to-day problems, patches user administration, hardware failure, monitoring log files, backup, software up gradation, configuration changes and documentation.
• Installed & configured Solaris Jumpstart server and Linux Kick Start Server.
• Performed troubleshooting for various problems, logging call with vendors.
• Knowledge on Packages and Patches on Solaris and Red hat 4.0.
• Performed installation and configuration of Veritas Volume Manager, LVM, VERITAS File System and Veritas Cluster Server.
• Created UNIX Shell scripts for job automation.
• Installed, Configured and Administered the High Availability Veritas Cluster Servers for failover and redundancy purpose.
• Created User, Groups. File Systems per database requirement.
• DevelopLinuxshell scripts to accomplish redundant tasks to simplify in distributedadministration.
• Performed installation, Configuration of Web Servers, Application Servers and Database Servers on Sun Solaris 8/9.
• Setup and configure NIS environment and troubleshoot NIS when needed.
• Provided sudo access to users if needed.
• Disk and File system management through Veritas Volume Manager.
• Involved in troubleshooting day to day system and user problems.
• Interacting with various teams such Oracle database team, and Net Backup team.
• Maintenance of Source code, Direct interacts with development, migration, testing & Database- Oracle9i.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Problem determination, Security, automation and Shell Scripting.
• Performance management & Capacity planning.

Environment: Apache, Solaris 8/9, Oracle 9i, Veritas Cluster Server, Veritas File System, Veritas Volume Manager, Sun Fire 4500,V880,V 0R,E450,E250, Web sphere, Web logic, LVM.

Confidential

Linux/Solaris Administrator

Responsibilities:

• Monitored the usage of CPU, load on CPU, checking the load on memory and various security aspects of the systems configuring the network printers.
• Installed, configured and maintained Oracle 8i on Sun Solaris.
• Installation, Configuration and Administration of High Availability VERITAS Cluster Servers for failover and redundancy purpose.
• Using common scripting languages like Bash and shell to automate regular admin jobs.
• Performed problem determination and restored service using standard procedures.
• Maintained a secure Samba file server on a 3 Red Hat Enterprise Linux systems for integrated data communication between Windows and Linux Operating Systems.
• Security measures blocking unnecessary ports and restricting user remote logins.
• Managed data and disk drives, disk mirroring and RAID implementation using Solaris Disk Suite.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Configured Jumpstart server for Solaris 8/9 and kickstart server for Red hat 4.0.
• Responsible for Day to Day Backup and Recovery using tar.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users.
• Monitored unauthorized access and unauthorized users.
• Performed Recovery Management on tapes using Ignite-U.

Environment: Linux, Sun Solaris 8/9, Oracle 8g, NIS, DNS.