SUMMARY

• Researched and developed Apache 2.2 SSL proxy front end proof of concept dat provides SSL encrypted communications between our Tomcat 7 servers and our Apache front - ends.
• Around 9 years of IT experience in System Administration working on Red Hat Linux, Solaris, Suse Linux, AIX, Cent OS, HP-UX and Windows environments.
• Experience in administering Solaris & Linux. Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of Sun Solaris & Linux.
• Experience in Installing, upgrading and configuring Red Hat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation.
• Experience in Installing, upgrading and configuring SUN Solaris 2.x, 7, 8, 9 and 10 on Sun Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like Veritas volume Manager and Solaris volume manager.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Redhat Linux.
• Installation and upgradation of Packages and Patches configuration management, version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, sendmail, ftp, remote access, security management and Security trouble shooting skills.
• Experience on Webservers such as iPlanet Webserver 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x & Apache Server 1.x, 2.x and integrating them with Weblogic 10.x servers.
• Experience in administering Vsphere 4.0, 5.1, 5.5.
• Experience in Installation of Oracle and MySql.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Team player with good management, analytical, communication and interpersonal skills.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Researched on Docker’s and Containers
• Installation and configuration of Jboss, Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
• Experience in LDAP and Puppet, designed and developed integrated solutions through tools, processes and procedures to facilitate the cost effective delivery of services or fielding of products. Perform testing and integration, maintenance and escalated problem resolution of systems, subsystems and components.
• Experience in Network Configuration and Troubleshooting and Partitioning of file systems.
• Developed customer solutions based on current hands-on knowledge of the Linux product line, storage, networking, management, and associated customer business processes.
• Strong working knowledge of Switch and Router configuration and customization with VLAN and Inter-switch communication.
• Working knowledge on TCP/IP, UDP protocols in solving network related issues on the servers.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture
• Proficiency of knowledge in PAAS, SAAS & IAAS. Working knowledge with AWS - Amazon Web Services for application migration from hard structure to Amazon Cloud.
• Experience with Setting up Chef infrastructure, Chef-repo and Boot strapping chef nodes • Experience in writing complex cookbooks, recipes and configure them by applying node convergence on various production nodes
• Experience in managing SQL and PL/SQL scripts and good understanding of the data modeling concepts • Experience in creating users, groups and roles in LDAP
• Experience in using Chef attributes, Chef templates, Chef recipes, Chef files for managing the configurations across various nodes
• Training Junior Engineers and other team member on project setup.
• Day to day ticket resolving & submit CRQ based on user requirement
• Performing regular day-to-day Systems Administration activities such as User Administrations, Disk Management, Package Install, Patch Management, Storage Management, Performance Monitoring; Log files Monitoring, Jobs Scheduling, NFS administration and Disaster Recovery/fail-over exercises.
• Proficient in Shell Scripting (Bash), Sed and Awk.
• Conducting team assessments and providing feedback and rewarding
• Coordinate with Security team for required autantication setup and make sure the things are going properly
• Strong in troubleshooting, monitoring, training and 24/7 production support in mission critical environments Worked with systems support team to define, architect and maintain highly available production systems.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5/6, Ubuntu 12.x, 13.x, Solaris Release 2.x, 7, 8, 9, 10 IBM-AIX 5.x, Windows 98, Windows 2000,2002,2008,2010 and NT.

Hardware: HP Proliant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra’s, V210, V280, V490, V880, V6800 SUN Ray (1g UltraThin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5.

Software: Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster Server 4.x, 5.0, 5.1, 6.0, Veritas Netbackup 6.0, MS-Office/MS-Project.

Web/ Application Server: Apache-tomcat, jboss, weblogic, WebSphere, Apache, Http Server, IIS 4.0/5.0, MQ SeriesV6.0, V7.x.

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, TCP/IP, and tcpdump.

Cluster Environment: Red hat cluster suite, Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 3.x, 4.x.

Programming Languages: C, SQL, HTML, PHP, XML, Perl and Shell Programming, Python

Backup Management: Veritas Netbackup 4.x/5.x/6.x, ufsdump, ufsrestore, tar, dd, cpio

Monitoring Tools: Nagios, sitescope, cacti, Munin

Other Skills: VMware, VCenter Server, VMware Server, Solaris Zones, LPAR, TSM.

PROFESSIONAL EXPERIENCE

Confidential, Palo Alto, CA

Linux System Administrator (LAMP ADMIN)

Responsibilities:

• Administration of RHEL 5, 6 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Administration, package installation, configuration of Mono Compiler
• RPM and YUM package installations, patch and other server management.
• Deployed a distributed Jenkins environment for continuous integration/builds. All builds output rpm packages as artifacts.
• Responsible for packaging all code into RPMs.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Refresh Linux servers which includes new hardware, OS upgrade, application installation, testing.
• Installing, configuring Redhat servers, automating scripts
• Installation, configuration of MySQL 5.1 which includes creating database tables, updating table entries.
• Installed and configured an automated tool Puppet dat included the installation and configuration of the Puppet master, agent nodes and an admin control workstation.
• Performed automating tasks using puppet modules, creating profiles, manifests for new servers, and pushing them to servers.
• Installed SSL Certificates on multiple F5 Load Balancer’s
• Part of a Development team dat works on a custom Cloud Portal to integrateAWSAPIs for Automated Network configuration and Server/Application provisioning.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Responsible for OpenStack project core infrastructure including code review, continuous integration systems, and developer tools
• Implemented continuous integration testing and release systems
• Installing, configuring Jboss 7.1 on Linux, Unix servers, integrating it with Apache server.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Application deployment and data migration on AWS.
• Deploying and operating AWS, specifically VPC, EC2, S3, EBS, IAM, ELB, Cloud Formation and Cloud Watch using the AWS console and AWS CLI.
• Developing Cloud Formation Scripts for AWS Orchestration.
• Installing and configuring Apache and supporting them on Linux production servers.
• Worked on E-commerce based application products like Amazon related to internet marketing.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Worked with Redhat Satellite Servers using Kickstart Mechanism.
• Designing Firewall rules for new servers to enable communication with application
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat).
• Improved the System Performance by resolving DNS Issues of F5Load Balancer’s.
• Used Nagios tool to monitor the host services actively and passively.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Installing, configuring Apache 2.2.15, Tomcat 7.0 and higher and integrating them.
• Adding servers to the domain and monitoring them using HP monitoring tool.
• Developed automated processes dat run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.

Environment: Red-Hat Linux Enterprise servers, Veritas Cluster Server 5.0,6.0 Windows 2008/2010 server, Shell programming(Bash), Jboss 4.0,4.2,5.1,6.1,7.0, JDK 1.5,1.6,1.7,1.8, Puppet, AWS, VMware Insfrastructure 3.5.

Confidential, Overland park, KS

Linux System Administrator

Responsibilities:

• Administration of RHEL 5, 6 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using vSphere vcenter.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Administration, package installation, configuration of Oracle Enterprise Linux 5.4.
• RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Refresh Linux servers which includes new hardware, OS upgrade, application installation, testing.
• Worked on creating VLANs, upgrading BIOS, configuring servers on HP Virtual Connect Manager for HP Blade and Standalone servers.
• Installing, configuring Redhat servers, automating scripts, tasks using Samba.
• Installation, configuration of MySQL 5.1 which includes creating database tables, updating table entries.
• Performed automating tasks using puppet modules, creating profiles, manifests for new servers, and pushing them to servers.
• Good experience in troubleshooting the Virtual Private Cloud Network Peering and routing issues.Setup of monitoring tools like Nagios and Amazon Cloud watch to monitor major metrics like Network packets, CPU utilization, Load Balancer Latency etc.
• Deployed Puppet for configuration management to existing infrastructure.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Worked on KVM, installing, configuring Linux VMs.
• Performed Hadoop cluster Installation 2.4, 2.6
• Installing, configuring Jboss 7.1 on Linux, Unix servers, integrating it with Apache server.
• Configuring multipath, adding SAN mode and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installing and configuring Apache and supporting them on Linux production servers.
• Worked on E-commerce based application products like Amazon related to internet marketing, credit card transaction inventory management.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Creating the platform in AWS (Amazon Web Services Tool) according to the requirement
• Coordinating with Database team to get the necessary DB setup done in the AWS and make sure the DB import is done
• Worked with Redhat Satellite Servers using Kickstart Mechanism.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage on 2, 3, 4 node clusters.
• Designing Firewall rules for new servers to enable communication with application, Oracle 11g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat).
• Improved the System Performance using Nagios and custom Plugins.
• Used Nagios tool to monitor the host services actively and passively.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).
• Installing, configuring Weblogic 10.3, Apache and integrating them.
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
• Developed automated processes dat run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.
• Worked on NetApp Storage administration and configuration clusters(7-mode and c-mode (Ontap 7.x,8.x,NAS/SAN).

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0,6.0 Windows 2008/2010 server, Shell programming, Jboss 4.0,4.2,5.1,6.1,7.0, JDK 1.5,1.6,1.7,1.8, ESXi 5.1, 5.5, vSphere 5.1, 5.5, VMware Insfrastructure 3.5.

Confidential, Baltimore, MD

Solaris/Linux System Administrator

Responsibilities:

• Responsible for Design, Build, Configuration and Troubleshooting Red hat Linux 5/6 and Solaris systems.
• Installed and configured Solaris servers using Jumpstart, configured/ maintained Zones, LDOMs, ZFS pools on Sun Solaris 10 Servers.
• Managed packages using RPM/ YUM on Red Hat Linux and maintaining patching on Solaris servers.
• Worked on various SAN Fabrics (FC SAN, iSCSI SAN) and NAS storage.
• Configured Multipath, Powerpath, added SAN, created physical volumes, volume groups, and logical volumes.
• Responsible for setting up and managing Kickstart and Jumpstart environments. .
• Worked with Veritas RAC, VxVM, and VxFS in Linux and Solaris environments.
• Extensively used NFS, NIS, DHCP, FTP, Send mail, and Telnet for Linux.
• Coordinated with database administrators while setting up Oracle 10g/11g on Linux.
• Added disk space and managed various file system on the Linux and UNIX servers.
• Monitored and troubleshot different performance related issues using performance monitoring utilities like iostat, vmstat, top, netstat and sar.
• Installed and updated patches and packages for all the servers.
• Configured and installed apache web servers on the different Linux and UNIX servers.
• Installed databases like MySQL and Oracle on the Linux servers.
• Monitored system logs and important messages for errors and warnings of the hardware and software failure.
• Worked on the concept of Git Cloning to create a copy of the git repository.
• Performed system administration activities like installing, updating the maintenance page, restarting and stopping the services during the maintenance period; generated daily report physically.
• Monitored Linux and UNIX servers using internal tools such as du, df, top, dmesg, who, free.
• Performed ongoing performance tuning, hardware upgrades, and resource optimization as required.
• Made backups of the important files using the tar, zip, gzip and compress utilities.
• Created file systems on LUNs from SAN environments, which included EMC Symmetrix/ Clariion series.
• Created, cloned Linux Virtual Machines, templates using ESXi 5.1, 5.5 and migrated servers between ESX hosts.
• Monitored CPU utilization using Nagios.
• Actively participated in periodic Disaster Recovery test activities.
• Configured and monitored NFS environment.
• Implemented Automated Application Deployment using chef.
• Configured NIC Bondings on Linux and IPMP on Solaris for redundancy of network interfaces.
• Configured and troubleshot Symantec Enterprise Security Monitoring Tool.
• Working with AWS Cloud computing and involved in creating AWS instances and deployed Linux and Ubuntu on AWS environment and Expertise in migrating applications onto AWS.
• Provided Shell scripts to automate to support setup, configuration and operational tasks.
• Provided 24x7 production support for 200+ Linux and Solaris OS
• Maintained documentation, reports and presented weekly system status report.

Environment: RHEL 5.x, 6.x, OEL 6.x, Solaris 9/10, Weblogic, Websphere, Apache, Tomcat, MySQL, Oracle 9i, 10g, HP Proliant BL460, BL685, DL 380GS, IBM- AIX RS/6000, pSeries 575, 590, 650, Sun Fire (V215, V240, V440, V480, X2250, X2270, X4170M2, T1000, T2000DI), Chef, SPARC Enterprise M3000, M4000, T5120, T5140, Veritas Cluster Service, Veritas Volume Manager, VMware Virtual Client, Kickstart, Jumpstart, JBOSS, AWS, WebLogic, EMC Symmetric/Clariion.

Confidential - Cambridge, MA

Solaris/Linux System Administrator

Responsibilities:

• Installed, upgraded, Mirrored and configured RHEL 4.x and Sun Solaris 10/9.0/8.0 using Kickstart, Jumpstart Installation respectively.
• Upgraded Solaris 8 to 9 and 9 to 10 on Sun servers and workstations. Added necessary patches using patch add utility and scripts.
• Installation of Solaris 9, 10 on Sun Fire and Enterprise server using Jumpstart, custom configuration like installing packages, configuring services.
• Worked on Solaris 10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Configured and administered Samba to provide file services, resolved various inter-operability issues between Windows NT and Solaris platforms.
• Installation, Setup and Configuration of WebLogic 9.0/8.1 application server.
• Disk Management using different RAID technologies in Solaris and Linux using Veritas Volume Manager and LVM.
• +-Veritas Cluster Installation and Configuration along with Resources and Service Groups Configuration in VCS.
• Configuration and administration of DNS, LDAP, NFS, NIS and Samba in RedHat Linux and Sun Solaris.
• Maintained 15 VMware ESX server connected with two EMC VNX SAN box and managed of two Cisco MDS switch using Fabric & Device management tool.
• Network trouble shooting using ndd, traceroute, netstat, ifconfig and snoop.
• Maintaining appropriate file and system security, monitoring and controlling system access, changing permission, ownership of files and directories, maintaining passwords, assigning special privileges to selected users and controlling file access, monitoring status of process in order to increase the system efficiency, scheduling system related and cron jobs.
• Involved in Configuring DHCP server and giving IP addressing dynamically.
• Involved FTP Server configuration in Linux and done kernel tuning on Linux for play out software.
• Worked on Oracle OVM, creating LDOMs, adding resources, hardware.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software and directories & files using access modes.
• Written Shell scripts to run Batch Jobs on Sun Solaris and Red Hat Linux servers.
• Installed and configured mail servers like Send mail, Postfix and Microsoft Exchange Server.
• Hands on Experience in tracing data collection, log file analysis for network, application, middleware and Troubleshooting general problems.
• Provided system performance reporting on a regular basis along with keeping all software at current version levels, and maintaining a log of changes for tracking.

Environment: RHEL 4.x, 5.x, 6.x, Sun Solaris 10/9.0/8.0,Windows NT & Solaris, WebLogic 9.0/8.1,Logical Volume manager.

Confidential

Linux System Administrator

Responsibilities:

• Responsible for day-to-day System Administration for Linux RedHat servers.
• Build the E450 and 6000 Servers with Solaris operating system.
• Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery.
• Systems performance monitoring.
• Solaris Operating Systems upgrade, package installations, updates, patches and software fixes.
• Responsible for troubleshooting end user and application problems.
• Veritas File system and Veritas Volume Manager.
• Creating User accounts, Mail account, groups, printer etc.
• Monitoring system resources, logs, disk usage, scheduling backups and restore.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Creation/Configuration of Additional swap/ tmp dynamically as and when required.
• NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
• Solving the problems as & when created when NFS data being accessed.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Assembling the systems and installing operating system and application software.
• Training for users to use the program.
• Setup and configuration ofHP rp7410 server along with HP Storage Works SAN.
• Set-up ofHP Storage Works EVA 5000 storage systems (2C2C-D)
• Worked with HP CEs in troubleshooting and replacing hardware inSuperdome servers
• Tuning UNIX Kernel Parameters using SAM and command line.
• Disk management using Logical VolumeManager (LVM) and online file system administration using HPJfsOnline (Advanced VxFS) andVXVM, under production, development and test.
• Management of system back up and data archiving procedures for all business hosted on ourproduction and development servers using Legato Backup tool.
• Installation and day-to-day maintenance of Sun Solaris hardware and software.
• Installation and management of software applications licensed from third-party vendors, which run on the Sun Solaris, and Linux based servers.
• Performance tuning and management of all systems to deliver optimal performance.

Environment: RHEL 3.x,4.x,5.x, Solaris 10/9/8/2.x, AIX 4.3, 5.1/5.3L,Sun E10K and E15K Servers, Sun Enterprise 6500/500/4500/450/ 420 R/250 Servers,, HP Ignite, HP Service Guard, V440, V490, V120, Sun Fire 25k, X4100, X4200, X4440 and X4500.

Confidential

Linux/Solaris Administrator

Responsibilities:

• Planning of OS upgrades for existing infrastructure.
• Planning and Implementation of Kernel patches on Solaris and Linux Servers.
• On-call support using the Remedy Ticket System for routine system administration issues.
• Tuning of the TCP/IP stack for troubleshooting application and OS issues.
• Responsible for installation and maintenance of the HP-UX and Solaris Servers.
• Responsible for downloading and upgrading the patches as per the system requirements.
• Support the PeopleSoft/Weblogic team by halping in the OS and Application upgrades and installation of new SSL certificates for Weblogic8.1.
• Maintenance of VERITAS Cluster Server.
• Used NetBackup for backing up & restoration of file systems.
• Built new servers using Custom jumpstart installation and Kick start.
• Securing services using TCP wrapper and SE Linux.
• Worked with Firewalls using IP Tables.
• Open SSH configuration.
• Worked on upgrades without downtime using yum and as well as setting servers locally for upgrades.
• Repairing the corrupted file system using FSCK.
• Network Interface configuration.
• Created Logical Volumes (LVM) for Linux operating system.
• Worked extensively on VMware (virtualization).
• Responsible for managing the OS test, release and push process.
• Maintained, updated and audited system documentation.
• Installation and Implementation of Apache Tomcat Application Server.
• Responsible for adding and maintaining users on the network.
• Supported and implemented system standards, processes and security to maintain corporate IT standards.

Environment: Solaris 9,10,HP-UX 10.20,11.0/11.me, Linux(RHEL 2,3,4),LVM2, Jumpstart, Solaris Volume Manager(SVM), VERITAS Volume Manager, Sun Fire 2900, 4900, 6900, Sun Enterprise Server T5140, T1000 and T2000 and M4000.