SUMMARY:

• Experience in Linux, Unix Engineering, administration and production support of various applications on Sun Solaris, Ubuntu and Windows environment.
• RED HAT Enterprise Linux(RHEL) 4.x, 5.x, 6.x, Oracle Linux (OEL) 5.x, 6.x SUSE Enterprise Linux Server 10, 11, SOLARIS 9, 10 and UBUNTU 10, 12.
• Experience in Server infrastructure development on AWS cloud, Cloud Formation, Cloud Front, EC2, RDS, S3, Route 53, SNS, SQS and Cloud Trail.
• Experienced in working on DevOps/Agile operations process and tools area (Code review, unit test automation, Build & Release automation, Environment, Service, Incident and Change management).
• Provided support for multi - path Fiber Channel storage systems, as well as Solaris servers configured with multiple Fiber Channel (FC), Host Bus Adapters (HBA) on a Storage Area Network (SAN).
• Expertise’s in using build tools like MAVEN and ANT for the building of deployable artifacts such as war & ear from source code.
• Experience with Linux/UNIX environments and scripting for Build & Release automation.
• Deploying and maintaining Micro services using Docker.
• Installed and configured Puppet Master and clients and written manifests
• Good experience in creating and editing Shell, Bash, Python Scripts for automation
• Involved in 24x7 on-call production support and troubleshooting all types of problems related to OS and Application.
• Team player with good management, analytical, communication and interpersonal skills.

TECHNICAL SKILLS:

HardWare: HP-Blade servers, Dell PowerEdge, Fujitsu Primepower, Sun Storage T3/T4 arrays, Sun Fire Server, Sun Enterprise Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Spare Ultra 1,5,10, IBM ADIC Scalar 24 LTO3, PSeries, DEC DS20, ES40

Languages: Python, Java, C, C++, My SQL, JavaScript, Shell, SQL, UNIX

Web Application Server: Tomcat, Apache, IBM RAS/WAS, WebLogic

Database: Oracle 10g & 11g, Sybase 12& 15

Operating system: Windows, Unix, Sun Solaris, Linux, Red Hat, CentOS, Ubuntu

Clusters: Veritas Cluster, Sun Cluster

Networks: DNS, SSH, HTTP/HTTPS, BIND, DHCP, NFS, NIS, LDAP, NAS, SAN

Automation Tools: Puppet, Chef, Splunk, Nagios, Orsyp

PROFESSIONAL EXPERIENCE:

Linux Administrator / System Engineer

Confidential, Somerset NJ

Responsibilities:

• Experienced in Upgrading, Performance tuning, Migrating, Troubleshooting, Disaster Recovery and Monitoring of various Red Hat Enterprise Limited (RHEL 5.x/6.x/7.x).
• Experience in Installing & configuring multi-pathing on Red hat and Solaris using EMC power-path and native Multi pathing software.
• Experience in supporting and maintaining environments carrying different middle ware applications like JBoss, iPlanet, web logic, Tomcat & Sun one server.
• Worked with VMware tools like VCenter & vSphere to manage VM's running on ESX cluster nodes and experience working on Vmotion.
• Experience in adding servers to VCenter servers and managed hosts from vSphere client. Analysing the VM-Support logs for ESX servers and VCenter logs to diagnose the root cause for the problem and troubleshooting them.
• Working knowledge of computer applications and shell scripts (Bash), Python, and Power Shell for automating tasks.
• Expertise in visualization using VMware ESX server 5.5/6.0 vSphere, VMware Workstation, Virtual Box and Xen.
• Support for Unix/Linux systems administration, Problem resolution and operational support for production environment.
• Experience in providing patches to production and non-production Linux and Windows based environment.
• Experience in working with Red hat Linux LVM v1, 2, VERITAS Volume Manager v 4.x, 5. x.
• Experience with Clustering like Red Hat Clustering & VERITAS Cluster.
• Experience in the implementation of High Availability environment using VERITAS Cluster Server 4.1 with agents for Send mail, Web Logic and NFS.
• Creating and managing Development and Continuous Integration Environments using VMWare ESX, automated through Jenkins, Docker and the VMWare CLI, also involved in several projects setting up builds using Foreman, Puppet and Chef.
• MaintainingLinuxQuota System.
• Configuring and managing of Volume group's (VG's) and Logical volumes (LV's)
• Increase the Volume & File system as per client requirement.
• Configuring and managing RAID Levels (RAID 0, RAID 1, and RAID 5)
• Terminal addition/deletion and Package Updating.
• Diagnosing, monitoring performance issues using PS, TOP, vmstat and netstat. Reviewing logs for failures.
• Monitoring System Performance of Virtual memory, Swap management, Disk utilization, and CPU utilization.
• Configuring FTP server to maintain the shared folder within the organization.
• Installing and Configuring NFS file system and shared them to clients.

Linux Administrator

Confidential, NJ

Responsibilities:

• Installed configured and Administered Linux 5.x, 6.x and Windows 2008 R2, Ubuntu Servers
• Performed build and deployment of servers in Virtual environment using vSphere, vCenter and deploying global policies using HPSA
• Performed Data Center Migration and Integration in a critical time crunch scenario
• Worked on Configuring Tivoli Storage Manager to perform backup of the operating system and file system, adding Storages to the existing data source over virtual Env
• Managing Access Administration, restricting and securing unauthorized access to the hosts and granting privileged access to the System Account and Users Accounts
• Configured secured shell login SSH, Public/Private Authentication
• Worked on NFS, DNS, NIS, Telnet, SSH, sFTP, Cheff/Knife
• Providing day to day support to the development and Database teams.
• Supporting scheduled periodic patching of the servers and supporting the release deployments, supporting/upgrading Jenkins to support deployment process
• Participating in trouble shooting complex issues with Storage, ESXi hosts, Firewalls and Networking
• Prioritizing the tasks participating in War room calls and triage the high priority issues
• Worked on monitoring tools such as OEM, EM7, New relics, HPOpen View, XMatters.
• Proactively monitoring the systems health check and load on the hosts
• Tools worked on Workbench Workstation, HPSM, HPSA, Jira, F5, Chef/Knife, Sub- Version, Jenkins, Jira, and Service now.

Linux Administrator

Confidential

Responsibilities:

• User account management & Setting up ACL Permissions
• Service configuration NFS, SSH, NTP.
• Patch management.
• Disk management (RAID disk & Raw disks) & Troubleshooting.
• LVM disk management & Troubleshooting.
• File system housekeeping inLinuxservers.
• Resolving performance issues on servers.
• Setting up the file, Directory Permission
• Disk Administration, Creating File systems, Mounting / Unmounting file systems
• Installation, configuration and maintaining different versions of RHEL, Centos.
• Installing software, patching, upgrading and maintenance of operating systemby yum installation and through BSA blade logic.
• Applying operating system version upgrades, patches, and configuration changes
• Scan new LUN to server, Creating, extending, updating and removing file systems (LVM)
• LinuxMemory Management, Analysis of Memory Usage, Cache & swap management, Analysis on extracted SAR report
• Login to V sphere client and take console for virtual servers if required for trouble shooting.
• Monitoring and updating Tickets (issues) through Incident management system based on ITIL Process
• Implementing Changes approved in CAB according to ITIL process.
• Working knowledge on SDM 12/Service Now ticketing tool.

Linux/Unix Administrator

Confidential

Responsibilities:

• Installation & Administration ofLinuxServers on RHEL 7,6,5
• Troubleshooting ofLinuxOS crash
• Installation & Configuration of performance monitoring tool
• Server Commissioning & Decommissioning as per the process.
• Configuring RAID Levels.
• Managing User Accounts, Groups & Organizational Units.
• Troubleshooting hardware related issues in physical servers
• Maintenance activities for AD Users/home folders/Mailbox clean-up.
• Installation, Configuration and Maintenance of WSUS 3.0, SCCM & Altiris.
• Installation, Configuration Troubleshooting of DHCP Server.
• Installation Configuration and Troubleshooting of DNS Server.
• Working on Server performance issues.
• Managing and maintaining the WSUS and SEPM
• Supporting on Printers & Print Server issues.
• Working on various priority based tickets, meeting SLA.
• Working on various priority based tickets P1, P2, P3, P4 tickets, meeting SLA.
• Working for Root Cause Analysis RCA.
• Cooperating with Problem Management team to find out RCAs.