SUMMARY:

• Over 7+ years of professional experience in LINUX/UNIX SYSTEM ADMINSTRATIONalong with windows.
• Proficient in installation, configuration, maintenance and support of RHEL 4.x, 5.x, 6.x, 7x plus extensive experience onsystems like Ubuntu, OpenSuse, Oracle Enterprise Linux (OEL), Fedora, and brief idea on Solaris and AIX.
• Specialized in configuration of NFS, DNS, DHCP, Automount, FTP, Sendmail and remote access.
• Hands on experience in process like Kickstart, Jumpstart, infrastructure setup and installation methods.
• Adequate knowledge of various high end servers plus hands on experience of servers like HP ProLiant DL 380, 385, 580, BL400c, BL480c, IBM HS22, HS12 Blade center Servers and IBM power7/8
• Proficient in file system concepts; creating, modifying, mounting, un - mounting file systems plus troubleshooting on various file system types.
• Extensively worked on creating, maintaining user accounts, profiles, security, rights, disk space and process monitoring and restoring.Worked on backup technologies like Veritas Net backup 7.0, 7.1 and 7.5,8.0, EMC Networker v7.
• Responsible for creating RPM Packages.
• Proficient with virtualization environment usingVMware ESXand ESXi, Oracle Virtual Box and Microsoft Virtual PC
• Responsible for system administration, configuration and support for Managed File Transfer (MFT) platform using Seeburger Business Integration Suite (BIS)
• Proficient with Storage Area Network (SAN) /Network-Attached Storage (NAS) devices, EMC, Zoning, Linux Multipath, EMC powerpath.
• Hands on knowledge of EMC symmetrix, EMC connectix and Hitachi data system.
• Knowledge of Netapp filters and sharing through CIFS and NFS.
• Hands on experience on creating Raid groups and assembly.
• Disk space and file system management via Veritas Volume Manager 4.x, 5.x, Logical Volume Manager and ZFS.
• Knowledge of clustering using VSC, RHCS in SAN environment.
• Proficient in managing, installing and troubleshooting LADP, NIS, NFS, DHCP, SAMBA and DNS.
• Experienced with Auto mount, TCP/IP, SMTP and Printer configuration.
• Proper knowledge of Apache, Tomcat, Sun ONE, JBoss.
• Experienced in monitoring tools like Nagios, nMon, and BMC patrol.
• Use of cloning and clustering for Workload Management (WLM).
• Educated in database environments like Oracle (RAC), Automatic Storage Management (AMS) Disk.
• Good knowledge on web applications and Enterprise application using as Java/J2EE
• Good knowledge of Shell Scripting using sh, ksh, bash and PERL as well as debugging the scripts.
• Experience on configuration management tool Puppet Chef.
• Demonstrated strengths in communicating with all levels within organization and manage application development.
• Ability to rapidly learn new concepts together with excellent interpersonal skills.

TECHNICAL SKILLS:

Server Administration: RHEL 4.x, 5.x, 6.x,7x; Solaris 9/10/11; Expertise on Dev, Staging and Production environment under various OS, Application and Storage platforms; Shell Scripting: Bash. Fedora, SUSE, Debian, Ubuntu, CentOS, IBM-AIX, Sun Solaris, and HP-UX, Windows -NT/ 2000/2003/2007 Server/XP Pro/Vista/7/8.

Cloud &SaaS Platforms: Amazon and Google Web Services.

Backup and Recovery tools: Dump, Restore, Tar, CPIO, Rsync, Kernel re-compilation & Patches update, Kickstart Installation; Firewalls: IPTables; SELinux; ACLs, Tivoli Storage Manager, Veritas Netbackup, Storix.

File Transfer: FTP-Vsftpd; NFS & SAMBA; DNS-BIND, NTP, CUPS, SSH, Telnet, VNC,NIS& LDAP, SSL, MFT.

Hardware and Virtualization: DELL (PowerEdge), HP (ProLiant G7 & G8), IBM Blade Center, Sun-Fire X-series and T- series Enterprise Servers, Dell Power Edge Servers and MD1000 Storage/RAID setup Web, Application and Mail Servers Weblogic 10.x/9.x/8.x, Websphere, Apache HTTP/Tomcat/Jboss Server Installation & Configuration; Compiling with Modules; Virtual Hosting; SSL, Loadbalancing& Clusters, VMware ESX and ESXi, Oracle Virtual Box and Microsoft Virtual PC.

Network Protocols: DHCP, DNS, SNMP, SMTP, Ethernet, NFS.

Databases: Oracle 8/9i/10,11G,DB2 and MySQL.

Open Source Tools & Other Exposure: Nagios, Introscope, Splunk, Puppet, Windows 2000/2003/2008 Server Installation & administration, Antivirus Software s, MS Outlook; Knowledge on web development, graphics, Shell Scripting, OS Administration basics,Power8/9, Seeburger BIS,Java Script, Java/J2EE

PROFESSIONAL SUMMARY:

Confidential, Woonsocket, RI

Linux System Administrator

Responsibilities:

• Installation & configuration of Red Hat Enterprise Linux, Fedora and CentOS, Maintenance & System Administration.
• Build new Virtual machine and physical server IP bonding for load balancing and fail over, Firewall, SELINUX Managing the VMWare ESX and ESXi server 5.5, 6.5 based on requirement
• Installing and managing Virtual Center 5.5.
• Developed splunk infrastructure and related solutions as per automation toolsets.
• Managing package install/upgrades using YUM and RPM.
• Worked with Openstack services like Horizon, Nova, Swift, Heat AND Glance.
• Implemented and maintained services running on Linux and server platforms deployed in AWS ec2 AND Openstack based private cloud.
• Performed data migration across multiple UNIX/Linux servers
• Bootstrapped newly build servers using chef recipes.
• Configured LDAP server and LDAP client on Linux machines for authorization and authentication.
• Worked with TCP/IP network configuration.
• Install and manage security reporting tools used to monitor changes to the Active Directory.
• Performed hardware and software installation, upgrade and maintenance, patch administration, kernel modification/upgrade, file system management, performance and security analysis, and network configuration/tuning.
• Implementation and maintenance of DHCO, NFS, NIS, DNS Mailing List, Sendmail, FTP and Apache SMTP.
• Implementation and troubleshooting of network services like NFS, FTP, NTP, Telnet, SSH.
• Worked on daily work orders which included configuration of file systems using LVM and Multipathing.
• Backend Solution, day to day sys Admin & monitoring File system & disk Management, wrote UNIX shell scripts for automated installations, to extract logs using Bash and Python.
• Responsible for maintaining security on all UNIX system for regulatory compliance.
• Experience with ticketing tools such as Jira and team track.
• Provided customer support, help/troubleshoot users to resolve server, network and other system wide problems

Enviorment: Red Hat Enterprise Linux, CentOs, AWS, Chef, VMware, LDAP, Tivoli storage Manger, EMC Power path, DELL PowerEdge 6650, Tivoli Net Backup

Confidential, Philadelphia, Pennsylvania

Linux Administrator

Responsibilities:

• Worked on a very large environment with more than 10000+ servers on different Data centers, vCenters and AWS East&West regions, running different operating systems which are managed by Puppet and CF Engine.
• Coordinated in building UNIX/ Linux platforms for different applications, troubleshooting and creating technical documentation. Responsible for ensuring infrastructure integrity, optimal performance and maximum service availability by recommending best practices for component maintenance, identifying problems and inefficiencies in the current environment and making strategic recommendations for future improvements.
• Administration of RHEL 5/6/7 which includes installation, configuration, testing on both physical and virtual machines.
• Managing and supporting a multi-cloud environment which includes AWS, and Azure
• Worked with Multiple puppet masters and multiple DB servers which is active on 1 server and replicated to another standby instance, and used Round robin and vip to distribute the puppet traffic from the agents to all the masters equally.
• Installed and configured Apache/2.0.63 on RHEL 6, Integrated Apache Web Server to communicate with Web Sphere
• Responsible for writing modules and manifests in the Puppet server and to handle the client servers by defining them using node definitions.
• Used rspec-puppet tool to verify that our Puppet manifests satisfy certain expectations without even having to run Puppet. Based on this testing framework for Ruby programs, wrote test cases for Puppet manifests that are especially useful to catch bugs caused by regressions and refactoring problems.
• Used Gitorious open-source & migrated to Git-Hub Enterprise as Source code hosting service.
• Implemented Choke-Point architecture in our environment for the users to login through the jump-servers, and to prevent users from directly logging into the systems.
• Worked on both Legacy puppet with versions 2.6 to 3.4 and with other versions 3.5,3.6,3.7 and 3.8 which uses Hiera to manage the classes through the hiera.yaml hierarchical structure to keep the site-specific data out of the manifests.
• Responsible for actively involved in Change board meetings and responsible for creating changes and implementing them mainly in Production environment.
• Installation and administration of DNS, NIS & DHCP servers on Linux servers.
• Used Jira and Service now as ticketing tool systems

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x,7x, CentOs 7,, Apache, NGINX,Puppet 3.4, 3.5,3.6,3.7 Chef,3.6, Veritas Net backup8.0.8.1, VMware Vsphere ESX4.0., 4.1

Confidential, Rochester, NY

Linux systems administrator

Responsibilities:

• Supported 300+ Server in Dev, QA, Staging and Production environments plus primary support to all kind of issues for Redhat 5.x &6.x,7x Linux
• Servers support included NFS, NTP, FTP, users setup/troubleshooting
• Implementing appropriate permissions for files and folders and Managing Users and Groups
• Creation and Maintenance of User Accounts file systems and successfully created logins IDs on large number of servers
• Installation, Maintenance and Administration of Red Hat Enterprise, SUSE and CentOS on VMS and physical server.
• Monitor Disk space and space as needed in LVM
• Installing and upgrading patches and packages on RHEL 5.x and 6.x servers using RPM, YUM and third party software applications.
• Limiting user account privileges using SUDOERS
• Installation of Web sphere application and mange users and service account with nopassword option in sudoers file to manage Webshere application.
• Installation of Database servers and users management such as Oracle, MYSQL, SQL Server.
• Installation and configuration of Web /Application Server Apache-Tomcat
• Monitoring and install or updates patch software’s, firmware, and security paches for all applications in installed infrastructure via Redhat network.
• Management of Puppet automation tool including installation of puppet agent on client.
• Work on security compliance of the servers which include TCP/IP vulnerability fix, security patches management, password policy using IBM internal tool ITSAS
• Configure and setup Linux server samba protocol
• Responsible for system configuration and installation of software applications, operating system upgrades.
• Architected and implemented automated cloud infrastructure using Chef.
• Implemented rapid-provisioning and life-cycle management for Ubuntu Linux using Amazon EC2, Chef, and custom Ruby/Bash scripts
• Installation and configuration of SAMBA x server for interface between Linux servers and Windows servers to share files
• Create Veritas Cluster configuration through command line tools
• Work on installation of VMware ESX5.5, migration of VMs and data storage, migrating workloads from OEL to RHEL, patch management, snapshot and template and clone
• Developed 2 unique frameworks for the eCommerce, Configure Transaction System Settings, payment gateway setting and configure credit card options.
• Configuring, administering and trouble shooting of NFS, AutofS

Environment: Red Hat Enterprise Linux 4.x, 5.x, 6.x,7x VERITAS Volume Manager, Samba, Oracle RAC/ASM (11g), Java/J2EE, EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Puppet 3.4, 3.5, Chef,3.6,Veritas Net backup 7.5.

Confidential, Irving, TX

Unix/Linux Systems Administrator

Responsibilities:

• Installed, Configured and Maintained RedhatLinux 4.x, 5.x&6.0 on SPARC, x86 and Blade Centers.
• Supported Redhat servers in Production and Development environments.
• Worked on Virtualizing Redhat servers using vSphere 4.1/5.0 and managed ESX servers using vCenter and also worked with ESX Cluster and vMotion.
• Installed and Configured Redhat Linux Kickstart and booting from SAN.
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC).
• Performed SAN Migration on RHEL servers.
• Installation and configuration of backup clients like Veritas Net Backup on Linux servers.
• Used bash, and Perl to automate most of the daily activities like log monitoring, log rotation and purging, proactive systems monitoring including disk error detection.
• Experience working with HP Openview client and server configuration.
• Experience in writing scripts to automate jobs and debugging scripts.
• Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
• Installation of Redhat EL 4.x, 5 using Kickstart/PXE and SuSe Professional desktop 10x.
• Installation and support of various applications like Weblogic server 10, Websphere 6.1, JBoss 4.x, Apache 2.x.
• Installation and configuration of Puppet agent on client
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on Redhat Linux.
• Mirroring of root disks using Hardware Raid Controller on HP & Dell HW.
• Managed 100 + UNIX servers running RHEL, HPUX & Solaris on Oracle HP and Dell server including blade centers.
• Experience configuring Emulex Converged Network Adaptors by Installing One Command on RHEL servers.
• Creating volumes using storage for VMAX Array on Redhat& Solaris servers.
• Data migration at Host level using Red Hat LVM, Veritas Volume Manager and Solaris LVM
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.

Environment: Redhat EL 4.x, SuSe 10, IBM x3650,IBM HS22 Blade Center, T2000, T5240, V240, /V880/890, BL460c,, EMC-AvamarNetbackup, IBM Storage Manager, IBM power7/8,HP, Cisco Works, Korn shell, Puppet 3.0, VMware ESX3.5, VMware Vsphere ESX4.0.

Confidential, Chicago, IL

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Red Hat, SUSE, Ubuntu and AIX
• Installation Packages and patches.
• Supported 24/7 high availability production servers.
• Monitoring, tuning to enhance the system Performance.
• Configuration and Administration of DNS, NIS, NIS+, NFS.
• Installation, configuration and remediation of various Security software
• Expertise in VMware Virtualization using Vsphere 4.0.
• Installation and configuration of Netscape and Apache web server and Samba Server.
• Jumpstart installation.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Interaction with vendors for Hardware and software supports.
• Disk and File system management through Veritas Volume Manager, LVM and SVM.
• Installation and configuration of Apache and Websphere Server in Linux Platform.
• Backup management, creation of Volumes and pools and scheduling the job.
• Installation and configuration of Network Printer with Centralized control of print client.
• Database Backup and Recovery. Performance Monitoring and Tuning
• Planning and setup of Disaster Recovery Servers.
• Trouble shooting of day-to-day system and user problems.
• Documented (formally) system requirements
• Trained customer user community.
• Assisted team members in contracts, availability / problem resolution, technical Tier 1/2 support and security.

Environment: RedHat, SUSE, UBUNTU, Windows NT 2003/2000/ XP, NT, Redhat 5.x, SUSE, Sun Enterprise 450/420R/250 Servers,Veritas Net backup 7.0 SPARC server 1000.