SUMMARY

• 8+ years of experience specialized in UNIX System Administration working on server - based operating system; kernel configurations on Red hat Linux, Cent OS, SUSE, Debian 8.3, Ubuntu 15.10 and Solaris 11.3 (32 bit & 64bit) Networking, kernel Parameter & Tuning, Trouble Shooting System & Performance Issues, Package Management and Patch Management.
• Extensive experience in installation, configuration and administration of Solaris 11/10/9/8/7, Redhat 7.2/6.7/5.11 , IBM AIX 7.2/7.1/6.1/6
• Extensive implementation and troubleshooting experience under Client Server Systems.
• Configured Kickstart servers for complete hands-free installation of workstations, with custom profiles, begin/finish scripts and custom package suites/clusters.
• Experience on installation of Web Sphere application.
• Experience on installation of VMware ESX, ESXI migration of vm’s from one host to another host, migration of VM’s from one data storage to another data storage, patch management.
• Working experience on Windows Active Directory and LDAP.
• Experience on joining Linux server to Active Directory using win bind and samba protocol.
• Management of Puppet automation tool including installation of puppet agent on client server.
• Integration of various network related services like NFS, NIS, and DNS.
• Installation and configuration of Apache, Tomcat / Web logic on Linux.
• Database Installation includes Oracle, SQL, and MYSQL.
• Monitor Disk space and space as needed in LVM.
• Setup and administration of VERITAS Volume Manager and HA Clusters.
• Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP, and SNMP.
• Hands on experience with ticketing tools such as Remedy and Quick base.
• Experienced in installation of Operating Systems, Packages and Patches, adding Peripheral, maintaining user accounts, System Security, backup/recovery, performance tuning, troubleshooting at various levels.
• Management of User accounts, System security, kernel performance monitoring and tuning.
• Basic knowledge of networking devices such as F5 load balancers.
• Web /Application Server Tomcat, Apache, Weblogic.
• Willingness to work on flexible hours for production, backup and on-call support for 24/7 environments.
• Good communication skills self-motivated with a high degree of attention committed to work.

TECHNICAL SKILLS

Operating Systems: Linux (RedHat, CENTOS), Solaris 10/9/8, HP-UX 11.0, 11.11, IBM AIX (4.3/5.x), HPUX11i V1, V2 & V3, VMware ESX, SLES 8,9,10 & 11.

Hardware: M5000, M8000, T5220, T5240 Sun E15K, E25K, Sun Fire 6800/4900/3800 , Sun Fire 490/280, v880/v890, Sun Enterprise Servers E6500, E4500, E3500, Work Group Servers E450, E420, E250, E220, Netra 1405, Netra X1, Ultra 80, 60, 30, 10, 5, 2, 1, Intel Servers

Networking: TCP/IP, NIS, NFS, FTP, DNS, DHCP, Samba, Apache, SMTP, SSH, IP-Tables.

WEB Technologies: Tomcat, APACHE 2.x, 3.x, Web Logic (8/9/10) & Web Sphere 4.0/5.0

Programming, Scripting Language & Databases: RDBMS,SQL,MySQL,PostgreSQL,dBase,Access,Oracle,Sybase, MSSQL, C, C++,UNIX Shell Scripting, Powershell, Perl Scripting, Python, Ruby, HTML,Mongodb.

Backup Management: Veritas Net backup 4.x/5.x/6.x, Ufsdump, Ufsrestore, TAR, cpio, dd, Tivoli, Symantec Netbackup 7.x, NetApp,Legato Networker, Solstice Backup, Veritas Netbackup BusinesServer, Veritas Backup Exec, tar, cpio, dump, Solaris AdminSuite, Solstice DiskSuite, Splunk Solaris Admin tool, Linux Logical Volume Management.

ThirdParty Software: VERITAS Volume Manager, VERITAS Cluster Service (VCS), HP Service Guard, Sun Cluster, EMC Storage, RAID Technologies, SSL, Docker, Splunk, Cobbler, Openstack, Chef, Puppet agent, Puppet Dashboard, and Puppet DB.

Protocols: TCP/IP, UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET

Web Server: Apache web server, Apache (http), Apache-tomcat, and Apache HTTP Server.

Mail Server: Sendmail, Postfix, Zimbra.

FTP Server: Lftp, Go Anywhere, WU-FTPD, Proftpd

Monitoring: Nagios, Zabbix.

Naming Service: NIS/YP, NIS+, DNS, LDAP,LDOMs

O/S-level virtualization: Solaris Containers

Cluster service: Redhat cluster service

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Sr. Linux Admin

Responsibilities:

• Installation & Configurations of Red Hat Enterprise Linux, Fedora Linux and CentOS, Maintenance & System Administration.
• Worked with OpenStack Services like Horizon, Nova, Swift, Cinder, Neutron, Keystone, Heat and Glance.
• Create and managed OpenStack instances, flavors, networks, and attaching volumes using Horizon and CLI.
• Implemented and maintained services running on Linux and server platforms deployed in AWS EC2 and OpenStack based private cloud.
• Deployed Puppet agent, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Installed and configured Linux/Unix and Windows operating systems on VMware server.
• Worked with KVM and VMware.
• Wrote shell scripts using languages like Bash, Python, and Perl to automate day to day admin jobs.
• Configured LDAP Server and LDAP Client on Linux machines for authorization and authentication.
• Worked with TCP/IP network configuration.
• Administered and Configured Logical Volume Manager which involved create and modify file system, logical volume, Physical volume, Volume groups, mirroring and un-mirroring of volume groups, hot spare physical volume.
• Performed upgrade on Red hat Linux whenever required.
• Performed hardware and software installations, upgrades, and maintenance, patch administration, kernel modification/upgrades, file system management, performance and security analysis, and network configuration/tuning.
• Prepared Windows/Unix security standard preparation document and system check procedures to keep the systems secured & updated.
• Backend Solution, Day to day sys Admin & Monitoring, File sys mgmt.& disk mgmt.,
• 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.
• Implementation and troubleshooting of network services like NFS, FTP, NTP, Telnet, SSH.

Environment: Red Hat Enterprise Linux, Fedora Linux, CentOS, AWS, OpenStack, Puppet, VMware, KVM, Shell-Scripting, LDAP, LVM0.

Confidential, Charlotte, NC

Sr. Linux Admin

Responsibilities:

• Senior Systems Administrator working in a server Enterprise facility.Provided support for more than 700 Redhat, Cent OS servers.
• Expertise in creating VM Templates, cloning and managing Snapshots.
• Configured and deployed multiple VM’s using Vsphere client.
• Expertise in configuring Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes utilizing clusters.
• Installing and configuring Puppet, writing manifests to automate day-to-day activities.
• Managed 500 servers using puppet to install and update system, application configurations.
• Experience in configuring monitoring tools like Xymon.
• Performed system performance monitoring, created alerts and benchmarking for performance analysis on all application & production servers.
• Developed multiple shell scripts for system monitoring.
• Monitored server and application performance & tuning via various stat commands (top, sar, iostat, vmstat, netstat, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc for SUN Solaris and RHEL Servers.
• Provided troubleshooting solutions through automations and monitoring system stats on Splunk applications with the help of Splunk-dashboards during new releases.
• Expertise in handling crisis during heavy load on servers and maintaining zero downtimes.
• Working in war-room’s, providing continuous technical support throughout release and production period.

Environment: Redhat 5 & 6; Centos; HP Gen 8 Blade and Rack mount Servers, IBM S/6000, MySql Database servers, Veritas NetBackup, IBM Storage Manager, Cisco UCS, VMware ESX 4.x.

Confidential, Richmond, VA

Linux Admin

Responsibilities:

• Design, implement, and maintain large-scale environment of Unix/ Linux servers, backup systems, and the associated software and hardware to ensure maximum performance, efficiency, scalability, and availability.
• Configure UNIX/ Linux environments with NIS/NIS+ configuration and maintain
• Install and maintain Version controlling (Clear Case Multi site) server for development environment
• Involved with J2EE environment setup. Install, configure, tuning, and support Weblogic, JBoss, TomCat and Apache servers for test and production environment
• Installation and configuration of RedHat Enterprise Linux enviornment: regular OS Installation
• Install Redhat provided third party package according to the service requirement
• Write kickstart profile according to service requirement and install OS with kickstart with support of nfs and web server
• Implement Software label raid configuration (LMV) configure local file system for the system according to service requirements.
• Configure single/multiple network interface for network connectivity configure network file system for service requirements
• Install and update software/applications with yum utilities
• Implement local/remote user authentication service (nis, LDAP)
• Implement name regulation service for the system (DNS)
• Implement system security trough Selinux and iptable.
• Installation and configuration of Sun Solaris environment:
• Regular OS Installation
• Use Jump start for OS installation with support of Jump Start server
• Configure local file system according to service requirements
• Configure single/multiple network interface for network connectivity
• Configure network file system for service requirements
• Configure large file system with Solaris ZFS
• Configure and maintain remote user authentication service (nis, nis+, LDAP)
• Configure the global zone
• Prepare file system and zone root path for non-global zone
• Identify IP address and hostname for non-global zone
• Use zonecfg command to create non-global zone and set IP address and other environment for non-global zones.
• Use zoneadm command to install and maintain all non-global zones.
• Configure and maintain Solaris environment with SMC.
• Administer tools for Repository creation and maintenance of accounts using tool upgrades and end user support for SVN.
• Mirrored local repository from build using GIT.
• Configure and implement OS level virtualization with Solaris Zoning and VMware

Environment: RHEL 4.x/5.x/6.x, Solaris 9,10&11, HPUX, Centos, SUSE 10, 11, VERITAS Volume Manager 3.x/ 4.x, VERITAS Storage Foundation 5, Redhat Cluster, VERITAS Cluster Server 4.1, Tripwire, NFS, DNS, SAN/NAS.

Confidential, Tucson, AZ

Linux Admin

Responsibilities:

• Installed and configured several hundred Red Hat Blade and VMware ESXi 4.1, 5& 5.5 Virtual Environment.
• Configured Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes.
• Installing and configuring Red Hat Enterprise Linux 5, 6.1 using kick start servers and virtual
• Responsible for installation, Configuration and administration of Oracle10g/11g database on Linux and Windows 2003 Servers and also an integral part of the backup and recovery.
• Installing and updating packages using YUM (custom YUM servers/repositories) and Red Hat Satellite Server.
• Configured and Administered Apache, VSFTPD services, MYSQL and Tomcat.
• Participating in 24x7 production on-call support of Linux and provided technical support to users.
• Configured and deployed patches, upgrades, bug fixes on both physical and virtual Red Hat Linux servers using satellite servers.
• Implemented rapid provisioning and life cycle management for Redhat LINUX using kickstart.
• Expertise in security hardening (iptables/selinux) major Production Servers, and compiling, building and installing web server based Linux tools.
• Experience in performing, uploading and upgrading new firmware on the Interconnects and Chassis
• Proficient in providing support on the deployed Red Hat Enterprise Linux & Sun Solaris servers from both operating system level and application Level.
• Expertise in configuring Red Hat Cluster Nodes for any legacy applications and verified the daily health check on the Cluster Nodes utilizing clusters.
• Expertise in creating VM Templates, cloning and managing Snapshots.
• Expertise in working with MySQL databases, Apache Web server, Tomcat Application Servers
• Troubleshooting any performance or configuration issues with MySQL and Oracle.
• Expertise in hardening, Linux Server and Compiling, Building and installing Apache Server from sources with minimum modules.
• Monitoring and troubleshoot backups and schedule Cron jobs.
• Experience in scripting using BASH & PERL
• Worked on Mail Server, Samba Server, and Apache Server.
• Worked on configuringNIS, NFS, DNS, DHCP, FTP, FSTP, Telnet and RAIDlevels.
• Extensive experience in network managementTCP/IP, NIS, DNS, NFS, VLAN.
• Experience in deploying several sets of Linux guest builds from VMware templates using PowerCLI as well as Red Hat Satellite Server.
• Experience in deploying RHEL 5.x, 6.1 in a blade environment.
• Patch management of servers and maintaining server's environment in Development/QA/Staging/Production.
• Resolving assigned remedy tickets and remedy tools in Development/QA/Staging/Production.

Environment: Red Hat Enterprise Linux, HP-UX, CentOS AWS EC2, VMWare and VSphere, Shell scripting, Apache, samba, LDAP, Web Sphere& Web Logic Application Servers, Unix Workstations.

Confidential

Unix/Linux System Administrator

Responsibilities:

• Supported Solaris/Linux servers in production/QA/Development Environment, includingSolarisZone and RHEL VM's.
• Installed ESXi 4.1Hypervisor on HP Servers.
• Installing, configuring and maintainingapache, samba,Web Sphere& Web Logic Application Servers and Nagois .
• Worked on VMware, VMware View, vSphere 4.0.
• Installation of systems using Jumpstart forSunServers and Kickstart for RHEL on HP HW.
• Configure, support and perform routine maintenance of hardware and software for Linux andSolarisservers.
• Automation of various administrative tasks on multiple servers using Puppet.
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Proficient in installation, configuration and maintenance of applications like Apache, LDAP, PHP
• Involved installing and managing different automation and monitoring tools on Redhat Linux like Nagios, Splunk and Puppet.
• Resolved config issues and problems related to OS, NFS mounts, LDAP user ids DNSand issues.
• Experience in creation and maintenance of ZFS file systems / set quotas.
• Regularly applying patches for Redhat Linux,Sunand HP systems.
• Develop Unix Shell scripts for regular and periodic jobs and also for sysadmin jobs.
• Extensively worked with Business, Application, Database, Network and SAN Team for project requirement.
• Project co-ordination and providing technical advice on system to management
• Plan, document, review and maintain system administration guidelines and policies
• Manage and co-ordinate Unix and Linux administration tasks
• Ensure Data Center operation meets required service levels
• 24x7 support for the UNIX servers. Rotating on call pager responsibilities for Production environment.

Environment: Solaris9 & 10, RHEL 4.X,5.x,6.x,SunUltra SparcT5220,T5240,; HP DL360, 380 & 580; VMware, SolsticeDisk Suites, ZFS; Volume Manager (VxVm) 4.1, Veritas Cluster server (VCS), VMware.

Confidential

Unix System Engineer

Responsibilities:

• Provided 24 X 7 on call support (locally and remotely) for around 500+ sun servers in a Data Center Production Environment
• Performed Red hat Linux Kick-start Installation - Sun Solaris Jump start Installation.
• Preformed Installation, adding and replacement ofDisks, CardsandMaintenanceof SUN Servers.
• Installed, upgraded and loaded Patches and Packages on Sun Servers.
• Attendedto users, developer problems; did troubleshoot the system and end user issues.
• Setup primary LDOMs and quest LDOMs on T5220 Sun servers in the development environment.
• Familiar with virtual technologies such as Zones, VM's and or LDOMs
• Created and maintainedOperating System Installation Documents.
• Monitored system performance, tune-up kernel parameter, added /removed /administered hosts, users.
• Scheduled Jobs usingCRONTABandAT Utility and wrote shell scripts to automateSystem Process.
• ManagedNIS, NFS and Send mail Server.
• Added more resources likeMemory, Disksand increasing theSwap.
• Performed User and Group Management usingAdmintool.
• Involved in documenting of Linux and Windows environment and configuration details including documentation of solutions for any issues that have not been discovered previously.

Environment: Solaris 8, Sun Enterprise, Servers E4500 and E3500, Sun SPARC 1000, LDOMs Perl, shell Scripting, CRONTAB/AT.