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Linux/vmware System Administrator Resume

5.00 Rating

Cary, NC

SUMMARY

  • Over 6+ years of experience in System Administration in areas of Red Hat Enterprise Linux, VMware, Windows in Production Support environment.
  • Expertise in installation, administration, patches, upgrades, Configuration, performance tuning and troubleshooting of RedHatLinux4.x/5.x/6.x, Centos 5.x/6.x, Microsoft Windows 2000/2003/2008 R2/2012 environments and VMware Virtualization Esx/Esxi 4.0, 5.x.
  • Experience in virtualizing RHEL and Windows environments withVMwareESX 3.5, 4.0 and ESXi 5.0/5.1 on Dell PowerEdge, HP Proliant and Confidential UCS Hardware.
  • Worked with HP DL and Dell Power Edge Model rack, HP blade centers like HP C6000 & C7000 and Confidential UCS.
  • Expert in Jumpstart and Kickstart Installation Methods.
  • Installing and updating packages using YUM (custom YUM Servers/repositories) and Red Hat Satellite Server.
  • Good knowledge in configuring RAID using RAID Manager and LVM in SAN and Host based storage arrays.
  • Worked with Database administrators to tune kernel for Oracle installations.
  • Experience working with Tools like CHEF and Puppet for Application configuration automation on multiple servers.
  • Experience setting Multipathing with EMC Powerpath onLinuxand Solaris servers.
  • Hands on experience with UNIX file editors like vi and vim.
  • Providing 24/7 technical support to Production and development environments.
  • Expertise in Veritas Clustering, Redhat Clustering, Veritas Volume manager and Veritas Net Backup.
  • Expertise in administering File servers and Print servers.
  • File system tuning using Veritas File System (VxFS) and Logical Volume Manager (LVM).
  • Expertise in Installing and Managing LDAP, NIS, NFS, FTP, DHCP, SAMBA, SSH and DNS.
  • Experience in shell scripting using sh, bash and ksh.
  • Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in RedHatLinux.
  • Strong experience and understanding of Auto mounts, TCP/IP, SMTP and Printer configurations.
  • Installed and configured Confidential Web Sphere Application Server 3.5, 4.0, 5.0 on RedHatLinux.
  • Created shell scripts to take backup of Oracle database.
  • Experience with installation and support of applications which include Apache, Tomcat, Weblogic, Websphere, Jboss.
  • Expertise in Windows 2000/2003/2008 R2 server administration and active directory administration.
  • Experience in installing, managing and administering Windows 2008 R2 and 2003 based Domain controllers, Backup/Additional Domain Controllers.
  • Experience and Strong Knowledge of Virtualization technologies like VMware ESX/ESXi.
  • Worked in the area of Virtualization with VMware vSphere, ESX 4.0 servers, ESXi4.1, 5.0, 5.1, vCenter server 4.0, 5.0, 5.1 and vCenter Converter, VMware Update Manager, VCloud director, VCops.
  • Created and managed VMs (virtual machines) and also involved in the maintenance of the virtual machines.
  • Experience with enterprise backup systems and disaster recovery operations; familiarity with SAN technologies; solid understanding of Virtualization implementation with shared storage fiber channel, ISCSI, NFS / VMFS strategies for performance and optimization.
  • Expertise with IP sub - netting, VLANs, Load Balancing, and High Availability (HA) architectures.
  • Strong experience with the VMware HA (High Availability), Fault Tolerance, Distributed Resource Scheduler (DRS),Host Profiles, Templates, Clones, Snapshot Manager, vmotion, storage vmotion.
  • Strong analytical, technical and troubleshooting skills.
  • Experience in the V2V and P2V migration of Physical servers to VMware ESXi hosts.
  • Knowledge of maintaining Business Continuity and performing Disaster Recovery (DR) using VMware Site Recovery Manager (SRM).

TECHNICAL SKILLS:

Operating Systems: Linux(RedHat 3.x,4.x,5.x,6.x, Centos 5.x, 6.x), Windows XP/7/NT/2003/2008 R2/2012.

Virtualization: VMware Workstation, VMware Server, VMware Infrastructure 3, 4.0, 5.0, 5.1 and 5.5 (ESX/ESXi server & Virtual Center), VMware vCenter Converter, VMware Lab Manager, VMware SRM, VMware ThinApp and VMware Virtual Desktop Manager.

Hardware: HP Proliant DL 350, 550 G3, G4, G5 & G6, HP Blade C6000 & C7000, Dell Power Edge, Confidential UCS.

Tools: VERITAS Volume Manager, VERITAS Net backup 5.1, Nagios, Puppet, Chef, Web Sphere Application Server 3.5,4.0, Netscape/iPlanet Server, MQSeries, WebLogic Server, Active Directory.

Programming Languages: KSH, CSH, Bash, Python and Perl programming.

File Editors: UNIX Vi and VIM.

RDBMS: Oracle 9i/10g/11g, MSSQL and MySQL.

Networks: NIS, NFS & DNS and Firewalls.

Protocols: TCP/IP, FTP, SSH, SFTP, LDAP, SSL, SCP, SSL, ARP, DHCP, TFTP, RARP, PPP and POP3.

PROFESSIONAL EXPERIENCE:

Confidential, Cary, NC

Linux/VMware System Administrator

Responsibilities:

  • Experience in Installing, Configuring and Maintaining RedHatLinux (RedHat EnterpriseLinux4.x, 5.x & 6.x) Servers and Windows 2003/ 2008 R2 Servers on Power Edge Model rack, HP blade centers like HP C6000 & C7000 and also Confidential UCS environment.
  • Experience supporting RedHat servers in Production and Development environments.
  • Experience in Virtualizing RedHat servers using vSphere 4.1/5.0/5.1 and managed ESXi servers using vCenter and also worked with ESXi Clusters.
  • Installed and Configured RedHat Linux Kick start and booting from SAN and managing multipathing at boot level and OS level using EMC Powerpath.
  • Experience in writing scripts to automate jobs and debugging scripts.
  • Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
  • Conduct incident management trend analysis within the supported production environment.
  • Administered Volume groups and volumes using Logicalvolume manager.
  • Installed/Configured Websphere 5.x/6.x and other Application Servers and Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment on RedHatLinux.
  • Configured File Systems, users and group for Oracle and Websphere.
  • Expertise in Configuring Bonded Interfaces for networking and Managing storage using LVM in RHEL and CentOS Operating Systems.
  • Configuration and Administration of NFS, DHCP, FTP, LDAP and Sendmail.
  • Experience using CHEF automation tool to deploy various applications.
  • Responsible for Kernel tuning, upgrading of memory and swap area onLinuxservers.
  • Provide support to the application team and troubleshoot the system related, networking issues and application errors during deployments and performance tests.
  • Involved in Designing and Implementing host level migrations and replacing virtualization using P2V and V2V using VMware converter and Platespin.
  • Updating and upgrading ESXi servers, vCenter Server, using vSphere Update Manager and VM Tools through manual updates.
  • Managed ESXi hosts using vCenter Server/ vSphere Client and VMware Web Client.
  • Performed vMotion and Storage vMotion of Virtual Machines across different cluster with respect to security policies and application development requirements.
  • Creation of hot and cold Clones Templates from Virtual Machines (VMs). Deployed Virtual Machines from Templates based on requirements and build documents.
  • Performed Virtual Machine Snapshots for Application machines for Migrations and failback.
  • Experience with creating Standard vSwitches(vSS), Distributed vSwitches(vDS). Isolated networks were created with separate vSwitches and VMkernel Port Groups. Third party tools such as Wireshark packet capturing tool were used for network traffic monitoring, vMotion, storage and Fault-Tolerance (FT) security and stability.
  • LUN creation and storage mapping along with Multipathing and VAAI.
  • Management and administration of Windows 2008 and 2008 R2 Active directory (Created Accounts, Reset Passwords, and Allowed Access to different Directories using NTFS permissions)
  • Handled VMware solutions to support multiple storage connectivity options such as Fiber Channel-SAN, iSCSI, NFS (NAS).

Environment: Red Hat EnterpriseLinux5.x/6.x, Windows 2003/2008 R2/2012, VERITAS Volume manager, Veritas File System, Veritas Cluster Server, VMwareESX/ESXi sever 4.0/5.0, VMware Update Manager, SRM, VCops, Oracle 11g, HP Proliant servers BL460, BL685, Confidential UCS Manager,Active Directory, Solarwinds, Remedy.

Confidential, San Jose, CA

Linux/VMware Administrator.

Responsibilities:

  • Installation, Upgrading and deployment ofRHEL 5.x,6.x on X-86 based HP BL460 G5, G6 and G7 Hardware and Confidential UCS.
  • Installation, Configuration and Administration of VERITAS Storage Foundation Suite, VxVM, VxCS and Vxfs for LinuxServers.
  • Installing and setting up Oracle and Websphere onLinuxfor the development team.
  • Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
  • Worked with Database administrators to tune kernel for Oracle installations onLinux.
  • Configuration of Kernel parameters as per application requirement.
  • Organizing DR (Disaster Recovery) server tests to make sure the infrastructure is correct and the DR servers are working as expected as in production servers.
  • Worked with storage teams to split the R1 and R2 disk groups to enable the SAN disks to read/ write mode on DR servers and worked with DBA’s and software system analyst to troubleshoot and testing the functionality of their applications for both Prod and DR servers.
  • Implementation of SSH for secure transfers and implementation of PKI between servers to enable password less logins between servers.
  • Worked on DNS, NIS Master Slave Servers along with required clients.
  • Worked on different backup methods for backing up the data when upgrading and migration of Operating system
  • Backups,Tar, rsync, rsnapshot and rdiff. Package and patch administration onLinux.
  • Implementation of High Availability using Veritas Cluster Server 5.0 and 5.1.Worked on scripting using shell, bash and Korn.
  • Experience in installing, administering, updating/upgrading ESX/ESXi servers, Virtual Center servers and windows virtual machines using VMware Update manager and manual upgrades.
  • Set up V-Motion, High Availability (HA), Distributed Resource Scheduler (DRS), and relatedVMwareproducts such as VM Workstation.
  • Worked on Migration concepts like vMotion and Storage vMotion.
  • Application virtualization using VMware ThinApp 4.5 version.
  • Assisted in P2V conversions of Windows servers using VMware vConverter & Platespin.

Environment: Red Hat EnterpriseLinux5.x,, VERITAS Volume manager, Veritas File System, Veritas Cluster Server, VMwareESX/ESXi sever 4.0/5.0, Oracle, HP Proliant servers BL460, BL685,Enterprise scheduling Product.

Confidential, Atlanta, GA

System Administrator.

Responsibilities:

  • Administration and support ofLinuxservers (Red HatLinuxand Centos).
  • Upgraded Red HatLinux from4.x to 5.x.
  • Duties include user administration; scheduling jobs using crontabs, file system maintenance, scripting and automation.
  • Built the servers from the scratch level i.e. loading OS, creating file systems and configuring network adapters and HBAs.
  • Responsible for Kernel tuning, upgrading of memory and swap area on servers underLinux.
  • Configured test environments in VMwareESX Server to build guest OS using cloning.
  • Install and configure DHCP, DNS (BIND, MS), web (Apache), mail (SMTP, IMAP, and POP3) and file servers onLinuxservers.
  • Experience in Network Monitoring Application Software such as Nagios.
  • Configured and performed troubleshooting Samba over Red HatLinuxServers.
  • Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
  • Performed administrative tasks such as System startup/shutdown, Backup strategy, Printing, Documentation, User
  • Management, Security, Network management, dumb terminals and devices.
  • Maintained availability, increased capacity & performance of production machines by upgrading their hardware & firmware.
  • Associated with tasks involved in SAN migration project.
  • Worked in a fast-paced 24x7 production environment comprising Red HatLinuxand Windows Servers.
  • Performed troubleshooting of operating system and software infrastructure issues on Domain Controllers, Member Servers, Server Clusters, and Virtual Machine Farms.
  • Configured the standard cluster settings on vCenter clusters.
  • Configured windows clustering for vCenter server high availability.
  • Upgraded Win Server 2003 to Win Server 2008 with minimum or null impact on services provided to customers.

Environment: Red HatLinux4.x/5.x, Centos 5.x, Windows 2003/2008 R2.Oracle 9i, EMC SAN (Symmetric), Netapp On Command Manager, ESX 4.0, Esxi 5.0, vCenter, vMotion, storage vMotion, DRS, HA, FT, Apache, Samba, Nagios, DHCP, SMTP, DNS, LVM, Shell Programming (bash, ksh), DELL PowerEdge 1650, HP, Confidential UCS.

Confidential, Jersey City, NJ

System Administrator (Linux, Windows)

Responsibilities:

  • Administration, Installation and maintenance ofLinuxand Windows Servers.
  • System monitoring and security. Wrote various shell scripts to monitor system services and trigger email and pager notifications.
  • Managing file systems and disk management using LVM. Creating and restoring the backups inLinux.
  • Installation, configuring all the hardware, peripheral, operating system and software to effectively deliver system time.
  • Configuration and administration of NFS environment.
  • Troubleshooting and fixing the issues at User level, System level and Network level by using various tools and utilities.
  • Maintaining updated documentation of all the Servers and the installed applications and patches.
  • Involved in the TCP/IP network configuration, Creating and deleting the user accounts across the location.
  • Monitored and maintained backups in Symantec.
  • Managing Remote Servers through Terminal Services Manager.
  • Maintaining corporate DNS system.
  • Routine maintenance activities for optimal performance
  • Installing and Set up Print servers in the Network.
  • Creating Virtual Sites and Directories in IIS and FTP server.

Environment: Red HatLinux3.x/4.x/5.x, Windows NT/2003, LVM, Active Directory, Networking, DNS, DHCP, TCP/IP.

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