Manager Management
Resume:
Vishnu Juvvadi
E-Mail: abi5w0@r.postjobfree.com
Expertise
> Over 7+ years of experience specialized in System Administratration
working on Sun Solaris, Redhat Linux, Suse Linux, AIX and Windows
environments.
> Certified Sun Solaris 10 System Administrator.
> Experience in administering Solaris & Linux. Experience in Installation,
Configuration, Backup, Recovery, Maintenance, Support of Sun Solaris &
Linux.
> Experience in Installing, upgrading and configuring RedHat Linux 3.x,
4.x, 5.x using Kickstart Servers and Interactive Installation.
> Experience in Installing, upgrading and configuring SUN Solaris 7, 8, 9
and 10 on Sun Servers using Jumpstart Servers, Flash Archives and
Interactive Installation.
> Worked on OS migrations, upgrade and BIOS and NIC firmware upgrades.
> Worked with Database administrators to tune kernel for Oracle
installations.
> Experience in Sun Solaris 10(Creation of Zones, Service Management
Facilities, Virtualization, Container based).
> 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 VxVM and Solaris volume manager.
> Configuration and administration of Fiber card Adapter's and handling of
SAN (SAN arrays; EMC, Netapp).
> Expertise in system and network monitoring tools Nagios and eHealth.
> 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 mgmt,
version control, service pack. & reviewing connectivity issue regarding
security problem.
> Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA,
SQUID, sendmail, ftp, remote access, security management and Security
trouble shooting skills.
> Experienced in Configuring Sun SMC, ALOM, ELOM and ILOM's.
> Experience on Webservers such as iPlanet Webserver 6.0 /Sun one web
server 6.3,6.5, Netscape Enterprise Server 4.0, Tomcat 3.x,4.x,5.x &
Apache Server 1.x,2.x.
> Experience in Installation and Configuration of JBoss on Sun Solaris
and Red Hat Servers.
> Experience in Installation of Oracle and MYSQL.
> Experience in implementing the workload Management (WLM) using cloning
and clustering.
> 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, Python
& Perl scripts.
> Team player with good management, analytical, communication and
interpersonal skills.
Certification
> Sun Certified System Administrator for the Solaris 10 Operating
System.
Education
> Master of Business Administration.
Technical Summary:
Operating System: Sun Solaris 10/9/8/7, Red Hat Linux 5.x/4.x/3.x, AIX
5.3/5.1 and Windows .
Hardware: Sun Ultra Enterprise Servers (E3500, E4500, E450, E420R,E250),
SunFire (6800/4800/ 3800/v880/V480/V100/V210/V240/V440/280R/15K/25K), Sun
workstations (Ultra 5, 10, 20, Blade 100,150, 2000). Sun Store Edge D1000 &
A5000, IBM P Series and F series, IBM RS 6000. HP ProLiant DL580 and
DL380, Blades, HPC Systems E2208, HiPerStation 8000, Sun Blade, IBM Blade,
IBM P Series and Dell Power Edge.
VMWare: VMware Infrastructure Client and VMware ESX Server 3.x/2.x.
Disk Management Tools: Solaris Volume Manager (SVM), ZFS, Zones, Veritas
Volume Manager, File system, Sun Solstice Disk Suite, Red Hat LVM.
Cluster: Veritas Cluster 5/4/3 (VCS), Sun Cluster 3.0, Oracle RAC 11g
(OCFS, ASM, raw devices), Red Hat Cluster Suite.
Network Protocols/Services: LDAP, TCP/IP, UDP, FTP, SFTP, HTTP/HTTPS, SSL,
NIS, NIS+, NFS, DNS, and DHCP.
Programming Languages: Unix Shell Scripting and Perl.
Mail Server: SendMail, IBM Lotus Notes, Microsoft outlook.
Architecture: Sun and Red Hat Linux Network/ HW /SAN / Software.
Office Productivity Software: Microsoft Office, Project, Visio,
Configuration Mgmt, Asset, Request, and Knowledge Mgmt.
Professional Experience:
Client: Acxiom
June '2010- Till Date
Conway, AR
Linux Administrator
> Installation, Configuration & Migration of UNIX and Linux operating
systems.
> OS cloning using System Imager. Create Golden client and copy the image
of golden client at system image server.
> Install new OS using system image of Golden client.
> Configure LAMP, RedHat Linux, Apache, MySQL and Php using GFS file
system.
> Installation Packages and patches.
> Rescan the storages on newly installed servers.
> Troubleshooting/Networking issue after migration.
> Installation, configuration and remediation of various Security software
> Worked with application team to start applications and resolve any issue.
> Disk and File system management through Logical Volume Manager including
GFS (Global File system)
> Analyze User Requirements; propose alternative solution in setting up
local area network and maintain existing network up and running.
> Redhat Satellite Server for upgrading and patching Linux Servers.
> Manager users accounts for the team access for Redhat Satellite Server.
> Troubleshooting hardware, software and configuration problems for various
protocols and topologies.
> Analyze, review and alter existing network to increase operational
efficiency or adapt to new requirement.
> Support and administer various network infrastructure components to
ensure uptime and reliability. Routine administrative tasks, like
troubleshooting and correcting problems in the existing network.
Environment: Red Hat Linux (RHEL 3/4/5), Logical Volume Manager, eHealth,
Veritas Cluster Server, Apache, GFS, EMC Powerpath, Symcli, Oracle
Client : City of Detroit
May '2006- May' 2010
Detroit, MI
UNIX Administrator
Responsibilities:
> Provided 24/7 on call support on UNIX Production Servers. Responsible for
maintaining UNIX security on Solaris and Linux.
> Installed, upgraded and configured Solaris 10/9/8, RHEL 5.x/4.x/3.x, AIX
and Suse Linux. This included Jump Start Installation, Kickstart
Installation, NIM and CD media.
> Installed RHEL 4 and RHEL 5 and updated the versions within the release.
> Migrated Suse and RHEL servers.
> Installed and configuration of VxVM, VxFS and VCS on various Servers.
> Installed Patches/Packages on and Solaris Servers and RPM packages on
Linux Servers.
> Management of UNIX user accounts, groups, directories and file
permissions.
> Administration of DHCP Server to get the IP Addresses Dynamically.
> Configuration and administration of DNS, LDAP, NFS, NIS, NIS+, Sendmail
and Weblogic in Solaris and Linux.
> Configuration and Maintenance of AutoFs.
> Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and
managed servers for applications to be deployed.
> Day to day VCS, VxFS, Sun hardware support, problem and change ticket
implementations, composing scripts, OS builds & upgrades along with day-
to-day Storage & Unix Administration.
> Tested and implemented Veritas Root disk migrations and upgradation for
most of the systems whose hardware has been upgraded during move.
> Configured/Maintained Zones, ZFS filesystem, Zone administrative
commands: zpool, zfs, zonecfg and zoneadm on Sun Solaris 10 Servers.
> Taking Backup and Restoring the data using dump and ufsdump.
> Solaris Performance Monitoring and Tuning using iostat, vmstat and
netstat.
> Configuration of Secured Shell (SSH).
> Installed/Configured Websphere and JBoss Application Servers.
> Scripting for automating changes during move to speed up process.
> Configured TCP/IP for Solaris 9 and 10 systems.
> Responsible for Monitoring and fine tuning system and network performance
for Solaris systems.
> Installed Configured EMC disk devices on HP and Solaris Servers.
> Documenting each step and testing procedures before the migration.
> Take full gathering of data and ensure everything planned and documented
so other team members can use it during their support hours.
> Troubleshooting, diagnostics and fixing the network, hardware and
software issues on Sun Fire and Enterprise Servers.
Environment: SUN Fire T2000, SUN Fire X4200, SUN Fire 4800, SUN Enterprise
10K, HP ProLiant DL580 and DL380, IBM P-Series, Weblogic 8.1, IBM
Websphere, JBoss 5.0, Oracle 10g/9i, Veritas Volume Manager 4.x/3.x,
Veritas netbackup, Veritas Cluster server EMC, SAN Multipathing(DMP),
Oracle RAC, Sun Solaris 10/9, RHEL 5.x/3.x, Suse Linux and Windows
2003/2000.
Client: Detroit Energy
April '2005 - May '2006
Detroit, MI
System Administrator
Responsibilities:
> Installation, Upgradation and configuration of Solaris 9/8 and RedHat
Linux OS on Sun Fire Servers, IBM Blade servers using Jumpstart,
Kickstart and CD media.
> Installation and configuration of Veritas storage Foundation Suite,
Volume Manager, Cluster Servers & Veritas File systems (Vxfs).
> Used Veritas File system and Veritas Volume Manager 4.1, 5.0 to configure
the RAID 1 and RAID 5 Storage Systems.
> Worked on SUN clusters in SAN environment (Netapp).
> Managing and load balancing end-to-end business critical servers(mostly
databases) on Veritas VCS and CFS clusters with vast range of critical
applications
> Creation of Logical volumes (LVM) for Linux operating systems.
> Installation, Configuration and Administration of Weblogic, Websphere,
Apache and IIS Servers in Linux, Solaris and Windows Servers.
> Administration of NFS, NIS+, LDAP, DNS, Samba and Sendmail Severs.
> Working knowledge of VMware (Virtualization).
> Installed Patches/Packages on and Solaris Servers and RPM packages on
Linux Servers.
> Oracle installation & system level support to clients.
> Written shell scripts to automate the administrative tasks using cron and
at.
> Logging events and forcing crash dumps, securing servers and
troubleshooting issues.
> Troubleshooting and resolving of problems related to hardware, operating
systems, third party applications and scripts.
Environment: Solaris 8 and 9, Sun Fire 15K, Sun Fire 6800, 4800, V880,
V420R, E220R, E450,Redhad Linux AS3.0,AS4.0,VXFS, JBoss 4.2, Veritas
Foundation Suite, Veritas Volume Manager, Netapp ONTAP, Veritas Cluster
Servers, Oracle9i, Websphere, Weblogic.
Client: Munich Re-Insurance America
Aug '2003 - Mar '2005
Princeton, NJ
Responsibilities:
> Installed, upgraded, Mirrored and configured Solaris 9/8/2.7, RHEL 3.x
and Windows 2003/2000 using Jump Start and Kickstart Installation.
> Disk and File system management through Solstice Disk Suite on Solaris.
> Disk Management using different raid technologies in Solaris and Linux
using VERITAS Volume Manager and LVM.
> Configuration and administration of LDAP, NFS, NIS and Samba in Solaris,
Linux and Windows.
> Involved in Configuring DHCP server and giving IP addressing dynamically.
> FTP Server configuration in Linux and done kernel tuning on Linux for
play out software
> 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 using cron and at.
> 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: Sun Solaris 2.x/7,8, Windows 2003/2000, Enterprise 4500, Sun
Enterprise 250, Linux Servers (Red-hat Linux Enterprise), Apache Websphere,
Veritas volume manager,Oracle9i.
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