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Sr. Systems & Vmware Administrator Resume

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New York City, NY

SUMMARY

  • 10+ years of strong LINUX system (Red Hat, CentOS, Debian Linux) and Network administration skill plus MS Degree in Computer Science.
  • 4 years of working experience wif Windows, Solaris, and AIX.
  • In - depth knowledge of TCP/IP networking, networking devices, NIC bonding, VLANs, routers and firewalls.
  • Strong experience in virtualization (VMWare) technologies, experience of managing VMWare farm consisting 1000+ virtual machines in mission critical enterprise environment.
  • Experienced in fast paced cloud computing environment (vCloud Director), VMs provisioning, managements for clients, and support.
  • Experienced in VMware ESXi 5.x, ESX servers (ESX 3.x, 4.x & vsphere, vCenter), VMotion, Cloning resource pools, snapshots, VM performance monitoring, VMware architecture, design and implementation experience including VMWare migrations from 4.0 to 4.1., and from 4.1 to 5.1 migrations. Able to create templates and manage very big setup of VM environment wif very high-availability and very high P to V ratio.
  • Experience in configuration and troubleshooting of infrastructure services: NFS, NTP, DNS, DHCP and SSH.
  • Experience in installation, performance tuning and troubleshooting of Web Services (Apache Web Server, MySQL, PHP, Squid Cache) and Mail Services (Postfix, IMAP, POP3).
  • Experience in setting up secure encrypted connectivity (RSA/SecurID, SSH, SSL, VPN), public-private key generation, installation and strong familiarity wif cryptography theory.
  • Great knowledge of SAN, HBA, WWN, NAS, iscsi & Fiber switching fabric accessing over 1000 TB of storage (from a system administrator standpoint).
  • Hands on experience wif storage systems management, Veritas Volume Manager, Linux LVM, software RAID, Quota, user management, roles, crontab, file permissions etc.
  • Proven ability to automate server builds using kick start, management and configuration of system services using Puppet.
  • Solid background in shell scripting, job automation and scheduling.
  • Experienced in installation of hardwares, upgrade of firmware, BIOS on mainstream server series (DELL PowerEdge, HP ProLiant, Sun Fire/Netra/SPARC).
  • Installation and maintenance of many third party products like JOBSS, Weblogic, Tomcat, WebSphere MQ, WebSphere Application Server, Oracle, and JMS.
  • Proficient in configuring NFS, Crash Recovery, Change Management, back up and restoration of data and system monitoring using various tools.
  • Working experience wif the databases like MySQL, Postgresql and Oracle. Has exposure wif database backup/restore, security, tuning and administration.
  • Has solid understanding of RPM packages. Expertise in building, maintaining, installing and updating packages.
  • Familiarity and experience wif various procedures and policies required for escalation and outage resolution.
  • Possess good analytical and problem solving capabilities wif excellent communication, documentation skills.
  • Prior experience of working in a 24x7 production environment.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux (RHEL) v4/5/6, CentOS, Fedora, SuSE, Ubuntu, Windows, Sun Solaris, AIX

Scripting: Shell scripting (Bash, Korn), PHP, Perl, AWK, Python, SED, XML and JavaScript

Networking: Layer 2/3 Networking- TCP/IP, UDP, BOOTP, NFS, SNMP, HTTP, POP3, IMAP, SMTP, DHCP, LDAP, Apache, DNS, FTP

Database: MySQL, Oracle, SQL Server, DB2

Security: Netfilter/iptable, RSA/SecurID, SSH, SSL, TCP Wrapers

Tools: Rsync, Puppet, JBOSS, IBM WebSphere MQ, Oracle Weblogic, Cfengine, Cacti, Nagios, Jabber, tcpdump

Virtualization: VMware ESXi 5.x, ESX 3.x, 4.x, vCenter Server, vCloud Director, vShield Manager, VMWare Usage Meter.

Programming: JAVA, C, C++

PROFESSIONAL EXPERIENCE

Sr. Systems & VMWare Administrator

Confidential, New York City, NY

Responsibilities:

  • Senior Administration in 24/7 operations for over 2000 servers in virtual (cloud) and physical (Compute On Demand) infrastructure management solutions at datacenter environment.
  • Installation of Linux (RHEL6.x/5.x) servers using Kickstart/PXE, configurations and monitoring.
  • Day to day troubleshooting issues such as cron jobs, ldap authentications, mounts performance issues, networking, and general issues impacting customers.
  • Responsibilities include management and upgrades of VMware vSphere Enterprise Cloud wif 200+ ESXi hosts in multi-sites environment.
  • Architected and optimization VMware Cloud technologies (VCD) including vCenter Server, ESXi, ESX, Distributed Resource Scheduler (DRS), vMotion, High Availability (HA), Distributed Power Management (DPM), Fault Tolerance (FT), vShield, virtual networking, physical to virtual migrations, Storage DRS, Storage vMotion, and VMware Workstation.
  • Experience in Storage presenting of new LUNs, using LVM, VERITAS VM, NFS, and NAS solutions.
  • Installation and configuration of DNS/DDNS, DHCP, Apache Web Server, MySQL, PHP, Squid Cache, Postfix, IMAP andPOP3.
  • Installation and set up of RSA/SecurID infrastructure in Windows 2008 environment.
  • Set up secure connectivity using SSL, SSH, generation of public private keys, installation and configuration.
  • Configured routing table, NIC IP Address installation, local host configuration files, gateway and routers, DNS and DHCP servers.
  • Experienced in system performance monitoring, tuning and log management, rsyslog/syslog, configured for centralized log management system.
  • Performed Cloud node provisioning using VMware ESXi/vCloud, Puppet, and YUM repos.
  • RHEL Linux (6/5/4) Support of SAN, HBA, WWN, NAS, iscsi & Fiber switching fabric accessing over 1000 TB of storage from a system administrator standpoint.
  • Upgrade and configure system software and perform periodic performance reporting to support capacity planning in a Linux environment.
  • Deployed and managed physical HP Proliant, DELL PowerEgde hardwares.
  • Automated server builds and configuration using puppet.

Environment: REDHAT ENTERPRISE LINUX (RHEL 6/5), Windows 2008, VMWare 5.x, vCenter, vCloud Director, Puppet, Veritas VCS, HP Openview (OVO); TCPDUMP, LDAP, Postfix, DNS, DHCP, NFS, MySQL, SSH, SSL, Perl, KORN, Java, XML.

Confidential, Ashburn, VA

Unix Systems Administrator

Responsibilities:

  • Installation and configuration of Linux (RHEL) and UNIX (Sun Solaris) servers, maintenance and upgrades.
  • Configured Kickstart and jumpstart Files, installed RPM Packages and developed scripts for job automation.
  • Setup configuration and deployment of VMware ESX (ESX 3.x, 4.x), vCenter server and VMs. Cloning resource pools, snapshots, VM performance monitoring and performed VMWare migrations from 4.0 to 4.1.
  • Involved in creating scripting for monitoring and job automation (Perl, Bash, PHP).
  • Installation of Hardware network devices and routers (Cisco 2xxx/3xxx/5xxx, Nokia Firewall devices, SunFire V 2xxx-4xxx series, T2000) and installation of disk drives.
  • Installation of new hardwares (DELL PowerEdge, HP Proliant, Oracle SUN SPARC) servers, upgraded firmwares, set up iDRAC, iLO, and installation/set up of remote console server.
  • Installation, management and basic administration of MySQL, DB2 and Oracle servers.
  • User creation, management and security including quotas, acl, bits and PAM.
  • System performance monitoring, tuning and log management using SNMP, Cacti, Nagios.
  • Configured, Telnet, FTP, sFTP, SSH, iptable, Samba for the servers.
  • Configured storage using Logical Volume Manager (LVM) to configure volume group, logical and physical partitions and importing new physical volumes. Implemented RAID configuration for redundancy.
  • Worked wif Veritas Netbackup and NetApp storage. Experience of working Dell OptiPlex 360, 740 and 760 series.
  • File system backup and restore using tar, Rsync, Bacula.
  • Involved in designing, implementation and management of third party products specifically JBOSS, IBM WebSphere MQ, IBM WebSphere Message Broker, Oracle Weblogic, Tomcat, JMS and Bridges.
  • Troubleshooting and maintenance all hardware and software problems.
  • Played an instrumental role in deciding third party products and suggesting the best fit to management
  • Provided 24X7 productions on call support.

Environment: RED HAT LINUX (RHEL4/5), CenOS, SUSE, Apache Web Server, MySQL, RSA/SecurID, SSH, SSL, LDAP, Jabber, SNMP, Cacti, Nagios, SAN/NAS, netApp, memcache, JBOSS, CISCO 2xxx/3xxx/5xxx, IBM WebSphere Application Server 5.x/6.x, WebSphere MQ 5.x/6.x, XML, JDBC, Sphinx, Perl, Python, XMPP, ORACLE, OpenVZ, VM Ware, ESX3.x, ESXi 4.1, vCenter, vMotion.

Confidential, Irving, TX

Systems/Network Administrator

Responsibilities:

  • Installation and configuration of Red Hat Enterprise Systems (RHEL), Sun Solaris and SUSE servers and configuration of services including DNS, Apache, MySQL, NIS and NFS.CreatingRAID arraysandstorage management (LVM), storage device management, virtual memory &swap configuration.
  • Configured routing table, NIC IP Address, network interface gateway, DNS and DHCP servers.
  • Account,user and group administration, Permissions policy management and quota implementation.
  • Systemperformance monitoring, tuning andlog management.
  • TCP/IP Networking troubleshooting and Linux Network Administration.
  • File systembackup and restore.
  • Installation, configuration, support and security implementation on following services:
  • Shell scriptingand task automation using KORN, Bash, Perl.
  • Management of Firewall, iptables.
  • Remote connection management usingtelnetandSSHconnections
  • Installation and configuration of database systems e.g. MySQL, Oracle.
  • Hardware, softwaretroubleshootingand maintenance including grub configuration and rescue disk.
  • Provided24x7on-call production supports.

Environment: Sun Solaris, Red Hat Linux (RHEL 4), Oracle, TCP/IP, DNS, DHCP, NFS, SAMBA, JBOSS, Apache, POSTFIX, POP3, SMTP, SSL, SSH, KORN, PERL, PHP, MySQL, Oracle, VMWare.

Confidential

IT Administrator

Responsibilities:

  • Installation and configuration of Windows/LINUX server and and administration.
  • Networking set up in University Department and Hostel.
  • Account, user/group administration, folder management and permissions.
  • Web content design, development and maintenance.
  • Configured NFS sharing & Samba sharing.
  • Automated the Scheduling Jobs using Crontab and home grown automation scripts.
  • Designed Network Infrastructure and network maintenance.
  • Installation, configuration and tuning MySQL server.
  • Hardware, software troubleshooting and maintenance.
  • Installation, management of software packages.
  • File system backup and restore.
  • Disk partitions, virtual memory and swap configuration.
  • Monitoring Systems by Custom made scripts.

Environment: SuSE, Windows, TCP/IP, NFS, MySQL, Apache, Bash, Perl, Firewalls

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