PROFESSIONAL SUMMARY:

• Senior Systems/Virtualization/Cloud Administrator with 15 years of experience System administration, systems planning and design in Linux, Solaris, Windows, C loud and virtualization technologies.
• Supported applications and systems running on Linux/Unix servers in a heterogeneous cloud and datacenter environments.
• Accomplished team member with effective communication and passionate to learn new technologies and troubleshoot issues.
• Proven ability to design, build, configure and administer Linux, Solaris and Oracle database systems.

TECHNICAL SKILLS:

HARDWARE/SERVERS: HP C7000, Cisco UCS, Dell Harddware, DL380, DL580, DL760, CSS11000, Sun Confidential - Series servers, EMC VNX/VMAX, NetApp File Server, Exhabyte220, HP 9000, IBM Netfinity Server, Cisco 1600 Routers.

OPERATING SYSTEMS: RedHat Linux 7/6.x/5.x,4.x, Oracle Linux 6.x,5.x, Sun Solaris 11/10/9/8/7, Openstack, MS Windows 2008/2003/2000 servers

VIRTUALIZATION: VMWare, XEN, KVM, SDN and NFV

WEB SERVERS: Apache Web Server 2.x/1.x Weblogic Server 8.1/5.1, iPlanet/Sunone WS 6.1/5, IIS7.5/7/6/5

MAIL SERVERS: Sendmail 8.9.x, Postfix and MS Exchange 5.5

DATABASES: Oracle 11g/10g/9i/8i, MySQL 2/5 PostgreSQL 6.5.2, MSSQL 2008/2005/2000

LANGUAGES: Shell Scripts (Bourne shell, Bash shell)

NETWORKING SERVICES: NFS, NIS, DNS, LDAP, AutoFS, FTP, sFTP, SMTP, SNMP, SIP, Diamenter

TOOLS: Puppet, Ansible, Chef, Hadoop, Map Reduce HDFS, HBase, Hive, Zookeeper, Oracle Clusterware, ASM, Data guard, RMAN, Veritas Clusters, Veritas Volume Manager, Solstice Adminsuite and Disksuite,, Hummingbird Exceed, ReflectionX, Samba, TCPdump, TCPWrappers. HP Open view, and UniCentre TNG.

PROFESSIONAL EXPERIENCE:

Confidential

Responsibilities:

• Worked on planning, design and implementing Redhat Openstack cloud on CentOS platform. Installed and configured Openstack components on CentOS using RDO manager. Setup routing between physical and virtual networks. Created multi-tenant networks and mapped VM’s with floating IP’s to access from public network. Created various OS Images based on project requirements.
• Implemented Openstack Controller high availability with Pacemaker cluster, HAProxy, MariaDB and Galera cluster. Created cloned pcs resources for all Openstack services, Setup HAProxy to load balance all the traffic from Openstack services. Configured MariaDB Galera cluster in Active-passive mode and HAProxy to load balance the DB connections from all Openstack services.
• Installed and configured Ceph storage cluster as a storage solution for image, object, block and file storage solution. Implemented Ceph monitors and created one RBD per hard drive. Integrated Ceph storage with Openstack services for all storage needs. Setup Kickstart server to automate the server provisioning. Installed and configured Linux servers from Kickstart for the name and data nodes for Hadoop clusters and Openstack nodes by PXE booting the physical servers from iDrac and ILO’s.
• Installed and configured OEL and OVM servers on x86 servers, Created server pools and managed vServers from OVMM. Installed and configured EM12c and agents to monitor the servers. Created servers from clones and templets on OVM platforms. Setup networking, storage and file systems according to Oracle DB requirements. Implemented NIC bonding, Configured EMC Powerpath and Linux native multipath for SAN, NAS and iSCSI storage. Implemented LVM on local and SAN shared storage.
• Managed the server configuration via Puppet and Ansible, automated the OS configuration tasks like sudoers, ntp, route, sshd, pkgs, syslog, yum config etc., via puppet and ansible and stored them in GIT. Written playbooks in ansible to implement lvm changes and installation and configuration of packages on hundreds of servers and also ran ansible ad-hoc commands and on demand updates on puppet client when needed.
• Installed and configured Oracle RAC Clusters for high availability on Oracle Linux. Configured and setup standard Oracle environment for DB install. Implemented, configured and tested huge pages for oracle 11gR2. Installed and configured ASMlib drivers, Created ASM devices for Oracle DB’s, designed application and DB file systems based on application and DB standards. Worked on setting up scan IP’s and registered services with SCAN listener
• Setup local yum repository and kept in sync with Centos and Oracle public repos to install the software packages. Administered packages through yum and RPM on all environments. Managed incidents through Jira and worked on daily activates like monitoring HW alerts and replacing harddisk, RAID controller batteries etc. and implementing and changes.

Confidential

Responsibilities:

• Patched and upgraded Linux servers from RH Satellite and YUM repositories. Setup local yum repository and kept in sync with Confidential to install the software packages.
• Administered packages through yum and RPM on all environments. Worked on high availability and disaster recovery solutions and exercises. Built and managed Oracle RAC and Veritas clusters.
• Expert knowledge of Linux services like SMTP, SSH, SFTP, DNS, DHCP, NIS, Samba, etc. Installed and Setup Cloudera Hadoop clusters on Redhat Linux.
• Built and maintained Redhat clusters through Luci on both physical and vmware servers, Setup and configured shared storage and public and private vlans for clusters.
• Managed and scheduled patching jobs through bigfix infrastructure. Worked on Powerbroker for access management tool then replaced it with Centrify. Worked on integrating Linux and Unix servers with Centrify for windows AD single sign on authentication. Managed hardware, software, systems and config information for all servers using entility navigator.
• Installed and configured OEL and OVM servers on x86 servers, Created server pools and managed vServers from OVMM. Installed and configured EM12c and agents to monitor the servers. Setup Kickstart server and installed RHEL servers from Kickstart, Created servers from clones and templets on VMware and OVM platforms. Setup networking, storage and file systems according to Oracle DB requirements. Implemented NIC bonding, Configured EMC Powerpath and Linux native multipath for SAN, NAS and iSCSI storage. Implemented LVM on local and SAN shared storage.
• Worked on memory management to improve the system performance, Managed devices using udev, Created LVM snapshots for backup. Installed and configured ASMlib drivers, Created ASM devices for Oracle DB’s, Configured and managed RAID1,5,6 and 10. Worked with Storage/SAN teams to get required amount of storage for app/DB needs and mounted the file system to be available on Linux and Solaris. Monitoring file systems and process through sysedge alerts and fixing the server issues like space, backup failures.
• Setup VMWare ESXi clusters created and hosted virtual servers and managed them through vSphere and vCenter. Installed and configured Redhat Linux on Physical and VMware servers on Test, Staging and Production environments. Migrated servers from Physical to Virtual servers on VMware using P2V which saved company over million in maintenance and power/space costs.
• Installed, configured and implemented Openstack, created and tested virtual networks in a testbed, Setup standalone nodes each for controller, compute, network and storage nodes. Used LVM as storage backend for object and block storage. Created and uploaded custom images. Setup projects, users and tenets etc.. Managed HP PSPtools, firmware and ILO on HP hardware, Worked with vendors and opened cases to replace failed hardware components like HD, CPU, fan, battery etc.and software issues kernel panic, hung, unplanned reboots etc.
• Installed and configured Solaris 10/11 on Oracle Confidential -series servers, created LDOMs and zones and loaded Solaris. Worked on Image packaging system, Automated Installer, SMF, Storage management through ZFS, boot partitions, package and patch management. Configured the system per application requirements, assisted in installing, configuring and troubleshooting middleware, Java applications and databases. Worked on file system management, implemented ACL, quotas and auto mounting.
• Installed and configured Puppet master and agents. Configured puppet to propogate OS configuration information like like sudoers, ntp, route, sshd, pkgs, syslog, yum etc, Setup client manifests to deploy configuration updates across all servers. Implemented load balancing across web farm for Apache and Tomcat to implement HA.
• Installed and configured Oracle RAC Clusters for high availability on Oracle Linux. Configured and setup standard Oracle environment for DB install. Implemented, configured and tested huge pages for oracle 11gR2. Updated the database with PSU patches. Worked on DB upgrade from 10g to 11gR2. Worked on setting up scan IP’s, Designed application and DB file systems based on application and DB standards. Registered services with SCAN listener and setup OID entries for client communication with DB.
• Responsible for performing database installations, configurations, upgrades, and migrations of Oracle database systems which are running on Solaris and Redhat Linux systems. Worked on Storage, growth and data retention requirements, configured clusterware, listener, Managed DB storage using ASM for Oracle 10g/11g. Configured RMAN Database Backup & restore. Setup replication through Datagaurd and Golden Gate. Designed application and DB file systems based on application and DB needs.
• Installed and configured MSSQL on active-active and active-passive clusters. Administered DB and resources through MS clustering. Configured full and incremental DB backups, Responsible for developing, maintaining, implementing database documentation and DBA best practices. Ran cluster verification utility prechecks and fixed all issues from NTP, SSH, user equivalence etc.
• Worked on setting up and configuration of in-house applications, Managed vendor relationships to Procured servers. Software and middleware licenses. Implemented Load Balancer, Firewall and SSO SiteMinder rules for in-house applications. Configured WebLogic and SunOne Web server to run java applications and configured and administered IIS5/6/7.5 to run .net applications. Implemented Global load balancer for the application running on different datacenters. Worked with AKAMI to setup Disaster recovery and content management services for the verizon.com applications. Akamai’s Edgesuite is running on over 127k servers store Verizon.com content, which speeds up the content delivery.
• Worked with network teams to move T1 line between Verizon and Confidential vendor servers and seamlessly migrated the applications to new datacenter without any impact to call center users. Implemented and tested firewall rules between Verizon telecom, VZW and Confidential datacenters for the applications to communicate. Implemented and configured sftp to securely transfer the data feeds from Confidential application servers to Confidential .
• Built Development, Test, Staging and Production environments for hosting Verizon internal and external applications. Worked on configuration and deployment of application packages using CMMC to Test and Production environments on Windows and Tivoli on Unix Platforms. Configured and monitored the application availability through sentinel and server resources through patrol alerts. Implemented to monitored CPU/Memory usage on Production servers through hourly emails.
• Provided production support and troubleshooting functions for dozens of projects. Attended outage calls and opened support cases with vendors like Redhat, Oracle, HP, VMware etc. to resolve critical OS and hardware issues. Interacted with clients on project requirements gathering, independently managed front end, middle tier and backend applications.
• Worked with security team on application and port scan and fixed security vulnerabilities on OS, firmware and applications on all environments. Worked with PCI team to implement and comply with PCI requirements. Mitigated any issues identified by the quarterly app scan like IP Header check to block undesirable access. Moved all the PCI servers behind PCI firewall for the applications that transports the credit card data between applications. Worked on certificate renewals, DR exercises etc.
• Configured debugdiag and sysmon to capture the memory dumps to identify the application hangs. Worked on capacity planning to get the required number of servers and resources to host the application. Ran application load test to identify the resource bottlenecks and worked with hardware team to upgrade the CPU/RAM as needed.

Confidential

Responsibilities:

• Installed, configured and setup Sendmail on Solaris 8 for chordiant.com domain. Configured Round Robin DNS for web Applications to provide Load Sharing and High Availability. Setup Primary and Secondary Sendmail Servers and Setup aliases and MX Records for chordiant.com domain and routed the mail to Exchange Server.
• Setup Master and Slave DNS Servers for chordiant.com domain. Installed and Configured Apache Server for an intranet website. Installed and configured SSH for secure remote logins. Installed Configured and setup Samba on Solaris for file sharing across Windows Platforms. Setup Legato Networker as a Backup solution on Solaris and windows.
• Responsible for performing Oracle, MySQL and PostgreSQL database installations, configurations, upgrades running on Redhat Linux. Participated in database build designs, created the databases and loaded Schema and tables and monitored the DB systems for space issues. Performed database backups, restores, performance tuning by optimizing database parameters.
• Installed, and configured Veritas Clusters and Veritas Volume Manager on Solaris. Configured Sun Store Edge A1000 disk arrays for sun servers. Configured and setup DNS Round Robin for Load Sharing for web applications running on Apache Server.
• Configured and setup 1NIS Master on Solaris and Slave server on Redhat Linux. Configured AutoFS to automatically mount the home directories from the NFS Server. Installed configured and setup Samba on Solaris for file sharing across Windows.
• Installed and configured Solaris 2.8/2.7 on SUN E4500, E450 and E250. Maintained 1 Primary NIS server and 5 NIS Slave servers for domain login authentication. Setup and Maintained 20 NFS servers and configured AutoFS for auto mounting home directories and NFS file sharing. Setup CacheFS on the clients for NFS file sharing. Configured and Maintained DNS, DHCP, Proxy, Apache Servers on Solaris7. Configured four software routers on Redhat Linux 6.2 for connecting different networks.
• Provided day-to-day user administration like adding/deleting users, password aging and setting up disk quotas. Setting up Linux Networking services like NIS, NFS, DNS, DHCP, FTP, and Samba.

Confidential

Responsibilities:

• Responsible for performing Oracle, MySQL and PostgreSQL database installations, configurations, upgrades running on Redhat Linux. Participated in database build designs, created the database file systems and loaded Schema and tables, setup users and access control, and monitored the DB file systems for space issues. Performed database backups, restores, performance tuning by optimizing database parameters. Administer databases through full application life cycle from Dev to Prod.
• Maintained 1 Primary NIS server and 2 NIS Slave servers on Solaris, 2 NIS Servers on Linux for domain logon authentication. Setup and Maintained 10 NFS servers and configured AutoFS for mounting home directories automatically.
• Setup CacheFS on the clients for NFS file sharing. Installing, creating and maintaining Oracle database servers, Weblogic servers, Jrun Application servers and PostgresSQL Servers. Configured Samba Server on Solaris and Linux servers to share files across Windows 9x, NT and 2k systems. Backup and restoring process using ufsdump and ufsrestore.
• Configuring and setting up MSSQL7 and setting up the clients. Configuring MS Proxy Server 2 to setup packet filtering and sharing the Internet connection. Setting up NT Networking services like DNS, DHCP, WINS, Dialout and Dialin Server on NT, Configuring Software Router and Gateway.

Confidential

Responsibilities:

• Gain strong understanding of Linux OS, Hypervisors (KVM, Xen) and Linux containers (Docker), Cloud technologies like Openstack, AWS, and Google Compute Engine. Gain in depth knowledge on IPv6, LTE technologies in 4G, 5G, M2M and Internet of Things.
• Continue to learn Network virtualizations NFV and SDN Controllers like OpenDaylight, SDN south bound plugins like Open Flow, Open vSwitch, Confidential, legacy routing protocols OSPF, IS-IS, BGP etc, switching protocols MPLS and control plane protocols RSVP, LDP
• Learn Messaging environments like RabbitMQ and NoSQL databases such as Cassandra, MongoDB, Redis. Map-Reduce.