Manager System Administrator
Resume:
RAVI SREERAM
Email: ************@*****.***
Ph No: 631-***-****
Location: Eastchester, NY
CERTIFICATIONS:
Red Hat Certified System Administrator (RHCSA)
HP-Certified - HP-UX System Administration
SUMMARY:
20 years of experience in IT as Unix/Linux System Administrator with experience in System Integration, Administration, Application Support, Installations of Servers / Operating Systems and Configuration, Patch Management, OS Upgrades, tuning, troubleshooting, backup/recovery, Disk /Filesystem management and addressing network related issues.
Extensive experience with RedHat Enterprise Linux (4.x/5.x/6.x/7.x), Centos (5.x/6.x/7.x), Ubuntu, Sun/Oracle Solaris (9/10/11), HP-UX (9/10/11), Windows 2008R2/2012
Automation of administrative tasks through scrips.
DevOps experience deploying and managing environments in AWS IAAS (VPC, EC2, ELB, EBS, S3, Route 53, CloudWatch). Experience with installation and configuring Dockers.
DevOps - Build engineering & release management process, deployments of artifacts for entire life cycle model in Enterprise Applications, managing deployment of releases to environments and building servers CI/CD.
Working knowledge on Puppet.
Experience on Zookeeper.
Addressing security breaches through bug fixes (patches).
Upgrade of packages, kernel and drivers
Experience in setting up software / Hardware RAID’s for data redundancy using Logical Volume Manager (LVM’s) and Veritas Volume Manager and Veritas File Systems, ZFS.
Experience in user account management, security, disk management and process monitoring of Red Hat, Solaris, HPUX, OpenStack
Installation and configuration of monitoring tools, analyzing data from (Splunk, ELK, Datawarehouse) for performance issues/troubleshooting, tweaking kernel parameters
Optimized performance of applications.
Experience in compiling Source Code for various GNU applications (Apache/SVN/CVS, etc.).
Extensive experience with the installation, configuration, integration, tuning and troubleshooting of Web Servers, Apache 2.4.X,2.2.x, JBoss 4.x/5.x/6.x, JBoss Fuse, Tomcat, WebLogic 8.x, 9.x, 10.x. Application Servers, etc.
Expertise in configuration and administration of NIS, NIS+, NFS, DNS, LDAP, DHCP, Mail Servers, Automount, FTP FreeIPA (Identity Management), Active Directory, Security Management and Security troubleshooting skills and others.
Shell Scripts (sh/ksh/bash/perl) to automate day to day jobs and collect various server metrics.
Advanced level of experience with researching OS issues, applying patches and following up with vendor tickets.
Understanding of error logging subsystem, resolving technical issues, problem determination, troubleshooting and providing Root Cause Analysis
Experience in working in Data Centers with 24x7 Production and On-Call environments with physical server installations.
Experience with Checkpoint, Dell SonicWALL Firewalls, F5 Load Balancers, OpenVPN.
Experience with Veritas Cluster Service VCS and VVM Veritas Volume manager & MC Service Guard and worked in high availability & mission critical systems and heterogeneous environment and knowledge of various Hardware Integration / Configuration.
Experience with backup/recovery with Veritas NetBackup 4.5/5.x
Experience with DWH (Data Warehouse) / ELK (Filebeat/Elastic Search/Logstash/Kibana).
Experience with Splunk, chef client, CFEngine.
Extensive experience in various testing strategies such as System/Integration/Load/Regression/User Acceptance Testing (UAT) and Manual testing (GUI Testing, Field Validation Testing, Functionality Testing) of UI and Web Applications.
Experience in Storage Area Networks (SAN) / Network Attached Storage (NAS) environments including Support, Troubleshooting & Storage Provisioning
Extensive experience with Verity Search Server, FAST ESP 5.3 (Search Engine), SOLR 4.x/5.x/6.x (Search Engine),FTP Servers, Proxy Servers, DNS servers, NFS/NIS, SAN, SVN/CVS Version Control Servers, Mantis (Bug Tracking)/SDP, JIRA, UNIX / Linux / Microsoft Servers, WEB Servers (Apache 2.2/2.4), JBOSS Application Server 4.x,5.x and third party web applications.
Experience with ESX Architecture, Cloning and Snapshots, Virtual Network, ESX Server, ESXi Server & Virtual Machines, Templates from VMs and deploying VMs from Templates & VMWare tools, VMWare Virtual Lab, VMWare vSphere.
Installation/configuration/monitoring applications, Dynatrace, Foglight, Quest Tools, App Dynamics, SCOM, SquaredUp, BMC Patrol, Nagios etc.
EXPERIENCE:
BLOOMBERG. NY Dec. 2017 to Dec. 2018
The Systems Stability Engineering team manages a large and diverse fleet of Linux, Windows, Solaris, and AIX servers, handling all aspects of operating system administration including configuration management, task orchestration, kernel and performance tunable, and disk management. Working with modern, open-source tooling while maintaining mission-critical systems hosting a wide array of applications.
The Systems Administrator role in providing systems management and engineering skills to support global Linux/Unix/Solaris/AIX and Windows computing environment.
Support for various system alerts/monitoring and providing solutions for various issues on multi-platform servers.
The environment has fleet of servers from HP, Dell, Supermicro, VMware, Sparc, Open Stack.
Server migration, File System management of SAN disk allocations and NFS. Addressing wide range of issues from Operating system kernel errors and user reported issues/tasks.
Support for users requests for Disk allocations and Filesystem re-organization for better throughput / transfer rates.
Projects to extend FS with LUNs allocated from SAN and adding NFS mounts.
Analyzing system crashes and providing system owner with suggestions for application issues and providing Root Cause Analysis.
HCL AMERICA INC
Client: WOLTERS KLUWER, New York Nov. 2004 to Oct. 2017
Senior System Administrator
Senior Unix/Linux Administrator and responsible for addressing server related issues, implementation, maintenance, configuring and deployment of Global Atlas Platform
Experience in Devops - deploying and managing environments in AWS (VPC, EC2, ELB, EBS, S3, Route 53, CloudWatch).
Experience with Azure.
Writing Shell Scripts to achieve various functionalities for each of the environment and email notifications for each critical occurrence of events and scripts for administrative tasks.
Monitoring, administration, deployment of code and security maintenance of Application Server / Apache Web Servers/Search Servers/Database Servers in different environments.
Deploying Core and Portal releases on all environments through Bamboo CI / Jenkins and deployments through scripts from CVS (Version control).
SSO (Single Sign On) Pingfederate configuration, upgrade, updates and onboarding new clients, working with developers.
Installation / configuration / monitoring of Linux / Unix Servers (RedHat 4.x/5/x/6.x/7) / (Solaris 9/10)
Installation and configuration of various monitoring applications (Dynatrace / App Dynamics / Foglight / Zabbix / Nmon etc) and maintenance.
Configuring Syslog/Syslog-ng/Rsyslog to filter/capture logs from application servers and ship it to DWH (Data Warehouse) for processing logs.
Configured ELK (Filebeat / Logstash /Elastic Search / Kibana) for log analysis of Application Servers / Web Servers / Search etc.
Setup and configure Net Backup server / client & tape libraries.
Experience in Disaster Recovery and Planning.
Troubleshooting Linux network, security related issues, capturing packets using tools (TCPdump,Wireshark) and modifying IPtables.
Addressing Network/firewall related issues between servers.
Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID 0, 1 & 5 Levels
Experience with VMware (Virtual Lab / vSphere / ESX).
Configuring full environment from building servers, installation / Configuration of Application Servers (Apache/WebLogic/JBoss/Tomcat/SOLR) and deployment of releases and configuring/deployment of releases on MSSQL Database.
Monitoring Application / Hardware failure and escalating with Vendors. Monitoring of system health through SAR/NMON/SquaredUp/SCOM etc.
Working closely with developer / QA to understand the system capacity requirements. Deployment of applications on Linux Environment, Compiled version of Apache as per release cycle and installation and configuration of Load balancing of Application servers through AJP etc.
Developed and maintained scripts for build and release tasks.
INTELLIDYN CORP, New York Feb. 2003 to Oct. 2004
Senior Unix System Administrator
Responsible for Data Warehouse operations, monitoring, writing scripts as needed and automating day to day administrative tasks.
Configured NetBackup Data Center 4.5 on Solaris 8.0 and Solaris 9.0 and upgraded NetBackup Enterprise Server to 5.0.
Configured SAMBA on FTP Server so that users can access their respective client account without logging with user name and password for each client.
Supported SAS users, wrote shell scripts to control the number of submitted jobs and Queueing jobs.
Wrote various scripts to control Media Library, Error message reporting through E-mail or Text messaging.
Backup Management done through NetBackup and making another copy of critical data for offshore storing and for disaster recovery.
Disk Management through LVM’s and Veritas volume manager.
Monitoring Hitachi 9200, 9960 Storage through Disk Array management tool (GUI) and SUN Store Edge 6320.
Windows NT System administration and proxy server setup.
Installed BMC Patrol Clients on all the systems for system alerts and performances on Intel platform.
Installed TNG Agent for monitoring the system events, install and configured.
PEROT SYSTEMS
Client: ROBERT PLAN INSURANCE CO, New York Nov. 2000 to Jan. 2003
Senior System Administrator
Working as Senior System Administrator and looking after EIS Imaging operations, monitoring workflow of scanned documents various stages. Monitoring scripts running through cron jobs on each sever and debugging the log files in case of failure.
Project:
The Tiff images of the document are integration with the database and are written to the platters on the jukeboxes and the corresponding metadata related to images are stored in Mainframe. There are 6 servers, which are synchronized to perform the imaging operation and involves database server and Mainframe.
Supporting the EIS Imaging Operations and its peripherals such as Sony/HP Juke Boxes.
Wrote UNIX shell scripts to monitor status of jukeboxes and Imaging servers which needs to be in sync at all times for proper functioning.
Configured the HP juke box MX 2200 on D370 Server and in Sietec
Configured the Arc Server backup for temporary storage of images on the DLT Tape Library for a week and when the images are written on the optical platter the tapes are re-written again.
Automated the jukebox monitoring, importing of platters and backup of platters through Shell scripts. Finding inventory of platters and monitoring space for procurement of platters before we ran out of space.
Wrote Shell script for File transfers to M/F and were automated through cron jobs. Any error while FTP was notified by pager
Wrote Shell script for various operational jobs which intern calls C programs with the appropriate arguments. These scripts are run through cron.
Configured network printers / Auto Feed scanners for Sietec Application.
Configured Samba on C200 Server under HPUX 11.0 and Under Linux for the Development Team to mount their home directories to their local systems and for various testing reasons and configure the printers under Samba
Wrote scripts using Send alarm utility, which was used by Tivoli to send the page and open the ticket.
Project:
Integrating the data from various locations to servers at New York, Project name AIMS
Modified the Shell scripts to integrate the data from NJ and CA at NY. The Data from these locations were stored under different region name and the operations were synchronized with the NY operations.
Troubleshoot Production Server Problems, mainly related to Veritas Volume Manager (VXvm) & MC/SG (MC Service Guard)
Backup strategy was implemented with NetBackup, which was loaded on L3000 and the clients on the rest of the servers. Raw partition backup’s such as Sybase database was possible with this backup.
- PRIOR EXPERIENCE (7 years) AVAILABLE UPON REQUEST -
EDUCATION:
Bachelor of Engineering (Electronics & Communications), Osmania University, India
D.E.C.E (Diploma in Electronics and Communication Engineering), Osmania University, India
TRAINING:
Red Hat Certified System Administrator (RHCSA)
HP-Certified - HP-UX System Administration
Novell Netware 3.x and 4.11
Windows NT 3.x and 4.0
Hardware troubleshooting of various HP 9000 Servers and Workstations.
Hardware troubleshooting of various SUN Servers / Workstations
NetBackup Data Center 4.5 / NetBackup Enterprise 5.0
Veritas Volume Manager
FAST ESP 5.0.X (Enterprise Search Platform)
Foglight, Dynatrace, Grafana, Splunk
WebLogic, JBOSS, Fuse
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