· Having 10 years of total IT experience in building and managing heterogeneous server environments including Linux / Solaris / VMWare / AWS cloud

·    9+ years of Extensive work experience in troubleshooting various issues related to Linux  and Solaris Operating System administration

· AAround 2 years of experience in managing VM infrastructure (Linux OS) running on ESX platform

· Around 1 year of experience as AWS infrastructure engineer  

· Around 1 year of experience in Puppet & Ansible configuration management

· Around 1 year of experience on Jenkins, GIT from operations perspective

·    Beginners experience on Container Orchestration Docker Swarm and Kubernetes

·    Beginners experience in Windows server administration

·    Working as Principal Support Engineer(Linux-L3 support) at Arcserve Software Solutions, Hyderabad Since April 2018

·    Worked  as Principal Support Engineer(Linux-L3) at  VERITAS TECHNOLOGIES ,Pune from  April 2013 to Feb 2018

·    Worked as Sr.Engineer in Ericsson India Global Services Pvt Ltd(Linux-L2), NOIDA, from  Feb 2012 to April 2013

·    Worked as Sr.Systems Specialist in HCL Technologies(Linux-L2), NOIDA,from Aug 2009 to Jan 2012

Career Objective    
    • To be in a challenging position in Linux/Devops Infrastructure solutions in an environment that encourages me to grow with the organization in a direction that maximizes both job satisfaction and career potential.

Summary
    • Having 10 years of total  IT experience in building and managing heterogeneous server environments including Linux/Solaris/VMWare/AWS cloud
    • 9+ years of Extensive work experience in troubleshooting various issues related to Linux  and Solaris Operating System administration
    • AAround 2  years of  experience in managing VM infrastructure(Linux OS) running on ESX platform
    • Around 1 year of experience as AWS infrastructure engineer  
    • Around 1 year of experience in Puppet & Ansible configuration management
    • Around 1 year of experience on Jenkins,GIT from operations perspective
    • Beginners experience on Container Orchestration tools Docker Swarm and Kubernetes
    • Beginners experience in Windows server administration

Educational Qualification    
    • B.Tech (Information Technology) through Kakatiya University, Warangal With 71 % (2002-2006)

Professional Profile    
    • Working as Principal Support Engineer(Linux-L3 support) at Arcserve Software Solutions, Hyderabad Since April 2018
    • Worked  as Principal Support Engineer(Linux-L3) at  VERITAS TECHNOLOGIES ,Pune from  April 2013 to Feb 2018
    • Worked as Sr.Engineer in Ericsson India Global Services Pvt Ltd(Linux-L2), NOIDA, from  Feb 2012 to April 2013
    • Worked as Sr.Systems Specialist in HCL Technologies(Linux-L2), NOIDA,from Aug 2009 to Jan 2012

Professional Certifications        
    • Redhat Certified Engineer RHEL 7
    • ITIL Foundation Certification in IT Service Management
    • VMware Certified Professional 6.0
    • Sun Certified System Administrator for the Solaris 10 Operating System (Part 1 & 2)

Current Role and Responsibilities:    
    • I am currently providing L3 level assistance in Arcserve Global support team
    • I handle issues escalated by Level 1 and Level 2 engineers on Arcserve Backup and Arcserve UDP   from Linux/UNIX perspective in Cloud/Hypervisor/Physical infrastructure
    • The L3 support role also includes handling escalation from premium customers by Technical Account Mangers(Sales/PreSales).Also I provide assistance to resales teams in performing Proof Of Concept(POC) for end users
    • Arcserve Backup and UDP product installation/upgrades using Puppet.
    • During product development and testing phases, provide assistance to deploy required infrastructure 
    • Deployment of dockers through docker swarm, writing puppet odes for usage in Puppet configuration management
    • Experience in using Jenkins tool for deployment tasks.
    • Troubleshooting backup failures ,Identifying root cause and providing solution
    • Troubleshooting OS firewall issues during backup/restore operations
    • Install and build Linux/Solaris/Windows VMs or Physical machines for testing various workloads for understanding performance issues
    • Being part Support readiness group, We thoroughly review Beta release of product for potential bugs before it goes to public.
    • Troubleshooting Linux file system performance issues
    • Based on environment, fine tuning kernel parameters for improved performance/speed
    • To make effective network bandwidth utilization, testing different values for TCP parameters
    • Managing LDAP and local users with security mechanisms
    • Troubleshooting file/folder sticky bit,setuid,setgid and ACL related issues
    • Evaluating system performance using top,vmstat,iostat,nload utilities
    • Managing LVM,OS partitions in Linux 
    • Troubleshooting backup snapshot issues on VMware, Windows client nodes
    • Need to analyze and troubleshoot customer environments like AWS,Hypervisors,Physical environments during various Backup and Restore operations
    • Instant VM,Virtual Standby and BMR tasks to spin up new VMs based on backup sessions across on-premise,cloud and Hypervisor environments
    • Reproducing customer problem in internal labs
    • Co-ordinating with engineering teams for product fixes in case of new problem
    • Attending escalation calls involving customers, other OS/Storage/Network vendors
    • Delivering Linux specific trainings across support teams
    • Troubleshooting network communication, security/port issues, performance issues at Windows/Linux OS level, Cloud infrastructure
    • Understanding private and public network connectivity, security group rules and firewall checks necessary for successful Bare Metal Recovery tasks in cloud
    • Assisting customers to install, configure Oracle backup agents on Linux/UNIX servers for tape level backups.

Role and Responsibilities at VERITAS :    
    • Clear understanding of Product design and process flow enables me to identify problem and provide solution
    • Extract veritas explorer contents for analysis and identify root cause for various issues like disk group corruption,vxconfigd hangs,disk import failures,migration of storage etc.
    • Joining customer conference calls with participants from other Vendors like Operating System,Network,Storage,application etc to isolate and resolve complex problems.
    • Conducting performance analysis of Veritas filesystems and Clusters.
    • Working with performance analysis tools like vxtunefs,vxtask etc
    • Performing all regular tasks like creation of new veritas filesystems,resizing of veritas volumes,
    • Recovering corrupted disk groups Fixing private region specific issues.
    • Troubleshooting VCS issues related to GAB,LLT,I/O fencing,reservation keys,split brain(vxsplitlines)
    • Analyze OS crash dumps to identify root cause for panic or hung,panic  situations
    • Tuning OS kernel parameters to improve performance
    • Performance analysis thru utilities like top,prstat,strace,vxstat etc
    • Allocation of new storage at both OS and Veritas level
    • Troubleshooting multipathing issues(vxdmp,MPXIO etc)
    • Troubleshooting LDDOM issues(control domain,guest domain)
    • Working and troubleshooting various RAID level of storage.
    • Configuration,Troubleshooting skills on Replication technology Volume Replicator(VVR) and Global Cluster (GCO)as Disaster Recovery Solution

Routine Activities in Ericsson:    
    •     Troubleshooting NFS and autofs issues.
    • Managing users, automount services thru LDAP and e-Directory.
    • First level handling of netbackup infrastructure hich includes creating and managing netbackup policy,running inventory, Netbackup media management
    • Analyzing network, disk, and processor performance statistics.
    • Configuring NTP service for time synchronization.
    • Handling Service Management Facility tasks.
    • Configuring and Administration of Solaris Zones.
    • ZFS pool and filesystem administration.
    • Troubleshooting Boot time issues.
    • Troubleshooting Veritas Plex level issues.
    • Veritas Cluster Server configuration.
    • VCS resource and service group level configuration changes and troubleshooting.
Routine Activities in HCL Technologies    
    • Administering and managing the servers with Solaris 8,9 and 10 OS versions on different hardware platforms.
    • Monitoring & managing server’s performance for optimization.
    • UNIX Printer Configuration and Troubleshooting.
    • Configuring and managing sudoers, SNMP, sendmail services.
    • Creating scripts and scheduling them as cron jobs.
    • Setting up samba service and allowing users to access samba shares.
    • Working on issues related to sticky bit, setuid, setgid and ACLs.
    • Analyzing network, disk, and processor performance statistics.
    • Configuring NTP service for time synchronization.
    • Troubleshooting Solaris Volume Manager Issues.(disk failures,meta database corruption etc)
    • Creation and online administration of veritas volumes.
    • VCS resource and service group level configuration changes and troubleshooting.
    • VCS upgrades to latest support versions.
    • Installation of SuSE/Red-Hat Linux.
    • Managing various services(network,sendmail,multipathing etc) services on SUSE/Red Hat Linux
    • Creating and Managing Linux objects like Physical volumes, Volume groups and logical volumes.
    • Troubleshooting Linux Booting issues.
    • Managing services thru RedHat Cluster.Enabling,Disabling and Relocating
    • Checking and Troubleshooting GFS,qdisk,rgmanager and cman issues
    • Installation of Solaris and Linux OS on different Hardware platforms
    • Working closely with database,network and other related work groups
    • Configuring new interfaces and defining default routers
    • Installation and management of virtual machines on VMware platform
    • System resource allocation to virtual machine for improved performance
    • Working to analyse performance statistics for preparing service improvement plans
    • Well versed with ITIL processes which are benchmark for any service based organization
    • Knowledge on RedHat Linux Cluster Administration.
    • Managing resource groups:Enabling,Disabling and Relocating
    • Managing GFS,cman,clmd,qdisk and rgmanager services.
    • GUI experience of Redhat Openstack product
    • 

Technical Skills

Linux OS Administration:

    • Installing/upgrading RHEL/CentOS/SUSE Linux OS on Virtual Machines built at ESX level. And Physical servers
    • Clear understanding OS multipath on Linux
    • User management through sudoers
    • Network configuration and NIC bonding of Linux servers
    • Allocation of new storage and scanning them at OS level for managing LVMs
    • Handling OS boot time issues.
    • LDAP user and client management
    • Performance analysis at  disk,network,memory,processor levels
    • Effective usage of top,vmstat,iostat,nload,tcpdump,snoop during performance issues
    • Creation and Management of Physical volumes, Volume groups and Logical Volumes.
    • Configuration of autoFS mounts
    • Experience in handling ext3,ext4 and xfs filesystems
    • Hands on experience in administration of Sendmail,NTP
    • Clear understanding of Linux server backups in Arcserve and Veritas products
    • High level understanding Redhat Openstack
    • Knowledge on RedHat Linux Cluster Administration.
    • Managing resource groups:Enabling,Disabling and Relocating
    • Managing GFS,cman,clmd,qdisk and rgmanager services.
    • GUI experience of Redhat Openstack product

 Devops:

    • Installation and management of puppet master and client nodes
    • Planning and executing regular Linux OS updates through Puppet
    • Clear understanding about puppet modules, manifests  and other components
    • Create and install own puppet modules by using puppetforge modules
    • Troubleshooting issues while deployment on client nodes
    • Deployment of docker containers through Puppet
    • Perform timely configuration deployment tasks using Ansible Playbooks
    • Making effective usage of Ansible documentation for writing relevant yml codes
    • Keeping Ansible inventory upto date for successful deployments
    • Ensuring password less ssh communication for smooth Ansible deployments
    • Troubleshooting issues with ansible modules,roles,notifier and handlers
    • Build and deploy dockers through docker file and docker hub images
    • Sharing volumes between docker host and containers
    • Making sure port forwarding for docker containers for security purpose
    • Deployment of dockers using docker file
    • Configuration of docker swarm cluster for high availability
    • Managing separate overlay networks for our docker swarm cluster
    • Experience of using docker toolkit in some customer environments(docker machine,docker compose)
    • Clear understanding of Kubernetes components
    • Usage of “kubelet” utility for creating different Kubernetes objects(pods,deployment,service) and implement blue green deployment models for rolling updates and rollbacks
    • High level understanding of Jenkins during deployment tasks for integration purpose
    • Managing Jenkins users, security for different projects
    • Understanding and implementing Jenkins pipeline
    • Jenkins master-slave design for executing  devops stages
    • Job automation through Poll SCM,crontab
    • Understanding of maven build automation tool use in Jenkins from operations point of view
    • Well versed with git operations: diff,stash,rebase,merge,checkout,clone,fork,pull,push
    • Managing git branches ,remote repositories using github
    • Adding different hosts in Nagios for monitoring purpose
    • Understanding about Nagios architectuire

AWS Infrastructure Administration:
    • Knowledge on key Amazon Web services like EC2, IAM, S3, ELB, VPC, ,CloudTrail,Cloud Watch 
    • Launching Amazon EC2 Cloud Instances using Amazon Web Services (Linux/ Ubuntu) and Configuring launched instances with respect to specific applications. 
    • Configured auto scaling policies to scale up/down EC2 instances based on ELB health checks and created alarms to be used in auto scaling decision making policies.
    • Included security groups, network ACLs, Internet Gateways, and Elastic IP's to ensure a safe area for organization in AWS public cloud and for controlling Inbound/Outbound access to EC2 instances
    • Created elastic load-balancers (ELB) for different applications to provide high performance of applications
    • Managed storage in AWS using Elastic Block Storage, S3, created Volumes and configured Snapshots.
    • Created periodic EBS snapshots and rebuilt new EBS volumes from these snapshots to migrate applications
    • Using AWS Storage gateway for scheduling backups for on-prem servers to the AWS Cloud
    • Experienced in configuring AWS S3 and their life cycle policies
    • Created S3 backups using versioning enable and moved objects to Amazon Glacier for archiving purpose
    • Utilized Cloud Watch to monitor resources such as EC2, CPU memory,EBS volumes; to set alarms for notification or automated actions; and to monitor logs for a better understanding and operation of the system
    • Responsible to create various Cloud Watch alarms that sends an Amazon Simple Notification Service (SNS) message when the alarm triggers.
    • Used Amazon IAM to grant fine-grained access to AWS resources to users. Also, managed roles and permissions of users to AWS account through IAM