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Srinivas Reddy - System Administrator

[email protected]

Location: Dallas, Texas, USA

Relocation: Yes

Visa: H4EAD

Managing, Leading and designing infrastructures environments. Aiming to be associated with a progressive organization that gives me the scope to update knowledge and skills in accordance with latest trends and be part of a team that dynamically work towards the growth of the organization and gain satisfaction. Having a strong desire to work as Infrastructure Administrator in the Heterogeneous Environment. Strong in communication abilities and learn new technologies as per requirement. SUMMARY: Unix, Linux and AWS, Azureprofessional having 16+ years of experience in the IT industry. Expertise in Red Hat Linux, Solarisand cloud solution design and deployment on AWSand Azure,python scripting, ansible,JASON, veritas cluster and veritas volume manager. CORE SKILLS: LINUX: Installation Linux (RedHat) on physical (HP/DL) and Virtual. Security health and hardening servers according to Tech-spec. Installation, configuring andadministration of ubuntu20.04 LTS. Create and maintain file system and housekeeping on file system. Experienced in RPM package administration and LVM Administration. Prepare server documents for future reference. Worked with vendors. Design; implement best solutions for production environment. Responsible for Incident, Change, Release and Problem management. Responsible for the Installation, configuration, and upgrades on RHEL software packages , periodic update like applying kernel patches, fixes. Finding best practices and doing process improvement activities. Installed, Configured and Administration of LVM. Configuring LUN, Disk Storage Management in RHELand working with volume manager and extending space in file system. Adding CPU and Memory for Linux virtual machines through ESXi. Installing of software packages and patches on Redhat Linux servers. Configuring and administration of satellite server. OVM(Oracle Virtual Machine): Hands on experience on Oracle VM Server Virtualization. Design and implementation of oracle VM servers. Administration of VM servers and virtual machines using OVM manager. installation and configuration of ovm manager. configuring serverpools and storage repositories. ocfs2 file systems on repositories. installation of OEL on virtual machines. SOLARIS: Installation and configuration of solaris9/10/11. Design and implementation of LDOMS on Solaris 10/11 on sparc T5-2 servers. Security aspects, monitoring, and administration of Solaris systems (version 9&10&11 on SUN Sparc servers). Monitoring the File System and CPU load for better performance in SUN Performance Tuning. Responsible for monitoring system performance and supporting servers to improve the performance. Configuring boot disk under SVM (Solaris Volume Manager). Sole and lead responsibilities included: User Administration, File system management and monitoring system activity. Involved in Disaster recovery activities. Adding packages and patches. Configuring Solaris Zones. Managing System Services using SMF (Service Management Facility). Worked on all different severs like v125 v240 v210 v490 v890 E6900 E20k E25k,sparc T5-2. Working Knowledge on Hardware analysis. Setup and Managing of NFS. File system management, user accounts, Quotas and Job automation. Configuring NIS server. AWS Cloud: Skilled in implementation of various AWS Resources & deployment using EC2, VPC, S3, Route53, SNS, IAM (Identity Access Management), Cloud Watch, EBS, ELB,Lambda, Cloud Front, Auto Scaling. Creating network architecture on AWS VPC, Subnets, Internet Gateway, Route Table and NAT Setup. Managing AWS EC2 instances utilizing Auto Scaling, Elastic Load Balancing IAM to create new accounts, roles and groups. Perform creation of AMIs and Snapshots as backup of running instances and volumes AZURE Cloud: Skilled in implementation of various Azure Resources & deployment using VM, Vnet, storage account, DNS zone,Azure Active directory, App Gateway and Azure load balancer,CDN and Virtual machine scaleset. Creating network with Vnet, Subnets, Vent peering ,Route Table, and NAT Setup. Managing Azure VMs using Auto Scaling, APP gateway Azure AD to create new accounts, roles and groups and provide Role based access Perform creation of Snapshots as backup of running instances and volumes. Monitoring the Azure resources using Azure monitoring metrics and logs. VERITAS Volume Manager: Installation VERITAS Volume Manager. Creating Disk Groups, Sub disks, Plexes and Logical Volumes. Volume Management Creating, Resizing and troubleshooting. Volume Layout Management Concatenate, Stripe, Mirror. Volume Layout Conversion Layered to Non-Layered and vies-versa. Upgrade Volume Manger. Storage Migration of Disk groups. Troubleshooting on various levels of Volume status. VERITAS Cluster Services: Installation of VERITAS Cluster. Configuration of VERITAS Cluster Online/Offline. LLT, GAB and HA configuration & troubleshooting. Failover Management - Auto-Failover and Manual-Failover of a service group. Monitoring and troubleshooting of service Groups in VCS. Service Group Freezing & System Freezing. Configuring I/O fencing to avoid split brain PROFESSIONAL EXPERIENCE Client: Deutsche Bank, Jacksonville, FL Sep 2023 to present System Administrator. Administration of Solaris&Linux enterpriseinfrastructure. Involving in run time operations which includes incident, change and problem management. Supporting the Sparc-T/ProLiant DL360/380 servershardware. Administration of VXVM and VCS. Responsible for Day-to-day systems administration tasks in Solaris, Redhat Linux. Administration of LDOMS on Solaris 11 and zfs volumes Troubleshooting the issues related to SRDF. Working with hardware vendors HP /Oracle to replace the failed hardware (disks/memory/cpu/cache battery). Fixing the issues related to TSM backup. SVM mirroring of root disk and replacing the failed mirror disk Recovering the Linux servers using Rear(relax and recover). Working on system performance issues. Working on the requests from application and DBA team. Installing and configuring veritas infoscale. Administering the VCS service groups and resources. Creating resources and service groups as per requirements. Online, offline and switch the service groups. Configuring the I/O fencing to handle the split brain. Client: AVEVA, Houston, TX Aug2021 to August 2023. Linux/Unix/AWS Administrator Installation and configuration of RHEL servers on HP ProLiant and VMware ESXi. Configured volume groups and logical volumes, extended logical volumes. Upgrade RHEL 6 to 7 and RHEL 7 to 8. Patching RHEL/Ubuntu server with Ansible automation. Administration of Red Hat satellite server Performing system admin tasks using ansible. Perform troubleshooting and monitoring of the Red Hat Linux . Recovering the Linux servers using Rear(relax and recover). Creating and Managing the Virtual machines in VMware ESXi Converting P2V, V2V using VMware converter. creating snapshots of VMware VMs. Installing VMware tools. Incident, change and problem management. Writing UNIX shell scripts to automate the jobs and scheduling cron jobs. working with vendors to provide RCA. involving in disaster recovery exercises. Creating ec2 instances as per build sheet. Built S3 buckets and managed policies for S3 buckets. Good Experience in designing and configure VPC and subnets in AWS. Configuring VPC peering. Configuring ELB and autoscaling groups. Monitoring the instances with CloudWatch. DXC Technology Client: Hawaiian Telcom March-2012 to March-2021. Senior Professional System Administrator. Administration of UNIX (Solaris & Linux ) enterprise infrastructure with L3 administration & support. Design and implementation of OVM virtualization with setting up ovs servers manager and repositories. Patching of RHEL6,7 /OEL 6,7 and Solaris8/9/10. Involved in building RHEL/OEL VMs on both OVM and VMware. Firmware upgrade on SPARC T & M servers and HP ProLiant servers. Installation and configuration of Solaris 8/9/10 on v240 v210 v490 v890 in DR exercise. Backup Solaris 9/10 servers using flar and restore with jumpstart in disaster recovery. Responsible for Day-to-day systems administration tasks in Solaris, Redhat Linux. Design and configure LDOMs on solaris10/11 and migrating the legacy Solaris servers to LDOMS as zones. Patching of solaris10/11. zfs snapshots backup for solars10/11 rpools and ldoms configuration backups and restore. SVM mirroring of root disk and replacing the failed mirror disk. Installation /configuration/administrationof ubuntuLinux servers. Install and configure veritas cluster and VxVM. Creating resources for resource type and creating service groups in VCS. Configuring LLT/GAB in VCS. Freezing vcs service groups and systems. Configuring I/O fencing in vcs to avoiddata corruption caused by split brain. online/failover/switchover VCS service groups. Migrationsserver from Physical to Virtual, Virtual to Virtual. Administrating the File system creating, growing. Creating users, groups in Azure Active directory. Providing Role-based access Creating azure VMs as per the customer requirement. Creating and administering the storage accounts. Implementing Azure VMSS with APP gateway. Involved in creating Azure Vent, subnets and NAT gateway. Implementing service end point and private link. Implementing NSG and ASG in Azure. Automation regular system tasks with python scripting. Experience in handling Escalated issues & Identify problems and coordinating with different lines of services to ensure that SLA's are never missed and lead to resolution of any technical issue. Monitoring infrastructure performance, anticipating and proactively responding to capacity recovery for resolving business continuance issues. Disaster recovery planning and implementation. Incident/Problem/Change/Release management and preparation of RCA report. CSC INDIA PVT LTD Client: Zurich Financial Services Sep-2010 to March-2012. Senior Engineer System Administration Handling all types of UNIX requests. Hardware and software up gradation in Solaris environment. Volume administration, Expansion, Adding of disks etc, through VERITAS Volume Manager & SVM. Troubleshooting the issues generated by automated alerts through NSM. Handling all hardware replacements like disk, cpu ...etc. Applying critical kernel patches using Live upgrade. Upgraded the OS using Live upgrade. Upgrading firmware level. Creating and administrating the Zones. Storage foundation (Vxvm) installation and configuration. Disks initialization in VXVM environment. Creation and removal of Volumes. Increasing the file system size (VxFS). Migrating disk from one node to another node and taking backup using VERITAS snapshots. Basic administration& troubleshoot of VERITAS cluster. Switching the service group one node to another node. Installing the software requested by Apps team and coordinating all teams. Luns discovery with qlc cards, luns discovery with lpfc cards. Coordinating with DBA and Application to configure their applications. Working on Problem management to reduce the incidents. Trouble shooting for Application Autosys jobs and backup jobs failure related issues and running them manually. Backup and restoration using Veritas NetBackup and native tools ufsdump, tar, flar,cpio,dd. . Tech Mahindra Ltd Client: AT& T Feb-2008 to Sep-2010. Senior Technical Associate. Coordinating with customer, hardware vendors, and other support groups to investigate and resolve problems. Creating Change Requests for implementation of specific task. Involved in administration / installation / upgrade and maintaining of Sun Servers. Taking part in regular OS related issue, patch updating and OS upgradation. Handling issues on SUN Enterprise, Midrange and Entry level servers. Work with DBA and Application team to resolve day to day issues on sun servers. Administration and Maintenance of SunCluster3.1. Server Virtualization using Solaris zones. Troubleshooting hardware / software problems and provide solutions. Responsible for change management, troubleshooting and resolution of server problems and for end users support. Administration and maintenance of Veritas Volume Manager and Veritas Cluster. Perform daily maintenance routines on servers, monitoring system access, managing file space and tuning the system for optimum performance. Working with Vendor like Sun, Symantec regarding cases. Adhereing to Process followed at AT&T. Provided 24x7 and on call coverage for mission critical production systems. Certifications: Solaris 10(SCSA-1 & SCSA-2). AWS Certified Solution Architect Associate Education: Graduation in Mechanical Engineering completed in 2003. Keywords: sthree active directory information technology hewlett packard Florida Texas