Infrastructure Services Aws Cloud

Srinivas Gadde

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Experience Summary:

Have around 10 years of working experience and detailed technical knowledge on UNIX/Redhat Linux System Administration and AWS cloud infrastructure services.

Experience in installation, Configuration, Implementation, Upgradation, Maintenance of all Red Hat Linux/Centos/Oracle Enterprise Linux servers.

Proficient in setting up and managing virtualization technologies such as VMware, or Virtual Box.

Implementing Infrastructure as Code using tools Terraform. Ansible, Puppet, Git Lab.

Skilled in designing, deploying, and maintaining Linux-based server infrastructure for various applications and services.

Working and good knowledge on VMware Administration.

Virtual Servers compatibility upgrade and managing the storage and hardware (CPU, Memory, RAM, Disks, Network cards) of virtual servers.

Leading the OS migration from RHEL 6X to 7x & 8x and Centos 6x to 7x providing end-to-end support during application and DB (Oracle, PostgreSQL, My SQL, Cassandra, Redis,) migration.

Making the password-less authentication and configuration by using SSH.

Working knowledge on user and group administration and managing the special and advanced file permissions ACL’s, SetUID, SetGID, and Sticky Bits.

Networking, kernel Parameter and tuning, Troubleshooting System and performance Issues, Package Management (YUM/RPM), Patch Management and Development Operations.

Managing and leading the team to ensure they meet the SLA of incidents and change tasks.

Implementing and maintaining CI/CD pipelines to automate application deployment, testing, and monitoring using tools such as Jenkins, and GitLab.

Working Knowledge in AWS Cloud platform and its services which include EC2, VPC, EBS, Cloud watch, ELB, IAM, VPC Peering, RDS and S3, EFS, and Cloud watch.

Implementing advanced security measures such as IAM roles, policies, and permission boundaries to ensure least privilege access.

Working experience in AWS via the CLI and management console. Knowledge and experience in architecting and configuring Virtual Private Clouds (VPCs).

Working knowledge in creating and maintaining the Amazon machine Images.

working with the design and implementation of servers and applications at Amazon Web Services (AWS).

Extensive experience in configuring and maintaining network-attached storage (NAS) and storage area networks (SAN).

Strong hardware knowledge and experience (i.e., HP, Cisco, Lenovo, Dell,).

Upgrading the firmware of physical servers and actively supporting the DC team to replace the failed hardware like drive replacement, battery, Power supply, cable checking, HBA card replacement, system board, NIC card if any are faulty.

Ansible playbook creation for software patches/package/agent installations and removal.

Implemented backup and disaster recovery strategies using tools like rsync, tar, and cloud storage solutions.

Knowledgeable in networking concepts and able to configure and manage network services, such as DNS, DHCP, and firewall rules.

Good knowledge on Docker and Kubernetes.

BAU support on Unix servers [RHEL Linux/AIX/Solaris]

Performing NIC bonding on Linux Systems for redundancy.

Working and troubleshooting day-to-day problems via opening and closing tickets.

Management of user calls and vendor calls.

Excellent problem-analytical and troubleshooting skills.

Possess excellent communication skills and strong interpersonal skills, which provide the ability to interact with customers, end-users, managers, and technical personnel.

Installation and configuration of Linux servers using Ansible and Puppet.

Experience in security patching vulnerability management processes and OS patching on servers from Red Hat-satellite server.

Creation and management of user accounts and groups, login tiers policies in AD.

AD Authentication using SSSD on Red Hat and Centos Servers.

Recovering the VM servers from the latest snapshots backup and Rubrik backup.

Managing Kernel patching and tuning kernel parameters in serves.

NFS and Samba share management.

FTP and SSH server/client management.

Managing and involving in IBM MQ upgrade activity.

Managing storage and creating and extending the volumes in LVM and VERITAS Volume Manager.

VCS Cluster resource management and monitoring.

OS and Application performance monitoring.

Performance tuning and troubleshooting performance issues reported by Application and DB team.

Storage LUN and Multipath management.

OS installation and Raid configuration on Physical Servers.

Hardware replacements, firmware and ilo management on Physical servers.

Virtual server management on vSphere.

Management of SSL certificates for HTTPD

Physical and virtual Server decommissioning.

Creating, Resizing, Importing and Deporting of Disk Groups on VXVM.

Placing disks under VxVm control - Initializing the disks, creating volumes, file systems& and mounting them.

Increasing the file system size by using Vxassist and Vxresize.

Knowledge in VERITAS cluster server administration.

Bringing the Resources to online and offline.

Starting, stopping, enabling and disabling the service groups.

Freezing, and switching service groups in VCS during the maintenance.

Troubleshooting resource failure issues and bringing them online.

Certifications/Trainings:

AWS Certified Solutions Architect Associate.

Skills:

Operating system: Red hat Linux 6&7&8&9, ubuntu, IBMAix, Centos, Oracle Linux

Network/File Services: FTP, NFS, SAMBA, TCP, UDP, SFTP, SNMTP

Clustering: VERITAS Cluster,

Volume Management: Linux LVM, VXVM, VCS

Tools: Service Now, Jira, and BMC Remedy

Virtualization: Esxi, vSphere, KVM

Configuration Management: Ansible, Starfleet, Puppet, Terraform

Source code management: GIT Lab

Monitoring Tools: ITMS, App Dynamic, Dynatrace, OBM, ELK, Kibana

Scripting: Shell Scripting, Python

Cloud Platform: AWS (EC2, ELB, Route53, S3, Cloud Front, SNS, RDS, IAM, VPC, Lambda, Cloud Watch)

Continuous Integration: Jenkins, GitLab

Containerization Tool: Kubernetes, Docker

Messaging System: IBM MQ

Education:

Master of Computer Application (MCA) from Andhra University, Visakhapatnam 2011-2014

Professional Experience:

Client: Telnet January 2022 – Till date

Role: Senior Linux Administrator

Responsibilities:

Installation, Configuration, Implementation, Upgradation, and Maintenance of all Linux servers on AWS Cloud and on premises.

Hands-on experience in automating infrastructure provisioning using tools like Ansible, Puppet, and Terraform.

Skilled in designing, deploying, and maintaining Linux-based server infrastructure for various applications and services.

Delivered 24x7 OS support to more than 5000 mission-critical servers running Database and Applications on Linux boxes.

OS migration from RHEL 6X to 7x & 8x and providing end-to-end support during application and DB (Oracle, PostgreSQL, My SQL, Cassandra, Redis,) migration.

Implementing advanced security measures such as IAM roles, policies, and permission boundaries to ensure least privilege access.

Working experience in architecting and configuring Virtual Private Clouds (VPCs).

Creating and maintaining the Amazon Machine Images (AMI).

Implementing and maintaining CI/CD pipelines to automate application deployment, testing, and monitoring using tools such as Jenkins, and GitLab.

BAU support on Unix servers [RHEL Linux/Centos/Solaris]

Networking, kernel Parameter and tuning, Troubleshooting System and performance Issues, Package Management (YUM/RPM), Patch Management, and Development Operations.

Configuring and maintaining network-attached storage (NAS) and storage area networks (SAN).

Deploying Centos/Oracle/Red Hat Enterprise Linux serves in various environments, such a virtual machine, cloud platforms.

Managing the hardware (i.e., HP, Lenovo, Oracle, Dell,).

Upgrading the firmware of physical servers and actively supporting the DC team to replace the failed hardware like drive replacement, battery, Power supply, cable checking, HBA card replacement, system board, NIC card if any faulty.

Implementing advanced security measures such as IAM roles, policies, and permission boundaries to ensure least privilege access

Implemented backup and disaster recovery strategies using tools like rsync, tar, and cloud storage solutions.

Installation, Configuration, Implementation, Upgradation, Maintenance of all servers on Cloud.

Security and OS patching on servers from Red hat-satellite server.

Ansible playbook creation for software/package/agent installations and removal.

Provide Assistance in root cause analysis of critical problems

Creating and managing the users, group, and authentication in AWS IAM.

VCS Cluster resource management and monitoring.

OS and Application performance monitoring.

Performance tuning and troubleshooting performance issues reported by Application and DB team.

File system management on volume managers (LVM&VXVM).

Monitoring CPU, Virtual memory, Disk, Network Performance.

Involving in V2V migrations.

Storage LUN and Multipath management.

Management of SSL certificates for HTTPD

Virtual Servers compatibility upgrade and managing the storage and hardware (CPU, Memory, RAM, Disks, Network cards) of virtual serves.

OS installation and Raid configuration on Physical Servers.

Hardware replacements, firmware and ilo management on Physical servers.

Virtual server management on vSphere.

OS migration and providing end to end support during application migration.

Physical and virtual Server decommissioning.

Creating, Resizing, Importing and Deporting of Disk groups on VXVM.

Placing disks under VxVm control - Initializing the disks, creating volumes, file systems & mounting them.

Increasing the file system size by using Vxassist&Vxresize.

Environment: RedhatLinux-6&7&8, Centos, OEL, BMC Remedy, JIRA, VMware, ESXi, UC4, Netprobe, Ansible, Git Lab, puppet, sssd, AD, shell scripting, OBM, Dynatrace, Elastic Search, Kibana, Splunk, crowd strike, Terraform, Ansible EC2.

Client: CITI Bank November 2018 – January 2022

Role: Linux Administrator

Responsibilities:

Maintained Remote Infrastructure Management Support for more than 20000 High end and Mid-Range servers.

Experience in Remote Infrastructure System Support using Tivoli to get an Alarms & Tasks using Ticket based architecture to perform day-to-day System Admin activities with ITIL standards and maintained 99.9% SLA.

Delivered the 24x7 OS support to more than 18000 mission critical servers running Database and Applications on Linux boxes.

Installation, Upgradation, Configuration, Maintenance, Patch/Package management and Troubleshooting of the Operating systems and Services.

Managing users, groups, hosts and file systems.

Scheduling of automatic repetitive jobs with Crontab and CRS Tool.

Good knowledge of creating and managing the swap.

SSH configuration.

Installing and Updating Packages using RPM and YUM

Service management knowledge (start and stop the application services)

Installing, Updating and managing the Autosys agent and Netprobe.

Process Management Monitor, kill

Experience in handling NFS, FTP,

File system management on volume managers (LVM&VXVM).

Monitoring CPU, Virtual memory, Disk, Network Performance.

Involving in V2V migrations.

BAU support on Unix servers [RHEL Linux/AIX/Solaris]

Conducted Disaster Recovery Procedures.

Hardware Maintenance and coordinating with Vendors accordingly like RedHat and IBM.

Working with DC Team for replace the failed hardware like (hard disk, memory, Battery, System board) .

Application software installations upon client’s request.

Backup and restore using VERITAS NetBackup.

Worked mainly on RHEL servers supporting all the OS administration, application, and hardware issues.

Interact with users from Application teams and fill their needs (Install, Upgrade and Troubleshoot).

Supporting critical applications and proprietary development environments.

Troubleshooting network, application, and server related issues.

Linux tasks:

Providing Remote administration of Linux Servers.

Basic user management of creating, modifying and deleting.

Quota management on disk and providing access rights.

Managing and involving in IBM MQ upgrade activity.

Configuration of volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands...

Creating Volume Groups, logical Volumes and File Systems ext2 and ext3.

Working on File system problems, incidents, and service requests.

Regular backups & restoring files, password recovery.

User Administration tasks such as create users, define or changes their attributes, and define the security environment for the users.

Mounting and Un-mounting the NAS file systems based on user requests.

Supporting COB tests.

VXVM&VERITAS Cluster Server:

Creating, Resizing, Importing and Deporting of Disk groups on VXVM

Connecting to Vcenter and Adding the new disks to VM Servers from VMFS datastores

Placing disks under VxVm control - Initializing the disks, creating volumes, file systems& mounting them.

Increasing the file system size by using Vxassist&Vxresize.

Knowledge in VERITAS cluster server administration

Bringing the Resources to online and offline.

Starting, stopping, enable and disable the service groups.

Freezing, switching service groups in VCS during the maintenance.

Troubleshooting resource failure issues and bringing them online

Environment: RedhatLinux-5,6&7, AIX, Solaris, Veritas Cluster, VxVM, service now, JIRA, VMware, ESxi, AIX, Solaris, ITMS, Netprobe, Nagios, Autosys, Ansible, Starfleet, shell scripting.

Client: Ericsson January 2014 – October 2018

Telecom Network

Role: System Administrator

Description:

Ericsson is a telecom network in Sweden where we support 1000 Linux servers and helping users to install and configurations for QA environments to test their scripts.

Responsibilities:

Experienced in the installation, support, configuration, and maintenance of Red Hat Linux systems (RHEL- 5.X/6, 7, ubuntu).

As part of E3-EST team daily we are working on TE Fault and changes request type as per SLA.

If any issue is related to Connectivity and Physical server issues contacting L1&L2 to get them resolve.

Daily working on issues related to Linux servers based on SLA.

Proactively working on the issues related to user and server access.

Part of installation of patches and scheduling the changes without impacting business.

As per the business requirement creating Linux VM’s on top of ESXi and KVM servers.

Setting up the Proxy in the servers and as per user requests installing the packages.

SSH configurations

Installing and Updating Packages using RPM and YUM

Service management knowledge (start and stop the application services)

Process Management Monitor, kill.

Experience in handling NFS, FTP,

If any issue is related to STC (Spirent test center) Responsible for raising the cases and coordinating with STC team to resolve the issue.

If any issues related to other towers (Windows and Network) to resolve that actively working with Windows and Network teams.

Create and configuring STC VM’s on top of ESXi servers.

Resolving the login issues and creating new user accounts, assigning the permissions.

Looking on the services issues of the servers which are not running as per schedule.

As per the user’s request granting access (ACLS&Special Permissions) to the files and directories.

Support, maintain, test and troubleshoot hardware and software problems.

Environment: Red hat Linux 5,6&7, STC, JIRA, VMware, ESxi, shell scripting, KVM.

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