Dinesh Kumar Reddy Gogireddy

Linux Administration & Operations:

• Troubleshoot and resolve SUSE Linux server issues (filesystem checks, kernel panics, load/memory issues, downtime).
• Execute system patching and upgrades across SUSE Linux versions.
• Perform critical tasks including DNS zone transfers, zone forwarding, and system migrations.
• Manage logical volumes (creation, extension, resizing) and optimize file systems.
• Set up and maintain SFTP services and Squid proxy servers, ensuring secure file transfers.
• Handle user, group, and package management while building robust server environments.

AWS Cloud Operations:

Compute & Instance Management:

• Troubleshoot dedicated server issues on AWS Metal Host; resolve AWS EBS volume modifications and EC2 instance status check failures.
• Provide guidance on Reserved Instance cost optimization, execute instance resizing, and manage capacity reservations.

Backup & Recovery:

• Implement ad hoc backups, configure file system (FS) backups, create/manage snapshots, and extend backup retention periods.
• Diagnose AWS FS backup failures and perform restore operations, including troubleshooting S3 copy errors.

Network & Security:

• Configure AWS Transit Gateway for efficient data transfer and manage DNS settings for Internal Load Balancers.
• Establish secure VPC peering connections and implement isolation measures for customer and CGS servers.
• Enhance network scalability by adding subnets and fine-tuning Security Group rules—including increasing limits and lifting port restrictions (e.g., port 25).

Storage Management:

• Oversee the transfer of ALB access logs to S3 and execute disk type conversions (GP2 to ST1; GP2 to GP3 for SWAP).
• Extend disks and LVM partitions to optimize storage capacity and manage EC2 instance disk modifications.
• Streamline EFS operations by migrating modes (Bursting Throughput to Provisioned Throughput) and applying encryption measures for both EFS and root EBS volumes.
• Utilize UUID-based block ID mounting to perform efficient storage resizing.

Azure Cloud Operations:

Backup & Recovery:

• Implement snapshot backup and restore processes for SAP HANA databases.
• Extend retention for ad hoc FS backups, configure CIFS mounts for Azure file backups, and execute FS restore operations for Linux VMs.

Compute & Migration:

• Deploy and upscale virtual machines, join servers to Proximity Placement Groups (PPG), and resolve Resource Health Alerts via redeployment.
• Lead VM migrations across zones and subnets, conduct planned M-series maintenance, and manage Gluster to AFS/BD migrations.

Network Services:

• Configure VNet peering and implement NSG rule enhancements based on customer requirements.
• Facilitate secure SFTP access between on-premises setups and Azure environments.

Automation, Git & Docker Operations:

• Ansible Automation:
  Developed and implemented an Ansible-based AWS patching framework that significantly reduced execution time by automating patching processes across cloud instances.
  Created custom Ansible playbooks for routine maintenance, configuration validations, and automating troubleshooting tasks.
• Git Integration:
  Managed configuration files using Git and GitHub, ensuring version control for critical services and facilitating collaborative updates.
• Docker & Containerization:
  Set up a high-availability Docker Swarm cluster to support essential services such as DNS, Squid, Mail, and NTP as part of our architectural enhancements.
  Created persistent Docker volumes to ensure data durability during container restarts and scaling events.
• DNS & Proxy Configuration:
  Configured DNS forwarding and DNS zone transfers based on customer requirements, with configuration files managed through Git.
  Configured Squid proxy servers and maintained their configuration files under version control using Git.

• Production support of end-to-end processes:
• Installed, configured, and managed Redhat Linux servers
• Handled the complete process of server build via Redhat Satellite
• Conducted decommission of Linux servers
• Managed security patches and upgrades of Linux servers using Redhat Satellite network and Ansible Tower
• Installed and configured NTP, SNMP, and SMTP mail servers
• Installed and configured network servers like NFS, APACHE, SAMBA, and FTP
• Experience in creating and extending the file system using LVM
• Managed rpm packages using Red Hat Package
• Management tools such as YUM and RPM
• Created Ansible playbooks for automation, including:
  - Patching pre and post checks
  - Mail triggering for file system above threshold
  - Net-backup client installation
  - Day-to-day activities automation playbooks