Issac M
Bengaluru
Summary
Result-oriented Systems Administrator with over 2+ years of experience in configuring, provisioning and maintaining Linux-based infrastructure. Highly efficient in performing administrative tasks across multiple platforms (Red Hat, CentOS). Proven to provide organizational development and systems/network optimization. Looking to be a major asset in automating and sustaining mission critical systems in a new project. Motivated Linux System Administrator with proven knowledge in various open-source operating systems. Committed to improving network uptime and system availability.
Overview
3
3
years of professional experience
Work History
Systems Engineer
PointCross.com Pvt Ltd
12.2022 - Current
- Installed, configured and updated RedHat and CentOS servers.
- Worked on user administrating setup and maintaining account.
- Monitored system activities like CPU, Memory, Disk and Swap space usage.
- Upgraded packages and patched systems to maintain a secure production environment.
- Resolving issues ranging from desktop not booting up to server being sluggish.
- Performing NIC bonding on RedHat systems for load balancing.
- Performed RHEL administration including installations, maintenance and monitoring to meet requirements in production, staging and test environments.
- Job scheduling and automating process using CRON & AT.
- Basic creation and troubleshooting on bash scripts.
- Performance troubleshooting with tools TOP, VMSTAT, IOSTAT and PS.
- Deployed and configured Yum local Repository Server for package management.
- Configuring NFS server and mount exported NFS resources at the client side.
- Configure NTP client on servers to synchronize time zone with the NTP server.
- Manipulated Kernel Modules and Kernel Parameters.
- Handled scripting tasks for debugging and automation using Bash.
- Delivered helpdesk service and support to customers.
- Documented system configuration, mapping and processes.
- Managed and monitored installed systems for highest level of availability.
- Oversaw development and maintenance of organization computer systems and intranet.
- Configured, installed, and upgraded SQL databases.
- Handled scripting tasks for debugging and automation using Python.
- Monitored system health using various performance metrics, quickly addressing any potential bottlenecks or resource limitations.
- Improved system performance by identifying and resolving technical issues in a timely manner.
- Streamlined troubleshooting processes to improve system support and enhance communication between support team and end-users.
Systems Engineer Intern
MIRRAR INNOVATION TECHNOLOGIES Pvt Ltd
08.2021 - 07.2022
- Worked on provisioning, configuring, deploying and administrating RHEL 6 and 7 servers.
- Configured and manage servers including NFS, DNS, SSH, DHCP, FTP, and TFTP.
- Experience with core AWS services like EC2 Instances, S3, IAM and VPC.
- Technical support in troubleshooting installations & configuration of Linux systems.
- Monitor health of infrastructure servers and mission critical machines using Grafana and Prometheus.
- Responsible for complete user management which includes creating, modifying, and closing user accounts.
- Creating and extending file systems: EXT 2,3,4 and Xfs.
- Configured different hardware raid levels (0, 1, 5, 6).
- Worked with sudo privileges for adding and deleting user accounts.
- Set up NFS servers and troubleshoot NFS related issues.
- Experience in supporting and implementing security on Linux using SELinux and Iptables/Firewall.
- Handled scripting tasks for debugging and automation using Bash.
- Designed high availability strategies to minimize downtime during critical systems outages or disasters recovery scenarios.
Education
High School Diploma -
KARAIKAL POLYTECHNIC COLLEGE
Karaikal, India04.2017
Skills
- Linux RedHat, CentOS 7/8 servers
- TCP/IP, UDP, DNS, DHCP, Ping, Nslookup, Traceroute, TCPDump, Iptables, and Netstat
- Bash script
- Python script
- Exposure to Cloud Platforms such as Amazon Web Services and version control with git
- Nagios, Apache, HTTPS, NFS, Telnet and SSH
- Apache, TCP/IP
- Apache web server, Technical support
- Automation, Technical assistance
- Bash, Telnet
- Closing, Troubleshooting
- Hardware, Upgrades
- CPU, Upgrade
- Client, Utilities
- Version control
- DHCP
- DNS
- Firewall
- FTP
- Linux
- Memory
- NFS
- Network hardware
- Network
- Networking
- OS
- Processes
- RedHat
- Scheduling
- SSH
- Servers
- Scripts
- Software installation
- Ansible playbooks (yaml)
- PowerShell
Project
Developed a robust shell script (bdr.sh) for PointCross Inc. to backup HDFS data to a local drive. The script includes functionalities such as creating snapshots, performing differential backups, handling special characters, and sending success/failure emails based on the backup's outcome.
Key features include:
• Snapshot creation and differential backups using HDFS.
• Error handling, retry mechanisms, and detailed logging.
• Automated email notifications for backup success or failure.
• Restoration of data from local backup to HDFS.
• Compatibility with various special characters and directory structure
Languages
English
Advanced (C1)
Tamil
Bilingual or Proficient (C2)
Kannada
Upper intermediate (B2)
Timeline
Systems Engineer
PointCross.com Pvt Ltd
12.2022 - Current
Systems Engineer Intern
MIRRAR INNOVATION TECHNOLOGIES Pvt Ltd
08.2021 - 07.2022
High School Diploma -
KARAIKAL POLYTECHNIC COLLEGE
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