Name : M. Sudhakar

Email : ad073m@r.postjobfree.com

Phone: +91-888*******

Career Summary:

• 3.8 years of progressively responsible experience within the realm of systems administration engineering

• Must function as a member of a team and thrive in a fast paced, interrupt-driven systems environment

• Monitor resource usage, making required recommendations and adjustments

• Participate in on-call production support activities

• Coordinate activities with Vendors

• Responsible for contributing to the development of the organization goals and objectives

• Recommend improvements to facilitate better management and monitoring of the environment

• Proactively create procedures to prevent and reduce the severity of outages

• Assist with the installation, configuration and management of the Linux infrastructure

• Analyze system performance and knowledge of system parameters to improve the utilization of system resources

• Installing and configuring various Linux OS on Physical and Virtual machines.

• Creating Frame on Virtual machines and building the servers using kick start installation.

• User administration on Linux servers.

• Providing access to users using sudoers.

• Configuring and administering NFS and AUTOFS.

• Troubleshooting Day-to-Day issues with various Servers on different platforms.

• Troubleshooting logon problems, boot process and printing.

• Managed Disks and File systems using LVM on Linux.

• Monitored server and application performance & tuning via various stat commands

(vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.

• Installation configuration and Administration of Mail Server Qmail, Sendmail on Linux Servers.

• Taking the Full Responsibility & Owner ship of all the server issues.

• Remote system administration using tools like SSH, Telnet, and Rlogin.

• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.

• Automation of jobs through crontab and autosys.

• Applied appropriate support packages/patches to maintain system integrity.

• Taking care OS and Performance related issues.

• Installing Patches and Packages on Linux Servers.

• Taking care of day to day operations.

• Preparing various Implementation plans on Linux servers.

• Scheduling jobs using cron on solaris/linux servers.

• Mounting storage on LinuxServers.

• Monitoring file systems using df, du, newfs,fsck.

• Remote system administration using tools like SSH, Telnet, and Rlogin.

• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.

• Automation of jobs through crontab and autosys.

• Good Knowledge in checking the log and troubleshooting the issues according to the issue. Preparing scripts on day to day operations on servers.

• Creating Frame on Virtual machines and building the servers using kick start installation.

• Performing system administration activities including installation and troubleshooting Automation of jobs using CRON scheduler Write shell scripts based on the requirement.

• Managing (adding/removing) disk partitions including LVM

• Package management (using rpm and yum)

• Configuration and maintain the RSYSLOG server for a centralized log processing

• User account management – Users and Group creation and customization

• File system management (including files and folder permissions, special permissions and ACL)

• Mounting and un-mounting the file system and maintenance

• Configuring and maintaining servers like NFS, FTP, APACHE and SAMBA

• Mail Server: Setup, configure and troubleshooting postfix server

• Daemon and process management (starting, stopping and refreshing)

• Monitor servers and applications on a regular and on-call basis

• Troubleshooting issues with live production Linux servers

• Handle production incident escalations

• Checking log files of application servers to find out the root cause of issues and troubleshoot

• Work on tickets assigned and ensure tickets meet acknowledgement and resolution SLA

• Collaborate with Infrastructure, Development and QA to resolve production issues

• Performs incident management and change management execution

• Creates and manages capacity and trending reports of system operations

• Checking log files and Answering technical queries of end user

• Installs, tests, tunes, maintains and documents supporting systems, utility programs, monitoring tools, etc.

• Planning & Resolving the Issues within the specified down time. Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.

• Providing day-to-day user administration like adding or deleting users, password aging.

• Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.

• Monitored server and application performance & tuning via various stat commands

(vmstat, nfsstat, iostat etc.,) and tuned I/O, memory, etc.

• Installation configuration and Administration of Mail Server Qmail, Sendmail on Linux Servers.

Education:

• BTech From JNTU Anantapur University in 2015

Work Experience:

• Working as Linux System Administrator for Optum Global Solutions Private Limited

• Working as Linux System Administrator for IBM Kyndryl Bangalore from SEP 2022 to Till Date

Technical Skills:

Operating System

: RHEL 6.x & 7.x, CENT OS, Ubuntu20.04 LTS.

Installation

: CD/DVD, Network (NFS/FTP/HTTP), Kickstart.

Servers : Send mail, Samba, FTP, NFS, DNS

User/group Mngmnt : Creating and maintaining user accounts, commands like user add, group add. Package Mgmt. : RPM and YUM, several command options for rpm Monitoring Tools : SolarWinds, Zabbix

Ticketing Tools

: Service Now

Present Company : IBM Kyndryl

Role: :Linux Administrator

Responsibilities:

• Experience in Handling Large network (2000+) of Production Servers ( Both Physical and Virtual).

• Good Knowledge and Expertise in Linux System Administration Installation and configuration of Red Hat Enterprise Linux,Centos, Ubuntu

• Linux system performance check using various tools and commands like top, netstat, vmstat, who, uptime, ps, mpstat, iostat, sar etc

• Implementing Quota and ACL configuration for users & groups

• Monitoring of Linux Servers using the tools like Orca & Nagios, Cacti, RRD tool & Alert Logic monitoring tool

• Supporting Linux OS up-gradation & Application upgrade, System patching, Application patching, Firewall configurations, Qualys Scans report analysis and fixes

• Installation configuration and maintenance of the Open-Ldap Server also Master-slave replication setup using Delta sync-repl

• Implementation of Heartbeat clustering setup for ldap & POC of Redhat clustering

• Samba, NFS, FTP, LDAP & Autofs configuration and maintenance

• Mail server Send-mail & Postfix configuration and maintenance

• Automation of various tasks using scripting (Bash-Script)

• Supporting Web-Hosting environment

• POC and Implementation of Apache web-server

• Working as a Linux system admin mainly into Server builds, patch up gradation by using Satellite

• server, Firmware up gradation, Production issues resolving like performance and access issues.

• Experience in Installing, upgrading and configuring Red Hat Linux 5.x & 6 using Kick start Servers

• Resolved and provided the Root Cause Analysis (RCA) for the daily incidents like systems reboot, high load, connectivity issues and etc.,

• Automation of jobs through crontab and at.

• Working with LVMs (Creating physical volumes, volume groups and logical volumes).

• Managing users & groups and their access permissions, expiries, locking. Limiting and granting access to users and groups based on their profiles through sudo.

• Performing ACL’s on users and groups.Applying quota’s on different users. Analyzed and troubleshoots bottlenecks involving Memory, CPU, and Devices and Network using ps, vmstat, iostat, netstat, snoop, nfsstat commands and tuning the performance.

• OS / Patch upgrades with release patches by planning down time with end users.

• File system administration of Linux LVM.

• Monitoring of the disks, important processes or daemons, file systems utilization, server’s availability etc with scripts and by configuring monitoring tool.

• Configured and maintained NFS, servers.

• Provided customer support, help/troubleshoot users to resolve server, network, and other system wide problems.

• Worked with Service Now ticketing tool to track/prioritize issues on daily basis according to SLA

• (Service level agreement).

• Planning and implementing system upgrades including hardware, operating system and periodical

• patch upgrades.

• Provide resource utilization and status reports to management.

• Deployed, configured and maintained Splunk, Zabbix monitoring tools in multiple UNIX platforms.

• Good exposure in troubleshooting the user related problems on via chat, e-mail and remote support.

DECLARATION:

I hereby declare that all the information made above is true to the best of my knowledge. Date: ( Mallarapu Sudhakar)

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