linux system administrator Archives

Mounting with NFS and CIFS on Linux and Windows servers
Creating, installing, configuring and monitoring virtual machine (KVM)
Configuring Raid on Linux (hardware raid)
Taking Backups on Daily Basic with HP & DELL backups Software tool
Creation of Backups Policy as Per Customer on HP Data Protector
Installation of Backups Client & Server on the machine
Monitoring server with the help of HP OM monitoring tool.

Setting up Linux servers using virtualization technologies OpenVZ, KVM etc.
Understanding client requirements and configuring servers and create shell scripts for clients depending on their needs.
Deployment and support for applications in production servers and server management.
24×7 server monitoring using Nagios and manual monitoring via shell and server hardening.
Installing, configuring and managing webhosting servers and troubleshooting issues with different flavors of servers.
Configuring and managing backups and server migrations between Data Centers.
Fixing issues like spamming, phishing etc and provide server security.

24 x 7 Remote Production support.
The primary responsibility is to carry out day-to-day tasks of System Administration and Monitoring and resolving issues.
Installing, Maintaining and Updating RHEL and CentOS Servers.
Performing Schedule Jobs (At & Cron).
Experience in Web Hosting Platform.
Installing and Configuring Apache Web Server with Virtual Hosts Creation.
Installing and Maintaining Web Panels(WHM/CPanel ).

Password Management of Service accounts
Linux Patch Update. ·
Files sharing through SCP, WinSCP
Network configuration using bonding and bridging

Regularly Monitoring Filesytems space and capturing data from server CPU, Memory usage and System log files.
Writing automated scripts to handle routine user and sysadmin tasks.
Users Management and Support on LAMP and Git Env.
Experience in TWS (Tivoli Workload Scheduler) Operations/Scheduling/Administration(Beginner)

Over 3 years of strong experience as a LINUX/UNIX System Administrator and Production Support of various applications on Red Hat Linux and Windows environment
Assist with management of 100+ Linux server infrastructures (RHEL5, RHEL6 & RHEL7)
Kernel and network based systems tuning; Interface with project sponsoring groups to gather requirements and be responsible for implementation and post implementation project support
Day to day support of the production Infrastructure and Applications
Performed daily administrative tasks such as troubleshooting automation equipment and unit maintenance on multi-functional process systems, auxiliary devices, and peripheral equipment
Created logical volumes and increased the file system in Linux servers
Experienced in managing disk quotas and applying RHEL Hardening Standards

Depth Knowledge in Server monitoring as well (BMC patrol and portal)
User and group creation, deletion, modifications and granting sudo privileges to user
Vendor case logging with Redhat, Oracle, IBM, Lenovo etc. for hardware/OS related issues
Manage FTP/SFTP services- New SFTP setup, Configuration and Management.

Installation, Configuration & Troubleshooting of Red Hat Linux Server, Fedora OS,Ubuntu,Centos.
Sendmail client configuration and testing on servers
Coordinating with Security team for firewall port opening requests
IP Cutover on client requested servers

Developed solutions by analysing client needs and employing critical thinking.
Familiar with AWS concepts such as EC2, S3, RDS, Route53 etc.
Familiar with OpenVZ virtualization, Managed openvz containers.
Performed server migrations and restorations on cPanel servers.
Configured account and database backups.
Familiar with R1soft.
Created bash scripts and set up cron jobs that monitored security aspects of a server.

Responsible for the administration of Linux-based systems.
Implementing server provisioning, management, and monitoring systems including Zabbix, plan fault detection strategies.
Use automation tools like Ansible for configuration management.
Run software like Nginx, Tomcat, PHP, MySQL/MariaDB, Oracle, VMs, Java components and troubleshooting the issues.
Implement and config the new telecommunication components to integrate with each other and databases.
Set up ELK for SS7 packet logs to improve analytics speed.
Building and maintaining management tools written in scripting languages, especially Shell scripting.

Create proactive procedures to solve VistA system problems that we receive from different departments, analyze issues and design solutions such as:
Post-build validation for newly built servers before handover to production
Check Daily Full, incremental backup on Netbackup tool
Netbackup client configuration on RHEL servers (Ahsay , NBU)

Installation and configuration Linux OS such as Centos, Redhat, and Ubuntu servers.
Upgrade and configure system software that supports infrastructure applications or Asset.
Manage applications per project or operational needs.
Write automated tasks via shell script.
Monitor and manage Linux servers and being alert through Nagios monitoring system.
Install particular services such as FTP in the server.

Performing updates and handling customer tickets regarding technical issues
LVM creation, deletion, resizing
Scheduling jobs using cron and job scheduler
NAS share migration

Administering Linux (CentOS, Fedora, Ubuntu, Debian) machines and trouble shooting them.
Managing Virtual Private Servers and Provisioning them based on customer requirement.
Controlling the Internal and External firewalls across server clusters in different zones across different Data Centers.
Managing the installation of Virtualization platforms (OpenVZ, KVM, VMWare and LXC).

Install, configure and maintain Linux Machines and ensuring system up time.
Creating Users, Database and assigning permission to users by using Cpanel & Putty.
Share Printer across LAN.
Samba server for connectivity between Linux & Windows systems.
Perform troubleshooting analysis of workstations and associated systems.
Provide support for technical issues, networking, and internet related issues.

Installing and designing of new system.
Backup solution.
Updating files from remote server.
Managing Disk, Providing security assistance.
Debugging systems. Also updating the results to R&D.
Upgrading the system.
Controlling the process on priority.

Administration of Web Application Servers and performing tunings for better performance.
Performed OS, Network tunings on the Apache.
Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.
LDAP VIP migration

Managing Local Linux Users and Groups.
Controlling Access to Files with Linux File System Permissions.
Configuring and Securing Open Ssh Service.
Analyzing and Storing Logs.
Basics of SE linux permissions.

Provides technical input, solutions, and recommendations to deal pursuit. Engaged in and provides support for transition/transformation efforts. Troubleshoots VMware, ESX servers and UNIX/Linux servers remotely. Handling incidents, changes and service requests that is related to the Linux servers, also troubleshoots servers remotely as root. Can also handle incidents that are related to VMware/VSphere, ESX servers and Virtual Machines as well. Applies advanced subject matter knowledge to complex business issues and is regarded as a business matter expert. Frequently contributes to the development of new ideas and methods. Works on complex problems/projects where analysis of situations or data requires and in-depth evaluation of multiple factors.
Experience in configuring monitoring tools like Nagios.
Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
Setup and Configuration of Puppet Configuration Management.

NetBackup server and client software installation and configuration in all flavours of UNIX.
Initialize and configure Tape devices, Storage units, Volumes, Policies.
Performing backups and restores and manage its logs.
Customizing backup policies
NDMP Backup Configuration and maintenance
Administrate Data Movers and control stations.
Create snapshots and replications.

Involved in CISCO Netscalar Load balancer upgrade.
Writing Puppet Classes to install and configure Applications.
Perform File restore using CommVault and swap weekly tapes from tape library.
Experience in writing scripts to automate jobs and debugging scripts.

Develop PHP code for website development.
Installation, Configuration & Troubleshooting of Red Hat Linux Server, Fedora OS, Ubuntu, Centos.
Manage Client policies on MCafee EPO server and troubleshoot issues on it. Migrate MCafee EPO from 4.6 to 5.x.
Add and remove firewall rules in CISCO ASDM.

Troubleshooting CDN network related issues with clients ranging from personal domains to enterprise clients.
Troubleshooting and helping clients with setting up CDN on various Content Management Systems (WordPress, Magento, Joomla, Drupal)
Setting up various nginx configurations.
Troubleshooting issues related to DDOS on a large scale prevention service, mainly for enterprise clients
Troubleshooting Web Application Firewall service, and setting up configurations to defer scrapers and bots from web sites.
Cross communicating with other engineering teams and good understanding of clients needs in order to deliver a top-notch service

Install, configure and support Linux based OS and application.
Monitoring the Application running on UNIX platform
Scheduling jobs using CRONTAB.
Implemented REALMD with SSSD to configure domain join for all the new servers and automated this process in puppet.

Administering the existing IT systems and enhancing the system efficiency by monitoring the day-to-day system working and troubleshooting tasks on Linux Operating Systems as and when needed
Managing user accounts by using user`s management like adding, deleting and modifying
Monitoring Logical Volumes (LVM) and developing the file systems and also by assisting in the disk management
Operating the SWAP memory as per the requirements with good knowledge of RAID levels
Delivering security implementations as setuid, setgid, sticky bit, ACL’s and sudoers
Regulating packages by using RPM and YUM
Configuring Yum repositories to installing, removing and update/upgrade packages

Installed, configured, and maintained Linux and Windows Operating system.
Basic Knowledge of Package Installation using yum,rpm and apt-ge command.
Data center management and maintenance.
Check working status of all incoming networks.
Sending Checklists of working status of servers.
User & group Management on Ubuntu Desktops.
Check working status of all systems.

Server disk space management, periodically cleaning log files
Monitoring performance of the system using Nagios and HP Operation Manager.
Managing file systems in LVM (Create, delete and modify FS)
User account management, creation, deletion and assigning permission
Installation, configuration, implementation & maintenance of Windows & Linux servers
Installing and upgrading packages using yum and rpm
Patches and Packages management

End to End execution of the Data Center Infrastructure Projects.
Installation and configuration of Linux servers (RHEL 6 & 7).
Resource Management: CPU, Memory, Load average, I/O Management.
Software installations: RPM & YUM.
Physical Servers Dell, HP, Huawei, X-Series, Pure flex & IBM Blade center.
Disk/Memory Management: LVM, Swap & Raid.
Configure multipathing on servers and Scan New LUN’S

Manage physical and virtual servers in multiple locations remotely
Patching and vulnerability management for servers
Patching of physical servers with OS installed on SAN with powerpath and generation of new initramfs for the patched kernel
Rollback of patched OS in case of any issues on to clone OS LUN
Incident, change, Task and problem management via service now tool
Performance tuning of servers and troubleshooting of day to day user issues
LDAP client installation and configuration

Handling tickets regarding technical issues.
Server monitoring and administration.
Knowledge in WHM-cPanel, Plesk, Apache, PHP, MySQL
Monitoring email server and troubleshooting server issues.
Knowledge in OpenVZ, Solusvm and VPS administration.

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