Mohmadirfan sheikh

Linux/System Administrator

adlcnx@r.postjobfree.com

Ph no: 510-***-****

A responsible Professional with 5+ years of experience in System Administartor, primarily focused on Redhat Linux (4.x.5, x 6.x, 7.x)/Ubuntu 12.04,14.04,And 16.04 VMware VSphere ESX/ESXi 4.x, 5.x, 6.x environment, Websphere/ JBoss/ Tomcat/ Apache Administrator/Deployment coordinator, Netbackup, SAN Storage (Netapp, EMC), HP Hardware, Veritas Volume Manager.

Education

Bachelor’s in Electronics Engineering From Maharaja SayajiRao University Of Baroda,India.

PROFESSIONAL EXPERIENCE

SAP,Palo Alto,California

Systems Administrator

Oct 2019– Present

Building Physical as well as Virtual (VMware) Servers.

Verification of the built servers.

Worked extensively with Network File System (NFS) for storage.

Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.

Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.

Software package and patch administration, involving adding and removing software packages and updating patches

Handling problems or requirements as per the ticket (Request Tracker) created.

Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.

Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running Solaris, Linux, Windows.

Integrated the Linux environment with Active Directory providing a Single Sign On (SSO) solution.

Setup and configure two Azure AD Connect servers for synchronization.

Deployed Redhat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.

RPM and YUM package installations, patch and other server management.

Installed RPM's on SUSE RHEL server using repository and Redhat satellite servers.

Installing, configuring and updating SUSE Redhat Linux systems.

Experience migrating SuSE Linux to newer version of the operating system.

Clustering solutions for High Availability using tools such as Veritas Cluster Server VCS, MSCS, RHCS

involved and set up migration for UNIX/Linux server and SAN storage between data centers and also application migration and testing. This included SAN/Application migration and testing various functionalities of key applications.

Running EMC grabs and HEAT reports for preparing document for migration.

Performed automated installations of Operating System using Kickstart for Linux Servers.

Strong scripting knowledge to perform different administration tasks.

Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.

Responsible for Active directory, GPO, Domain users, Administrating users and groups and given appropriate permissions and privilege to access our LAN and Domain environment.

Worked on User administration setup, maintaining account, Monitor system performance.

Environment, Command line, Current working directory, root directory, executed command.

Extensive user and group management through admin tool.

Managed windows Server 2008,2012 and windows server 2016.

witching production to virtual from bare metal, decommission and shutdown legacy physical servers.

Worked on Acronis Agent Installation, backing up the Physical Server, deploying the New VM on KVM hypervisor.

Worked on Recovery from failed restore, post deployment VM Setup.

Worked on MySQL Migration Level, Created MySQL Master Replication Detail Plan, MySQL Slave s Replication Detail Plan.

Created scripts to automate daily tasks like creating LAMP stack VPS's, chrooted sftp, ZFS backup scripts, VPS load testing, SSL installations, ecommerce search engine index replication, apache-solr setup, Mysql replication.

Monitoring and service issue resolution of LAMP stack web servers, both shared and VPS.

Participated migration cutover meeting's, Build and deploy Linux hardware Nodes to host several KVM templates.

Installation of RSCD Agents and registration of remote serves in BMC BladeLogic Server Automation suite using RSCD Bulk Agent Installer.

Applying latest patches released by BMC Software for RSCD Agents on remote servers on a regular basis.

Developing BL packages and Software packages for RedHat, SuSE, AIX Windows OS.

Created BL packages for automating EMC grabs.

Experience in HANA system installation and migration.

Creating Jenkins Pipelines with Jenkins Scripted File. Triggering the Remote Jenkins Jobs.

Worked as Admin on JIRA tool. Customized the dashboard based on team's requirement.

Added users, implemented Security and added new projects on JIRA.

Extensive experience in Application Deployments and Environment configuration using Chef, Puppet, Ansible.

Responsible for build and deployment automation using VM Ware ESX, Docker containers and Hudson.

Experience in managing source control repositories like GIT by creating new Repositories and creating user level credentials.

Citrix

Santa Clara, CA

Systems Administrator (Linux, VMware)

Feb 2016–Sep 2019

Installation, Maintenance, Administration and troubleshooting of Linux (Red Hat/CentOS 5/6/7)

As a Linux administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third-party tools, securing of OS, installing, configuring &job scheduling using cron.

Monitored and administered Servers for day-to-day problems, patches, user administration, hardware failure, monitoring log files, backup, software patching, configuration changes and documentation.

Installed, upgraded, patched and configured Linux servers using Jumpstart and Redhat Enterprise Linux 5/6 using Kickstart

Installation, setup and configuration of physical Standby Database using Active Data Guard.

Created RAC Database on Test Hosts refreshed them with the latest snapshot of data from Prod

Configured and Administration of VERITAS Cluster.

Created disk groups, volumes, volume groups and RAIDs using VERITAS Volume Manager.

Experienced in configuration & maintaining Veritas Cluster server, NetBackup.

Configures DNS, NFS, FTP, remote access, and security management.

Creates Linux Virtual Machines using VMware Virtual Center.

Installs, upgrades and manages packages via RPM and YUM package management

Installs Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.

Installs, configures and supports Apache on Linux production servers.

Experienced in scheduling jobs using crontab. DevOps experience with Chef, Puppet, Ansible, Dockers, Vagrant, and Jenkins AWS.

Manages Patches configuration, version control, service pack and reviews connectivity issues regarding security problem.

Manages systems routine backup, scheduling jobs and enabling cron jobs.

Performed daily system monitoring and troubleshooting functions on servers

Controlled and managed disk space via LVM. Created and managed User Accounts and Permissions on Linux servers

Utilized Nessus software to run vulnerability scans on TCP & UDP Ports to ensure system security

Remote system administration via tools like SSH and Telnet. Extensive use of Crontab for job automation.

Responsible for creating and managing user accounts, security, rights, disk space and process monitoring in Solaris, CentOS and Redhat Linux. Experience in Redhat Cluster Suite and Global Filesystem, Redhat Network Satellite Server.

Configured and Administration of VERITAS Cluster.

Created disk groups, volumes, volume groups and RAIDs using VERITAS Volume Manager.

Experienced in configuration & maintaining Veritas Cluster server, NetBackup.

Configures DNS, NFS, FTP, remote access, and security management.

Creates Linux Virtual Machines using VMware Virtual Center.

Installs, upgrades and manages packages via RPM and YUM package management

Installs Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.

Installs, configures and supports Apache on Linux production servers.

Manages Patches configuration, version control, service pack and reviews connectivity issues regarding security problem.

Manages systems routine backup, scheduling jobs and enabling cron jobs.

Performed daily system monitoring and troubleshooting functions on servers

Controlled and managed disk space via LVM. Worked with Storage arrays such as EMC(VNX, VMAX, XtremeIO), Netapp.

Created and managed User Accounts and Permissions on Linux servers

Utilized Nessus software to run vulnerability scans on TCP & UDP Ports to ensure system security

Remote system administration via tools like SSH and Telnet.

Used Ansible, puppet and chef for automation.

Designing Firewall rules for new servers to enable communication with application.

Setup DEV/TEST/UAT/QA environments from Production database using Snap mirror and RMAN.

Installed and configured services like DHCP, NFS, DNS, Apache Web Server, NIS, LDAP, FTP/SFTP, SMTP, Telnet, RPM Package Management, File System Management.

Worked extensively with Vendors Sun, NetApp, and HP for troubleshooting the issues and in replacing the failed Hardware.

Shell scripting for jenkins automation, Jenkins and System, Network monitoring.

Root cause analysis of performance/Production environments problems & Involved in scalability and capacity planning, support and maintenance of Performance and production systems.

Duties included Installation, configuration, administration, troubleshooting and maintenance of VMware virtual infrastructure platforms.

Job includes installation and configuration of VMware ESXi 5.1, 5.5 installation and configuration of VMware Virtual Center Server and creating Virtual Machines.

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