SUMMARY

• 7 years of professional experience in Linux/Unix Administration.
• Experienced in Installation, Configuration, Upgradation, Support & Maintenance of Redhat Enterprise Linux, CentOS, HP - UX, AIX and Sun Solaris servers.
• Experienced in Kernel upgradation and degradation in all linux flavours.
• Worked on Configuring SFTP, Samba and NFS Server configurations.
• Experienced with Syslog Server for generating logs of all devices in the Network.
• Experienced in LDAP configuration in Linux.
• Worked on mounting and unmounting servers in Data centers during initial setups.
• Experieced in Firewall ( Iptables) Configuration.
• Experience in administering Nagios, Puppet, Jenkins
• Experienced in scripting Bash, Perl, KSH, Shell and python.
• Experience with DHCP Server for Automatic IP assignment.
• Experienced in Subversion edge Server configuration (SVN).
• Performed system back-ups and security updates on regular basis. knowledge on configuring Apache Server, MySQL Database servers, Tomcat/Java Servers and Lighttpd - LAMP- to host Webpages.
• Expert in security mechanisms- SSL, RSA authentication
• Knowledge on DevOps principles and software configuration Management.
• Worked on DNS and Mail Servers.
• Worked on Cronjob sechduling and bash scripting.
• Skills on configuring SQUID proxy Server and haproxy.
• Good knowledge on VNC Server and OpenSSH server.
• Good knowledge on NTP Server and client configuration.
• Excellent knowledge on LVM configuration.
• Knowledge in Redhat, Ubuntu, CentOS and Suse server administrations.
• Experience in VMWare.
• Good knowledge on cloud technologies.
• Good knowledge on SQL and PLSQL concepts.
• Experience providing 24x7 ONCALL support for mission-critical environments.
• Self-motivated, able to set effective priorities to achieve immediate and long-term goals and meet operational deadlines. Able to work independently and as team member.
• Implemented ITIL best practices- Incident Management and Release Management
• ISMS implementation team member: Server Audits and remediation expert

TECHNICAL SKILLS

Operating Systems: RHEL 5/6, CentOs, IBM AIX, Ubuntu Server.

Security: IPTables, APF, CSF, SSH and SSL

Network Applications: Configuration/Setup of Squid Proxy Server, Linux Firewall, DNS, DHCP, NTP, LDAP, NIS, SFTP/FTP, NFS, Samba, VNC server, Apache, SendMail, KVM.

Network and Server Monitoring Tools: Nagios, Centreon and Groundwork

Databases: MySQL and PostgreSQL

Mail Servers: SMTP, POP, IMAP, Exim and Qmail

Virtualization: VMware VSphere, Virtuozzo

PROFESSIONAL EXPERIENCE

Confidential, Newark-CA

Automation Engineer

Responsibilities:

• Provisioning of Linux and Windows Virtual Machines
• Assigning LUNs to the virtual machines and configuring it in the server
• Deprovisioning the Virtual Machines
• Regular patching of all windows machines and Linux (OEL) machines
• Managing Virtual Machines through VCenter
• User Management - LDAP
• Puppet administration
• Administration of Application servers running Java related Applications and database servers running MySQL/Oracle.
• Exposure to EMC storage HP Blade 7000

Confidential

LINUX Server Support Engineer /Incident & Release Manager

Responsibilities:

• Performance Management & Tuning of RHEL.
• Implemented and configured Backup policies and Storage Units.
• Experience working in Cpanel, WHM and Parallel Plesk.
• Installed and Configured Apache, MySQL, Exim mail server and investigated the configuration changes in the production environment.
• Perform server migrations and mitigating migration issues.
• Server hardening techniques and worked on hack issues
• Exposure to Cloud Virtualization technologies
• ITIL Best PracticesTuning the kernel parameters based on the application/database requirement.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check the CPU utilization, bottlenecks of I/O devices,, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to the remote system using sudo, putty, and telnet. Transfer files across the systems on the network used ftp, scp, and rsync commands.
• Managed various security benchmark as per the company rules and policies.
• AWS Cloud infrastructure experience.
• Server Configurations such as SFTP Server, Samba, NFS.
• Configuring Syslog Server to generate Centrally and monitor the logs globally.
• Created Bash shell scripts to monitor system resources and system maintenance and Performed administrative tasks such as System start-up/shutdown, and Backup strategy and scheduled cron jobs for job automation.
• Configured and troubleshootedTCP/IP network services.
• Configuring Send Mail Server/POSTFIX Server for Mailing
• Installing and updating rpm packages by configuring the Yum Server.
• SubVersion Server for revision of files and directories Centrally.
• TCP/IP Configuration like assigning IP addresses, configuring network interfaces, assigning static routes, hostnames etc.
• Interacting with customers to define requirements, develop and deliver solutions
• Transferring the sites across various datacenters.

Environment: Redhat Enterprise Linux 6, CentOS6, Apache, MySQL, Exim, Shell Scripting, LDAP

Confidential

UNIX System Admin

Responsibilities:

• Installation and configuration of the Operating Systems Red Hat Linux 4.0, RHEL5 and IBM AIX.
• Veritas File system and Veritas Volume Manager are used to configure the RAID Storage Systems
• Implemented NIS and NFS for administrative and project requirements.
• Building Linux, AIX and Solaris physical and virtual servers
• Discovering and Adding SAN Luns to Linux, AIX and Solaris servers.
• Adding and removing SAN Luns to Oracle ASM
• Managing various filesystems Linux LVM, AIX LVM, Solaris VXVM, zfs and GPFS
• Configured and troubleshooted TCP/IP network services
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup.
• Networking Configuration and NIC bonding in linux
• Created Shell scripts using (bash/Perl) and using text processing tools like (Grep/Sed/Awk) to ease administration tasks by automating the tasks
• Linux server health check performance monitor that is memory load ps and io wait check
• Cronjob sechduling and basic bash scripting.
• Fault handling and escalation.
• Servers build and installs, application upgrades, network equipment build and installation.
• Experience in Oracle RAC clustering and creation and deletion of ASM disks in Oracle RAC
• Creating ISCSI targets and mounting the iscsi devices in client machine.
• DevOps and automation tools such as puppet and chef

Environment: Redhat Enterprise Linux 6, Solaris, HP-UX, IBM AIX, Shell Scripting.

Confidential

UNIX/LINUX System Admin

Responsibilities:

• Configuring Virtualization for creating VMs using VMware.
• Design and creation of web- Apache/Lighttpd, application- tomcat/jboss and database-MySQL servers.
• Deployment of web and application servers and restarting tomcat servers.
• Log analysis for troubleshooting errors.
• Database administration and MySQL and Postgresql query execution.
• Worked on MySQL Replication.
• Handled Incident Management, Release Management & Root Cause Analysis.
• Scheduled Application releases in dev, tqa, stg and prod environment.
• Maintaining the time synchronization across the network by configuring the Centralized NTP Server.
• Configuring Squid Proxy Server and haproxy.
• Securing Private Network from Public by configuring Firewall.
• Centralized Authentication by configuring LDAP Server.
• Configured and troubleshootedTCP/IP network services.
• BMC BladeLogic Server Automation
• VNC Server for remote access graphically and OpenSSH Server Configuration for secure shell access.
• Installing and updating rpm packages by configuring the Yum Server.
• SubVersion Server for revision of files and directories Centrally.
• Good at handling Unix file systems ( Linux) using VxVM and Native LVM.
• Configuration of nagios server and adding hosts.
• Server Hardening and Server Performance tuning.
• Responsible to solve technical Problems related System administration (Linux of Our Clients).
• Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Maintain 99.98% uptime of LINUX production servers and follow proper escalation.
• Regularly manage backup process for Server and Client data.
• Configured Puppet server and chef as part of deployment automation.
• Handled server migration to a different datacentre.

Environment: Redhat Linux 5, Suse Enterprise Linux, HP-UX, VmWare, Apache, Tomcat, MySQL, Puppet, Chef, LDAP, Centreon

Confidential

LINUX Admin / NOC Engineer

Responsibilities:

• Experience working in Cpanel, WHM, directadmin and Parallel Plesk.
• Managed website, mailbox, mailing list creation, troubleshooting errors on site
• Managed third party applications like fantastico, rvskin, ROR, Imagemagick.
• Managed Apache web server, Exim, Qmail mail servers and MySQL database server.
• Setup, manage and recover file systems.
• Perform system backup and recovery operations.
• Experienced in scheduling jobs using crontab and at.
• Experienced in troubleshooting and resolving network issues related to the servers.
• Configure network interfaces and services.
• Set up and manage virtual file systems, swap space, core dumps and configuring system messaging.
• Managed migration of cPanel, Plesk, DA and control panel less servers.
• Managing system performance, Network Connectivity Administration.
• Managing File access problems, Remote file system administration, Logical Volume Administration.
• Experience in writing bash scripts for job automation.
• Documenting the installation of third-party softwares.
• DNS, NFS, NIS administration.
• MySQL database server installation, configuration and administration.

Environment: CentOS, cPanel, WHM, Plesk, DirectAdmin, Apache, MySQL