SUMMARY

• Over 7+ years of experience as Linux Administration and Devops Engineering.
• Experienced in installing, upgrading, patching, configuring and administrating Linux OS with proper release management.
• Experienced in Performance Monitoring, Security, Trouble shooting, Backup, Disaster recovery, Maintenance and Support of Linux systems.
• Created and maintained user accounts, profiles, security, rights, disk space and process monitoring.
• Worked on Configuration Management such as Puppet and Ansible.
• Worked on version controls like GIT and SVN. Worked on Agile Methodologies.
• Have good hands on experience on some of the monitoring tools like Nagios, Splunk and Zabbix.
• Extensively written bash script for various tasks automation.
• Have good hands on experience working on Cloud platforms like VMWARE vCaC and Amazon Web Services.
• Expertise in VMWARE virtual environment.
• Have good experience on various Devops tools.
• Performed Remote system administration using Network protocol tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experienced in planning, documenting and supporting high availability, business persistence, fail - over, fail-back.
• Configured Networks using DNS, NIS, NFS, FTP and DHCP, troubleshooting network problems such as Sub netting, Routing, Firewall related on TCP/IP providing support for users in solving their problems.
• Experience in installing and configuring Kick start in Linux.
• Created and maintained large file systems with EMC SAN devices using VxVM on Sun Solaris.
• Resolving system errors and crashes, huge file sizes, file system full errors.
• Troubleshooting of NFS servers and NFS clients in auto mount Environment.
• Experience with Java Enterprise application servers such as Web Server and Apache.
• Problem determination and troubleshooting, Security using SSH and Shell Scripting.
• Exposure to couple of ticketing systems like Remedy, Service Now, Service Manager
• Working closely with other business units likedeployment, DBA, SAN Admin and Backup Admin etc. and other product vendors like EMC, IBM, Oracle.
• Performed all configuration changes to software and Patching, firmware upgrades to hardware with in the maintenance window with proper change management approvals.
• Excellent written and verbal communication skills, inter-personal skills and self-learning attitude.

TECHNICAL SKILLS

Operating System: Red Hat Enterprise Linux 7.x/6.x/5.x, CentOS, AIX

Virtual/Cloud Environment: VMware, KVM, AWS

Hardware: Dell PowerEdge, HP proliant, IBM Blade center HS-series/x-series, CISCO 6500 series Switches, EMC, NetApp SAN and NAS.

Network Protocols: TCP/IP, HTTP/HTTPS, Basic cable crimping, Ethernet, netstat, NFS, NIS.

Web/Application Server: Apache HTTP server 2.2/2.4, Apache Tomcat 6.0/7.0/8.0, WebSphere application server, JBOSS, WebLogic application server, LDAP Server and IIS.

Database: Oracle 9i, 10g, 11g, MySQL, MongoDB, Apache Cassandra, PostgreSQL.

Programming Languages: Shell, Python, HTML

PROFESSIONAL EXPERIENCE

Confidential, Overland Park, Kansas

Linux/Devops Engineer

Responsibilities:

• Plan, Design, and build infrastructure for different projects
• Servers Provisioning using Foreman, Satellite server and VMWARE cloud tool
• Experienced in hardware configuration of HP and Dell hardware and deployed RHEL 7.x/6.x/5.x using customized kickstart profiles via load tools such as Foreman, Satellite server
• Setup opensource puppet infrastructure in the environment for configuration management, application deployments, security compliance, automation
• Setup new repos and channels on satellite server
• Updating RHEL servers, applying security patches using satellite server
• Setup GIT versioning control system to maintain centralized code repos for various Fmanagement tools such as puppet, ansible,etc.
• Working with Ansible to run adhoc commands, writing playbooks for configuration management, software deployments, security setup
• Installed and configured Jenkins for Automating Deployments and providing a complete automation solution.
• Configuration of Docker containers and creating docker images
• Working with VPC, creating new instances and migrating existing servers to AWS for few application teams.
• Working with open source technologies such as CentOS, SpaceWalk in LAB environment
• Experience with F5 load balancer
• Servers monitoring and troubleshooting using command line utilies and GUI tools such as Splunk, Zabbix, Nagios, Cacti, Tealeaf
• Working on performance tuning: kernel parameters tuning, ulimits setting, Disk striping, LVM management
• Extensively writing shell scripts for automating tasks, monitoring, servers maintenanceetc.
• Experience with RAID configuration, multipath, LVM management, VM disk management, NFS, CIFS, NAS
• Strong knowledge on networking concepts such as DNS, VLANs, Subnets, firewall; experience working with network utilities such as tcpdump, ss, netstat, route, ip addr, Wireshark, experience working with different models of Network cards, switches
• Working with different application teams to install apache, tomcat, WebSphere application server(WAS), Database teams such as Oracle, DB2,postgresql.
• Experience working with servers in firewall, DMZ environments
• Working in a team which is escalation point to all OS related issues and participate in 24X7

Environment: RHEL 7/6/5, CentOS, Windows, VMware, Kickstart, satellite server, Foreman, AWS, puppet, GIT, Jenkins, Docker, F5 load balancer, VMWARE, HP and DELL hardware, BASH scripting, apache, tomcat, WebSphere, postgres, MySQL, oracle, DB2.

Confidential, Georgia, Atlanta

Linux Admin

Responsibilities:

• Installed, Configured Red Hat 5.X, 6.X Server on HP and Dell Hardware with help of Opsware.
• Management of Red Hat Linux user accounts, groups, directories and file permissions.
• Configured Power Path for SAN devices and Performed Disk management with the help of LVM (Logical Volume Manager).
• Installed and configuration Cacti on servers used for performance monitoring with the help of custom scripts.
• Configured event and filesystem monitoring tools Envision, Oracle CCC, Snare across the Linux farm.
• Written custom shell scripts and build custom RPM packages to add in post tasks when building new servers.
• Troubleshoot virtual tape drives with mt, tar commands.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers and also logged to cacti monitoring tool for graphical view.
• Pushed RPM’s across the Linux farm with the help of BigFix and Rebuild corrupted RPM and LDAP database.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on Red HatLinux servers.
• Limited user access and limits with specified sudo rules and limits for generic application accounts.
• Installed, Configured and managed ESX VM’s guests with virtual center and VI client.
• Intensely worked with backup team to configure DataProtector on client servers and cell manager servers.
• Configured RHEL client servers to point satellite server for quarterly patching.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm for WebSphere application servers.
• Worked intensely on post build process for this project.
• Configured version control server (CVS) and Password-less setup for SSH login using ssh-keygen tool.
• Configured raw devices for DB2, installed and configured Oracle RAC on Red Hat servers.
• Installed, configured HP OpenView and Tivoli monitoring tool for enterprise monitoring.
• Managed builds and Deployments, Created Ant Scripts to customize EAR, WAR and JAR files and the application is deployed on WebSphere server.
• Build the AIX VIOs and LPAR on the SAN disks without using the internal disks
• Installation and configuration of AIX Dual VIOs Server (Version 1.5.2.1) on new POWEER 6 (p570) System.
• Worked with Remedy tool for resolving helpdesk tickets and Service-Now tools for Change tickets with defined SLA’s.
• Configured Dell DRAC and HP ILO for remote management.
• Provided system performance reporting on a regular basis along with keeping all software at current version levels, and maintaining a log of changes for tracking
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on Red Hat Linux.

Environment: HP DL580-DL380 G3,G4,G5 Dell PowerEdge, IBM blade servers, WebSphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas NetBackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows 2003/NT.

Confidential

UNIX / Linux System Administrator

Responsibilities:

• Plan, design, Implementing, Installation and configuration Operating System upgrade on Red Hat Enterprise Linux 4.0.
• Red hat Linux Kickstart Installation.
• Written UNIX Shell scripts for monitoring & clean up old files.
• Creating and deleting and managing user accounts and managing user quotas on the Network.
• Configuring DNS, DHCP, NIS, NFS in Red Hat Linux 4.0& other Network Services, Linux kernel, memory upgrades and swaps area.
• Administration/Configuration of Print Servers/Clients in the Network, planning, configuration and maintenance of connectivity for servers as well TCP/IP configuration.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop'.
• Experience in Developing KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Installation of web logic, upgraded to service pack updates, installed. BEA patches, configuring and creation new domain, start and stop web logic server.
• Production support of Apache, Apache HTTPD, Tomcat including installation, configuration, management and troubleshooting.
• Configure and maintain Windows 2000 Server that runs DNS, DHCP and active directory services.
• Formatted raw disks & partitioned them using the fdisk utility. Created file system using newfsand mounted it.
• Utilized Linux Terminal Server for removing fat client management, save on administration Provide users with a more reliable & secure environment.
• Implementation of numerous VMware ESX virtual machines (2.5.x and 3.0).
• Created high availability iSCSI SAN optimized for VMware server virtualization environments.
• Installation and configuration of MySQL on Red Hat Linux cluster nodes.
• Worked in configuring and setup connectivity between web servers, database servers and directory servers as a process server administrator.
• Experience in backup reporting and managing of EMC Legato Network Environments.

Environment: Red Hat Enterprise Linux, Shell scripting, Python, WebLogicserver, MySQL, Apache, Apache HTTPD, Tomcat, VMware, EMC Legato.

Confidential

UNIX / Linux System Administrator

Responsibilities:

• Installing, tuning, troubleshooting and patching of Red Hat Enterprise Linux servers.
• Scheduled various regular, periodic, future and queue tasks by using crontab.
• NFS management - take care of user accounts/groups, setting up of NFS environment.
• Transferring files from one system to other using FTP and SFTP.
• Monitoring server performance and troubleshooting server related problems to SNMP.
• Processes administration and management like monitoring, start/stop/kill various processes/sub processes.
• Monitor system performance parameters using iostat, vmstat, and fine-tuning.
• Systems administration, maintenance, and monitoring various day-to-day operations.
• Creating and maintaining user accounts, profiles, and security rights.
• Installation/upgrade, system startup, and system shutdown as needed.
• Installation and configuration of WebLogic and WebSphere application server.
• Installation, configuration, and maintenance of web servers, application servers, and database servers on Linux Servers.
• Wrote simple bash scripts to ping the servers and add users to the boxes.
• Resolved system errors and crashes, disk space problems, huge file sizes, and file system full errors.
• Documented various regular administrative tasks and backup procedures.

Environment: Red Hat Enterprise Linux, Apache, WebLogic, WebSphere, Shell Scripting