SUMMARY:

• Around 10 years of strong experience which includes installation, configuration and maintenance of physical and virtual server infrastructure across multiple distributions of Linux and windows with creative ability to deliver solutions for business growth, organizational development and optimization.
• Experience in Administration of production, development and test environments on RHEL 5/6/7, Fedora, OEL (Oracle Enterprise Linux), CentOS, Ubuntu and occasional windows servers.
• Expertise in Amazon AWS cloud which includes services like: EC2, S3, VPC, ELB, IAM, Cloud Formation, Cloud Watch, Security Groups.
• Extensive knowledge of VPC architecture, EC2 formation, IAM management, S3, Cloud Watch, Elastic IPs and managing security groups on AWS. Effective combination of system, Backup and Restore, storage Administration. Automating, configuring and deploying instances on AWS cloud environment.
• Experience in managing AWS S3 and EBS storage services and Hands on experience on Launching Instances.
• Experienced in configuring and managing OpenStack cloud platform.
• Experience in creating Flavors, Projects, Networks, Routers, Storages on Red Hat OpenStack platform
• Experienced with various OpenStack services configuration like Horizon Dashboard, Nova Compute, Cinder Block Storage, Swift Object Storage, Keystone Identity Service, Glance Image Service, Neutron Networking
• Strong experience working with various Development & Test teams in an Enterprise level environment.
• Performing kickstart to build and automate Linux installation. Package Management using RPM and YUM
• Network configuration, hostnames, netmask and route details, NFS, DNS, DHCP, FTP, LDAP and Samba, Apache/ Tomcat server’s configuration.
• Experienced in managing various file systems using LVM and SVM and also configured filesystems through network using NFS, NAS methodologies and configuration of RAID devices.
• Working experience of server monitoring using tools like Nagios, Zabbix, Veeam One Monitor and Cacti.
• Expert in handling day - to-day administration tasks like adding, deleting and modifying users, managing permissions, special permissions like SUID, SGID and StickyBit
• Performance tuning of Linux servers, kernel parameter, identifying process that hog the system resources
• Responsible for Backup and DisasterRecovery operations of various servers using backup solutions.
• Responsible for OS maintenance activities like upgrading OS, updating the services and third party software.
• Worked on maintaining integrity of Linux servers, TCP/IP, UDP protocols in solving network issues.
• Experienced in working in High-performance Computing Environment over Linux clusters.
• NIC bonding configuration in Linux and UNIX systems to increase the bandwidth or redundancy
• Experienced in documenting various maintenance activities, upgrades, changes in the network architecture.
• Automating configuration management using Puppet. Installed puppet enterprise 3.x
• Experience in working with Virtualization Technologies like Linux KVM, VMware ESXi, Microsoft Hyper-V in building and configuring Linux, Centos, Windows, Solaris servers as a part of cost effective solutions.
• Experience in Implementation, Configuration of Virtualization infrastructure using RHEV-H and RHEV-M, Configuring Live Migration and High Availability, import/export of VMs
• Converting VMs from foreign hypervisors like VMware, Hyper-V to KVM, RHEV using virt-v2v tool, virt-p2v
• Creating and managing Datacenter, Cluster, Remote Storages, Virtual Servers, Snapshots, Templates, Pools, Users, roles and Reports

TECHNICAL SKILLS:

Operating systems: Red Hat Enterprise Linux (RHEL 4.x/5.x/6.x/7.x), Fedora, CentOS (4/5/6), ClearOS(4/5) IBM AIX, Solaris, Windows XP/ 2000/2003/2008

Server hardware: HP Blade system(HPBL685c), HP ProLiantG2, IBM Blade Center, IBM Blade HS22/HS23, Fujitsu Blade Servers, IBM X3650 servers

Storage hardware: HP EVA 6100, HP HSV300, IBM Blade Center S Internal Storage, Open Filer, iSCSI/ FC Storage arrays, RAID Storage arrays

Virtualization: Redhat KVM, VMware vSphere ESXi, Microsoft Hyper-V

Cluster Solutions: Red hat Cluster Suite, IBM HACMP, Microsoft Cluster Service

Cloud Platform: Amazon Web Services(AWS), OpenStack

Scripting language: Bash shell

Networking Services: NIS, NFS, Auto FS, DNS, FTP, Squid, SAMBA, DHCP, SSH and Send mail.

Ticketing tools: JIRA, HP Service Manager, Service Now

PROFESSIONAL EXPERIENCE:

Confidential, Moline, IL

Infrastructure Analyst

Responsibilities:

• Installation, Configuration & administration of RedHat 5/6/7, Centos, Oracle Linux, windows systems.
• Provide day-to-day administration, support and maintenance for multiple teams
• Working on various AWS services like EC2, Auto Scaling, S3 Storage, EBS Storage, Customized AIM, Public and Elastic IP Address, Creating VPC, route 53, load balancer-ELB, Cloud formation templates, Security groups, RDS
• Build servers using AWS, importing volumes, launching EC2, RDS, creating security groups, auto-scaling, load balancers (ELB), in the defined virtual private connection.
• Deployment and management through AWS cloud formation on EC2 instances and maintaining Amazon S3
• Created Amazon Machine Images (AMI) and maintained with latest patches
• Worked on cloud watch to collect and track metrics, collect and monitor log files, set alarms
• Proficient in using all Amazon web services like EC2, EBS, IAM, S3, ELB, RDS, VPC, ROUTE 53, Cloud Watch, Cloud Formation Templates, Auto Scaling groups.
• Created AWS Cloud Formation templates to create custom-sized VPC, subnets, EC2 instances, ELB, security groups. Worked on tagging standard for proper identification and ownership of EC2 instances.
• Managing AWS template code using GitHub and automating environments through Jenkins.
• Assigning and Managing public and Elastic IP address to AWS hosted instances
• Install software on Instances (Windows, Linux) as per user's request
• Performing Incident management related to Linux. Incident trending and Proactive problem management.
• Managing daily operations on Linux platforms. Monitor resource utilization, including such items as CPU, memory, swap and disk utilization. Report on system utilization and plan/implement recommended maintenance as required. Perform impact analysis as appropriate
• Evaluate, apply, test and promote patches for the Linux operating system, Participate in the development of patching procedure recommendations for operating systems
• Performing root cause analysis and implement remediation plan.
• Worked on developing basic shell scripts using bash shells to automate day to day administrative tasks.
• Ensure process for monitoring, backup, recovery, security, change management established and documented
• Managing and supporting various applications from Linux prospective
• Interacting with various vendors and clients and Assist in recommendations for disaster recovery
• Working on various Linux based applications/tools, Migration of applications to new virtual servers.
• Managing virtual and cloud base appliances
• Monitoring and managing storage, network, performance for physical and virtual servers using Zabbix tool
• Disk space / partitions management, expanding using LVM (vgcreate, lvcreate, lvextend etc)
• Mounting network filesystem, managing samba shares and ftp servers
• Installing and updating packages using RPM and Yum repository.
• Configuring and Managing log rotations for various tools using logrotate utility
• Managing webservers like apache/http/tomcat for applications

Confidential, The Woodlands, TX

Linux/Virtualization/Cloud Administrator

Responsibilities:

• Installation, Configuration & administration of Redhat 6/7, Centos, Oracle Linux, windows operating systems.
• Daily systems administration, resolving systems issues, supporting different groups/apps.
• Worked on installation, configuration and administration of Redhat Cluster Suite and Oracle RAC.
• Network configuration for host names, netmaks and routes details, NFS, DNS, DHCP, FTP, LDAP and Samba, Apache servers.
• Installed, deployed and configured Redhat KVM virtualized infrastructure
• Configured and managed various AWS services like EC2, S3 Storage, EBS Storage, Customized AIM, Public and Elastic IP Address, Creating VPC, route 53
• Created Snapshots of volumes and volumes back from Snapshots
• Assigning and Managing public and Elastic IP address to AWS hosted instances
• Implantation of private cloud infrastructure using OpenStack. Creating Instances on Cloud
• Creating and Managing flavors, block storage, networks, routers, users, roles on Cloud
• Creating virtual machines for various applications, Deployed puppet for automated system configurations
• Managed datacenter, cluster, storage, vm pools, templates and snapshots, vm migration
• Multipath configuration on SAN devices/disks on Linux to keep the disks names persistent after reboot
• Performed Memory and Swap management to improve optimization and performance of the servers.
• Experienced in User and Group administration and security issues, sudo permissions.
• Responsible for scheduling cron jobs such as for Backup, System Monitoring and removal of unnecessary files.
• Performed upgrades of Packages and Patches in Linux, Installing packages using RPM and YUM
• Adding/expanding new storage to existing/new systems using LVM
• Configuring and scheduling backups on servers and managing system backups using rsync, cp, tar
• Configured and maintained System Security using IPTABLES and TCPWRAPPERS in LINUX
• Troubleshooting network, application and server related issues, writing Shell Scripts for automation
• Providing day-to-day user administration like adding/deleting users and managing user queries.
• Installing, Configuring ESXi Hosts and adding to the Clusters in vCeneter.
• VMware installation, configuration and monitored with virtual environments with ESX 5x and VCenter
• Deploying, Managing the Virtual Machines and Templates, Performing Snapshots, Cloning, Migrations etc
• Physical to Virtual (P2V) / Virtual to Virtual (V2V) migration using VMware Converter.
• Reconfiguring Virtual Machines as per customer requirements, Extend Hard disk, increasing the RAM, adding CPU, add new Hard disk and adding NIC card.
• Creating SNAPSHOTs and restoring them based on Application Team requirements.
• Installing and configuring Veeam backup solution for VM backups. Creating Backup Policies.
• Monitoring server performance, network and Storage devices using monitoring tools like Nagios, Cacti
• Timely acknowledging and resolving the Incidents and provided on-call support on as need basis.

Confidential

Sr. System Administrator

Responsibilities:

• Installation, Configuration, Maintenance and Development of about 250+ Linux Servers (Mix of Ubuntu, CentOS and Red Hat-RHEL and Windows).
• Providing support for Data centre and Disaster recovery activities
• Actively participate in the migrations of V2V, P2P servers and migrating virtual servers in new data centre
• Experience in Installing and configuring Redhat Linux 5.x/6.x servers for deploying applications
• Strong Administrative skills in UNIX Operating System (Redhat Linux, IBM AIX), Veritas Volume Manager, TCP/IP, NFS, DNS, NIS, Automounter, RAID, Mail Services, kickstart etc
• Troubleshooting and Administering High Availability using Redhat Cluster, VERITAS Cluster server on various business critical database and application production servers
• Administration of RHEL 5/6, Centos, Windows, IBM AIX which includes installation, configuration, testing on both physical and virtual machines.
• Managed Cloud infrastructure running RHEL/CentOS on AWS, AWS POC responsible for creating and managing VPC, AIM users, EC2 instances, EBS, S3 and security groups.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 5.0. and vCenter
• Responsible for creating and managing user accounts, security, rights, disk space and process monitoring in Solaris, CentOS 5.x/6.x and Red Hat Linux.
• Writing scripts for day to day administration using bash shell.
• Installing, upgrading and managing packages via RPM and YUM package management
• Created and maintained users, profiles, security, rights, disk space and process monitoring on Linux servers.
• Managing systems routine backup, scheduling jobs and enabling Cron jobs.
• Administered VMware Infrastructure Client 3.5 and V-Sphere 4.x. & 5.x
• Working with Database administrators to tune kernel for Oracle installations.
• Experienced in monitoring and debug performance issues on different OS Linux (RHEL & Centos),
• Systems log management, Data backup and restoration with UNIX native tools (tar).
• Installed and maintain puppet-based configuration management system, configure and managing LVM on Linux using tools like lv extend, lv create, resize2fs etc.
• Scanning the newly assigned LUNs and assigning to volumegroup and increasing the file system in Linux
• Worked on FTP servers for sending and receiving files between local and remote servers.
• Monitored system performance using SAR, VMSTAT, IOSTAT, NETSTAT, NAGIOS, Veeam Monitoring tools
• Working with the Native Multipathing for the high availability installation / configuration on Red Hat clusters.
• Providing 24*7 on-call support on rotation basis

Confidential

System Administrator

Responsibilities:

• Building and supporting RHEL and Centos servers for database configuration
• Installing and configuring Linux OS using kickstart method and package managing using RPM and YUM
• Written Shell scripts using BASH for process automation of databases, applications, backup and scheduling.
• Installed, monitor and supported Web and Application Servers on Linux environments;
• Created and maintained users, profiles, security, rights, disk space and process monitoring on Linux servers.
• Experience in configuring, performance tuning and troubleshooting Linux Servers.
• Experienced in Log monitoring and log server configuration using rsyslogd. Maintaining logs using log rotate
• Worked and performed data-center operations including rack mounting, cabling.
• Managing file system usage, disk usage using LVM, system performance by tuning kernel parameters
• Worked with MySQL database installations and configurations.
• Deployments of Web application servers on clustered environments.
• Experience in installation, monitoring, supporting and configuring of apache web servers.
• Implemented CRON jobs, Bash for administering & automatic jobs.
• Experience in working in all environments (Prod, Dev, Test, DC and DR).
• Monitoring the hosts, networks, file systems, using Nagios, top and ps tools.
• Implemented, configured and monitoring Active-Passive Cluster suite using HACMP on IBM PowerOS
• Installing and configuring High available Power Linux Servers for Oracle database and Applications.
• Configuring the Failover and Failback Policy using HACMP.
• Performed routine and preventative maintenance on servers and timely apply security patches as mandated
• Participated in on-call rotation to provide 24X7 support for datacenter and disaster recovery site activities

Confidential

System Administrator

Responsibilities:

• Responsible for installing and configuring Red Hat Linux 5.x and Windows 2000 servers.
• Created new File systems and Logical Volumes, performed file system management and troubleshooting.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions
• Installing and updating packages using RPM and YUM.
• Configuration and installation of DHCP, DNS, web (Apache), mail (SMTP, IMAP, POP3) and file servers on Linux
• Collaborate on monitoring and troubleshooting Servers using various third party monitoring tools like Nagios.
• Managed users, disks, groups administration, File Sharing Permissions, backup and restore and networking
• Installing Red-hat Linux using Kick-start and applying security policies for hardening the server.
• Configuration and maintenance of NFS, NIS, network, SSH, performance tuning and testing servers
• Managing routine backup, scheduling jobs, enabling system logging and network logging.
• Worked with DBAs on installation of Oracle database 9i/10g
• Monitored and conducted troubleshooting, patching, upgrades and backups when required.
• Network trouble shooting, ifconfig and Worked closely with vendors on Hardware Problems, software fixes.
• Configuration and administration on standard UNIX services like SSH, FTP, NFS, DNS, NIS, SSL and SUDO.
• Created and managed user/group accounts, password and setting up permissions.
• Responsible for tasks like managing Disk Space and File System.
• Developed bash shell scripts to automate routine activities.