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Devops Engineer/linux Systems Engineer Resume

Bethpage N, Y

SUMMARY

  • Seven years of System Administration and IT experience in multiplatform LINUX/UNIX with hands - on experience in system configuration/integration tools.
  • Experience configuring and managing Puppetmaster server and experience in updating and creating modules and pushing them to Puppetclients.
  • Proven ability to automate server builds using kick start, management and configuration of system services using Puppet.
  • Expert in load balancing techniques and knowledge of puppet tool.
  • Automated configuration management and deployments using Ansibleplaybooks and YAML.
  • Hands on setting up teh Ansiblecontrol machine and configured teh remote host inventories via ssh.
  • AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, SNS, RDS, Cloud Watch, Route53, Auto scaling, Security Groups, Red shift, and Cloud Formation.
  • Setting up data in AWS using S3 bucket and configuring instance backups to S3 bucket.
  • Solid understanding of RPM & YUM, building, maintaining, and installing packages.
  • Worked on Installing KVM (Kernel Virtual Machine), configuring KVM Virtual Network, and creating KVM Networked Bridge Interface, creating KVM Virtual Machines
  • Hands-on experience with VMware, installation, configuration of ESX 5.5
  • Creating and managing virtual machines and snapshot of machines
  • Backup management and recovery policies using VERITAS Net-Backup.
  • Hands-on experience in configuring SSH and FTP server/client systems to transfer files.
  • Intermediate experience of various networking devices and network protocols.
  • Hands on experience in System Administration, Installation, Upgrading, Patches, Migration, Fine-Tuning on Linux & UNIX (Centos, RHEL) systems.
  • Build physical and virtual servers using PXE-boot with customized kick start files.
  • Troubleshooting and managing servers running Red hat and CentOS.
  • Installing and configuring infrastructure servers such as FTP, HTTP, DNS, DHCP, TFTP and NIS.
  • ID Management & user administration in NIS domain; Trouble shooting and administration of NIS Master-slave
  • Experience working with ticketing systems RT and BMC Remedy
  • Experience in Creating, Mounting and Unmounting New File Systems.
  • Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LAMP web service environment.
  • Managed TCP/IP packets and DHCP servers. Monitoring system performances using Nagios and managing network issues.
  • Strong Knowledge in implementation of enterprise storage solutions SAN (created VGs and LVs on san disks), NAS (mounted and shared NAS devices for servers), logical volume management (LVM).
  • Independent problem solving and a good team player with strong interpersonal and communication skills.
  • Experience in writing shell scripts to automate teh administrative tasks and management using cron and at.
  • Experience in using various network protocols such as, HTTP, UDP, POP, FTP, TCP/IP and SMTP.
  • Experience with different filesystems like ext2, ext3, ext4 and XFS.
  • Experience configuring different RAID levels for system redundancy.
  • Working closely with backup team to ensure all servers are being backed up.
  • Responding to incidents and working with vendors to resolve system issues.
  • Working closely with security team and reviewing Qualys scan reports to remediate vulnerabilities by applying patches.
  • Solid understanding and knowledge of change management processes.

TECHNOLOGY SKILLS:

  • Bash shell
  • Pxe-Boot
  • Kickstart
  • Red Hat Enterprise Linux 5.x/6.x/7.x
  • CentOS 6.x/7.x
  • Linux Mint
  • HTTP
  • FTP
  • NFS
  • NIS
  • CIFS
  • Ansible
  • Ping
  • Traceroute
  • Netstat
  • Ethtool
  • Tcpdump
  • Nslookup
  • Dig
  • Telnet
  • AWS Wireshark
  • Esxi 5.5
  • vCenter
  • Vsphere client
  • vMotion
  • HA
  • DRS
  • Resource Pools
  • VMware Workstation
  • Snapshots
  • Templates
  • Datastores
  • iSCSI
  • NAS
  • Fiber Channel cables
  • SAN
  • LAN
  • EMC
  • VNX
  • Netbackup 7.6
  • Service Now
  • Qualys
  • LDAP
  • Apache Tomcat
  • Apache HTTPD
  • YUM
  • RPM
  • Physical Servers: Dell PowerEdge R710
  • R810
  • HP BL460C
  • C-7000
  • Cisco C220
  • C240M4
  • Cisco switches: 6500
  • 2750
  • 2900
  • HP ILO
  • TCP/IP
  • UDP
  • POP
  • SMTP
  • SMB
  • IMAP
  • SSH
  • ICMP
  • Racking
  • Stacking
  • Cabling
  • Physical
  • Servers.

PROFESSIONAL EXPERIENCE:

Confidential, Bethpage, N.Y

Devops Engineer/Linux Systems Engineer

Responsibilities:

  • Deploying virtual machines and physical servers using PXE-boot with customized kickstart profiles.
  • Built more TEMPthan 300 RHEL 7 servers.
  • Responsible for complete user management which includes creating, modifying and deleting user accounts.
  • Installing and updating packages using YUM (custom YUM Servers/repositories), Red Hat Satellite Server.
  • Managing filesystems, users and groups permission and keeping systems up-to-date.
  • Solving issues related to user logon, NIS and host connectivity.
  • Providing direct user and application support.
  • Monitoring infrastructure servers using Nagios monitoring tools and responding to alerts as needed.
  • Restoring VMs and data upon in case of any issues.
  • Working closely with storage engineers to set up NFS/CIFS shares and as well as requesting LUNS for physical and virtual servers.
  • Submitting sos-reports to Red Hat to fix system issues.
  • Working closely with developers to deploy applications and fix issues.
  • Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
  • Perform storage management in Solaris 10 RHEL 6 & 7, and CentOS 6 & 7. Partitioning new harddisks, adding and mounting filesystems. Volume management using LVM.
  • Tuning teh kernel parameters based on teh application/database requirement
  • Configured RAID levels, Disk replacement and File System recovery
  • Expertise in working with MySQL databases, Apache Web server, Tomcat Application Servers
  • Working closely with security engineers to remediate vulnerabilities by applying patches.
  • Keeping teh system secure by applying patches, configuring firewall and enabling SELinux in RHEL 6 & 7.
  • Experience NIC bonding/NIC Teaming configuration in Linux/UNIX/Windows/VMware systems to increase teh bandwidth or redundancy based on requirement by teh application.
  • Creating and expanding volume groups and logical volumes as needed.
  • Managing Packages using YUM and RPM.
  • Performance tuning systems using commands like top, vmstat, iostat and sar.
  • Setting up network interfaces, troubleshooting network connectivity and resolving network related issues.
  • Running ansible ad-hoc commands and writing ansible playbooks to manage and automate configuration.
  • Worked onAnsiblePlaybooks to Automate teh rolling restarts of Application Servers.
  • Used file module inAnsibleplaybook to copy and remove files on remote systems.
  • Experienced on Red Hat Satellite Server with custom repositories to provide a stable management solution for teh Linux environment.
  • Implemented active directory using LDAP services and used in conjunction with PAM (Pluggable Authentication Module).
  • worked in several AWS services S3, VPC, Cloud Watch, Auto scaling configurations etc.
  • Worked with cloud infrastructure of AMAZON WEB SERVICES and computing AMI virtual machines on Elastic Compute Cloud (EC2).
  • Installed teh application onAWSEC2 instances and configured teh storage on S3 buckets.
  • Design roles and groups for users and resources using AWS Identity Access Management (IAM).
  • Design AWS account in such a way dat teh user has minimum privileges and still be able to do wat engineers need to do for their project.
  • Creating new filesystems, fixing filesystem errors using e2fsck.
  • Managing company’s documentation on internal share point site.
  • Experience in writing bash scripts for job automation.
  • Building ESXI servers with hypervisor 5.5 and deploying virtual machines.
  • Taking snapshots and creating templates to build virtual machines.
  • Performed VMotion and Storage-VMotion as per teh environment requirement based on teh resources.
  • Building, installing, configuring and maintaining VMware ESXi hosts.
  • Applying patches on ESXi servers, monitoring, analyzing and fine-tuning ESXi hosts with vendor assistance.
  • Vmotion virtual machines between clusters as needed.

Confidential, Lockport N.Y

Devops Automation/Linux Operations Support

Responsibilities:

  • Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
  • Managed systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system login, network plunging of servers for maintenance, performance tuning, testing.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
  • Installing and partitioning disk drives. Creating, mounting and maintaining file systems to ensure access to system, application and user data.
  • Monitored teh health of teh servers, Operating system, database and teh network.
  • Maintaining appropriate file and system security, monitoring and controlling system access, changing permission, ownership of files and directories, maintaining passwords, assigning special privileges to selected users and controlling file access.
  • Installed and maintained several Linux servers on a virtual environment
  • Resolving system errors and crashes, huge file sizes, file system full errors.
  • Remote system administration using tools like SSH, Telnet in Linux.
  • Monitoring system performance and check teh status of teh system using utilities such as SAR, TOP, VMSTAT, IOSTAT, NETSTAT etc.
  • Troubleshoot performance related issues on RHEL Virtual and physical servers.
  • Taking backup using tar and recovering during teh data loss.

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