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Unix/linux Systems Engineer Resume

Dallas, Tx

SUMMARY:

  • Over 7+ years of experience in administration/architecture of Linux/Solaris Operating Systems in Standalone, Clustered environments.
  • Experience in installation, configuration, and maintenance of Oracle Solaris 8, 9, and 10 and Red Hat Enterprise Linux 5, 6, and 7.
  • Strong knowledge on Linux, Automation Tools like Puppet
  • Installed Solaris using Jumpstart and Linux using Kickstart.
  • Experience in administering Linux running on VMware ESX 3.5, vSphere 4.0
  • Worked on Solaris Zones and LDOMs running on Solaris 10/11.
  • Experience in Installing Firmware Upgrades, kernel patches, systems configuration, and performance tuning on UNIX/Linux systems.
  • Extensively worked on setting up Exadata racks.
  • Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup, and VERITAS Cluster Server.
  • Worked on SALT configuration management tool
  • Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SFTP
  • Experience on Webservers such as Tomcat 3.x, 4.x, 5.x & Apache Server 1.x, 2.x and integrating them with Weblogic 10.x servers.
  • Experience in development and configuration experience with software provisioning tools like Puppet and Ansible.
  • Experienced in clustering load balancing techniques to ensure HA.
  • Experience on OpenStack infrastructure to enable the continue innovation.
  • Experience on Zabbix of monitor the servers and applications.
  • Strong understanding of infrastructure automation tooling using Ansible.
  • Expertise in scripting for automation and monitoring using Bash and Perl scripts.
  • Worked with Database and Middleware administrators to tune kernel parameters.
  • Installation and configuration of Weblogic, Jboss, and Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
  • Experience on CFEngine infrastructure automation and continuous operation.
  • Prepared documentation for standard operating procedures of various administration tasks.
  • Team player with good management, analytical, communication and interpersonal skills.

TECHNICAL SKILLS:

Operating Systems: RHEL 4/5/6/7, Solaris 9/10/11, SuSE 10/11/12

Hardware: HP Proliant, Blade servers, Sun Servers E4500, E6500, E6900, E10K, E15K, E25K, V280, V490, V880, V890, M3000, M4000, M5000, T5120, T5220, T5420, T4 - 1, T4-2, T5-1, Dell PowerEdge R710, R720, R810, R820, DMX3 and DMX4 Storage Arrays, EMC Symmetrix and CLARiiON

Software: Vertias Volume Manager, VERITAS File System, VERITAS Cluster Server 3.5, VERITAS Netbackup 6.0

Cloud Technologies: Puppet, Ansible

Web/ Application Server: Tomcat, Apache DB2, Oracle R11&R12

Network Protocols: DHCP, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump.

Cluster Environment: VCS, Oracle RAC, Redhat Cluster

Programming Languages: Bash, Perl

PROFESSIONAL EXPERIENCE:

Confidential, Dallas, TX

Unix/Linux Systems Engineer

Responsibilities/Projects:

  • Responsible for design, build, deployment, patching and upgrade of Linux/Solaris servers. Design, Build and configuration of RHEL, SuSE an
  • Responsible for providing 24x7 production support using BMC/Service Now.
  • Automated Kickstart images installation, build, patching and configuration of 500+ Enterprise Linux servers on Dell PowerEdge and Sun hardware.
  • Performed OS upgrades, migrations on Redhat, SuSE and Solaris
  • Coordinated with Application developer teams to assist in troubleshooting.
  • Primary member of the team to successfully implement SPARC migration from Sun hardware to LDOMs running on Solaris 10 and Solaris 11.
  • Experience with change control management using BMC Remedy tool in handling Work Orders on production systems in a large datacenter environment.
  • Migrated Linux virtual machines from one vCenter to another using vConverter.
  • Responsible for patching large number of Linux/Solaris servers using Satellite.
  • Responsible for setting three-node VCS on Linux nodes.
  • Experienced working with Veritas Volume Manager (VxVM) and Logical Volume Manager (LVM) on Solaris and Linux operating systems.
  • Extensively worked on file systems like EXT2, EXT3, UFS, VxFS, VxDMP, VCFS, OCFS, OCFS2, ASM, and other journaling filesystems.
  • Provided web server/ application like Apache, Tomcat, JBoss, WebLogic, Websphere support on UNIX environment.
  • Experience with automating installations, post configurations, developing tools and day-to-day activities using shell scripts like bash and perl.
  • Experienced with working on monitoring tools like Netcool and Zabbix.
  • Automated Jumpstart installation, build, configuration and support of 100+ Solaris 9/10 servers on Sun Sparc hardware.
  • Installed and configured Solaris 10 zones. Performed Solaris Live Upgrade.
  • Installed and configured Red Hat Network Satellite for managing, provisioning and monitoring RHEL 5 servers.
  • Configured LVM, NIS, NFS, Web Server, Samba server, DHCP server, NAT, Primary Secondary and cache-only DNS server. Administered mail servers.
  • Responsible for setting up 3-node Oracle 10g RAC cluster on RHEL and Solaris servers.
  • Experiencing with configuring Netbackup on Linux and Solaris boxes.
  • Responsible for setting up Development, Stage and Production Oracle10g RHEL 5 grids
  • Experience with Kernel upgrades, OCFS, OCFS2 and ASM upgrades from Oracle OTN in regular intervals for Development, Stage and Production Oracle 10g/Linux grid environment.
  • Experience with Kernel upgrades from RHN, OCFS, OCFS2 and ASM upgrades from Oracle OTN in regular intervals for Development, Stage and Production Oracle 10g/Linux grid environment.
  • Responsible for deploying Oracle database environments on large number of oracle enterprise Linux systems.
  • Coordinated with Oracle DBAs on wide range of projects to troubleshoot, performance tuning and optimizing database applications.
  • Responsible for setting up ASM diskgroups and configure raw devices for database configuration

Confidential, Austin, TX.

UNIX/Linux Administrator

Responsibilities:

  • Administration of RHEL 5, 6, and 7 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
  • Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
  • Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
  • Setup and Configuration of Puppet Configuration Management.
  • Build and modify CloudFormation stacks.
  • Migrated applications to the AWS cloud.
  • Developed and managed cloud VMs with AWS EC2 command line clients and management console
  • Administration, package installation, and configuration of Oracle Enterprise Linux 5 and 6.
  • Developed Ansible playbooks to configure, deploy and maintain software components of the existing/new infrastructure.
  • Implemented Puppet modules to automate configuration of Upgrading the linux kernel and Managing persistent SSH tunnels.
  • Installation and up-gradation of the operating system (RHEL,Ubuntu) and other applications.
  • Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
  • Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment. Extensively performed SAN Migration.
  • Worked in production & application support 24/7 in NAS, EMC SAN Storage on Linux Environment.
  • Implemented security policy and managed firewalls/IDS. Managed DNS, send mail, IP space, and co-location facility transition.
  • Maintained Volumes and File systems for Oracle, MySQL, DB2, Sybase databases.
  • Applying security patches to RHEL servers using Red Hat Satellite.
  • Managing systems routine backup, scheduling jobs using cron, enabling system logging, network logging of servers for maintenance, performance tuning, and testing.
  • Performed data-center operations including rack mounting and cabling.
  • Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, and testing.
  • Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager and Logical Volume Manager.
  • File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation.
  • Upgraded firmware on HP, DELL, and IBM blade servers running Linux.
  • Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
  • Extensive exposure to Configuration Management policies and practices with regards to SDLC; along with automation of scripting using BASH/Shell, Perl scripting.
  • Worked on Zabbix for to integrity of servers, mechanism of flexible notifications for any virtual event and reporting.
  • Installing and configuring Apache and supporting them on Linux production servers.
  • Worked on SALT configuration management server to update configuration on Linux servers.
  • Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
  • Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
  • Adding servers to the domain and monitoring them using Spectrum, Nagios, Check MK, and BMC.
  • Documented various system admiration tasks to be used by team.

Environment: RHEL 5, 6, and 7, Solaris 8 and 10, MySQLVMWare vSphere, VMWare vCAC, Red Hat, Ubuntu, Satellite, Ansible, Ruby, Bash, Puppet,Dell PowerEdge R710, R720, R820, HP Proliant, Oracle T5220, 5420, T4-1, T5-1, V880, VVM, VCS, VNB, EMC Symmetrix and CLARiiON.

Confidential

UNIX Administrator

Responsibilities:

  • Installation and administration of RHEL 4, 5, and 6, Solaris 8, 9 and 10, and SUSE 9 and 10.
  • Configured kickstart server and applied patches to the servers using Satellite.
  • Installation, configuration and administration of VMware, Solaris Zones and LDOMs.
  • Installed, configured, cloned VMs on VMware 5, Vsphere 4.0, configured ESX hosts, adding datastores to ESX hosts, creating vswitches, templates, migrating VMs across ESX hosts.
  • Running jobs and applying patches using HP Server Automation Tool (HPSA)
  • Installed several security packages like SNORT, tcpd, tcp-wrappers & ASSET.
  • Created, Implemented and maintained Disaster Recovery Site for File Server using DFS.
  • Performed capacity analysis, monitored and controlled disk space usage on systems.
  • Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
  • Set up user and group login IDs, network configuration, password, resolving permission issues
  • Checking the Logs for errors in the NAS boxes, having knowledge on snap lock volumes, thin provisioning and Fabric switch zoning (Brocade).
  • Installation and maintaining the OpenStax hardware and software
  • Implemented and Enhanced the Existing Scripts which are developed in BASH, Perl, and SQL.
  • Installation and up-gradation of the operating system (RHEL,Ubuntu) and other applications.
  • Implementing Puppet for a start-up in preparation for compliance requirements due to an impending acquisition by a large, publicly traded company.
  • Developed Ansible playbooks to configure, deploy and maintain software components of the existing/new infrastructure.
  • Cert PKI manager via Symantec for Cert provisioning and renewals: for servers and site hosting
  • Setup and Configuration of Puppet Configuration Management.
  • Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
  • Wrote puppet manifests for deploying, configuring, and managing collectd for metric collection and monitoring.
  • Build automatic provisioning system with kickstart and Puppet.
  • Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
  • Set up and support network hardware using TCP/IP, SMB, VPN, IPSEC, VoIP
  • Manage a VoIP phone network, IPad and Microsoft Surface support/configuration
  • Worked with project manager and auditing teams to implement PCI compliance.
  • Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.

Environment: RHEL 5, 6, and 7, DELL and IBM blades, SUN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris 2.6/2.7/8,XML, PKI,SQL,Puppet,Ansible,Ruby,OpenStax,VERITAS NetBackup, VERITAS Volume Manager, Samba, NFS, NIS, LVM, Linux,Shell Programming.

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