PROFESSIONAL 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 RHEL 5/6/7, SuSE 10/11/12, Solaris 10/11.
• Strong knowledge on Linux, Automation Tools like Puppet and Ansible.
• 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.
• Responsible for setting up and configuring dockers on AWS/OCI.
• Demonstrated knowledge of multi - cloud platforms (AWS, OCI, etc) to be able to identify and prioritize potential security challenges.
• Leveraging OCI and Ansible to rapidly provision internal computer systems for various clients.
• 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 Web logic 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 monitors 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 Web logic, Jboss, and Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
• Provided support for applications and developers team with JAVA and JavaScript background as an admin/support.
• Experience on CFEngine infrastructure automation and continuous operation.
• Experience in installing Veritas, Installing and configuring the Veritas Cluster Server (VCS), Veritas HA using Veritas storage administration (VxVM, VSF) for Storage Array Network (SAN) configuration.
• Understanding of Java, JavaScript working environment.
• Prepared documentation for standard operating procedures of various administration tasks.
• Team player with good management, analytical, communication and interpersonal skills.
• Maintaining documentation for Citrix and application installs.
• Daily tasks included working with Citrix end users and working with application teams to install, improve or deploy updates to their applications installed in Citrix.
• Scheduling jobs using crontabs.
• Troubleshooting and configuration of SSH, NFS and Apache servers.

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, Citrix., Web-logic.

Cloud Technologies: Puppet, Ansible, AWS, OCI

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

Network monitoring tools: Wireshark, Splunk

Virtualization: Dockers, Containers, VMware, Xen, KVM, Kubernetes

PROFESSIONAL EXPERIENCE:

Confidential, Denver CO

Unix/Linux Systems Engineer

Responsibilities:

• Responsible for design, build, deployment, patching and upgrade of Linux/Solaris servers.
• Design, Build and configuration of RHEL, SuSE and CentOS.
• 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 Red-Hat, SuSE and Solaris
• Coordinated with Application developer teams to assist in troubleshooting.
• During production, provided support as an admin for Java and UI developer’s teams.
• Primary member of the team to successfully implement SPARC migration from Sun hardware to LDOMs running on Solaris 10 and Solaris 11.
• Migrated applications to the AWS/OCI cloud.
• Developed and managed cloud VMs with AWS EC2
• Conduct systems design, feasibility and cost studies and recommend cost effective cloud solutions such as Oracle Cloud Infrastructure (OCI) and AWS.
• Wrote Ansible playbooks to launch OCI, AWS instances and used ansible to manage web applications, configuration files, used mount points and packages.
• Experience with change control management using BMC Remedy tool in handling Work Orders on production systems in a large datacenter environment.
• Used CI/CD tools Jenkins, Git, Jira and docker registry/daemon for configuration management and automation using Ansible.
• Used Kubernetes in the orchestration of the deployment, management and scaling of Docker containers.
• Proficient with containers systems like Container orchestration for instance, Kubernetes, EC2 container service, experience with Terraform, etc.
• Manages and maintained Docker containerization and Docker orchestration using Kubernetes.
• 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, Web-Logic, Web-Sphere 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/Solaris
• Experiencing with configuring Net backup on Linux and Solaris boxes.
• Responsible for setting up Development, Stage and Production Oracle10g
• 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 disk groups 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/virtual servers.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Responsible for patching and upgrading using Yum.
• 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.
• 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.
• Virtualized servers using dockers for test environments.
• Experience in creating Docker containers leveraging existing Linux containers and AMI’s in addition to creating Docker Containers from scratch.
• Built and deployed Ci/CD pipelines.
• Orchestrated Ci/CD processes by responding to Git triggers, human input, dependency chain and environment setup.
• Collaborating with Application and Java/UI developer’s teams.
• Installed RPM’s, patches and upgraded OS kernel versions when necessary.
• 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)
• 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.
• 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, 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.
• Experience in 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, MySQL, VMWare, vSphere, 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 (REMOTE after 6 months)

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.
• Responsible for manual patching on RHEL and satellite servers.
• Installed patches and updated them from security enhancement addressing vulnerabilities.
• 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 collected 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, I Pad 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, OpenStack, VERITAS NetBackup, VERITAS Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.