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Linux Administrator Resume

Scottsdale, AZ

SUMMARY:

  • Around 10 years of experience in Redhat Linux & Solaris Administration with VERITAS Volume Manager and VERITAS Cluster Server, Knowledge on Virtualization (VMware, Zone and LDOM) & AWS.
  • Expertise in Amazon AWS Cloud Administration which includes services like: EC2, S3, EBS, VPC, ELB, AMI, SNS, RDS, IAM, Route 53, Auto scaling, Cloud Front, Cloud Watch, Cloud Trail, Cloud Formation, OPS Work, Security Groups.
  • Experience in Redhat Linux Administration (Installation, Configuration, Tuning and Upgrades).
  • Expertise in Administration of Redhat Linux 6 and 7 & Solaris 10 and 11.
  • Installation/Administration of Redhat Linux on HP ProLiant & DELL PowerEdge, VMware.
  • Installation of Patches, Security fixes Packages and Firmware upgrades on Redhat Linux
  • Configured Oralce ASM disks for Oracle RAC servers in Redhat Linux. Worked with Database
  • Administrators to tune kernel for Oracle installations on Linux, implementing RAC servers.
  • Experienced in installing and managing Linux (RedHat Enterprise) and UNIX (Solaris) systems.
  • Volume manager s used SVM, ZFS, LVM (Ext4, XFS) & VXVM.
  • Experience in Zones/Containers and LDOMS in Solaris, Creating global and non - global zones, modified zone parameters and creating file systems on global and non-global zones.
  • Experience in Kickstart/Jumpstart installations for Red Hat Linux and Solaris Servers.
  • Extensive experience of utilizing Amazon Web Services (AWS) for cloud automation. Managed Services like EC2, S3 Bucket, Route53, ELB and EBS.
  • Worked on AWS - Amazon Cloud - EC2 (Security Groups, Elastic IP's, Load balancers, Auto scaling groups, Placement Groups), S3, Elastic Bean Stack, Direct Connect, Route 53, Cloud watch, OpsWorks & IAM.
  • Deployed Docker Engines in Virtualized Platforms for containerization of multiple apps.
  • Extensive experience in Configuring, Administering, Maintaining and troubleshooting various types of SUN SPARC & HP Proliant, DELL Power Edge Systems.
  • Managed the use of disk space, memory, network segments & other communication devices.
  • Good troubleshooting skills in day to day system administration (understanding the business criticality) and Performance tuning.
  • Having experience in Data Center operations.
  • Supporting Applications teams for installing Splunk, Arcsight, Siteminder, LDAP, MariaDB,Bladelogic,Apach,Hadoop,SAS, appdynamics.

TECHNICAL SKILLS:

Operating Systems: Red Hat Linux 5.x/6.x/7.x, Sun Solaris 10 & 11.

Virtualization Technologies: KVM, Solaris Zones, LDOM s, VMWare ESX and Vsphere, VMotion, AWS.

Tools: VERITAS Volume Manager & Cluster, Solaris Volume Manager, zfs, gerrit, Git, GitHub, Jenkins, Docker, Oracle ASM, Storix, Chef, Nagios.

Hardware: HP Proliant BL460c,DL360,DL360P,DL380P,DL560,DELL PowerEdge R630, R730xd,R640,R740,Oracle's SPARC T4 & T5, T7 servers, Sun Fire V480, V490, V880, V890, M5000,M4000, SUN Fire T2000, T5120, T5220.

PROFESSIONAL EXPERIENCE:

Confidential, Scottsdale, AZ

Linux Administrator

  • Creating installing and maintaining physical, virtual Redhat-Linux servers based on project requirements.
  • Involved in building and configuring Red Hat Linux Servers using KickStart as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging
  • Updating patches /kernel on Linux servers to avoid vulnerabilities
  • Maintain the security posture of operational systems by applying and verifying patches in accordance with STIG compliance.
  • Building /supporting Oracle RAC cluster nodes in Linux
  • Working with storage team to configure ZFS, Ext4 / XFS / GPFS file systems upgrading hardware BIOS firmware to remediate Spectre Meltdown vulnerability on HP / DELL hardware
  • Monitoring the CPU, Memory & Swap utilization. File system Cleanup, Disk Utilization Activities
  • Installing patches, packages using YUM & RPM. & Linux OS Install using Kickstart.
  • Oracle ASM installation and configuration in Linux
  • Involved in coordinating faulty hardware replacements (Disks, Fans and power supplies, RAM Modules, CPUs, I/O Cards, Mother Boards and Network Devices etc.)Through a field engineer from the Vendor.
  • Created and maintained Branches, labels, work spaces on Git, participated in merging of source code
  • DELL iDRAC / HP ILO configuration and upgrading their firmware.
  • Installing / Configuring Storix backup software in Linux servers
  • Configured DELL / HP call home setup .
  • Adding or removing Luns from servers.
  • Working/supporting with database and application teams while their deployment/upgrades.
  • Deployed distributed Jenkins environment for continuous integration/builds.
  • Knowledge of source code repository administration along with build tools like GIT/Github.
  • Implementing a Continuous Delivery framework using Jenkins, Chef and Git in Linux environment.
  • Worked on monitoring tools like Nagios, Splunk, AWS Cloud Watch to health check the various deployed resources and services.
  • Worked with Chef Enterprise Hosted as well as On-Premise, Installed Workstation, Bootstrapped Nodes.
  • Installed and upgraded EMC Power path multipathing software on SUN Solaris & Redhat Linux servers.

Environment: Redhat Linux 5, 6 & 7, VMware, HP Proliant BL460c,DL360,DL360P,DL380P,DL560,DELL PowerEdge R630, R730xd,R640,R740 and Oracle ASM, Storix,IBM GPFS, Solaris 10 & 11,AWS,git,Chef,Docker,Jenkins,Nagios.

Confidential

Solaris & Linux system Administrator

  • Performed day to day basis System Administration tasks.
  • Installed, Configured and Maintained Red Hat Linux (Red Hat Enterprise Linux 5.x & 6.x) on x86 and Blade Servers.
  • Worked with vendors Oracle and Redhat support during patching and upgrades.
  • Worked on troubleshooting tickets on critical server issues on day to day basis.
  • Patched Solaris 10 & Redhat 5 & 6 servers in all types of environments (PROD, PROD-DR, DEV, UAT), these servers include zones and clustered servers.
  • Involved in coordinating faulty hardware replacements (Disks, Fans and power supplies, RAM Modules, CPUs, I/O Cards, Mother Boards and Network Devices etc.)Through a field engineer from the Vendor.
  • Installed and upgraded EMC Power path multipathing software on SUN Solaris & Redhat Linux servers.
  • Installed and configured of VERITAS Foundation suite including Veritas Volume manager, Veritas file system, Veritas Cluster services.
  • Handled new project works like new Server builds, Server decommissioning and Server migrations as per the customer requirement.
  • File system administration with SVM, VXVM, LVM and ZFS which includes configuring Storage Luns(SAN) and Creating/Extending/Shrinking/Migrating files systems using RAID technologies.
  • Administrated and configured Veritas Volume Manager which includes installing VXVM software, configuring storage disk to VXVM and creating Veritas Volumes with RAID technologies. Also regular operations in Diskgroups, disks, Volumes, Plexs and Sub-disk level.
  • Supporting & Installing Applications like Java 7, Weblogic, Oracle, Apache on Solaris & Redhat.
  • Worked with Database administrators to tune kernel for Oracle installations on Linux.
  • Day to day Linux hardware support, problem and change ticket implementations, OS builds & upgrades along with day-to-day Storage
  • Experience in systems administration & support, worked on SUN including installation, configuration, troubleshooting and tuning on all Solaris servers along with Zone management on Solaris 10.
  • Installing patches, packages using YUM & RPM
  • Used security groups to develop a logical firewall to ensure high security for control applications.
  • Launching Amazon EC2 Cloud Instances (Linux) using Amazon Web Services and Configuring launched instances with respect to specific applications.
  • Implemented Amazon AWS setting up EC2 instances, virtual private clouds, and security groups.
  • Created and maintained Branches, labels, work spaces on Git, participated in merging of source code

Environment: Sun Fire V210, V240,V245, V440, V445,280R, Sun Fire V480, V490, V880, V890, SF V6800,M5000,M4000, SUN Fire T2000, T5120, T5220,Veritas Volume manager & Cluster, Solaris 9&10, Zones, Redhat 5 & 6, Remedy 7.5,DNS,NIS,NFS,FTP,AWS .

Confidential

Linux, Solaris Administrator

Responsibilities:

  • Performed Solaris kernel patching (Parallel) and firmware up gradations on x 86 / SPARC environment.
  • Experience in RHEL Provisioning, Upgrades, Patching, Configuration and Performance Tuning in Linux environment using satellite server.
  • Performed Solaris Build on x86 environment.
  • Implemented changes like Patching, OS upgrade, VERITAS upgrade, modifying VCS and Zones configuration.
  • O/S System upgrades migrations, Installation Packages and patches.
  • Updating patches on solaris/Redhat linux servers
  • Maintained OS, Server and Virtualization infrastructure through daily service.
  • Mirroring of root disks using Hardware Raid Controller on HP
  • Managed and monitored all aspects of Redhat Linux Servers.
  • Designing and managing disk space using Logical Volume Management (LVM). Creating VG and LV extend file system.
  • Added Packages and Patches & firmware to keep the servers up to date with latest OS versions.
  • Installed, updated, and configured the necessary packages using the RPM and YUM software/package management
  • Monitored System Performance of Virtual memory, System events, Swapping, Disk utilization, CPU utilization by running scripts.
  • Hardware replacement on SPARC / HP Proliant, Worked with Vendors for Hardware Issues performance Monitoring
  • Oracle ASM installation and configuration in Linux
  • Worked with Database administrators to tune kernel for Oracle installations on Linux.
  • Involved in various Decommissions of Linux Servers
  • Created metadb, soft partitions, and RAID levels using sun Solaris Volume Manager.
  • Troubleshot issues related to NFS both at Client and Server side.
  • Replaced Storage Disk on Logical Volume Manager.
  • Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
  • Managed the Volumes on Storage & Servers using VXVM, SVM & VCS.
  • Replaced Hot-Swappable Components like Power Supply, FAN, and Internal Disk.
  • Troubleshoot Server for Root Cause Analysis.
  • Adding Storage Luns to existing Disk Group, Import/Deport Disk group on Shared Nodes.
  • Managed File systems on Cluster Volume Manager.
  • Recovered root / mirror disk from Disk Failures.
  • Coordinated with different application teams, database team, Storage Team, Backup Team, vendors and Incident/Problem management team during RCA call.
  • Coordinated with different applications, database, Storage, VMware & Backup Team during activities.
  • Scheduled Hardware Replacements based on Downtime request, work with Vendor.
  • Generated Core dump, running SUN Explorer & uploaded to the SUN Site.
  • Cluster Nodes Integrated like failover/parallel, Service Group Switchover from one node to another on Cluster, Freezing/unfreezing Service Groups on Cluster, Clear the Resource Groups on Service Groups, Checking Private Channel Connectivity between Nodes
  • Interfaced Client calls and Meetings regarding discussion of the issues depending on the severity levels.
  • Configured Solaris Zones in Solaris 10. (Created Whole root zone and Sparse root zone).
  • Disk mirroring and RAID implemented, Increased file system size online using Solaris Volume Manager and VERITAS Volume Manager & LVM.
  • Installed various tools like CA agent (AW Services), VAS (Vintella Authentication Services) on various UNIX servers.
  • Fixed authentication issues with Vintella AD authentication & LDAP Authentication/KEON Boks software login issues.
  • Incident management, Change management and Problem management through Remedy, keeping SLA in mind.
  • Virtualization with LDOM’s and hardware domains on M5000, M4000.
  • Knowledge on shell script.
  • Hands on experience on failed Hardware replacements related to SUN and HP Servers (like SUN SF E2900, V890, V880, V490, V480, V440, V240, V245, T2000, M4000, x4100….. HP DL585, DL385, DL380, DL580, BL680...)

Environment: Sun Fire V210, V240,V245, V440, V445,280R, Sun Fire V480, V490, V880, V890, SF V6800,M5000,M4000, SUN Fire T2000, T5120, T5220, HP Proliant DL585, DL385 and BladeServers,Veritas Volume manager & Cluster, Solaris 10, Zones.Redhat Linux 5 & 6, HP Opsware, HP OV,Blade Logic, Remedy 7.5,DNS,NIS,NFS,FTP.

Confidential

Solaris system Administrator

  • Worked on escalated cases from L1 Support team
  • Joined Bridge Calls as per Client Request
  • Worked with Vendors for Hardware Issues
  • Building, Installing, Configuring servers from scratch with OS of Red Hat Linux & Solaris .
  • Performance Monitoring & System Utilization, File system Cleanup, Disk Utilization Activities
  • Increased File systems on Logical Volume Manager
  • Added Storage Luns to existing Disk Group
  • Import/Deport Disk group on Shared Nodes
  • Managed File systems on Cluster Volume Manager
  • Manuel Service Group Switchover from one node to another on Cluster, Handling failing Resources on service groups, Freezing & Unfreezing the service groups
  • Performed DR Test on Cluster Nodes
  • Scheduled Hardware Replacements based on Downtime request
  • Applied OS patches on Servers
  • Generated Crash Dump, running SUN Explorer & upload to the SUN Site
  • Performed SAN migrations on Weekends with SAN Team, Multipath checking for all disks on server when doing Migrations
  • Increased VERITAS /SVM Volumes & adding additional disks to Disk Group.

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