Linux Admin

U Uzair Junaid

*****.*******@*****.***

Ph#217-***-****

SUMMARY:

Around 7+ years of total experience with Aix, Linux and Solaris Platform.

Experience with administration, regular maintenance, problems and change management.

Infrastructure support for cloud based concierge startup. Consulted on and implemented security for RHEL6 Iaas systems. Designed process to quickly and easily generate new systems with all requisite security hardening and software already done and/or installed.

Performed partitioning and configuring with HMC.

Experienced in all aspects of AIX and LINUX System Administration such as: OS installation and upgrade, OS problem resolution, application of OS fixes, installation of application software, administration of user accounts, system configuration, troubleshooting, system monitoring, system tuning, and security updates hardware maintenance, disk usage maintenance, etc.

Adept at Monitoring and altering file system usage, hardware and system process failures.

Proficiency with configuration and maintenance of NFS, DNS, NIS/NIS+, DHCP, SMTP, and Networking with TCP/IP.

Experience in monitoring the availability & performance of Servers through tools like vmstat, netstat, vmstat and iostat.

Backup and restoration process in UNIX and Linux platform

Experienced in implementing the workload Management (WLM) using cloning and clustering.

Installed Veritas Cluster Server on UNIX platforms

In depth knowledge in server buildups, cloning.

Configured and migrated virtual machine from one host to other.

Worked on Vmware virtualization platform.

Managing and mounting file systems (using NEWFS, FORMAT, FSCK, MOUNT, VOLD) ufs. And Installing the Solaris operating system.

Installation and configuration of LPAR’s with AIX 5.3 and 6.1 on p5 and p6 servers.

Installation and configuration of VIO Server with AIX 5.3 on 570, 590 and 595 models.

Implementing and managing resources in VIO server Installation of web sphere on aix server.

Migrating AIX OS from 5.1 to 5.x and 6.x

Expertise in migration from HACMP V4.4 to HACMP V4.5 and migrations of data center

Extensive Experience in optimization of Enterprise Applications using WebSphere

Configuration management including the building of LPARs and configuring the hardware devices that support them.

Disaster Recovery Planning.

Skilled at IBM-AIX kernel Tuning, Performance Analysis and Load Balancing.

Everyday Network administration tasks - adding and removing users file and share permissions, trust management, replication management, server backups, and server setups.

Performed user tasks including submitting and managing parallel, serial and interactive jobs.

Proven ability to define System requirements, recommended solutions, analyze capacity and make appropriate modifications

Writing the Root Cause Analysis if there was any outage happened due to an issue caused by the Servers supporting by the Team.

Analyzing the problems and resolving the issues with zero or minimum down-time.

Identifying, researching and recommending the improvements to the existing processes based on best practices with repeatable standard configurations.

Excellent team worker and ability to quickly adopt and work under minimal supervision.

TECHNICAL SKILLS:

LANGUAGES : C, C++, java, servlets, jsp, ejb, vb, javascript, html, perl and shell programming.

OS : IBM aix (5.0), linux (redhat, suse), windows 2000/nt4.0 windows 2003, sun solaris, mac8.1/9/10 and os2.

IDE : visualage3.5/4.0, websphere application studio4. Jbuilder, code warrior, clearcase, clearquest and rationalrose

WEB TECHNOLOGIES : html, dhtml, xml, java script, jsp, servlets, and ejb

APPLICATION SERVERS : Websphere application server 3.5/4.0, netscape/iplanet server, mqseries, weblogic server, IBM http server.

NETWORKING : TCP/IP, nis, nfs, dns, dhcp, cisco routers/switches, lan.

RDBMS : IBM udb2, oracle 7.x/8.0/9i, ms-sql server 7.0/6.5 and ms-access 97/95.

OTHER SKILLS : Tivoli, Keon, Control M (6.1), ESM, Autosys (4.1 –R11), Guardium (v8.0 to 9.0), DB2 (v9.5 –v10.5) ETL informatica (v9.x) Cfengine, Symantec, Wire shark, Nagios, Puppet.

WORK EXPERIENCE:

Client: Applied Industrial Technologies

October 2014 – Current

Cleveland, Ohio

Role: System Administrator

AIX POWER (5.x, 6.x) and RedHat Enterprise Linux servers (5.x, 6.x)

HMC upgrade from 7.7.2 service pack 5 to 8.8.0 service pack 1.

Recovery of HMC via backup.

Managing LVM via XIV storage management. Adding/reducing/creating/replication of luns.

Troubleshooting network issues via TCPdump and using Wire shark for analyzing purposes

Project management: Setting up/creating DR environments as per business request by planning and executing the plan.

Configured and troubleshoot SMTP Mail protocol.

Creating modules and manifests for Puppet for automate installation/update via puppet.

Resolving any issue with LDAP or any issues with security authentication.

Supporting SAP, SQL, Oracle and DB2 database application.

Engaging Vendor for any hardware issue or kernel debugging, providing specifics of the operating system.

Daily responsibilities managing customer request via ticketing tool and managing the environment via centreon.

Maintained and support SAP, DB2 (V9.5 to 10.5) and ETL informatica (v9.x).

Client: JP Morgan Chase

September 2012 – September 2014

Columbus, Ohio

Role: System Administrator

AIX POWER (5.x, 6.x) and RedHat Enterprise Linux servers (5.x, 6.x)

System partitioning and virtualization utilizing IBM AIX POWER LPAR/DLPAR technology and Virtual IO Server/Micropartioning (pSeries), as well as RedHat Linux VM (HP servers).

Supporting highly reliable/recoverable UNIX-based solutions that address specific business needs and requirements.

Thorough understanding of storage related technologies from a server perspective; working with provisioned SAN, NAS, external/remote storage media, etc.

Storage networking utilization - e.g. installing HBAs & drivers, configuring LUNs and volume managers (LVM on AIX or RedHat Linux).

Solid experience with clustering, load balancing and high availability solutions (HACMP, GPFS (v3.4 and v3.5), etc.

Experience in setting up cluster nodes for Oracle 11g RAC - deploying shared san for ASM, configuring VIPS and SCAN IPs.

Implemented Oracle RAC and GPFS on AIX servers.

Installing Boks KEON security software for user administration on AIX and Linux Servers.

Worked on installation and configuration of IBM Tivoli Monitoring Agents ITM5 and ITM6 on AIX and Linux servers.

Worked on installation of Enterprise security manager (ESM), register the agents on ESM console.

Worked on installation and configuring Guardium (v8.0 and 9v9.0) on AIX and LINUX servers.

Developed a simplified version of the General Parallel File System (GPFS).

Maintained and support SAP, DB2 (V9.5 to 10.5) and ETL informatica (v9.x).

Maintained system backup’s via netbackup by submitting PRIME.

Monitor and ensure that backup server maintenance tasks are successful on a daily basis, correcting any errors when necessary

Responsible for Cluster Node Management in Fail over scenarios, Fail over testing.

Implementation experience and familiarity with UNIX security models and Role-Based-Security Access.

Experience in supporting disaster recovery solutions.

Solid understanding of core networking concepts such as routing, protocols, subnets, DNS

Thorough understanding of web and FTP services

Worked with security team to authenticate LDAP or troubleshoot any security violations or reconfigured LDAP if needed.

Troubleshoot SMTP mail protocol.

Strong communication skills (verbal and written) with the ability to communicate complex issues to technical and non-technical audiences that include peers, partners, AD partners, senior management, and customers

Strong documentation skills with experience designing system design diagrams, application flow diagrams, and other related technical documentation.

Leadership abilities: ability to drive discussions with client, provides leadership for UNIX team members, and explains complex issues to AD partners and senior management.

Attention to detail and the ability to multitask.

Remain focused on critical deliverables while remaining aware of simultaneous communications and issues.

Professional customer-focused attitude at all times, even during situations of disagreement.

Understanding and experience with change management concepts, processes, and tools.

Client: Walgreens

June’ 11- September 2012

Deerfield, Illinois

Role: System Administrator

Responsibilities:

Administration, Installation and maintenance of AIX servers.

Experience in administration of enterprise applications with emphasis on IBM WebSphere Application Server 3.5/4.0/5.0, IBM HTTP Web Server Workload Management (WLM) in AIX, Sun Solaris, Linux and Windows NT/2000/XP environment.

System & backup management using IBM ADSM Backup Server.

Creating user profiles including groups and user accounts, assigning them passwords periodically and allotting them the required permissions. Changing the permission specifications as per requirements depending on User Administration duties

Installation/administration of AIX, Linux and NT/2000 Servers on a LAN.

Installation and Administration of TIVOLI Service Desk.

Disk Replacement Strategy on AIX.

Defined and setup network printers, and install client/server applications. Define/setup network protocols, Network File Services (NFS), and Network Information Services (NIS).

Performance Management & Tuning of AIX/UNIX Kernel.

Security, users, groups’ administration and daily backup and restore operations.

Package, build, integrate and deploy enterprise J2EE applications on WebSphere 3.5/4.0/5.0 that involves EAR, JAR, and WAR files.

Networking service, performance, and resource monitoring.

Client: Fanuc

Jan’09 –Feb’11

Hoffman Estates, IL

Role: System Administrator

Responsibilities:

Provided administrations and maintenance support to multiple IBM machines p5-520, p5-550, p5-570, p5-595, p7 750s and 770s running AIX 5.3/6.1

Built VIO servers and vio clients on POWER6, p5 P520,P550.P570 and p595s

Configuration management including the building of LPARs using HMC, IVM and configuring the hardware devices that support them.

Created and configured dynamic VIO servers 1.3, 1.5 and VIO 2.1

Created SEA, Control channel, assigned disks through vscsi and NPIV

Installed and configured JBoss application server and Weblogic application Server.

Supported and troubleshooted JBoss and WebLogic application servers in Unix Environment

Configured and maintained the HACMP clusters to keep the high availability applications running on IBM pSeries.

Administered the UNIX System for clustered AIX Servers running HACMP and dynamic LPARs with fiber attached SAN storage.

Installed and configured VIOS servers and related LPARs through HMC.

Responsible for NIM installation, setting up NIM servers, clients, define the resources, Alternate Disk Migration with NIM

Involved in installation, configuration and troubleshooting issues related to JCAPS.

Responsible to apply patches, fixes and service packs to JCAPS.

Provided support for other UNIX based applications and servers on an as needed basis.

Active involvement in monitoring server performance, network traffic to reduce performance bottleneck.

Involved in implementation of EMC Power path for load balancing and redundancy in data path.

Co-ordinated application team to Upgrade AIX 5.1 to AIX 5.3 and AIX 5.3 to 6.1

Extensively used LVM - created VGs, LVs & disk mirroring for IBM p-series servers

Configured NIM, NFS and NIS and standardization of all the systems.

Activities include user administration; startup and shutdown scripts; crontabs, filesystem maintenance and backup scripting and automation.

Applying software maintenance, file sets, program fixes and keeping the system software releases current.

Administration responsibilities include user, group, disk, printer and security management, File sharing Permissions.

System & Backup management using IBM TSM Backup Server and using Tape libraries.

Installed and configured IBM Tivoli Network Storage Manager (TSM) client & Server software backup and recovery solutions

Coordinated server maintenance through a well defined change control process including after hours and weekend (Sunday) work as necessary to support systems.

Generated reports to show the trends of resource utilization user/CPU/network load.

Performance Management & Tuning of AIX /UNIX Kernel.

Configuration and Administration of DNS, NFS, DHCP, FTP, Samba Servers and clients. Security layers like SSL, SSH, HTTPS, SFTP.

Installation and configuration and maintenance of Netscape and Apache web server.

Wrote shell scripts for automated installations, to extract logs.

Responsible for migrating and decommissioning of the system Creating Disk groups and volumes, plexes using VERITAS Volume Manager 5.0, Managing disks and file systems using VERITAS Volume Manager 5.0

Installing and configuring Legato Netbackup 7.3.3, VERITAS NetBackup 5.0/6.x and Tripwire

Creating UNIX file system, VERITAS File System and configuring VG’s and LV’s using LVM.

Worked extensively on HA/ Disk Volume Management with VERITAS Volume Manager/ SVM & VCS

Installed Veritas clustering on oracle and websphere server.

Installed and configured Solaris 10 Zones and containers on Solaris Enterprise server like M4000, M5000, T5220, T5240

Updated documentation of all the Servers and the installed applications and patches.

Assisted other Unix administrators when help was needed (i.e., creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc).

Client: Sysmex

Feb’07 – Dec’08

Lincolnshire, IL

Role: System Administrator

Responsibilities:

Provided server and applications administration including IBM AIX P-Series and P5 systems.

Installed open ERP client/server based on the client requirements.

Performed automation, trouble shooting and monitoring of the client/server ERP solution.

Installed and managed the system with HMC.

Configured and instaleed the web based system manager using the HMC.

Installed Vmware server 2 on the systems.

Worked on Vmware bench marking tools and troubleshooting devices.

Worked on running the virtual machines from one server to other.

Migrated virtual machines between the servers.

Filesystem management on various platforms.

Created Copies of Logical volumes on different physical volumes in rootvg or as requested by the application team.

Created active and passive clusters in HACMP.

Extended failover to backup resources at remote sites using optional PowerHA

Preparation and execution of server patching and upgrade on more than 200 servers including HP-UX, AIX, Solaris and Red Hat Linux servers. Servers included AIX HACMP and HP-UX MC/ServiceGuard clusters.

Installed and configured LAN and Flash copy.

Performed server buildup, cloning of LINUX servers.

Setup and configured vmware guests.

Performed administrative tasks such as System Startup/shutdown, Backup strategy, Documentation, User Management, Security and Network management.

Provided UNIX infrastructure, operations and support for IBM P-Series 650, 670,690 and P5 servers P570/590/595 running IBM AIX 5.X.6.1.

Performed installation, periodic maintenance updates and apply APAR fixes.

Configured IBM RS 6000,550,520,610 machines for production, staging and test environments.

Setup and configured network TCP/IP on AIX including RPC connectivity for NFS.

Created mount points for Server directories, and mounted these directories on AIX Servers.

Configured and administrated Lpar’s.

Configured and administrated VIO server and Lpar clients.

Administration Taskes included User administration, Performance,Sendmail,weekly mksysb

Daily roles included dealing with LVM extensively. Strong hold of LVM.

Migrated AIX 5.3 with HACMP 5.1 to HACMP 5.2 (online).

Daily tasks included dealing with AIX side of SAN. Like troubleshooting Fiber card adapter, replacing Fiber card adapters. Configuring LUN’s back.

Setup of full networking services and protocols on AIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.

Dealing with user id deletion with removing entries from CRONTAB.

Performing Failovers in HACMP / cluster environment, monitoring servers

Installed and configured AIX 4.3, 5.0, 5.1 on RS-6000's, creating the root volume group application/backup volume groups, logical volumes, and filesystems (JFS) on RAID Level 5 with appropriate data stripping for protection, and for the optimal performance of the RS-6000 Servers within a High Availability system using DASD, DCE and DFS services.

Designed and configured ethernet VLAN’s with RS/6000 IBM Servers, Cisco Routers (2500/2600 series) and Cisco Switches (Catalyst 2912) utilizing RJ45 CAT5 cables for the internal LAN, and a T1 fiber uplink across a Cisco backbone for connection on the WAN.

Configured Work Load Management (WLM) for IBM Websphere Application Server.

The migration task from websphere application server 5.1to web sphere application server 6.x was taken up on stand alone systems.

Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.

Backing up AIX servers using mksysb and ADSM/TSM using IBM 3494 automatic tape libraries and recovering

Installed and configured Sudo for users to access the root privileges.

Installed application connectivity software to enable IBM print services. Configured and administered firewall rules, including the use of SNORT, NMAP to effectively monitor system files, port security, and network traffic activity coming through the firewall.

Administered Linux servers for several functions including managing Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production.

EDUCATION:

Triton College 2008 – 2010: Associate in Applied Computer Science

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