System Administrator Customer Support
Resume:
Zohidjon Abduholikov
Cell phone: 415-***-**** e-mail: ************@*****.***
PROFESSIONAL SUMMARY
System Administration and Server Virtualization, worked closely with development, storage, quality assurance, database, networking and customer support teams to meet business and technical demands Manual installation of Linux servers as well as using automation. Day to day user administration and management. Upgrading and patching of OS using yum, rpm, Red Hat Subscription Manager and Red Hat Satellite. Vast experience in configuration of APACHE, SMTP, and NAGIOS. Performance tuning and troubleshooting in Linux systems using commands such as top, free, swap, tcpdump, telnet, and netstat. Knowledge of files system management using NFS, SAMBA, FTP, and LVM. Hand on experience of DNS, TCP/IP networking services, firewalls, iptables, SELinux and NAS. TECHNICAL SKILLS:
Operating System: Red Hat Enterprise, CentOS, Fedora, Ubuntu, Amazon Linux Virtualization: VMware - ESX, ESXi, Virtual Box
Hardware: x86 hardware ranging from Dell, HP, SAN hardware mostly from EMC and Dell. Fiber cabling, Emulex & QLogic HBAs along with PowerPath. NetApp7, Pure and Nimble Storage
EXPERIENCE
Dirilis Soft – Chicago, IL November, 2021 – Present Linux System Administrator (24x7 On-call Support)
● Installing, configuring physical and virtual Linux, Amazon Linux servers, Terraform and Red Hat Satellite
● Troubleshooting hardware and replacement of failed components of Dell physical servers and firmware update.
● Building, configuring and updating VMware ESXi hosts
● Building physical and virtual servers on Linux and VMware using Kickstart, Red Hat Satellite, Amazon Linux
● Leading deployment role for Red Hat Enterprise Linux 6,7. Integration Linux servers with Active Directory using native SSSD.
● Experience managing AWS Cloud environment
● Advanced knowledge of VMware’s virtualization topology including VCenter, ESXi Servers, HA, DRS and VMotion
● Managing and monitoring servers using Icinga.
● Installing and renewing expired SSL certificates using Global Sign
● Performing the daily system administration tasks using Jira
● Administration of DNS using Infoblox
● Configuring the LVM (Logical Volume Manager) and managing the volumes.
● Decommission the product and non-product Linux and Windows servers
● Monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues
Liaison Technlologies – Alpharetta, GA April, 2016 – October 2021 Infrastructure Engineer (24x7 On-call Support)
● Responsible for supporting Linux servers for production, development, and testing.
● Built physical and virtual Linux servers on VMware using Kickstart and Red Hat Satellite
● Was responsible for installation, configuration and administration of Red Hat Enterprise Linux on x86 architecture.
● Working closely with the DBA team to build Database Clusters using Ansible. ASM and Multipathing configurations. Installation of Oracle 11g on Linux environment.
● Participated in a Data Center migration project. Was responsible for migration from Solaris to Linux, physical and virtual servers migration.
● Patching of RHEL 6 Linux servers during outage in production boxes.
● Extensively used F5 LTM load balancer. Created nodes, pools, and VIPs
● Managed and monitored servers using Zabbix.
● Was responsible for physical servers firmware update. Dell, HP, Cisco UCS
● Work closely with Red Hat Satellite Server. Keeping the server with the latest patches.
● Worked closely with the Security team to clear vulnerabilities.
● Used Ansible to automate tasks. Wrote and implemented playbooks.
● Integrated Red Hat Enterprise Linux servers with Active Directory.
● Installed and renewed expired SSL certificate
● Administered storage using NetApp and EMC.
● Configured Linux and Splunk universal forwarder to receive syslog messages. Bare Escentuals, Inc - San Francisco, CA August, 2014 – March, 2016 Linux Systems Administrator (24x7 On-call Support)
● Red Hat Enterprise Linux 6 Integration with Active Directory.
● Lead deployment role for migration of Nagios from physical environment to virtual, and from version 3 to 4. Further administration and monitoring of Nagios server.
● Created and cloned Linux Virtual Machines, templates using VMware 5 and migrating servers between ESX hosts. Implement and maintain ESX host clusters and security.
● Strong skills in managing Red Hat Linux servers, SAN Storage (EMC), Virtualization. (VMware, Red Hat Enterprise virtualization preferred), and system security.
● Installed and patched using yum and Red Hat Subscription-Manager.
● Supported NetBackup Administration.
● Administration of NetApp NAS cluster, NetApp and Nimble storage management – snapmirror, snapvault, snapshots, SMVI, migration, aggregate, volume and disks. Aligned the misaligned vmdks.
Connect Media Venture, Chicago, IL Aug, 2013 – June, 2014 Linux System Administrator (24x7 On-call Support)
● Evaluated performance of systems to see that they meet business needs.
● Designed an automated strategy to deploy RHEL Linux servers from bare metal and in a virtual environment
● Experience in installing local and remote YUM servers on Linux servers
● Wrote technical documents on standard operating procedures (naming conventions, best practices, install procedures)
● Installed, upgraded and maintained Linux operating systems. LOMIX CO., Chicago, IL Jan, 2012 – Aug, 2013
Linux System Administrator
● Performed standard system administration tasks, such as patching software and hardware upgrades, troubleshooting and problem resolution
● Red Hat Linux kickstart Installation
● Created status reports, project plans and attend team meetings to coordinate activities
● Worked with the network, storage, and dev teams to prepare and configure new servers for the Prod, QA and Dev environments
EDUCATION
Tashkent State Academy Bachelor of Business Administration Jul, 2005 CERTIFICATON
Red Hat Certified System Administrator (RHCSA)
REFERENCES ARE AVAILABLE UPON REQUEST
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