Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Adebayo Adeyemo

Fort Worth,TX

Summary

Detailed oriented System Administrator with over 14 years successfully managing production environments with diverse distros and multi-site installations in Linux and Solaris. Proficient at streamlining all scales of system architecture, from single terminal multi networked servers. Expert at maintaining smooth operation of Linux and Solaris based hardware installations with dynamic performance in environments relying upon diverse operating systems. I have ability to multi-task and handle multiple projects simutaneously.

Overview

14
14
years of professional experience
1
1
Certification

Work History

Sr. Solaris/Linux Systems Administrator/Engineer

American CyberSystems (Innova) – Wipro Contract
07.2019 - 09.2023
  • Maintained smooth operation of multi-user computer systems running redhat linux, oracle linux, solaris, CentOS of different version and release.
  • Managed and support host infrastructures in both on-premise physical server like IBM (NMCLI) servers, Oracle servers (ILOM/LOM), Dell servers (iDRAc) and private cloud infrastructures like Oracle private cloud (OPC).
  • Support and managed production and development virtualiazed systems running on virtual environements like VMware ESXi host, HyperV and Oracle VM servers, and Oracle super clusters.
  • System design and server build with storage layout for DB,SAP and other business infrastructure requirements
  • Migration of servers from old Sun infrastructures (M500, M800, T4 to M8 sparc servers)
  • Migration of user data from one storage to another with little or no down time
  • Migration of application from physical platform to virtual environment using lift and shift method
  • Migration of application from lower OS version to higher compatible OS version
  • Ensure system security policies, functional procedures follow industry standard requirements and compliance
  • Documentation of SOPs and transfer of knowledge to my team members
  • Timely patching/update and remediation of Linux environment using Jetpatch & Redhat satellite server
  • Timely SSL/TLS certificate renewal across the internet facing platforms to avoid hacking and failure
  • Provide support to DBA and Application Developer team 24/7 using ServiceNow ticketing tools
  • Configure openssl (SSL/TLS) to setup secure encryption keys and authentication between hosts
  • Support Application and Database Team and developing Unix bash scripting for file transfer and job schedule
  • Migration of oracle databases running on solaris 10 (VCS/VxFS) from one storage to another non-disruptively
  • On project to migrate some database and application running Solaris 8, 9 and 10 to Solaris 11 on OVM Sparc server
  • VM Linux Database Server Storage migration from EMC Unity SAN/NAS to XtremIO storage without downtime
  • Performance tuning performance review on Solaris 10, 11 and Redhat Linux servers
  • Linux flavors conversion (Oracle linux to RHel, CentOS to RHel) using convert2rhel tools
  • Attend to tickets (Incident and request) and change management using service now (Snow)
  • Systems monitoring using all enterprise available options including Sar, Splunk and Nagios
  • Analysis Unix systems capacity and performance metrics and rebalance the resources requirement
  • Oracle ASM disks implementation for oracle database on both Linux and Solaris servers
  • Deployment of change and configuration management using ansible playbook for automation
  • Using OVM/Linux Virtualization Manager to manage resource (disk, CPU and memory allocation) to vm servers.
  • Resolved vulnerabilities by making improvements to systems and network security.

Sr. Solaris/Linux Systems Engineer/Administrator

CWG-Wipro – MTN Telecommunication Support
12.2017 - 10.2018
  • Managed and support over 1000 Linux flavors (Redhat 6,7&8, CentOS, Oracle Linux 6,7,8) on both physical and VMWare virtualized and AWS platform and provide support to DBA & Application Developer team on 24/7 basis.
  • Managed and support over 1500 Solaris 10 and Solaris 11 on both physical and VM/OLVM (Sparc & x86) serves and provide support to DBA and Application Developer team on 24/7 basis.
  • Database and Application migration from M5000 & M9000 Sparc servers to M6-32 Sparc server on OVM manager
  • Automated and deployed configuration and across Linux and Solaris platform using fabric and automated script.
  • Maintained all Unix infrastructures’ patches and firmware are up to date and secure from vulnerabilities.
  • Support sustained resiliency, disaster recovery and high availability events.
  • Installation of new infrastructures (Racks, Servers, Storage, Network devices, Power and Cooling equipment)
  • Collaborate and communicate effectively with peers in IT (DBA, Application and Network team) and other departments to resolve issue during incidents and to improve performance.
  • Working knowledge of BMC Remedy and ManageEngine to provide service support to tickets.
  • Automated many repetitive tasks and jobs using unix scripts, crontab and Control-M.
  • Software upgrade of Splunk, Veritas Infoscale, bigfix, eracent, crowdstrike, etc.
  • Setup of host-based firewall rules for DMZ and DNS bind servers using firewalld and SELinux tool.
  • Assist Team Lead to carry out some of his responsibilities and relieved him when on vacation or special duty.
  • ITIL practices in Service Management for ticketing, Incident, Problem, and Change Management using Remedy.
  • Evaluate the existing operating procedures and provide improvement and recommendations to all SOP.
  • Work in a team environment to provide rotating 24/7 L2 and L3 support of the Unix and Linux servers infrastructure.
  • Ensure that all alerts and detected problems are promptly reported, action is initiated, status is tracked, and resolution is achieved without introducing additional issues or risk.
  • System clustering using veritas and Solaris cluster and disk management using VxFS, VxVM, and VxCFS,
  • Ensure Linux and Solaris systems are adequately hardening to meet security and audit requirements.
  • Debug and review logs and troubleshooting performance issues on multi-hosted, physical, and virtual platforms.
  • Installed, configured, and managed Veritas Volume Manager for storage manager and Cluster Service software for system clustering; and carried out necessary Unix audit remediation, security patch update and Solaris patch.
  • Monitor and analyze system performance and manage resources using EMS, Grafana, Sabbix, Plunk and Nagios.
  • Write bash shell and python scripts to provide automation and system administration tasks support.
  • Detect, isolate, timely report, and resolve system outages, or problems encountered during operations which includes the collections of diagnostic data, restoring the system operation, development of workarounds, and other activities necessary for recovery of a system.
  • Working through incident root cause analysis RCA to put together remediation plans for the global environment to prevent reoccurrence of the same issue.
  • Support user access control and privilege on remote repository infrastructure services using LDAP, ACL and RBAC.

Unix/Linux Systems and Storage Administrator

Union Bank Plc
05.2009 - 12.2017
  • Resolved issues and escalated problems with knowledgeable support and quality service.
  • Diagnosed and resolved hardware and software issues.
  • Planned and implemented upgrades to system hardware and software.
  • Monitored networks and network devices to resolve technical problems quickly.
  • Ensured full delivery of reliable, high availability and high-performance environment across both storage (Oracle ZFS, NetApp) and compute nodes (Oracle Supercluster, E25k, E15K, T5-8, T4-4, X-Series x86 servers, etc.)
  • Provide 24/7 first and second level (L1 and L2) support to all Unix (Solaris and Linux) application and database.
  • Managed NetApp SAN, ZFS NAS and brief Hitachi storage environment includes storage provision, performance tuning, data movement and replication, troubleshooting and resolution of problems in the environment.
  • Keep servers up to date by upgrading them with the latest version of OS and patches.
  • Managed Linux and Solaris filesystem for high availability using veritas filesystem, cluster, and volume manager.
  • Monitoring of infrastructures using SolarWind, ManageEngine, Oracle Enterprise Manager, SCOM and Nagios.
  • Ensure up to date data replication to disaster recovery site to prevent data loss in case of disaster.
  • Administer daily oracle database and weekly application backup using Oracle secure backup and ZFS snapshot.
  • Managed and Support NetApp and Oracle ZFS storage infrastructures on both production & disaster recovery site.
  • Collaborate and communicate effectively with peers in IT (DBA, Application and Network team) and other departments to resolve issue during incidents and to improve performance.
  • Production compute node migration from E25k domain to OVM T4-1b, T5-2 and T5-8 sparc server with NetApp.
  • Zones migration from OVM T5-2 sparc standalone server to Oracle SuperCluster T5-8 Sparc server.
  • Discussed necessary change required with the IT head and present same to the Change management for approval.
  • Design and implement infrastructure solutions to meet business and technical objectives requirements.
  • Provide input and recommendations on new potential technology solutions based on research and analysis.
  • Monitor issue resolutions and collaborate with the application and database team to resolve and apply fixes.
  • Support deployment of the banking application FCUBS, Apache, middleware, EBS, SOA BPEL, WebLogic etc.
  • Carry out preventive and corrective maintenance of all infrastructures and maintain routine fire alarm test.
  • Follow ITIL practices in Service Management for Incident, Problem, and Change Management using ManageEngine ticketing and reporting tools.
  • Maintained SOP and policy documentations and present change request to Change Management.
  • Liaised with support partners and OEM to analyze and resolve 3rd and 4th level support issues.

Education

Master of Science - Cyber Security And Information Assurance (MCSIA)

Western Governors University (WGU)
USA
08.2023

Bachelor of Science - Computer Engineering

Ladoke Akintola University of Technology
Nigeria
11.2006

Skills

  • Linux OS administration (Redhat, Oracle linux and CentOS)
  • Solaris OS sparc and x86 platforms(8,9,10 and 11)
  • Deployment of cloud-based infrastructures servers and storages like (EC2, S3, EBS) on AWS
  • Automation with Ansible and Bash shell
  • Storage Administration (NetApp and ZFS)
  • BCP/DRP implementation and evaluation with compliance and industry standard like (HIPAA, SSAE-18, SOC, PCI-DSS and ISO 27001) requirement
  • System Monitoring & Collaboration tools like ManageEngine, BMC Remedy, Nagios, Oracle Enterprise Manager (OEM), Service Now, Splunk, SolarWinds, SNMP, SCOM, Grafana, Zabbix
  • Configuration, Provisioning and Management tools such as Kickstart, OVM, Automated Installer (AI), Fabric, Ansible
  • System Security, Audit and Remediation using Compliance guidelines – HIPAA, PCI-DSS, STIG, CISCat tools
  • Containerization and Orchestration – Improving level in Docker and Kubernetes
  • Application servers like Apache, weblogic, SOA etc configuration and troubleshooting
  • Hardware Support Knowledge - E25k, T4, T5-8, T6320, M6, M5000, M9000 sparc servers
  • Performance Tuning and system resources optimization
  • Vulnerabilities and Bug Fixes to avert security breach and attack
  • Data Backups & Recovery - OSB, NetApp dump & snapvault, NetBackup, NDMP, tar, cpio, ufsdump, rsync, dd, cloning
  • Virtualization and Cloud – AWS (EC2, S3, EBS), EXSi VMWare, Hyper-V, Oracle LVM (Sparc & x86), VirtualBox, Oracle Private Cloud Appliance
  • Storage Networking Protocols and Services – FC, iSCSI, Samba, NFS, CIFS, ASM for oracle database
  • File System and Disk Volume Management – NFS, VxFS, ZFS, LVM, VxVM, GFS, BTRFS, ext3/4, XFS
  • Standards Practice and Risk Management – ITIL/ITSM, COBIT Framework
  • Switch and Segmentation – Brocade, InfiniBand, VLAN, VNIC, LACP, IPMP, Trucking, Bonding
  • Troubleshooting – Sar, top, tcpdump, snoop, strace, vmstat, iostat, free, grep, netstat, awk, iostat, lsof, proc, cat

Certification

  • RHCSA - RedHat Certified System Administartor
  • OCP - Oracle Solaris 11 Certified Professional
  • OCA - Oracle Solaris 10/11 Certified Associate
  • VCP - Veritas Certified Specialist (Infoscale Availability)
  • CEH - Certified Ethical Harker
  • ISC2- CC - Certified in CyberSecurity
  • COBIT 5 Foundation Certified
  • ITIL V3 Certified
  • OSNA - Oracle Solaris Network Administrator
  • NSNA - NetApp Storage Networking Administrator

Timeline

Sr. Solaris/Linux Systems Administrator/Engineer

American CyberSystems (Innova) – Wipro Contract
07.2019 - 09.2023

Sr. Solaris/Linux Systems Engineer/Administrator

CWG-Wipro – MTN Telecommunication Support
12.2017 - 10.2018

Unix/Linux Systems and Storage Administrator

Union Bank Plc
05.2009 - 12.2017

Master of Science - Cyber Security And Information Assurance (MCSIA)

Western Governors University (WGU)

Bachelor of Science - Computer Engineering

Ladoke Akintola University of Technology

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Adebayo Adeyemo