SUMMARY

• Unix/Linux Systems Administrator with 8 plus years of national and international experience offering a solid work ethic and innate ability to work zealously in a team or solitary environment and wrap up responsibilities in a precise and timely manner.

TECHNICAL SKILLS

• Red Hat Enterprise Linux v5,6&7
• CentOS v6&7, Solaris v10
• Windows 2008, 2012 & 2016 enterprise servers
• VMware ESXi v5&6, VSphere Web Client.
• Kernel Patching with Red Hat Satellite server
• Linux KVM virtualization VMM
• Oracle virtual machine OVM
• Active Directory, Group Policy, LDAP, VAS tool
• Apache HTTP, apache Tomcat
• Splunk, Nagios, SolarWinds
• Red Hat Identity management server
• Webmin, HAproxy, NGINX, LAMP (Linux Apache MySQL PHP, Maria DB, Couch DB, Mongo DB), Tilda, Node.js.
• Virtual Image template, Vmotion and snapshots
• ISCSI, NetBackup, EMC SAN, NAS
• Veeam 9 Backup & Replication
• Disaster Recovery
• HPE ProLiant Gen 8,9 &10 DL 360 & DL 380, Dell PowerEdge R720, Cisco UCS
• Kickstart, Cobbler system ISO image creation.
• Configuration management Puppet and Chef
• Bastion Host, Jump Server, Powerbroker, Cloud
• SSH Keys - public and private - for secure connections, Public Key Infrastructure PKI.
• AWS Identity and Access Management (IAM)
• Bash Shell and python scripting
• Storage RAID configuration
• Experience on the regulatory requirements that impact the business lines (SOX, PCI)
• Incident Management, IT Change Management in Operations Center and ITIL processes

PROFESSIONAL EXPERIENCE

Unix/Linux Systems Administrator

Confidential

Responsibilities:

• Providing a high level of technical support to customers via the phone, Skype chat and ticketing system.
• Follows ITIL based practices for change management, incident management, problem management, configuration management.
• Planning, installing, configuring, supporting, and optimizing Windows and Open systems (UNIX and Linux).
• Servers build, HPE ProLiant Gen 8, 9 &10 DL360, DL380, Dell PowerEdge R720, Windows 2008, 2012 & 2016 enterprise servers, Cisco UCS and virtual machines.
• Cobbler ISO image creation, Virtual Machines Shell set-up, PXE kickstart boot, run-book automation.
• Troubleshooting Incidents, task tickets on Linux RHEL v5,6&7, Windows, Xen Servers, VMware ESXi v5&6 (Vcenter, Vsphere web client), HPE ProLiant ILO, Cisco CIMC, and Active Directory.
• Configuration of the BIND service so that it functions as a DNS caching name server only (non authoritative for any domain or zone).
• Troubleshooting DNS Client Issues.
• Troubleshooting of CPU, Memory, Disk/Files-System, Network Input/Output on Servers.
• Patching RHEL kernel using Red Hat Satellite servers v6 & v7. (push red hat OS security and bug-fix patches).
• Providing Tier 1 and Tier 2 troubleshooting support for patch related issues.
• Offline and Online file system expansion LVM, memory and CPU addition & hot add on Virtual Machines.
• Users and groups account management, password reset for customers and elevated access Sudo.
• Performing backup and recovery of servers using NetBackup and participating in disaster recovery tasks.
• Vendors Support processes follow-up.
• Experience with ticketing tool ServiceNow.
• Supporting multiple hardware platforms Cisco UCS, Dell, IBM and HP.
• Supporting multiple web servers Apache HTTP, Apache Tomcat, Load balancers NGINX and HAproxy.

Unix/Linux Systems Administrator

Confidential

Responsibilities:

• Provided high level of technical support to customers via the phone, chat and ticketing system.
• Installed VMware Vsphere Hypervisor, client software, virtual network setup, create iSCSi/ NFS storage pool, created and managed snapshots, host configuration changes, installed Vcenter servers, migrating systems using Vmotion from one physical host in the cluster to another.
• Centralized users account parameters via LDAP.
• Configuration of LACP by bundling multiple Gigabit Ethernet links into a single logical interface on Cisco routers.
• Installation, integration and management of webs servers, traffic management using Load balancers.
• Configuration of Network Interfaces NICs Bonding and Teaming to use in Linux servers.
• Installed and configured Local and Remote MariaDB clients, created Databases Schema, performed SQL queries against the Databases, backup and restored the Databases.
• Supported daily operations including monitoring, troubleshooting, capacity management, provisioning, hardware and software configuration, patching, upgrades and performance tuning.
• Installed and updated software packages from Red Hat Network, a remote repository or the Local file system using YUM, RPM, management and configuration of Local repository.
• Applying Red Hat Linux and 3rd party patches in the required compliance timelines.
• Provided Tier 1 and Tier 2 troubleshooting support for patch related issues.
• Troubleshoot Incidents, task tickets and perform Change Management on Linux RHEL v5,6&7, CentOS v6&7, Cisco UCS, HPC, Windows 2008, 2012 enterprise servers, Solaris v10, ILOM, ALOM, IDRAC, VROps, VMware ESXi v5&6 (Vcenter, vSphere web client), Powerbroker, Splunk and Active Directory.
• Setup KVM, installing virtualization packages, using virt-manager to install Centos 7 virtual guest, using virt-builder to create disk images, using snapshots for backup and recovery.
• Used bash shell scripting to schedule and automate processes including full and incremental backups using Rsync, tar, cpio file dump and cpio pass-through.
• Management of physical volumes, assigning physical volumes to volume groups, management of Logical volumes LVM on RHEL v5, v6&7, Centos v5&6.
• Supporting for backup and data recovery of servers, participation in disaster recovery exercises.

Unix/Linux Systems Administrator

Confidential

Responsibilities:

• Provided high level of technical support to customers via the phone, chat and ticketing system.
• Responsible for managing Operating Systems and Applications Support in the Data Center.
• Administration of Linux Red Hat v5&6, Centos v5&6, VMware ESXi v5.5, Windows 2008, 2012 and Solaris v10.
• Installed and configured HAproxy, NGINX, SSL for apache web server, create self-signed certificate.
• Installed NAS server, configuration and assigned the LUNs to a UNIX server, create a functional volume on the attached LUNs.
• Implementation and Troubleshooting of LACP (Link Aggregation Control Protocol).
• Involved in designing and configuration of IPSEC (Internet Protocol Security) encryption system.
• Configured, installed, & managed DHCP and DNS servers.
• Applied Red Hat Linux and 3rd party patches in the required compliance timelines.
• Provided Tier 1 troubleshooting support for patch related issues.
• Installation and updated software’s packages from Red Hat Network, a remote repository or the Local file system using YUM, RPM, managing and configuring Local repository, downloading the GPG key from the epel repository and configure our repository to use the epel GPG key.
• Archived, compressed, unpacked and uncompressed files using tar, gzip and bzip2.
• Management of passwords and adjust password aging for Local user’s accounts, set enforcing and permissive modes for SELinux, creation and management of ACL.
• Performed packages management using pkgadd, pkgutil in solaris and using RPM, YUM in Linux.
• Configured network cards and network services to automatically start at boot time.
• Management of systems time and configured the chronyd service to work with NTP.
• Installation and configuration of network scanning tools and Iptables (Nmap, Nessus) to scan the network ports of the servers.