SUMMARY

• I am a professional with over 7 years of experience in installation, configuration and management of servers and services using GNU/Linux Debian, Fedora, CentOS and Ubuntu. Currently a natural self - learner who is Highly responsible, focused, always proactive also a team worker.

TECHNICAL SKILLS

• Microsoft Windows, Microsoft Office, Libre/Open Office
• Maintenance, assembly, repair and technical assistance of computer equipment laptops and PS 's
• Transmission, communication, structured cabling, wireless networks, Last mile, remote access point.
• Linux (Red Hat, Debian), client and server Windows versions since win95, OS X, macOS, Unix, including Solaris Sparc
• AWS (amazon Web Services)
• Bash
• GNU/Linux
• Firewall (iptables).
• Router y Gateway (route).
• DNS (Bind, NSD).
• Web server (Apache2, Nginx, gunicorn, npm).
• Mail server (Postfix) and Web-mail
• File server (NFS, Samba, Samba4).
• Database (MySQL, PostgreSQL, non-relational).
• Monitor Server (Nagios, New Relic, Dynatrace).
• Virtualization (OpenVZ, VirtualBox, Proxmox, KVM)
• LVM
• OPENLdap
• Dhcp Server
• VPN (OpenVPN, Tinc)
• Git
• Docker kubernetes

PROFESSIONAL EXPERIENCE

Confidential, Miami, FL

Linux System Administrator

Responsibilities:

• Heartbeat: This service runs across the Data Centers sharing IP resources, These resources must be aligned in the same DC for the correct functionality of the VOD system, if one of this is not in place it may cause disruption on the VOD service content, by flipping back the resources will bring back the service online.
• Apache or Httpd; We are using this service to cache chunks of the content streamed by Wowza so the client will be able to reproduce correctly the content if has stoped the reproduction will start showing the spinning circle, most of the cases with a simple power cycle of the service will fix the problem, in other cases, the cache gets corrupted so we may need to re-create the cache folder.
• Tomcat; The system runs CMS where the Content manager is able to update, add or remove content to be play on the endpoints. This service runs on port 80 if the service has stopped by checking the status of the process on the console ps -aux | grep tomcat and killing any zombie process then restarting the service will bring back the service on-line.
• Unison: The replication of the content is very important across Datacenters, in regards to the HA, in most of the cases this service fails because of the NFS mount, by checking the status $mount, making sure that this is not in read-only ro, By re-staging them to rw (Read and Write) the unison service will be back on track.
• HaProxy: We use Dynatrace to monitor all the services, so if we found a high load on any server we can check if HaProxy is load-balancing the load correctly on the servers, this service provides a web page with all the stats, on this we can track down any problem showing and when it starts to happen.
• Deployment of new version and fixes of the application, we ask for a maintenance window to the ship and start deploying the latest version, we upload the new package to the VOD system and unpack then we follow the documentation procedure by the end we need to reboot all the end-points TV’s we use Procentric for LG TV's by running a bash script with the list of IP's that we can do it remotely.
• Bash scripting; In order to improve the system we need to do some automation scripting, most of the time we use bash, in other we use python.
• Staging; if a new ship needs the VOD system we need to install the system in a new set of servers, we use Clonezilla for the images with the basic information and then following the documentation we procedure to deploy the characteristics based on the ship.

Confidential

Linux System Administrator

Responsibilities:

• Change, remove and add DNS (Bind9), Nginx records, we use git to changes records/configuration and deploy it on the server. Using CFEngine or Doit we ware able to deploy across the server making part of the project, also restart, stop and start the services.
• Service and installation of SSL certificates: Activating, renewing and dropping SSL certificatates for the many domanins that the company own, we use a private plataform to do all this and then we have to deploy this certificates on the Netscales.
• Jira, was our ticketing system in there we monitor the status of all inicdents, problems or change request.
• Monitoring: Nagios, lens, Prometheus, grafana; Because the enmviroment is so large and complex we need more than one monitoring system, so we can be aware of the status of all system and ahed to respond and troubleshoot in time.
• Netscales, This are load balancer/routers the servers or resources are attached to them so we change the configurationa by add, remove or modify the resoures assign to each project.
• Vmware, Dashboard console were we manage new VM for the project. The request will come as a new ticket in Jira with the specification and caracteristics of the new VM, our job was to deliver the new VM’s following the specification given.

Confidential - Miami, FL

IT Linux System Administrator

Responsibilities:

• Responsible for administering, supporting, troubleshooting and upgrading the following applications in a dedicated server environment; Apache, Postfix, MySQL, BIND, linux-VServer.
• Implementation of a software that involve 3 servers, Debian 8.71 using Apache 2.2 and PHP 5.6 as a backend in Symfony 3.07.
• Configured Application servers over Apache web server in Linux based systems
• Debain 8.71 as a frontend in Angular 2 and Nginx, For the Big data processing we use Ubuntu because the version 16.04 has the latest stable version of kernel, giving us a faster and more effective resolution of the problems.
• The retrieved information goes to a MYSQL server (RDS) all so connected to the software.
• The scripts have been written in Python, Perl, bash and Java.
• All the code are in Bitbucket, the deploy and update has been automatized with scripts code in python.
• All the servers are in AWS (amazon Web Services)
• Implementation web service monitoring with Nagios (CPU, Mem, Hard Disk, Ssh, Users, MYSQL, PSQL, PHP, Python, Perl, Ports)