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Linux System Administration Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 month, 30+ hrs/week - Posted
Description -------------- We are looking for an experienced DevOps engineer who can implement the deployment and configuration of HA environments for our application in AWS. After setting up the infrastructure and deploying the application, we should be able to test the environment for applicaiton readiness. We should also be able to configure the monitoring - Server, Log and write scripts to test the environment and application health. Requirements ----------------- - Setup HA environment on AWS - Use Ansible to setup/configure infrastructure and application requirements - Setup Server and log monitoring - Create basic health checks and on going infra health checks Qualifications ----------------- 8+ years of relevant experience Extensive experience in designing, configuring, and delivering large scale application technical infrastructure. Experience and knowledge applying best practices to build secure platforms Experience with tools such as Docker and Docker based deployments is a plus Experience with Ansible in production environments with many nodes Strong scripting skills, i.e., Powershell, Python, Bash, Ruby, Perl, etc. Knowledge of IP networking, VPN's, DNS, load balancing and firewall Familiarity with any monitoring tools like Sensu, Nagios etc. Strong communication skills and ability to articulate complex solutions well
Skills: Linux System Administration Amazon EC2 Amazon Web Services DevOps
Hourly - Expert ($$$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
I run two popular on-line digital download websites (soon expanding to 4) and a small company website. All my sites are hosted on a dedicated server with a reliable and fast network infrastructure behind them. Generally speaking all the sites are fast and customers aren't facing any problems, but I feel with the growing traffic, performance could be increased. My main site is custom built using PHP/MySQL with no existing framework, everything was coded in a secure and optimized fashion and is the back bone of my business. However, I am soon going to migrating everything across to a new WordPress based solution (which has more features and is better suited for our business) to match my other sites (already built on WordPress). I am looking for the following: - Someone who can find any bottle necks in site/server performance and help me solve them. - Someone who can FULLY optimize the dedicated server to perform best on all sites, be it optimizing PHP config, MySQL and other services. This might include rebuilding the server and installing only the best Apache/PHP modules, etc. - Someone who can install Engintron (a NGINX reverse-proxy) and verify everything works as intended. I had prior issues with it and had to uninstall. - Someone who can harden the server using WHM/cPanel/terminal and configure CSF and mod_security to mitigate as many attacks as possible. - Someone who is willing to spend an hour or two on a Skype call, giving some consultation/advice and answering any questions I have in relation to the server, set-up and optimization performed. - Site/server recommendations you feel would benefit us as a business and our expansion. - Knowledge of CloudFlare and server side caching. I have limited Linux sysadmin experience, but relatively good knowledge of WHM/cPanel and basic terminal/shell commands. If we establish a good working relationship, I believe this will be an on-going project where I will evoke your services every few months to help improve the server config.
Skills: Linux System Administration Apache administration CentOS CPanel
Fixed-Price - Expert ($$$) - Est. Budget: $400 - Posted
Hello, We've got a corrupted disk on a linux Ubuntu 10.04 Server with Zimbra ZCS. Error on boot : "the disk drive...is not ready yet or not present" lvm> pvscan Couldn't find device with uuid 'xxxx-xxxx-xxxx-xxxx-xxxx'. We would like to fix the partition and get the data back. We're looking for a linux expert. We did remount the partition with kpartx but all old emails are corrupted.
Skills: Linux System Administration Ubuntu Zimbra Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $1,000 - Posted
We have a web based PHP program that we need redesigned and additional features added. We have an operating system which is web-based for clients to input vehicle data and information and store events for each vehicle. Each vehicle has associated with it a unique stock number and stores data and track events and be accessible via secured login. Programmer must be knowledgeable with older "LAMP Stack" programming. We have various reports need to be re-programmed to collect data and output to excel or similar html. Several functions need to be added or reworked. The system is currently working and we have the code. This system was built more than five years ago. The programmer will be expected to copy the code and current program to a test database that we can work with to make changes before programming our live database. Type of application development required: LAMP stack (Linux, Apache, MySQL, PHP) Integration requirements: Standalone Application Purpose or functionality of application: Inventory program that allows us to create stock numbers for each vehicle. Reports are created, checks are created - .pdf, dates and other relevant information are documented. Platform(s) desired for application: Windows, Linux Graphical User Interface requirements: Not Sure Application to run over network: Yes
Skills: Linux System Administration Apache CXF MySQL Programming PHP
Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Hi! I am having trouble with the configuration of R in Ubuntu 15.10 (does not locate RJDBC library). I need someone to configure it correctly in my local computer and enable remote connection with WRDS. If successful, I am interested in future jobs related to R and Mysql.
Skills: Linux System Administration R Ubuntu
Fixed-Price - Expert ($$$) - Est. Budget: $200 - Posted
I need to create a new Elastix PBX. Now I have one in my private server and i want to change to Digital Ocean, linux server. I use tree number, 1 for Mexico, 1 for Colombia and 1 for Perú. The number works with redvoiss. http://www.redvoiss.com/ I have a queue for each country (México, Colombia y Perú) and queue for each annexes. also, I need advise, with how can we protege the PBX from hacking.
Skills: Linux System Administration Asterisk Elastix
Fixed-Price - Intermediate ($$) - Est. Budget: $2,500 - Posted
We have 30 servers (combination of operating systems, virtual and physical) that need to be replicated on periodic bases by server (hourly, daily, monthly) and spun up if needed. For this first phase, we do not care if the servers actually work as we are mostly concerned about the data being restored and the server spinning up. This would include a complete replication of the IP addresses each server currently has in the Amazon cloud as several of the services have hardcoded IP addresses in their scripts that run. A second phase (not part of this) will be to test the systems interactions. You MUST have experience and be able to explain how you will go about this and how it will be configured or monitored. This also includes doing informal quick training to our local admin to continue to maintain this system. Finally, it must include alerts in the event that a sync failed with retry logic.
Skills: Linux System Administration Amazon EC2 Amazon S3 Windows Administration
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
EuroDomenii is a drupal shop https://www.drupal.org/u/drupa1ish, managing our own RedHat/Centos servers. We have medium SysAdmin skills, but for certain tasks, we need supervision and consultancy from freelancer, via Skype remote share screens ( only us run commands as root). For startup, setting up a new server involves more hours( with special skills below) , afterwards maintenance per request. SKILLS - general RedHat 6 expertise - managing partition over 2TB - ssd discard issues - lvm know-how - custom scripting P.S. During Skype communication, always use next attachment :)
Skills: Linux System Administration Red Hat Administration Red Hat Certified Engineer (RHCE) Red Hat Enterprise Linux (RHEL)
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I have a cloud based e-commerce server that is bogging down and becoming unresponsive under moderate traffic. I need to determine the correct resource requirements (RAM and CPU), verify Apache configuration and receive recommendations about scaling. The site runs Joomla and receives 200 to 800 visits per day. I would like load test the system immediately.
Skills: Linux System Administration Joomla! Apache Maven
Hourly - Entry Level ($) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
We need a great all round System admin to join our crew. You should be super proficient with System Admin on CentOS and MySQL and be proactive and have a passion for keeping servers running tight and well. Duties would include: - Server Updates - Security checks and holes plugged - DNS admin - MySQL backups and optimization (Some DBs use Sphinx) - Setting up and maintining SSH accounts - Server optimisation of memory, disk space etc - Setting up and maintaining Vz partions on the servers We operate 5 Servers across 2 ISPs all CentOS. The candidate after trial would be offer a retainer (guaranteed min number of hours a week).
Skills: Linux System Administration CentOS DNS MySQL Administration
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