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Linux System Administration Jobs

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Fixed-Price - Intermediate ($$) - Est. Budget: $2,500 - Posted
We have 30 servers (combination of operating systems, virtual and physical) that need to be replicated on periodic bases by server (hourly, daily, monthly) and spun up if needed. For this first phase, we do not care if the servers actually work as we are mostly concerned about the data being restored and the server spinning up. This would include a complete replication of the IP addresses each server currently has in the Amazon cloud as several of the services have hardcoded IP addresses in their scripts that run. A second phase (not part of this) will be to test the systems interactions. You MUST have experience and be able to explain how you will go about this and how it will be configured or monitored. This also includes doing informal quick training to our local admin to continue to maintain this system. Finally, it must include alerts in the event that a sync failed with retry logic.
Skills: Linux System Administration Amazon EC2 Amazon S3 Windows Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
I have a LAMP image hosted on Digital Ocean and need a few things done. The second phase of the LAMP tweaks are: 1. The best Cardav & Caldav installed on the server and accessible through my RoundCube installation. 2. Antivirus / Junk filter engine. 3. Install my ssl certificates (2) 4. Sieve type rules engine and how to create rules. Would be awesome if able to set rules in RoundCube or postfix admin.
Skills: Linux System Administration Antispam and Antivirus Postfix SMTP Server SSL
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
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
You will be responsible for the security and stability of a cluster of Amazon EC2-hosted Debian Wheezy virtual servers, running a variety of services (Percona/MySQL, PHP web applications, message queues, Varnish caches, etc). You will be responsible for provisioning new servers when required, managing and testing backups, security status and software updates, etc. You will also be managing disk images and working with a programmer for automatic elastic scaling of at least one internal system. This is an immediate and on-going contractor position at SBAT Ltd reporting to the Technical Director. Initial tasks could include * Audit existing servers (approx 5) for security/performance/improvements * Setting up backups and testing them * Talk to project stakeholders to identify needs and desires * Configuring Amazon CloudWatch (or monit/munin) with alerts * Configuring an external monitoring system for public-facing systems (Pingdom?) * Provisioning new servers as-and-when * Provisioning development/test servers/clusters for developers as-and-when Ongoing tasks could include * Security and monitoring checks * Backup checks * Scaling the cluster to meet public demand * Scaling the cluster to meet data processing demand * … feedback from you needed here too! About us We are a football/soccer data company providing statistics and news for sportsbook betting. The majority of systems in the cluster are in place to support our primary website and mobile app. Spin-off web and mobile app projects are managed in-house and pull sports data from the cluster. The cluster is almost ready to go. We have identified some bottlenecks and problems with the architecture, and are now hiring several new technicians to re-architect and tweak areas of the cluster ready to release a new website version. In the future we need to maintain this cluster while scaling to serve increased visitors, as well as add systems to manage data from other sports (cricket, darts, boxing, motorsport, etc). About you We need motivated individuals who love what they do and are competent and confident in their abilities. You will be working alongside other contractors and an in-house project manager to achieve these goals. Good written English skills is essential, with a desire to communicate often. This is a complex project with many variables and many team members. JIRA is used for project management and Slack is used for communication. Required skills and experience * Linux server administration and security, particularly Debian or similar * AWS EC2, security groups, IAM users, policies * Disk imaging, spinning up new servers from images * Web server administration (nginx configuration, PHP-FPM configuration, Percona/MySQL basics) * Advanced web server administration (Varnish, Symfony application requirements) * Installing and basic testing of devops tools (git, composer, bower, grunt/gulp, etc)
Skills: Linux System Administration Amazon EC2 Debian OS Nginx
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
Hello to everyone, I would like to build a tablet specifically for blender and his plugins. So it should have the better hardware and software components with which blender can run very well. I'm thinking about a good screen,a slim single bord computer and so on. I see that all around there are a lot of System On Chip boards,most of all aren't so expensive,but I haven't found the one that's also slim. Usually the usb controller integrates with the board is very big and this is not good for my purpose because I want to create a slim tablet. So,I ask help to you for the following things : 1) I want to know which kind of hardware components I can buy,regarding the SOC,battery,screen,etc,and you should be within a maximum budget of 500 Euros 2) which operatyng system Is better to run Blender and his plugins. I know what Android can't run very well the Open GL,infact there is only and old version of blender for Android. Linux for sure,but which version ? I would like to create a specific linux distro to use exclusively with blender. give me some suggestion in this area 3) when point 1 and 2 are satisfied,I need to have the digital design file to send to a 3D farm because I need they make the enclosure. So we will keep in contact because I will take the measurements of the hardware components so that you can make the digital design file. Let me know if you are interested to this project. very thanks.
Skills: Linux System Administration 3D Printing Blender3D Digital Electronics
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, 30+ hrs/week - Posted
I need some one who can install and manage this system in CentOS. I have a couple of servers that I need install and manage this system. You must be and expert in all aspects of Asterisk and Vicidial, FreePBX. I don't know which system I have to use. 1. Please suggest me which system should be used. 2. Please answer the following questions: - Advantage and disadvantages of suggested system. - Do you have detail document to install and configure of the system on CentOS? If you send it to me, then I will hire you immediately. if you don't have it, then you do not apply this job. - total time and your price. This job will proceed with on going for management of this system.
Skills: Linux System Administration A2Billing Asterisk CentOS
Fixed-Price - Expert ($$$) - Est. Budget: $150 - Posted
description - i have a website running on mean stack .and it is hosted on digital ocean .i.e a linux server and suddenly it stops working due to heavy traffic .i recieved this mail from there support "We are sorry to report that we have detected what appears to be a large flood of traffic from one or more of your servers that is disrupting the normal traffic flow for other users. To prevent this traffic from causing further disruption, we have disabled the networking interface on the server or servers involved. Please take action at your earliest convenience in order to investigate and resolve the situation. Once this is done, if you determine the program was malicious, please also determine how this software came to be installed on your droplet and prevent it from being installed again in the future. As soon as this is done let us know and we will investigate re-enabling your networking." . help me solve this issue. its quite urgent .
Skills: Linux System Administration Node.js
Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I need a Vagrant box to be setup. phpbrew or puppet would be advisable in order to manage different versions of php and packages. The box should have the following settings: - CentOS 6.7 - Apache - Different versions of PHP to be used with phpbrew including PHP 5.4.45 - MySQL 5 - PhpMyAdmin The settings for Apache and PHP will be stored in files which are stored in the Vagrant folder (symlink necessary so that the server can read the files). The box should be able to load a provision file which will set the various Apache/PHP/MySQL configurations and create a /var/www symlink into the /vagrant directory.
Skills: Linux System Administration Apache administration CentOS MySQL Administration
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