Unix System Administration Jobs

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Fixed-Price - Intermediate ($$) - Est. Budget: $150 - Posted
Ok I have an ecommerce site, the front end is working fine but the back end (admin panel) or checkout pages (https) are erroring. I run centos 6, nginx, redis cache, php-fpm, maria db It was working fine until all orders stopped a few weeks ago. The only thing I can think of is that we recently added a new domain on there and changed the https dedicated IP address to use for the new domain, the guy who did it was positive that we nginx did not need a dedicated IP for https? I don't know if this is the cause but I need a very experienced sys admin who can easily find and sort the issue urgently please. You must have at least 10 prior feedbacks. thanks
Skills: Unix System Administration CentOS
Fixed-Price - Expert ($$$) - Est. Budget: $150 - Posted
I'd like to contact somebody who help me to implement a real time chat and help me with other system tasks. The idea is know each other to can work in multiple projects. The chat I like more is : https://github.com/dmitryweiner/secure-chat-nodejs But I accept more suggestions. I don't like you create an specific chat. No!! Don't reinvent the wheel. The develop I like es you help me to implement or optimize one of free software projects what already do this function. I'd like to suggest this site ( sorry is in Spanish - soon will be multi language ) but will tell you exactly my development idea. http://metodologiasagiles.com/articulo/a0004/revolucion_en_el_desarrollo_development_revolution Possible software to use it : - Node Js - Angular Js - React Js - MongoDb - Redis - Sphinx - Elasticsearch The idea is chat works in an static page with an option to integrate with Drupal or Magento. Chat must to have : 1. Multiple role to use it 2. Fully secured (SSL) with captcha login to avoid bot 3. Fast load in whatever html page 4. Of course based in free software project (never more wheels). Also you could continue working with me in a lot of other projects. Let to see chat experts. Budget is negotiable. I search expert person better than an specific project. I want real solutions. Regards. Ricardo.
Skills: Unix System Administration AngularJS Apache Solr Apache Cassandra
Fixed-Price - Entry Level ($) - Est. Budget: $75 - Posted
Essentially it will be configuring DD WRT to disconnect/dissociate/not let them connect in the first place automatically any client whose signal drops/or is below an administrator-defined threshold (eg. RF signal strength and or SNR). Having a few clients stuck on the first access point they see and not letting go is causing me a big problem. This is a large WDS spoke and wheel setup. I have examples of ubiquity scripts similar to what I'm looking for. I know there is other equipment out there that can easily manage this but I need to keep the ubiquity/ddwrt hardware in place. I will need to upload this script to about 15 access points.
Skills: Unix System Administration Computer Networking Linux System Administration Network Monitoring
Fixed-Price - Expert ($$$) - Est. Budget: $550 - Posted
Tune an apache solr installation to have instant search, or a sphinx setup or an elasasticsearch environment. -Apache Solr Version 5x -Sphinx and elasticsearch (latest) -CMS Drupal Product versions: 5x - 7x - 8x -Magento 1.9.3 - 2.1 You will see an already working solr environment. Your work is to tune to have instant search results. Server where you will work is one of fastest servers (256GB Ram - SSD - 40 cores ) Also you could continue working with me in a lot of other projects. Let to see Solr experts. Budget is negotiable. I search expert person better than an specific project. I want real solutions. I latest days I have know a lot of Solr. We have a complex queries, so solutions are : 1. Improve solrconfig.xml 2.Adjust parameters. 3.Enable and optimize cache. 4.Run Solr Directory in RAM 5.Create a multi instance environment with zookeeper. I search expert who really know how to tune a solr install or a sphinx install or a elasticsearch. Now I'm a little Solr expert. Regards. Ricardo.
Skills: Unix System Administration Apache Solr Drupal Elasticsearch
Fixed-Price - Entry Level ($) - Est. Budget: $30 - Posted
Hello, I have a VPS server (OVH) with Debian Linux and two registered IP addresses and some domains. I'm looking for someone to setup IP and domain rotation for outgoing connections. I may not be able to give you root access so you may have to do it via TeamViewer. You should be also able to test it and show that the server really is using both/more IP adresses and not just a single one.
Skills: Unix System Administration Debian OS Linux System Administration
Hourly - Expert ($$$) - Est. Time: 3 to 6 months, 30+ hrs/week - Posted
Role: We are searching for a developer with experience building horizontally scalable web applications to advise and assist in the creation of a React/Redux/AWS web application based on an existing software product with a strong user base. The role is a freelance or short-term (1099) contract position. Location: New York City Responsibilities: * Act as technical advisor with respect to web application/data architecture * Manage and maintain software integration and deployment * Develop performance and benchmarking test coverage * Help develop front-end web interface Requirements: * B.S. in computer science, engineering, or related * Highly proficient in cloud application/infrastructure management and deployment (AWS preferred) * Proficient in Unix administration, build and release management tools * Experience with Javascript frameworks (React, Redux preferred) * Experience with automated provisioning, Docker containers * Substantial work ethic and team-oriented personality Company: Tandent Vision Science is a small scientific research organization with innovative technology in computer vision and signal processing.
Skills: Unix System Administration Amazon Web Services Docker JavaScript
Fixed-Price - Intermediate ($$) - Est. Budget: $200 - Posted
Provide deployment automation work effort and subject matter expertise. Work with engineering teams to optimize application performance. Provide engineering teams with help desk support for questions about NoSQL development. Understand and employ best practices for high availability and scalability. Install, configure, and maintain NoSQL technologies and systems. Maintain documentation and troubleshooting playbooks. Respond to and resolve access and performance issues. Ability to work non-peak hours when needed. Assist in capacity planning. Proactively monitor performance. Maintain change control and testing processes for all modifications and deployments. Conduct research and make recommendations on NoSQL products, services, and standards.
Skills: Unix System Administration Elasticsearch Kibana logstash
Fixed-Price - Expert ($$$) - Est. Budget: $120 - Posted
A devops guru is needed to help configure a Laravel application in AWS. A MongoDB instance has been set up in EC2 and help is needed to create VPCs or security groups so that the application can speak to the MongoDB instance. Help is also needed to set up and configure Supervisord to support a Laravel queue running on the application server. The queue is currently connected to a database, but a connection to SQS is preferable. Supervisord should ideally be installed using .ebextensions configuration files. The ideal candidate must be well versed in each of the concepts and technologies described above. This is a short term activity expected to only last a couple hours, however more projects are expected to ensue subsequent to completion of this task.
Skills: Unix System Administration Amazon Web Services Laravel Framework MongoDB