Linux System Administration Freelance Jobs

We are looking for a skilled freelancer with experience in AWS EC2 and Plesk to set up an autoscaling environment for hosting unlimited domains. You must have a 16v Lightsail account with a Plesk unlimited account to facilitate this process. The project involves configuring the EC2 instance with Plesk installed to ensure efficient performance and scalability. If you have a strong background in cloud computing and Plesk management, we’d love to hear from you!

Skills: Linux System Administration, Apache HTTP Server, System Administration, Ubuntu, Network Administration

We are seeking a skilled Cloud Networking Specialist with prior experience in Megaport and cloud networking services for an ISP offering. The ideal candidate will play a crucial role in optimizing our network infrastructure and ensuring seamless connectivity. Your expertise in implementing and managing cloud solutions will directly impact our service delivery and customer satisfaction. If you have a passion for networking and a proven track record with Megaport, we invite you to apply and help us enhance our offerings.

Skills: Network Administration, Network Security, Linux System Administration, System Administration, VPN

I am seeking an experienced professional to assist in setting up a SailPoint testing environment on my local PC. The ideal candidate should have real-time experience with SailPoint configurations and be able to guide me through the setup process. Your expertise will be crucial in ensuring a smooth installation and troubleshooting any issues that may arise. If you have a strong background in SailPoint and are comfortable working in a home-based setting, please apply.

Skills: Linux System Administration, Microsoft Azure, Network Security, Deployment Automation, VPN

We are looking for a skilled Systems Engineer to join our team in a fast-paced ISP environment. The ideal candidate will be responsible for designing, optimizing, and maintaining systems that drive growth and efficiency. You should have a solid understanding of networking and system architecture. If you thrive in an innovative atmosphere and are eager to contribute to our success, we would love to hear from you.

Skills: Network Administration, System Administration, Linux System Administration, Linux, Windows Server

I need someone that is capable in PLESK/UBUNTU/LINUX/APACHE servers.

(I'm having issues with php configuration and memory settings.)

Also need someone that can use vi to edit files.

The issues are impacting our Wordpress sites

Must be very familiar with PHP config on server, and PLESK.

Skills: Apache HTTP Server, Linux System Administration, Virtual Private Server, Plesk

We are seeking a skilled server-side developer with expertise in Ubuntu and Nginx to review and optimize our VPS configuration. The ideal candidate will have a strong background in server management and be able to troubleshoot issues effectively. Your primary task will be to ensure our server is running optimally and securely. If you are passionate about server-side technologies and have a knack for improving performance, we would love to hear from you!

Skills: PHP, Linux System Administration, NGINX, MySQL, Amazon Web Services

Looking for help with repairing an existing Authentik service that is running on Kubernetes on Linode. I'm also hoping to have some help with learning how to backup the infrastructure and restore it when necessary.

Skills: Python, Bash, Ansible, Packer, Flask, Amazon Web Services, Linux System Administration, Terraform, GitHub, Kubernetes, HashiCorp Vault, Django, Docker, Jenkins, Google Cloud Platform

We are looking for an AWS hosting expert to assist in setting up and optimizing our cloud infrastructure. The ideal candidate will have extensive experience with AWS services and will help us ensure high availability, security, and scalability of our applications.

Responsibilities include:
- Understanding our needs
- Advising on best practices in relation to S3, EC2, Logs, IAM
- Hands on support where needed

Skills: Amazon Web Services, Amazon EC2, Linux System Administration, WordPress, DevOps

A pretty simple endeavor for someone who knows how to set up web servers. I have a liquidweb vps, looking to get my website, email, fpt and have it configured correctly with a way to administrate with vestacp or other free backend panel for linux. System uses almalinux.

Skills: Apache HTTP Server, Linux System Administration, SSL

we have 5 windows API servers which send http and SSL based outgoing API requests to 80+ Suppliers. we recieve 60 million requests daily and for evey single request we send about 50-80 http/ssl requests out to suppliers.
our suppliers mostly have timeouts, slowness, which we cannot track using our middlerwar, so we need a solution where we can sit on router, , analyze all outgoing traffic and get 2 paramaters from the traffic in realtime
- Response time
- outgoing URL/SNI of supplier

thats it.
We used following tools already
- Squid
- Nginx
- Zeek

None of proxy worked as some of our suppliers used SSL Pinning.

We need highly trained TCP/IP network engineer, who is a guru who can give us a tool or a way to track all traffic and give us realtime (or may be offline, based on PCAP files analysis, using NTP-NG, security onion, or any other Security gateway or spcialied router that does this for us.

Skills: Linux, Linux System Administration, Network Administration, Encryption, Network Security, Web Proxy, HTTP, C++, VPN

My website, austintarottherapy.com is not as fast as I would like. I'm wondering if you can help make it load faster. Current speed is 52 percent on mobile and 66 percent on desktop. Most of the images are in jpeg format. The website platform is Wix. Perhaps this is a good speed? If you think you can improve it let me know. I would like to improve it without having to drop videos and images. Currently, there are only two videos.

Let me know if you think this is worth the effort.

Really appreciate it,

Linda

Skills: PHP, JavaScript, Amazon Web Services, Redis, WordPress, HTML, Page Speed Optimization, Cache Management, Website Optimization, Varnish Cache, Cloudflare, Shopify Development, Elementor, Linux System Administration, Web Development

I have an Ubuntu server which hosts a administrative system. We have it hosted in AWS Lightsail instance, and it stopped working and it just stopped working.

We have instances snapshots and we have tried to recover it by creating a new instance with latest snapshot, still, this has failed.

We just need someone who can go into the instance, troubleshoot it and fix it to get the website working again.

Once hired, I will provide AWS Key file to connect to instance.

This is urgent to fix.

Skills: Linux System Administration, Ubuntu, Apache HTTP Server

I would like to use a reverse proxy to hide the IP address of my backend server, where my website is hosted. I have another server that I want to use as a frontend server.

I use CloudPanel on both servers, so Nginx is already installed on both instances. I attempted to set up the reverse proxy myself but was unsuccessful, which is why I created this project.

What I would like is for you to summarize the steps you took to make it work, so I can follow them in the future if I need to set up another reverse proxy.

Skills: NGINX, Web Proxy, PHP, Linux System Administration

We are looking for a skilled freelancer to assist with the setup of SSH on our Windows Server 19 vm on Azure.
The SSH should be configured with PostgreSQL on the same server.
The ideal candidate will have experience in configuring SSH for secure remote access, ensuring proper security measures are in place, and providing documentation for future reference.

Thank you.

Skills: System Administration, Windows Server, Network Administration, Windows Administration, Linux System Administration

Hey hey, exactly as the title states, we are facing an issue in our Vbulletin 4, when uploading an image through the image attachment in the editor, nothing happens.

Skills: vBulletin, PHP, MySQL, JavaScript, Linux System Administration

I am seeking an experienced Odoo expert to assist with my Odoo 16 installation. The job involves addressing various small setup fixes and answering specific questions related to the platform. You should have a solid understanding of Odoo and be able to provide efficient solutions to enhance my setup. If you're knowledgeable in Odoo 16 and can troubleshoot effectively, please apply.

Skills: Odoo, Python, Odoo Development, Linux System Administration, DNS

We are seeking a highly skilled expert with extensive experience in Linux and iPhone communication. The ideal candidate will have a deep understanding of Apple communication protocols and a proven track record of successfully interfacing Linux systems with iPhones. Your role will involve utilizing your expertise to develop solutions that facilitate efficient communication between these platforms. If you are passionate about technology and can solve complex communication challenges, we would love to hear from you.

**Relevant Skills:**
- Linux system administration
- iPhone app development
- Knowledge of Apple communication protocols
- Networking and protocol analysis
- Problem-solving and troubleshooting skills

Skills: iOS, Smartphone, Linux System Administration, C++

Hello
I have 2 VPS at OVH (France) for which I have a SSL issue and 2 Mautic instance in place.

1/ SSL is broken
Correct the SLL configuration
The system is installed in a VPS hosted at OVH (VPS description here)
The system was working fine until we changed the url from sky.smartma.io to ocs.smartma.io, verify that it is correctly configured with the right url (ocs.smartma.io).

2/ Can’t log in the instance
The system is sending an authentication request by email but email never arrives
You may have to update the smtp configuration, I will provide the smtp details here once you have started the job.

3/ Verify the Mautic version and update if needed
The system may also be unstable because the last dev tried to update it, verify if the system is correctly updated or update it to the last stable version to have it running fine.

Skills: Linux System Administration, NGINX, System Administration, SSL

Job Description:
We are seeking a dedicated and detail-oriented Junior Linux Administrator to join our team. The ideal candidate will play a crucial role in supporting and maintaining our infrastructure and internal applications for a successful CRM company. This position offers an exciting opportunity to work with cutting-edge tools and technologies, including Linux, Proxmox, Apache Guacamole, Zoho Assist, and other IT applications, while contributing to a dynamic and growing organization.

Note: This role requires the candidate to work in the Eastern Time Zone (ET).

Key Responsibilities:
Linux System Administration:

Maintain, monitor, and troubleshoot Linux servers across various environments (development, staging, and production).
Perform regular system updates, patch management, and ensure system security compliance.

Proxmox Virtualization Platform:

Manage and maintain virtualized environments using Proxmox.
Create and deploy virtual machines (VMs), optimize resources, and ensure high availability.

Guacamole Remote Desktop Gateway:

Configure, monitor, and troubleshoot Apache Guacamole for remote desktop access.
Implement secure access controls and ensure smooth remote connectivity for end users.
Zoho Assist and IT Applications:

Provide support for Zoho Assist to facilitate remote IT support and session management.
Assist in deploying, configuring, and troubleshooting other IT applications critical to internal operations.
Infrastructure Support:

Assist in maintaining the network, including firewalls, switches, and VPN configurations.
Monitor system performance and proactively address issues to minimize downtime.
Documentation and Reporting:

Document configurations, processes, and troubleshooting steps for internal knowledge sharing.
Generate regular reports on system health, performance metrics, and incident resolutions.
Qualifications:
Required Skills and Experience:
Proven experience working with Linux operating systems (Ubuntu, CentOS, or similar).
Hands-on experience with Proxmox for virtualization management.
Familiarity with Apache Guacamole for remote desktop services.
Working knowledge of Zoho Assist or similar remote support tools.
Experience troubleshooting and maintaining IT applications in a corporate environment.
Basic understanding of networking concepts (TCP/IP, DNS, VPN, firewalls).
Must be able to work in the Eastern Time Zone (ET) to align with team and business needs.
Preferred Skills:
Scripting skills (Bash, Python, or similar) for automation.
Familiarity with CRM systems and their infrastructure requirements.
Experience with monitoring tools (e.g., Nagios, Prometheus, or Zabbix).
Exposure to ITIL practices and ticketing systems.
Soft Skills:
Strong problem-solving abilities and attention to detail.
Excellent communication skills, both written and verbal.
Ability to work collaboratively in a team environment.
A proactive mindset with the ability to manage multiple tasks and priorities.

Skills: Linux System Administration, Linux, Proxmox VE, guacamole

I am seeking a skilled freelancer to resolve configuration errors in my Postfix setup, specifically focusing on the main.cf file. The ideal candidate should have a strong understanding of Postfix mail server configurations and be able to identify and fix issues efficiently. If you have experience in troubleshooting mail server problems and can provide clear documentation of the changes made, please apply. Your expertise will help ensure a smooth and reliable email service.

Skills: Linux System Administration, DNS, System Administration, Network Administration, CentOS, French, English, Canadian French Accent

We are seeking a skilled freelancer to assist in migrating our website's image and file hosting from Filestack to Cloudflare. This project involves setting up Cloudflare services, ensuring that all files are transferred securely, and that the website remains functional throughout the process. The ideal candidate should have experience with cloud-based hosting solutions and a good understanding of website architecture. If you're ready to help us optimize our file hosting solution, please apply!

Skills: Web Hosting, WordPress, Linux System Administration, cPanel, Amazon Web Services

Hello,

This is for you probably a short job. We are not Linux experts. A new Linux Ubuntu server has been installed. SSH has been installed as well. But when we try to access it over SSH, it says "not allowed".
We would like you to fix this and explain how we can do it ourselves in the future with new installs.
That's it. We can give you access to the Linux over Anydesk on one of our PC's.

Skills: Linux System Administration, Ubuntu, Linux, System Administration

We are seeking a skilled Network Engineer to design a robust network infrastructure that meets our operational requirements. The role focuses on creating detailed network architecture plans and collaborating with stakeholders to ensure feasibility and efficiency.
Key Responsibilities:

Design a network architecture integrating two internet providers with failover, BGP, and multihoming configurations using FortiGate routers.

Plan the announcement and configuration of a /24 IP pool, including subnets, gateways, and name servers.

Develop VLAN configurations to segment traffic between shared hosting servers and Virtualizor servers.

Collaborate with internet service providers to gather required network details (IP addresses, subnets, gateways, and DNS settings).

Create documentation for remote access solutions for rack management.

Provide detailed network diagrams and recommendations for optimal performance, redundancy, and security.

Skills: Network Administration, System Administration, Network Security, Network Equipment, Virtualization, VPN, Network Design, Windows Server, Virtual LAN, Linux System Administration

We are seeking an experienced IBM AIX Engineer that can help with remote technical support to manage and optimize our AIX systems. The ideal candidate will have a strong background in AIX administration, troubleshooting, and performance tuning. 40 hours available over a week period to support our customer as they move workloads to power 9 boxes they are buying and help setup partitions etc.

Skills: Python, Linux System Administration, System Administration, Java, Linux

We are seeking an experienced PostgreSQL DBA to configure pgBackRest for reliable backup and restore of our PostgreSQL databases.

Responsibilities:
Install and configure pgBackRest for PostgreSQL backup and restore.
Set up full, differential, and incremental backups.
Implement and test backup and restore procedures.
Configure retention and archive policies.
Monitor and ensure backup reliability.

Skills Required:
Strong PostgreSQL experience.
Proficiency with pgBackRest.
Backup strategy expertise.
Linux/Unix knowledge.

Skills: PostgreSQL, PostgreSQL Programming, MySQL, SQL, Linux System Administration, Database Design, Database Administration, Server, Linux

We are looking for an AWS professional to set up EC2-based NAT gateways for our servers. This project aims to eliminate the requirement for public IPs while ensuring secure and efficient internet access for our resources. You'll need to set up the EC2-based NAT gateways, update VPC / routing tables to use them, set up auto-scaling to ensure they don't go down and ensure you do so without any downtime.

For someone with AWS knowledge, this should be a fairly simple and straightforward task.

If this project is successful, there is a good amount of additional AWS-IT work we could use assistance with in the future.

Skills: Amazon Web Services, Amazon EC2, Network Administration, Linux System Administration, System Administration

We are looking for an AWS professional to set up EC2-based NAT gateways for our servers. This project aims to eliminate the requirement for public IPs while ensuring secure and efficient internet access for our resources. You'll need to set up the EC2-based NAT gateways, update VPC / routing tables to use them, set up auto-scaling to ensure they don't go down and ensure you do so without any downtime.

For someone with AWS knowledge, this should be a fairly simple and straightforward task.

If this project is successful, there is a good amount of additional AWS-IT work we could use assistance with in the future.

Skills: Amazon Web Services, Amazon EC2, Network Administration, Linux System Administration, System Administration

We are seeking an experienced professional to configure a reverse proxy for our web services. The objective is to route traffic from:

sub.domain0.com/domain1 to subdomain.domain1.com
sub.domain0.com/domain2 to subdomain.domain2.com

This setup should ensure that the backend URLs (subdomain.domain1.com and subdomain.domain2.com) remain hidden from users and that the configuration does not negatively impact SEO performance.

Skills: NGINX, Linux System Administration, Web Proxy

- Manage and create Grafana dashboards.
• creating Linux gold builds (RHEL, Ubuntu, CentOS).
• Assist with Linux patching.
• Knowledge of cloud platforms (AWS) and on-prem infrastructure and security tools: Tenable, CrowdStrike, and Splunk.

Skills: Linux System Administration, Amazon Web Services, Network Security, Security Infrastructure, Security Patch Installation

Need to configure Ubuntu 20.04 Pro to fix security issues for auditing purposes. The network engineer must be experienced with DISA_STIG requirements on Ubuntu.

Skills: Linux System Administration, Network Security, System Hardening, Network Administration, Penetration Testing