Hire the best Red Hat Administrators

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  • US$80 hourly
    I have 21 years of general linux experience with apache, php, bash, python and various other scripting/programming languages. I have 7 years of expert level experience using memcache/redis and nginx application accelerator proxies based on Redhat and Ubuntu with php-fpm, apache, nodejs, java, .net and other application servers. These include zend, wordpress, drupal and several other web software suites In one of my previous projects I was been able to allow for up to 40,000 simultaneous user sessions across twenty apache application servers utilizing nginx reverse proxies, behind several F5 load balancers. Initial hardware was able to accommodate up to 4,000 users. Since the application was not stateless nor was it designed for data segregation between private/public data the nginx rulesets were very complex requiring rewrites, header injections/strips and even body regex find/replaces. I also have expert level experience with large scale wordpress clusters from the file service and db aspects. I have experience with appdynamics, nagios and large scale ELK logging. I have experience with AWS, especially linux EC2 containers, elastic beanstalk and cloudformation. I am highly skilled in troubleshooting complex multi-tier interaction issues using system logs, stack traces and wireshark packet traces.
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    HAProxy
    PfSense
    Linux System Administration
    Memcached
    Apache Nutch
    Ubuntu
    Apache CouchDB
    Redis
    NGINX
    PHP
  • US$39 hourly
    I have 30-years experience in network projects including design, implementation, system administration and in software development. For the first 5 years of my career I worked on software development: coding and especially testing. For the last 25 years I'm working on implementation and maintenance of University of Nis WAN. Last 20 years I'm deeply involved in AMRES (Academic Network of Serbia) project. Don't fix it if it ain't broken, don't break it if you can't fix it! SKILLS SUMMARY - Any system administration tasks - Operating Systems: any *nix (Linux, FreeBSD, SGI IRIX, SCO, Solaris, OSX), Windows 3.1/9x/Me/XP/Vista/W7/W8/W10, WinServer NT/2K/2003/2008/2012/2016 - LAN & WAN: Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI and Wireless LANs. T1/T3, SDH/SONET, Frame Relay, WDM, ISDN, ADSL, SHDSL, Cable Modems, Cellular, X.25. - Network Protocols: TCP/IP, IPv6, UDP, OSI, CDP, IP Multicast, IPSec, VoIP, Routing, VLANs, Bridging, Trunking, VPN, SNA, DLS - Network Services & servers: SMTP/POP3/IMAP, FTP/SFTP, Telnet/SSH, HTTP/HTTPS, DNS, DHCP, NNTP, NTP, LDAP, SNMP, NETBIOS, Apache, Nginx, MySQL, Plesk, cPanel, Zimbra, VMware, CentOS, Ubuntu, Debian - Network Equipment: various types of modems, firewalls, switches and routers. - Dedicated, VPS and cloud environment servers (Amazon AWS, Google Cloud, MS Azure, Digital Ocean, Linode). - Programming Languages: Unix Shell scripting, BASH, C, Pascal, MS Visual Basic, PHP, HTML, (a bit of Python).
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    CentOS
    Ubuntu
    System Administration
    Apache Administration
    SSL
    Let's Encrypt
    Linux System Administration
    Firewall
    Internet Security
    Cloudflare
    Zimbra Administration
    Unix System Administration
    Network Security
    Network Administration
  • US$125 hourly
    DevOps, PaaS, OpenShift Container Platform, OKD, Docker, Kubernetes, Terraform, Ansible - this is my main focus. Over 15 years of experience in managing Linux servers, including: - setting up - managing - optimizing - securing - testing Everything is done by applying best DevOps practices, when applicable, using configuration management and automation tools, e.g., Ansible, Terraform, and Salt. Database experience including MySQL-flavors and PostgreSQL.
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    Red Hat Certified Engineer
    OpenShift
    Red Hat Enterprise Linux
    DevOps
    Linux System Administration
    Terraform
    Ansible
    Kubernetes
    Docker
  • US$20 hourly
    I'm Nevin Davis, I have a degree and diploma in Computer Science and Engineering. I'm a redhat certified engineer with 8 years of experience as a server administrator. My strengths and skills are:- * Well knowledge in AWS, Google Cloud, Azure... etc * Sound knowledge in Linux/Unix like operating system. * Deep knowledge in cPanel/WHM. * Familiarize with Plesk, Interworx, Website Panel, Webmin, Directadmin. * Automated installation of Red Hat Enterprise Linux. * Network configuration and troubleshooting. * Server hardening. * Managing partitions and file systems. * Managing flexible storage with LVM. * User Management & Administration. * Managing selinux. * Basic creation and troubleshooting on scripting like Shell/Perl. * Installing and managing softwares. * Managing installed services. * Kernel re-configuration & parameter tuning. * Installation of patches and packages. * File sharing with FTP. * NFS configuration & administration. * Job Scheduling and Automating process using CRON. * XEN, OpenVZ virtualization. * RAID * Idera Back up server management. * Familiarize web servers- Apache, Litespeed, Nginx. * Deep knowledge in SolusVM. * Migration. * SSL Cert generation, installation. * IPMI, KVM console management. * Billing Module Management(whmcs,vision,osticket) * VPS, Shared and Dedicated server Management * Monitoring (Nagios) & troubleshooting with performance related issues. * Installation of Antivirus and Troubleshooting with virus related issues.
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    Web Host Manager
    CentOS
    Linux System Administration
    SSL
    WHMCS Development
    Domain Migration
    OpenVZ
    cPanel
    WordPress
  • US$95 hourly
    => Let's Connect Hello, I'm Dima, a seasoned CyberSecurity Specialist and Turnkey Infrastructure Expert specializing in BigData solutions and data analysis, utilizing a DevOps approach. => Expertise Overview With a robust passion for constructing SOC, SOAR, and SIEM solutions, my primary focus lies in developing data ingestion, enrichment, and analysis pipelines, ensuring they are highly available and fault-tolerant. My expertise extends to building central logging and real-time processing platforms from the ground up, optimizing them for performance, security, and reliability across multiple environments, whether in the cloud or on-premise. => Value Proposition My commitment is to deliver solutions that not only centralize security and threat intelligence but also facilitate enhanced control over data, ultimately contributing to infrastructure cost savings. => Technological Summary CyberSecurity:------- > Wazuh, Suricata, pfSense BigData:--------------- > Kafka, ElasticSearch, OpenSearch Data Processing:----- > FluentD, Vector.dev, Apache NiFi Infra as Code:--------- > Terraform, cdktf, cdk8s Virtualization:--------- > Proxmox, VMware Containerization:----- > Kubernetes Clouds:---------------- > AWS, Hetzner, DigitalOcean, Linode Automation:----------- > Jenkins, GitHub Actions Monitoring:----------- > Zabbix, Grafana, Kibana, Prometheus, Thanos Mail:--------------------> MailCow SMTP/IMAP, Postfix VPN:------------------- > OpenVPN Server Programming:-------- > Bash, Python, TypeScript Operating Systems:- > CentOS, RHEL, Rocky Linux, Ubuntu, Debian => Personal Attributes • Leadership: Leading by example with a team-first approach • End-to-End Execution: Proficient from POC to Enterprise-level implementation • Resilience: Demonstrating high thoroughness and endurance • Adaptability: A quick, can-do architect and experienced troubleshooter • Optimization: Adept in process and performance optimization • Documentation: Skilled technical documentation writer • Vision: A visionary in technological implementation and solution provision
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    Elasticsearch
    Linux System Administration
    Apache Kafka
    Apache Hadoop
    Email Security
    Machine Learning
    ELK Stack
    Cloudera
    Zabbix
    MySQL
    Big Data
    Apache NiFi
    PfSense
    Proxmox VE
    Amazon Web Services
  • US$40 hourly
    As a Crestron Certified Programmer with 9 years of experience, I specialize in: Programming and Configuring AV Systems: Expertise in configuring and programming audio and visual systems, including video conferencing, digital signage, lighting, sound, and control systems. Collaboration with Internal Teams: Working closely with project managers, AV designers, and installation technicians to ensure systems meet clients' needs. Troubleshooting and Issue Resolution: Quickly identifying and resolving technical issues related to audio and visual systems. System Testing and Technical Support: Conducting thorough testing and providing ongoing technical support post-installation to ensure client satisfaction. Programming Expertise: Proficient in programming Lighting zones, Smart Remotes, iPhones, iPad, HVAC, Smart TVs, alarm Systems, Snow Melt Systems, Multi-Room Audio systems, and Crestron Digital Media Switchers. Integration with VoIP Servers: Able to integrate systems with VoIP servers for local and international calling capabilities. Crestron Fusion Setup: Experienced in setting up Crestron Fusion for room scheduling and system monitoring. Integration with KNX or C-bus: Capable of integrating Crestron systems with KNX or C-bus protocols. Voice Control Integration: Skilled in integrating Crestron systems with Amazon Alexa or Google Home for voice control functionality. Code Editing and Troubleshooting: Proficient in editing Crestron code to add more features and troubleshooting system equipment. Additional Technical Proficiencies: Operating Systems: Proficient in RHEL, Debian, Ubuntu. Scripting Languages: Experienced in Bash, Python. Database Management: Knowledgeable in MySQL. Cloud Management: Familiarity with AWS, Digital Ocean, Linode, etc.
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    Home Automation
    Linux System Administration
    Extron Programming
    C#
    Crestron Programming
    FreePBX
    Virtualization
    cPanel
    Asterisk
    VoIP Administration
    Kernel-based Virtual Machine
  • US$35 hourly
    I'm a very responsible, conscientious, team player, polite, hardworking, and willing to learn new technology. In every situation try to minimize stress in the company. My IT professional background with almost a decade of experience. Currently working as an IT infrastructure team leader for a financial institution in my country. Experienced and highly knowledgeable subject matter expert in design, configuration, implementation, and troubleshooting/support in the following technology fields: Systems/Virtualization: - Linux Systems Installation, Administration, and Development - Full Linux system administration including performance optimization, scripting, high availability, backup & restore - Windows Server Administration (AD/DNS/Exchange) - Virtualization planning/deployment/tuning (VMware/Oracle VM/KVM) - Networking/Security • HA, Backup & Disaster Recovery planning/deployment Database administration: - Oracle Database (Deploying, upgrade, migration, RMAN configuration, Backup and Restore procedures, Dataguard configuration, RAC clustering) - MSSQL Database (Deploying, upgrading, migration, Mirroring configuration) - Mysql Database (Deploying, upgrading, migration) Network devices: - Cisco Switches - Cisco Routers - Cisco Firewall, Fortinet Firewall
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    System Administration
    Windows Server
    Linux
    Microsoft Windows
    Network Administration
    Virtualization
    Linux System Administration
  • US$15 hourly
    Greetings, Are you in need of VOIP PBX setup and IP calls, SMS, and call center features for your business? I am Junaid, a certified Asterisk, a 3cx certified (beginner to advanced) Engineer. My job responsibilities include Installation and configuration of IP PBX on cloud platforms such as Vultr, AWS (Lightsail, ec2), Digitalocean, Azure, and on-site installation on local machines or virtual machines. I am an Asterisk certified, 3cx advanced certified engineer, FreePBX, and FusionPBX expert. My Graduation is in Telecom and have seven years of experience in IT, VOIP, and Server Administration. Skills (VOIP) - Install, Configure, and set VOIP Pbx on Linux and Windows operating systems. - Configure custom domain and DNS setup with SSL configuration or Let's encrypt. - PBX Configuration includes extensions creation, Ring Groupes, IVR (Digital Receptionist) Call Queues, Time Conditions, Inbound and Outbound routes setup, and Voicemail. - SIP Trunk configuration for external inbound and outbound calls. The SIP setting also includes the network configuration and port (SIP 5060) setup. - Network and Firewall setup for smooth call routing on UDP and TCP protocols. - IP Phones ( Yealink, Fanvil, or Grandstream phones) and softphones (Xlite, Microsip, 3cx, Zoiper) configurations and provisioning with the PBX server. - Integration of third-party software like open source CRM (Vtiger, Zoho, Oddo), Billing software (ASTPP, A2billing). - Voice codecs and Transcoding setup. - Call flow app designing. - Troubleshoot the errors and issues in configuring the PBX. - Provide ongoing support and troubleshoot the issues on remote Anydesk or Zoom. Linux and IT Skills I am a certified RHEL administrator working on web server installation and configuration on Apache and Nginx, file system, installation, ownership, and permission, partitions, Archive compression tools and Rsync, Fdisk partitioning cases, Process and daemons, and performance monitoring. My job responsibilities as Linux admin include: - Installing VOIP PBX servers or Application servers on Apache and Nginx. - Configure Nginx as a Reverse proxy server. -Taking Backup of the Pbx and restoring on the new server. - Cron job scheduling in Linux for monthly and weekly backup, auto-renewal, and auto-recording deletion - Basic and advanced file system management and swap files. - Cisco certified network administrator, having work experience on Cisco switches, routers, and bridges. - Basic skills include Windows servers 2012, 2016, and desktop Windows 10, 8, and 7. - DNS and IP aliasing. - RPM Install, upgrade, and erase packages in Linux. - Performance monitoring using tools like Top, find, and FSH. - Database Administration. VOIP Servers use mainly Mysql, MariaDB, and Postgresql. Services - AWS Cloud Computing. Managing ec2 and Lightsail instances. - Aws S3 bucket configuration. Integrate S3 with external application servers. - ServerClient model NFS server - VSFTP Services - Samba Server - DNS server - Mail Server - Proxy server
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    Apache HTTP Server
    CRM Software
    Vtiger
    NGINX
    Asterisk
    Linux System Administration
    FreePBX
    LDAP
    Session Initiation Protocol
    3CX
    System Security
    Virtualization
    System Administration
    VoIP
  • US$40 hourly
    I have 5+ year experience working as a Linux Server Administrator & Kubernetes Engineer. I can deploy & configure different-2 application in the form of pods using kubernetes and openshift. I can monitor and manage linux servers. I am experties in Ansible automation. I can automate complex mannual administrative task through ansible playbook and roles. RHCSA | RHCE | ANSIBLE AUTOMATION | LINUX SERVER TROUBLESHOOTING | Kubernetes | Kubernetes Security Specialist | Python | VIRTUALIZATION | DNS | WEBSERVER | APACHE | MAIL SERVER | MARIADB | DHCP | PXE BOOT | NFS | SAMBA | LDAP | LVM | PROCESS MANAGEMENT | LOGS ANALYZING |
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    Ansible
    Red Hat Certified Engineer
    OpenShift
    Bash Programming
    Red Hat Enterprise Linux
    Automation
    Database
    Kubernetes
    Linux System Administration
    Terraform
    System Administration
    Amazon Web Services
    Linux
    Python
    Apache HTTP Server
  • US$40 hourly
    15 Years experience as Sr. Linux Admin, Unix Admin, System Admin, Storage Admin, Server Admin, Virtualization Expert as well as Database Admin Strong experience in installing, configuring, maintaining and troubleshooting anything on Linux/Unix/Windows, Raspberry * OS: Centos, RHEL, Ubuntu, Debian, Cloudlinux, Windows * System Backup and Recovery including System boot and kernel issues * Server Security and Server Hardening: FIREWALLD, UFW, IPTABLES, Selinux, TCP Wrappers, finding security vulnerabilities and resolving the issue using audit tools. * Server Management: User/Disk/File Management, Routing, Team Bonding, Linux Network, ISCSI, Multipath, Kannel, LVM, Partitions, RAID. * System Monitoring Tools: Whats Up Gold, Netflow, IFTOP, IPTRAF, Nagios, Zabbix, OSSEC * Data Center Management: Good experience in Management of Servers on Cisco, HP, IBM, Dell, Supermicro, etc. * Hardware and Software RAID * Network Sharing: NFS, VSFTPD, Samba, etc. * SAN/NAS Storage: HP, IBM, Dell, EMC, Netapp, Lenovo, etc. * Virtualization: Virtualizor, KVM, Xen, ESXI, Oracle VirtualBox, VMware, Vcenter Converter, etc. * Configuring and Managing LAMP/LEMP (linux, Apache, Nginx, Mysql and Php), SSL/HTTPS including Letsencrypt * cPanel/WHM, Webmin, Plesk, VirtualMin * Cloud: AWS, GCP, Digital Ocean, OVH, etc * Server Architecture: NTP, SSH, SQUID, DHCP, BIND, Postfix, Sendmail, VNC, Kannel, HA-Lizard, DRBD, XCD-NG, RSYNC, ISCSI, Multipath, etc. * Applications and Open Source Tools: WHMCS, Opencloud, Nextcloud, Zulip, OpenVPN, Polr, Odoo, Advandate, Openmeetings, TOR, Keycloak, Rocket chat, Opencanary, eSignForms, Apache Nifi * Linux Commands: Excellent Knowledge of Linux commands, Administration and Shell Scripting. * Streaming Solutions: Experience on Darwin Streaming Server, Wowza Streaming Engine, Xenon Live Encoder, Xenon Streaming Server, Xenon Streaming Mediator, Crypton Headends.
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    Plesk
    cPanel
    MySQL
    Virtual Private Server
    VMware ESX Server
    Linux System Administration
    Amazon EC2
    Unix System Administration
    Red Hat Enterprise Linux
    Unix Shell
    Virtualization
    SSL
    Linux
    Ubuntu
    CentOS
  • US$75 hourly
    IT Professional for 20 years. A passion for helping, learning, and sharing knowledge. Extensive experience in high-level troubleshooting of issues, figuring things out, getting things done, and mentoring team members along the way.
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    OpenShift
    DevOps
    Proxmox VE
    Bash Programming
    Automation
    Red Hat Certified Engineer
    Linux System Administration
    Technical Writing
    Technical Documentation
    Deployment Automation
    Git
    MySQL
    Ansible
  • US$35 hourly
    I started to work as linux administrator since 2012, for my own purposes. I have experience with: Debian - since 2011 Apache(nginx)+MySQL+phpMyAdmin - since 2013 BASH - since 2013 OVH/SoYouStart services - since 2015 MySQL Cluster - since 2016 AWS - since 2019
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    SSL
    Amazon EC2
    Linux System Administration
    Windows 10 Administration
    Bash Programming
    Debian
    DNS
    Apache HTTP Server
    Amazon Web Services
    CentOS
    Ubuntu
    MySQL
  • US$54 hourly
    ⭐Top-rated DevOps and Cloud Engineer with almost 80 completed projects on Upwork. I have a team of highly motivated DevOps experts who are ready to provide advice and assistance with various issues and technologies. Just book a consultation, send us a request and we will choose who will best cover your inquiry. What you will get with me and my team? ✅Price & Value balance. With us, you get top-quality DevOps assistance at a reasonable price. We are sensitive to customer’s needs and use a proactive mindset and efficient workflow to exceed your expectations. ✅Long-term support. We tend to build reliable long-term relationship with our customers, supporting them throughout their product lifecycle. ✅Relevant expertise. Our team members use all modern DevOps tools & technologies to cover various challenges. We have AWS/GCP certified experts in team and internal DevOps training program which helps to grow strong talents in-house. ✅Business-oriented approach. We work with startups and businesses of different scale every day and know how to enable the efficient use of resources and save up to 80% in your infrastructure costs, how to improve deployment time from weeks to minutes, and how to make your setup secure. ===== Technologies that I adopt and I’m an expert at: - AWS, GCP, Azure - Docker - Kubernetes - Terraform - Ansible - Jenkins, CircleCI, GitHub/BitBucket pipelines - Prometheus - Grafana - Datadog etc. My area of expertise includes: DevOPS • CI/CD • Infrastructure as Code • Container Orchestration • Configuration Management SysOPS • Remote Infrastructure Management Services • Monitoring • Application Management • Infrastructure Upgrades/Migration CloudOPS • Cloud Administration (AWS, GCP, Azure, Digital Ocean) • Cloud Monitoring & Maintenance • Cloud Cost Optimization • Architecture Consulting • Cloud migration DbOPS • Remote Database Administration Services • Performance Optimization • Orchestrated Migration across platforms/ databases Industries I have experience with: - Fintech - Healthcare - Security - Marketing - Blockchain - Delivery, etc. ===== Case studies of the customers I have worked with: 🔸Safe and Cost-Effective Infrastructure to Bring One-Click Deployment For a Cyber-Security Provider: Deployment time decreased from 8 hours to 10 minutes (48x faster deployment). Fewer resources (time/costs/employee-hours) are now required as code deployment has moved from a tedious, manual process to a codified, automated mechanism. 🔸Backend Infrastructure Design & Development for all-in-one connectivity platform for restaurants & stores: Product provisioning time shortened from 1,5 weeks to 1 hour. Company can drive much more value to their customers now, due to being able to provision the product 200-300 times a month, instead of 5-6 monthly deployments. System redesign and automation allowed to save 30-35% of the budget and free the internal resources for more important tasks. Feel free to contact me or book a consultation, I’d love to discuss your project and help you reach business goals.
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    Amazon S3
    Amazon EC2
    System Administration
    Git
    Microsoft Azure
    CI/CD
    Terraform
    Docker
    Infrastructure as Code
    Kubernetes
    Google Cloud Platform
    DevOps Engineering
    Containerization
    Amazon Web Services
    DevOps
  • US$35 hourly
    I am DevOps Sales Manager with NIX. And I represent a great team of system administrators with more than 13 years of combined experience in Linux, Unix and Windows servers support. We are a proven AWS partner. And there are a lot of great DevOps experts with strong skills in Docker, Kubernetes, Vagrant, Jenkins, Chef, Puppet and Ansible in our team. With NIX, the IT network and infrastructure of your business will be in strong, reliable hands. We can: • Design and build cloud infrastructures with Amazon AWS, Microsoft Azure and Google Cloud. • Realize CI/CD systems using the most appropriate technology stacks. • Grow your infrastructures and realize HA and Auto-Scalable clusters. • Set up and monitor Remote Access (VPN) • Manage your servers (E-mail, Web, Data) • Provide Anti-Virus and Anti-Spam Protection • Manage Webhosting Automation • Provide Security Audit and Consulting for Networks, Servers and Services • Provide 24x7 Technical Support
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    DevOps
    Apache Administration
    Technical Support
    Linux System Administration
    Service Cloud Administration
    Windows Administration
    Amazon Web Services
    Docker
    Ansible
    Apache Tomcat
  • US$90 hourly
    I am a veteran DevOps and I love urgent jobs. Time is money for your business, and I strive to resolve problems quickly and efficiently, often within minutes. I optimize servers to handle large volumes of visitors and improve website and application performance. My solutions have saved some of my clients thousands of dollars in infrastructure costs. ⏱ General availability UTC: 7am-9pm, ET: 2am-4pm, PST: 5am-1pm. My expertise: site reliability engineering, high-traffic installations for WordPress, Magento and custom apps, and identifying performance bottlenecks in them. Server speed and load optimization, complex site, email, and domain migrations. Multiple-server architecture designs. Applications containerization and deployment for ECS and Kubernetes. Setting up an automated app, server deployment and testing with GitLab and GitHub CI/CD. Platforms: AWS, Google Cloud, DigitalOcean, Linode, Vultr and others Automatic infrastructure deployment and server provisioning with Terraform and Ansible Kubernetes deployments on AWS/GKE/DigitalOcean SSL / Letsencrypt / PCI DSS Compliance Dovecot / Postfix / Rspamd / SPF / DKIM / Email deliverability Apache / Nginx / Traefik / HAProxy / HTTP2 / PHP-FPM CloudFlare - advanced caching, WAF, workers and other features MySQL / MariaDB / Percona - performance analysis, configuration, complex migrations CPanel / WHM / Plesk / Froxlor Zabbix server monitoring. NewRelic, Blackfire code performance profiling GitLab, GitHub, BitBucket CI/CD pipelines VPN - WireGuard, StrongSwan, OpenVPN Earlier in my career I have been specializing in data recovery for eleven years, working with a wide range of workstations, servers and storage arrays. During this time, I have developed multiple data recovery tools for Windows in C# and for Linux in C and Python and reverse-engineered various software and hardware components.
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    Cloudflare
    Terraform
    New Relic
    DevOps
    SSL
    Cloud Implementation
    Data Recovery
    Linux System Administration
    GitLab
    Virtual Private Server
    Software Debugging
    Database Administration
    Cloud Migration
    Amazon Web Services
    Google Cloud Platform
  • US$25 hourly
    I'm a certified UNIX/Redhat Systems Engineer with over 7 years of experience with hands-on experience in the administration of Red Hat Enterprise Linux 6; 7 & 8. I'm an expert in Ansible playbooks. In love with High performance Computing (HPC) for Machine Learning (ML). I'm jovial, enthusiastic, and easy to communicate with. I have worked on projects which involved UNIX | Linux | Ansible | Shell Scripting | Docker | Podman | Performance Tuning | HPC/ML | RHEL 6, 7 & 8 | LVM | HTTPD | LDAP | SAN | NAS | TCP/IP | RAID | DNS | NFS | SSL/TLS | SMTP | SAMBA | Haproxy | Hetzner | Proxmox | Sagemaker You'll love working with me, I'm just a call away.
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    Docker Swarm Mode
    CI/CD
    Ansible
    Debian
    Kernel-based Virtual Machine
    GitHub
    Network File System Administration
    PHP
    Instructure CANVAS
    SSL
    Postfix SMTP Server
    Linux System Administration
    LDAP
    CentOS
    Server Virtualization
  • US$120 hourly
    I'm a Kubernetes and Rancher expert passionate about designing, building, and implementing scalable solutions for organizations of all sizes. With extensive experience in infrastructure and network analysis and design, I can provide customized Kubernetes and Rancher solutions that meet my client's specific needs. My expertise includes designing and implementing CI/CD pipelines, creating custom resources, and integrating APIs with Kubernetes and Rancher. I have experience working with various Kubernetes distributions, including RancherOS, k3s, RKE1/2, and Longhorn, and I am always excited to learn about new technologies and tools that can improve my work. In addition to my hands-on experience, I hold several certifications demonstrating my field expertise. I'm a SUSE Certified Administrator in SUSE Rancher v2.5, a Certified Kubernetes Administrator (CKA), a Certified Kubernetes Application Developer (CKAD), and a Certified Kubernetes Security Specialist (CKS). When working with clients, my main goal is to help them achieve their desired outcomes and exceed their expectations. I take a collaborative and consultative approach, listening carefully to my client's needs and providing expert guidance and support throughout the process. If you're looking for a skilled Kubernetes and Rancher expert to help you build a reliable, scalable infrastructure, please don't hesitate to get in touch. I'm always happy to chat and provide more information about my experience and approach.
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    Docker
    CI/CD
    Amazon EC2
    Load Balancing
    Containerization
    Kubernetes
    Rancher
    VMWare
    Linux
    Google Cloud Platform
    Ubuntu
  • US$80 hourly
    I specialize in Linux-based database systems. I hold the qualifications of Bachelor of Science (computer science), and have also attained RHCE (RHEL 6.0, 2012), and OCP (RDBMS, 10g). What I can offer clients is a professional solution that will meet requirements. Top Skills: * Linux systems administration: RedHat, CentOS, Ubuntu * RDBMS administration: Oracle and RAC, MySQL * RDBMS design and programming: PL/SQL, SQL performance tuning * Systems Programming: bash, Perl Comprehensive Skills: * Web Infrastructure Design and administration: Apache, Tomcat, Squid, JVM * Virtualization: Xen, KVM, VMWare Server * Firewall: Linux IPTables, Firewalld * Mail Servers: Sendmail, Postfix * Software development: Java (SE, Spring MVC), PHP, HTML, CSS, JQuery, Github, Maven, Visual Basic * Cloud: Microsoft Azure architecture design and implementation, Linode, Digital Ocean, AWS and S3 * Monitoring: Nagios, Big brother, Cacti, Zabbix * Hadoop big data
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    Oracle PLSQL
    Red Hat Certified Engineer
    Oracle RAC
    Linux System Administration
    Bash Programming
    MySQL Programming
    Java
    Perl
    MySQL
  • US$95 hourly
    TOP-RATED UPWORKER, OVER 13K HRS ON UPWORK AND 150+ SUCCESSFUL PROJECTS I am an experienced DevOps Engineer, Solutions Architect, and Cloud Engineer with a strong background in Security and Infrastructure. With 20+ years in the IT & Telecoms industry, I have consistently delivered successful global projects and led the design and delivery of complex cloud-based infrastructure that caters to millions of users. Throughout my career, I have had the opportunity to work with renowned international companies and Fortune 500 organizations, including: ✅ Mozilla (Firefox) ✅ Druva ✅ Walmart ✅ Vodafone ✅ Deloitte ✅ Aspen Pharmaceuticals ✅ AA (Automobile Association) ✅ Clover ✅ American Marketing Association ✅ RCI ✅ MTN My primary specialization lies in Cloud Computing, where I excel in automating operating systems and applications for internal, AWS, Azure, and GCP cloud environments. I am well-versed in private cloud platforms such as Hyper-V and VMware infrastructure. As part of my expertise, I consistently implement CI/CD pipelines using various toolsets such as CircleCI, AWS/GCP/Azure DevOps, AWS CodeDeploy, and GitHub, among others. Automated infrastructure provisioning and post-provisioning automation are areas where I am highly skilled, utilizing Ansible and Terraform to deploy resources in AWS/Azure/GCP as well as facilitate seamless enterprise cloud migrations from on-premises to the cloud and from cloud to cloud. In addition, I specialize in optimizing and consolidating cloud infrastructure to help you effectively manage your spending on both public (AWS, Azure, GCP) and private (VMware, Hyper-V, Citrix Xen) cloud environments. I prioritize scalability, sustainability, and security in all my endeavours. Throughout my career, I have successfully led over 500 projects from inception to completion, consistently meeting deadlines and staying within agreed budgets. My work ethic revolves around the principle of "under-promise and over-deliver," always striving to exceed expectations and add value to my clients' projects. Communication is one of my strong suits, and I excel at effectively collaborating with both technical and non-technical stakeholders. I am highly motivated, innovative, and analytical, constantly seeking opportunities to think outside the box and find optimal solutions for complex challenges. If you are looking for a dedicated professional who can help enhance your business, I am eager to work with you. Contact me today to discuss your business and explore how we can collaborate to achieve your goals. ⭐️ I am proficient in the following ⭐️ AWS Infrastructure Services Compute: EC2, Lambda, Elastic Beanstalk, ECS/EKS, Lightsail Storage: S3, EBS, EFS, Glacier, Storage Gateway Database: RDS, DynamoDB, ElastiCache, Neptune, Redshift Networking: VPC, Route 53, API Gateway, Direct Connect, Transit Gateway CDN: CloudFront, MediaStore, MediaConvert Security: IAM, Cognito, KMS, Secrets Manager, GuardDuty , Security Hub Monitoring: CloudWatch, CloudTrail, Config, OpsWorks Dev Tools: CodeCommit, CodeBuild, CodeDeploy, CodePipeline Migration: DMS, SMS, DataSync, Transfer Family Machine Learning: SageMaker, Comprehend, Lex, Polly, Rekognition Analytics: Athena, EMR, CloudSearch, Kinesis, QuickSight IoT: IoT Core, IoT Analytics, IoT Device Management Additional: RoboMaker, Braket, Blockchain, Ground Station, Sumerian, SQS/SNS, Cost Management Azure Services Compute: Virtual Machines, Azure Functions, App Service, AKS Storage: Blob Storage, Disk Storage, File Storage, Queue Storage Database: Azure SQL Database, Cosmos DB, Azure Database for MySQL/PostgreSQL Networking: Virtual Network, Azure DNS, ExpressRoute, Traffic Manager Security: Azure Active Directory, Key Vault, Security Center Monitoring: Azure Monitor, Log Analytics Dev Tools: Azure DevOps, Azure Pipelines, Azure Repos, Azure Artifacts Machine Learning & AI: Azure Machine Learning, Bot Services GCP Services Compute: Compute Engine, App Engine, Kubernetes Engine, Cloud Functions Storage: Cloud Storage, Persistent Disk Database: Cloud SQL, Cloud Spanner, Firestore, Bigtable Networking: VPC, Cloud DNS, Cloud CDN, Cloud Interconnect Security: Cloud Identity, Security Command Center Monitoring: Cloud Monitoring, Cloud Logging AI and Machine Learning: AI Platform, AutoML, Dialogflow Additional Technologies Cloud Infrastructure: CloudFormation, Hyper-V/VMware, BIND DNS, DNS DevOps and CI/CD: CircleCI, Jenkins, CodePipelines, Terraform, Ansible Containers & Orchestration: Docker, Kubernetes, EKS, AKS, GKE Web Servers: Apache, Nginx Databases: MySQL, MariaDB, PostgreSQL, Microsoft SQL, Snowflake Scripting & Programming: Python, PHP, Laravel Operating Systems: Linux (CentOS, Debian, RedHat, Ubuntu, UNIX), Windows (Desktop, Server) Monitoring Tools: Nagios, New Relic Virtualization: VMware, Proxmox, Xen Cloud Platforms: Hybrid Azure, AWS, GCP Version Control & CI/CD: GitHub, GitLab Hosting Services: Heroku, Netlify Testing & Automation: Selenium
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    Virtualization
    Deployment Automation
    System Administration
    DevOps Engineering
    Cloud Architecture
    Solution Architecture
    Network Administration
    Cloud Engineering
    Google Cloud Platform
    Cloud Computing
    Cloud Security
    Amazon Web Services
    Microsoft Azure
    Network Security
    Information Security
  • US$70 hourly
    My extensive experience in Cloud,Database and CyberSecurity over the past years include the following: 1). CISSP; Information security, Cybersecurity,Compliance 2) Information Security/Vulnerability Testing 3). Oracle Performance Tuning 4). Oracle Database technologies, SQL tuning,flashback, RMAN, RAC and others 5). Database System Security Scans and Vulnerability testing 6). Oracle Certified Professional 10g and 11g, 12c 7). Oracle Certified Database Security Implementation 8) AWS Solutions/Administration/EC2/S3/Cloud 9). HiTRust Aware/PCI DSS Aware 10). Microsoft Certified: Azure Fundamentals Please let me know if you have any questions.
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    PCI
    Data Protection
    Oracle Database Administration
    Linux System Administration
    Security Operation Center
    Security Engineering
    Oracle Database
    Information Security Governance
    Certified Information Security Manager
    PCI DSS
    Security Infrastructure
    Database Administration
    Network Penetration Testing
    Oracle Performance Tuning
    Information Security
  • US$75 hourly
    🥇UPWORK EXPERT-VETTED🥇 I’m a Network and Security Engineer/Architect with 17+ years of experience and an Expert Vetted Freelancer on Upwork with 13,000+ hours. I specialize in high-quality solutions for complex networking and cloud infrastructure challenges. ✨𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: 🏆Advanced Networking Solutions: ✅Vendors: Cisco, Juniper, Mikrotik, Arista, Dell, Brocade, Palo Alto, Mellanox, Sonicwall, Fiberstore, Sophos, Zyxel/Zywall, Quagga/Vyos, Fortinet/Fortigate, PFSense/OPNSense, Untangle, Unifi/Edgerouter/Edgeswitch/USG/Controller, Motorola/Cambium/PTP/PMP/Medusa, Aruba, Netonix, Cumulus, PRTG, Hyper-V, ESXI, ZTE, Huawei, DSLAM, OLT/ONT ✅Routing Protocols: RIP, EIGRP, OSPF, BGP, MPLS VPNs ✅Switching Protocols: RSTP, MST, VTP, Private VLANs, HSRP, VRRP ✅VPN Technologies: L2TP, PPTP, S2S IPSec, GRE, OPENVPN, Wireguard ✅Networking Standards: TCP/IP IPv4, IPv6 Planning and Implementation ✅Emerging Technologies: SD-WAN, ZeroTier 🏆Proficient in Linux systems: ✅Distributions: Ubuntu, Debian, CentOS, Fedora ✅Applications: Fastnetmon, GOBGP, Cacti, Librenms, Phpipam, Netbox 🏆Cloud Infrastructure Management: ✅AWS: Client/S2S VPN, VPC, EC2, SG, S3, RT ✅Azure: S2S/C2S VPN, VM, VNET, LB, SG, RT ✅Vultr: Compute, VPC, DC, Peering, RT 𝗘𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻: 🎓Master of Sciences in Computers Engineering 🎓Industry-Recognized Certifications: 🌟Cisco: CCDA, CCDP, CCNA, CCNA-Sec, CCNP-R&S, CCNP-ENT, ENARSI, ENCORE, ENSLD, SWSA 🌟Juniper: JNCIA 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: ⏰ Every day, Monday to Sunday 02:00- 16:00 EST
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    Network Design
    Cisco
    Microsoft Azure
    Amazon Web Services
    Multiprotocol BGP
    Sophos Sophos UTM
    PfSense
    Mikrotik RouterBOARD
    Security Engineering
    Network Engineering
    Ubiquiti
    VPN
    Network Equipment
    Network Security
    Firewall
  • US$75 hourly
    Accomplished IT Professional offering 15+ years’ formal and informal experience in computer technology with a strong backing in NT/Unix server management. Senior System Engineer with the ability to multitask, prioritize and work enthusiastically under deadlines. Technology savvy self-starter adept at transitioning work environments and drawing from previous experience to adapt to new technologies. Network Engineer: Cisco, BigIP F5, Fortigate, Juniper enterprise class hardware. BGP, GRE, PPTP/IPSec/SSL VPN. System Engineer: Windows Server (2000-2016), CentOS/RHEL, Debian/Ubuntu, Slackware, Gentoo, Solaris, Oracle 10+ years. Application Specialist: Bind9, DHCP Server, MySQL DBA, PostgreSQL DBA, Sendmail/Postfix MTA, Apache, Nginx, Varnish, Solr, Memcache.
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    Database Administration
    Windows Administration
    System Automation
    Windows Server
    Linux System Administration
    Unix System Administration
    VMware Administration
    Network Administration
    Amazon Web Services
    SQL
  • US$30 hourly
    I'm proficient DevOps engineer with strong skills and experience in software architecture analysis and design, system administration, DBA. I have perfect Docker knowledge. Good with git. I work for about 15 years with Linux and its app tool stack - Apache/nginx, MySQL/MaridDB, PHP. Xen, XenServer and VMware virtualisation. I designed complex CI/CD pipelines with GitLab, Azure DevOps and Jenkins for JS/TS and ReactNative mobile app. It included automised QA and Firebase mobile app deployment steps. I have perfect bash and Python knowledge and skills and good C# ones. Also I professionally worked with Windows-based infrastructure (Windows Server 2003-2022, Hyper-V, AD, GP, Exchange 2003-2019 and Exchange Online). I'm familiar with ITIL and I implemented IncM, ChgM and CfgM in many companies. I've perfect experience with enterprise-level servers (HP, Dell servers).
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    Server
    Linux System Administration
    Microsoft SQL Server Administration
    Windows Administration
    SQL
    Transact-SQL
    C#
    IT Service Management
    ITIL
    Microsoft SharePoint Administration
    Database
  • US$80 hourly
    Server admin, Python developer, and problem solver with 20+ years of experience. Do you need help with servers, DNS, hosting, Cloudflare, Email (SPF/DKIM/DMAC), SSL? Issues with your hosting provider and want to migrate? Are you frustrated? I can help! Free consultation. I've run web hosting facilities, a registrar, and managed over 50k domains. Infrastructure expert. Most recently I've been working with Redpanda/Kafka, TimescaleDB, PostgreSQL, Django, and stream processing technologies for real-time financial analytics. - Advanced Linux / FreeBSD Administrator and Infrastructure Engineer - Configuration and Performance Tuning - Hosting Server Migrations - Load balancing, high-availability - MySQL, PostgreSQL, MariaDB - DNS, Cloudflare - Cloud Services (AWS, DigitalOcean, Linode, Vultr, OVH) - nginx, apache, haproxy - cPanel, WHM, Plesk, Vesta, Bitnami, WordOps - Duo Security and 2FA Integrations - SSL Certificate installation and support including TLS upgrades - Wordpress performance and scaling - Python, Django, Redis, TimescaleDB, PostgreSQL - Redpanda (Kafka) and real-time streaming analytics ABOUT ME: Multi-disciplinary Expertise: 20+ years in server administration, software development, and business management. Proven Track Record: Founded a web hosting company serving 50k websites, generating over $1 million/year. Unique Skillset: Adept in tech implementation and project management, ensuring a well-rounded approach to your needs. Speedy learner, highly organized, efficient, ambitious, creative, and self-motivated problem solver. Excellent written and verbal communication skills. I work quickly, can problem-solve advanced tech issues, and pay close attention to details. My ability to do both hands-on tech work and business/project management gives me a unique advantage over my peers.
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    Web Service
    WordPress
    MySQL
    Network Administration
    Domain Migration
    Linux System Administration
    FreeBSD
    Web Hosting
    System Administration
    Security Management
    Python
    NGINX
  • US$50 hourly
    As a seasoned Cloud Architect, I bring deep expertise in designing, building, and deploying scalable and resilient systems on the cloud platforms such as AWS/GCP. My extensive knowledge of AWS services, is complemented by my experience with automation tools such as AWS CDK, Terraform, Serverless Framework, Ansible, and Jenkins. I am proficient in GitOps, DevOps, DevSecOps, and Data Engineering/Pipelining, allowing me to effectively manage the entire software development life cycle. I have extensive experience in cloud-native app development using Docker and Kubernetes, including configuring, deploying, and managing containerised applications on Bare-Metal k8s clusters and EKS. I have a proven track record of designing and maintaining data pipelines with tools such as Kinesis, SQS, SNS, Lambda, Athena, and Glue. My strong understanding of GitOps and DevSecOps principles enables me to implement secure CI/CD pipelines, monitor application performance, and troubleshoot issues efficiently. With a successful history of delivering complex projects within budget and on time, I am well-versed in security best practices for cloud infrastructure and can effectively implement and maintain security controls across the stack. - Modernized monolith apps into serverless or microservices architectures which boosted application scalability. - Earned the "Reviewed by AWS" badge for the application architecture and operational practices from AWS. - Spearheaded a team that won the 2019 Customer Appreciation Award from Telenor for microservices based application. - Contributed to world’s largest open source MOOC platform edx.org. - Achieved top-rated status as a freelancer on Upwork during the COVID-19 layoff period, serving 20 clients globally.
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    AWS Lambda
    Django
    C#
    Amazon Web Services
    MongoDB
    MySQL
    Node.js
    Python
    Docker
  • US$65 hourly
    AARON SUMMERS Independent Contractor April 2009 - Current • Provide remote Linux, networking, and application support for a variety of clients around the world. • Develop a custom SugarCRM, Xero Accounting, Concrete5 web store using PHP and MySQL. • Daily maintenance and security auditing of around 30 machines. • Build complex cloud based scalable solutions on Amazon EC2. • Scripting and automation of Linux based administration tasks using Perl and Bash. • Migration of web-servers from physical to cloud based solutions. • Provide end level support for certain clients. UNIX Engineer E Solutions Corporation March 2008 – April 2009 (1 year 2 months) • Responsible for supporting the operations of a Tier-1 colocation facility. Daily engineering and administration of OpenBSD, FreeBSD, Linux and Windows based operating environments. Identified and remedied a large number of network and host based security problems. Stabilized the bandwidth billing system for accuracy and provided assistance to the web development team. UNIX System Engineer Hilton Grand Vacations November 2006 – March 2008 (1 year 5 months) • Designed and built a custom Enterprises Data Ware House utilizing RedHat™ Enterprise Linux, IBM™ Information Server, and the Sun™ N1 toolkit. Back ported the RedHat™ clustering tools and GFS modules for RedHat™ Enterprise Linux 4. • Customized the operating environment for running the IBM™ Information Server 8 family of applications, consisting of IBM™ DB2 V 9.3, IBM WebSphere 6.0, IBM™ DataStage and IBM™ QualityStage. • Was the single onsite operations point for the HP-UX, Solaris, FreeBSD, MacOS X, and Linux machines. Designed and implemented the company’s external web presence using Solaris 10. Utilized zones, the ZFS file system, and hardware RAID on the T2000 platform. Wrote my own tools in Perl, C, and the Bourne shell. Debugged many complex operational problems. UNIX Administrator at Vortech, Inc. 2004 -2006 (2 years) • Responsible for the day to day operations of over 160 production servers. Maintained UNIX web, database and name servers based on FreeBSD 4.11 – FreeBSD 6.1 Built FreeBSD based servers for web hosting, backups, and network monitoring. Built Linux, Windows 2003, and Windows 2000 based servers for use in collocation. Provide phone and email support for web hosting and collocation customers. UNIX Administration and Technical Support at Magna Computer Corp September 2003 -May 2004 (9 months) • Built Linux and SCO OpenServer based servers. Provided support for custom software designed for the timeshare resort industry. Built programs and reports using technologies such as Apache, Perl, and XML. Extensive configuration and tuning of RedHat, Fedora, and SuSE Linux. UNIX System Administrator & Network Engineer at Independent Consultant November 2001 - July 2003 • Designed and implemented OpenBSD, Linux, and Windows 2000 Servers in a collocation environment. Extensive use of Apache, Perl, PHP, MySQL on UNIX. IIS Configuration experience, ASP, ActivePerl. Constructed web based application servers from scratch using previously mentioned operating systems as an install base. Console programming with C and ncurses. Experience with X11 API and GTK toolkit. Second Level Support at Jobwarehouse.com • May 2001 -September 2001 (5 months) • Supporting the primary website and data processing efforts. Networking and Integration at Magna Computer Corp September 1999 -June 2000 (10 months) • Develop TCP/IP based UNIX and Windows intranets. Provide technical support for SCO UNIX and Magnaware applications. Setup and maintain OpenBSD, FreeBSD, Linux, SCO UNIX and Windows based servers and workstations. Education Winter Park High School 1992 - 1996 – Gifted Program Valencia Community College 1996 – 1998 Contractor Recommendation "Aaron is a very good systems engineer for Linux, UNIX and Windows. He has an in depth understanding of system internals. I found him to be an honorable man that stands behind his word and keep on track of the project. He has always been friendly and a good attitude even when he is upset. He would make a good supervisor in any company." — Shelton R., Sr. IT Consultant / DB2 DBA Expert, Xtivia, worked directly with Aaron at HGVC
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    MySQL
    Linux System Administration
    Virtualization
    OpenBSD
    Network Security
    Iptables
    Unix Shell
    FreeBSD
    Snort
    Amazon EC2
    Linux
    System Monitoring
    CentOS
    Apache HTTP Server
    System Administration
  • US$45 hourly
    I have experienced coding with Python for 9+ years and ES6+ runtime for three years. I am also capable of managing Linux/BSD server.
    vsuc_fltilesrefresh_TrophyIcon Red Hat Administration
    FastAPI
    Flask
    DevOps
    DNS
    RESTful API
    Ubuntu
    Bash Programming
    API Integration
    Node.js
    cPanel
    Python
    JavaScript
    MySQL
    MongoDB
    PHP
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