CentOs Experts zum Anheuern
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Gesponserte Freelancer
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About me I have worked over 20 years at IT and telecom companies at following positions: it support, system administrator, applications administrator and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified. I follow KISS methods. I understand OSI layer. With me is...About me I have worked over 20 years at IT and telecom companies at following positions: it support, system administrator, applications administrator and monitoring administrator expert. I am "System Administration and IT Infrastructure Services" certified. I follow KISS methods. I understand OSI layer. With me is easy to setup systems. I am not picky about what systems to use but i do have experience what to use. I know following operating systems + distros: debian, ubuntu, gentoo, suse, redhat, centos, rocky linux, almalinux and arch linux, freebsd, netbsd, openbsd, sun solaris plus ms windows servers. I also know following systems: Web servers: Apache, Nginx, Lighttpd, Litespeed, Hiawatha. Javascript: nodejs,npm Java web servers: Tomcat, Jrun, Jboss Proxy systems: Haproxy, Varnish, Squid. DB servers: MySQL (and forks, including MariaDB), PostgreSQL Mail systems: Postfix,exim,dovecot.. and implementing: DKIM, SPF, MX, DMARC. Monitoring systems: Nagios, zabbix, cacti, grafana. SMS: SMSC, Kannel DNS: Bind, Djbdns, Dnsmasq. VPS: Vmware, Hyper-v, Proxmox, bhyve, kvm, xen, openstack.. Containers: docker, lxc, jail, kubernetes Cloud providers: AWS, Digitalocean, Azure.. My knowledge does not stop here. I troubleshoot easily. Let's chat Please see my reviews of my previous works.. PS! With my bid you will get one week free support for work done weniger
servermaster
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19 Years experience as Linux/Unix Admin, System/Storage/Server Admin, Virtualization Expert => Install and troubleshoot anything on Linux/Unix, Windows => Centos, RHEL, Ubuntu, Debian, Cloudlinux, Windows => Backup, Recovery, System boot and kernel issues => Server Security and Hardening: FIREWALLD, UFW, IPTABLES,...19 Years experience as Linux/Unix Admin, System/Storage/Server Admin, Virtualization Expert => Install and troubleshoot anything on Linux/Unix, Windows => Centos, RHEL, Ubuntu, Debian, Cloudlinux, Windows => Backup, Recovery, System boot and kernel issues => Server Security and Hardening: FIREWALLD, UFW, IPTABLES, Selinux, Fixing Security vulnerabilities => User, Disk, File Management,Linux Networking/Routing, ISCSI, Multipath, LVM, Partitions => Servers: Cisco, HP, IBM, Dell, Supermicro => Hardware and Software RAID, SAN/NAS Storage => Virtualizor, KVM, Xen, ESXI, VirtualBox, VMware, Vcenter Converter => Apache, Nginx, Mysql, RDS, SSL including Letsencrypt, cPanel, Webmin, Plesk => AWS, GCP, Digital Ocean => NTP, SSH, SQUID, DHCP, BIND, Postfix, Sendmail, VNC, Kannel, HA-Lizard, DRBD, XCD-NG, RSYNC, ISCSI, Multipath, NFS, VSFTPD, Samba => WHMCS, Opencloud, Nextcloud, Zulip, OpenVPN, Polr, Odoo, Advandate, Openmeetings, TOR, Keycloak, Rocket chat, Opencanary, eSignForms, Apache Nifi weniger
kahlonkamal318
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I'm Cloud Infrastructure & DevOps Engineer with 10+ years of experience designing, building, and operating high-availability, production-grade infrastructure across cloud and on-prem environments. Specialized in Proxmox clusters, Kubernetes platforms, mail infrastructure, Linux systems engineering, automation, and...I'm Cloud Infrastructure & DevOps Engineer with 10+ years of experience designing, building, and operating high-availability, production-grade infrastructure across cloud and on-prem environments. Specialized in Proxmox clusters, Kubernetes platforms, mail infrastructure, Linux systems engineering, automation, and scalable hosting architectures. Proven track record delivering resilient infrastructure for SaaS platforms, hosting providers, and enterprise systems, including HA clusters, container platforms, CI/CD pipelines, and large-scale email delivery systems. Strong focus on performance, security hardening, automation, and operational reliability. • Advanced System Administration: Over 10 years of expertise in Linux and Windows server environments, specializing in installation, configuration, hardening, troubleshooting, performance tuning, and production maintenance. • Cloud Infrastructure Management: Proficient in AWS (EC2, RDS, EBS, S3, CloudFront, VPC, IAM) and Azure (VMs, Web Apps, Database Services, CI/CD), designing scalable, secure, and cost-optimized cloud architectures. • High Availability & Infrastructure Architecture: Strong experience designing HA and failover architectures, multi-node clusters, redundancy models, disaster recovery strategies, and resilient production platforms. • Virtualization Technologies: Extensive hands-on experience with Proxmox VE, VMware ESXi, KVM, Xen, VirtualBox, OpenStack, and cluster-based virtualization platforms. • Containerization & Orchestration: Skilled in Docker and Kubernetes multi-node clusters, Rancher management, Ingress controllers, MetalLB, and container-based production deployments. • DevOps & CI/CD Automation: Experienced in building CI/CD pipelines using GitHub Actions and automation scripts, enabling reliable and repeatable deployment workflows. • Infrastructure Automation & Scripting: Strong automation background using Bash scripting and configuration automation to streamline provisioning, monitoring, and operational tasks. • Networking & Secure Connectivity: Strong knowledge of LAN/WAN/VLAN design, private networking, VPN technologies (WireGuard, SoftEther), firewall deployment, and secure access architecture. • Database Platforms: Skilled in MySQL, MariaDB Galera clusters, and PostgreSQL, including replication, clustering, failover, and performance tuning. • Web & Hosting Platforms: Extensive experience managing web hosting stacks, control panels (cPanel, Plesk, CWP, CyberPanel, VestaCP), and multi-tenant hosting environments. • Security & Hardening: Strong experience in server hardening, firewall configuration (pfSense, Sophos, Kerio), intrusion detection, vulnerability mitigation, and application security practices. • Monitoring & Performance Optimization: Proven ability to monitor system KPIs, analyze logs, troubleshoot bottlenecks, and optimize infrastructure performance under production load. weniger
mrkimoz
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hello, I am a Cisco Certified Internetwork Expert CCIE#46063 R&S with a UK based education , I have 13 years of extensive IP networking experience, designing, implementing and supporting large service provider networks as well as enterprise networkshello, I am a Cisco Certified Internetwork Expert CCIE#46063 R&S with a UK based education , I have 13 years of extensive IP networking experience, designing, implementing and supporting large service provider networks as well as enterprise networks weniger
ccie7
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In The Name Of Allah | My Portfolio: *Removed by Freelancer.com* With over a decade of experience as a System Administrator and Developer, I possess extensive expertise in Problem-Solving and have made significant contributions to several prominent IT forums. As a skilled problem solver, I have both the requisite...In The Name Of Allah | My Portfolio: *Removed by Freelancer.com* With over a decade of experience as a System Administrator and Developer, I possess extensive expertise in Problem-Solving and have made significant contributions to several prominent IT forums. As a skilled problem solver, I have both the requisite knowledge and practical experience to offer optimal solutions to your issues. Expertise: - System Administration: Debian, Ubuntu, CentOS, Windows, AWS, WHM, cPanel, Virtualizor, WHCMS, Windows Server, Google Cloud, Azure, AWS, DirectAdmin, ISPConfig, Virtualmin, DirectAdmin - Server Setup and Installation: Web Server, Email Server including DNS, Exim4, Postfix - Game Development: Unity - Web Development: PHP, JavaScript, React, jQuery, Laravel, HTML, CSS, XML, React, Laravel, Codeigniter, Angular - 3D Modeling: 3D Max - Program Development: Java, .Net, C++, Python - Audio Editing: Adobe Audition - Video Editing: Adobe Primer and Adobe After Effect - Forum Development: MyBB forum owner, Xenforo, phpBB, vBulletin, NodeBB - Forum Plugin Development - Expert website software and forum software converter - Mobile App Development: Java on Android Studio (over 3 years of experience), Cordova Developer, Cordova Plugin Developer, React Native - Website Converter: Custom Script to WordPress and Forum Converter and Merger - Web Scraping: Java, scraping thousands of products and exporting them into Excel sheets, Instagram scraping - API REST Client Development: Google API, Binance API, Java, PHP, JavaScript, curl, JSONRpc, Distance Matrix API, OnlyOffice, Guacamole, reCAPTCHA, GraphQL, Twilio - QR Code, Barcode, DataMatrix Pure JS - Database: MySQL, SQL, MongoDB, MariaDB (restoring database from ibd and frm files) - Discord Bots, Discord Manager, NFT Discord Moderator, Discord Server Administrator - Translation: English, Arabic, and Kurdish (native Kurdish speaker) - Apache Guacamole Developer - WordPress: DIVI, Portfolio, E-commerce, Advanced Ads - Google: AdSense, Analytic, AdMob - Nexopos, ePOS JS SDK - Proxy: Squid, Dante-Server, 3Proxy - SuiteCRM - AI (Hugging Face, DreamShaper, DeepSeek, DeepSeek Coder, n8n ) Conclusion: If you have a problem, I have the means and experience to provide you with the best possible solution. weniger
BryarGH
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Your best investment in time and money starts here. I am a Senior Full Stack Engineer and AWS Architect specializing in backend systems, cloud infrastructure, DevOps, and AI-driven platforms. I build scalable, secure, and production-ready solutions for startups and growing businesses. In addition to core platform...Your best investment in time and money starts here. I am a Senior Full Stack Engineer and AWS Architect specializing in backend systems, cloud infrastructure, DevOps, and AI-driven platforms. I build scalable, secure, and production-ready solutions for startups and growing businesses. In addition to core platform engineering, I also deliver data-driven SEO solutions and automated trading systems, applying the same engineering discipline—performance, reliability, and security. I work end to end—from architecture design and backend development to deployment, optimization, and automation. If you need a senior engineer who can design, build, and optimize complex systems, I’m ready to help. Core Engineering Services - Full Stack & Backend Development (Python, FastAPI, Django, Node.js, React) - Cloud Architecture & Infrastructure (AWS, Azure, GCP) - DevOps, CI/CD, and Linux Server Configuration - REST & GraphQL API Development - AI Systems & RAG-Based Architectures - SQL Database Design & Performance Optimization Specialized / Optional Services - Technical SEO & Automation (performance, crawling, indexing) - Trading Bots & Indicators (Forex, Binary Options, MetaTrader) - Web Scraping & Data Ingestion Pipelines - SaaS Integration & System Automation - Website Performance & Speed Optimization - Security Setup (SSL, reverse proxy, CDN) - Raspberry Pi & Arduino custom script I’m an experienced engineer with strong expertise in Python, PHP, MySQL, HTML, CSS, C, C++, Perl, Java, cybersecurity, and both Linux and Windows environments. I genuinely enjoy working with code — exploring systems deeply, solving complex problems, and crafting clean, efficient solutions grounded in solid computer science principles. I take pride in my work and approach every project with professionalism, ownership, and attention to detail. P.S. The “10x programmer” isn’t a myth — they do exist. 🙂 weniger
gunslinger
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I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise...I bring over 15 years of extensive experience in the fields of system administration and DevOps, making me a seasoned professional in managing and optimizing IT infrastructures. With a strong foundation in virtualization technologies, I excel in creating efficient and scalable virtualized environments. My expertise extends to a wide range of Linux systems, and I am well-versed in handling various distributions, ensuring their stability, security, and performance. I have a proven track record of successfully deploying web applications, guaranteeing smooth and reliable online experiences for users. One of my core strengths lies in managing system updates and applying security patches promptly, reducing vulnerabilities and minimizing downtime. My commitment to network security is unwavering, and I implement robust measures to protect data and maintain the integrity of systems. Furthermore, my proficiency in Cisco networking solutions allows me to design, configure, and troubleshoot complex network infrastructures, ensuring seamless connectivity and optimal performance. Additionally, I have a solid understanding of <b> HPE (Hewlett Packard Enterprise) </b>equipment, enabling me to efficiently manage and maintain these devices to meet organizational needs. With my extensive knowledge, practical experience, and dedication to staying updated with the latest industry trends, I am well-equipped to contribute significantly to any organization's IT operations, ensuring they run smoothly, securely, and efficiently. weniger
rupa37
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I am full-stack developer with 6 years of experience. I am IBM Certified Professional Developer - Cloud v5. I love to write clean code always. I have vast experience and spend time every day learning new frameworks. My goal will always be to satisfy your requirements. Needless to say, I do all the work by myself,...I am full-stack developer with 6 years of experience. I am IBM Certified Professional Developer - Cloud v5. I love to write clean code always. I have vast experience and spend time every day learning new frameworks. My goal will always be to satisfy your requirements. Needless to say, I do all the work by myself, never subcontracting any project or tasks. My skills are: ✔ Wordpress ✔ Web development ✔ PHP -Services- *Communication for every day and delivering good quality source code. *Maintaining for a month after development. weniger
myGigs
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I have 8 years of Experience as a System Administrator and expert in Linux, Asterisk, vicidial and openvpn.I have 8 years of Experience as a System Administrator and expert in Linux, Asterisk, vicidial and openvpn. weniger
ameer89898
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I am a Linux & Cloud Infrastructure Engineer with a strong focus on production server administration, security hardening, and performance optimization. Certified through the full LPI track (Linux Essentials, LPIC-1, LPIC-2, LPIC-3 Security) and CompTIA Security+, I work with live Linux environments across VPS,...I am a Linux & Cloud Infrastructure Engineer with a strong focus on production server administration, security hardening, and performance optimization. Certified through the full LPI track (Linux Essentials, LPIC-1, LPIC-2, LPIC-3 Security) and CompTIA Security+, I work with live Linux environments across VPS, dedicated servers, and cloud platforms. My expertise includes: • Linux server deployment and administration (Ubuntu, Debian, AlmaLinux, CentOS) • Cloud infrastructure management (AWS, VPS hosting) • Advanced networking and firewall configuration • SSH security, access control, and VPN setup • System hardening and security auditing • Performance tuning and resource optimization • Server recovery, troubleshooting, and incident response I approach every issue methodically — identifying root causes, securing vulnerabilities, restoring stability, and implementing preventive measures to avoid future failures. Whether the problem is downtime, misconfiguration, performance bottlenecks, or a compromised server, I deliver structured, production-safe solutions with clear communication and professional execution. weniger
ahmadarajaa
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