Hello, my name is Andrii. In my childhood, I spent a lot of time with a soldering iron, making different interesting things. At high school, I got a PC at home and started... Dos, Win, Linux, FreeBSD. At the present time, I have more than 20 years of Win experience and more than 16 years of *nix experience. I like to build systems and solve interesting issues. OS - FreeBSD, Linux (CentOS, Alma, Rocky, RHEL, Ubuntu, Debian, Gentoo, etc), Windows (3.1-2019) Virtualization - vSphere 5.x, 6.x. Standalone ESXi and clusters with SAN storages (iSCSI). KVM, Proxmox, oVirt. Veeam BnR, XSI-backup. VmWare Workstation, VirtualBox. Web servers - Apache, Nginx, Lighttpd, Tomcat DB servers - MySQL, MariaDB, Postgresql, MongoDB Mail - Postfix, Courier/Dovecot/Cyrus, Rspamd, Postgrey, Clamav, PostfixAdmin, SquirrelMail, Roundcube, Sendy, AWS SES. I have experience with WHM/cPanel, Plesk, VestaCP, Virtualmin, ISPmanager, but I don't like control panels (most projects are optimized for best performance, and there is no place for CP). If needed, I can learn and work with any control panel. Samba3+LDAP, Samba4 domains (about 500 user accounts, GPO, Roaming profiles, a lot of other stuff). Standalone samba servers. Docker, docker-compose, Jenkins, Ansible. FreeNAS, TrueNas. Squid (LDAP auth, AD auth, basic auth, Kerberos), FTP, SFTP, DHCPD, BIND, TFTP, DAViCal, tinc, mpd5, quagga, BGP, NFS, rsync, snapshot, rclone, Zabbix, SVN, GIT, Moodle, NextCloud, OnlyOffice, BigBlueButton, Caddy, etc. Dell servers, Dell PowerVault MD storages, HP servers, SuperMicro servers, and usual PC hardware. HP, 3Com, Dell switches, no Cisco experience. DD-WRT, including cross-compiling software from sources for this firmware for ARM arch. Shell, PHP scripting I have a lot of other expertise. Feel free to ask.

I am system administrator with 15 years experience. I have solid technical skills in various areas of IT operations/administration: - DevOps (automatic provision using SaltStack, Ansible); - Linux (CentOS, Debian, Ubuntu, RHEL) and FreeBSD maintenance; - Cloud hosting (AWS, Azure, DigitalOcean); - Virtualization: (Docker, VirtualBox, Vagrant, OpenVZ); - Web servers (apache, nginx); - Databases (MySQL, PostgresQL, Mongo); - Monitoring (Zabbix) - Bash programming; - Mail servers (postfix, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot); - Networking (DHCP, DNS, VPN, OpenVPN, firewalls: iptables/ipfw, proxies) I familiar with ITIL, incident management and business continuity planning.

Based on my 30 years of experience in the field of IT, i am able to complete complex tasks of high difficulty. Working in international corporations allowed me to have a practice with productive and expensive systems. Contracts in the banking sector has taught confidentiality and responsibility and the importance of trust. My main qualification is in system administration. From the direct assembly of the server to the configuration of the operating system. Therefore i have expert knowledge of operation systems Windows\UNIX. Server OS: Microsoft Windows server, RedHat, Ubuntu, CentOS, PopOS, Debian, other Linux.. Cloud: Amazon Web Services AWS, Google cloud GCP, Oracle cloud, Microsoft Azure, IBM cloud.. Hosters: Digital Ocean, Hetzner.. Virtualization: Hyper-V, VMWare, VirtualBox, KVM, Proxmox.. Emergency problem resolving. Web, VPN, VPS, Cloud, Virtualization. Hardware troubleshoting and repair. Security networking. Infrastructure protection. BIOS\FW recovering, updating.

I'm a linux sysadmin and have worked in a web hosting company for more than eight years and now doing a full-time sysadmin consulting.  I handle servers from co-locations/data centers to different vps and cloud hosting providers such as Rackspace, Amazon, Linode, DigitalOcean, and Softlayer.  I managed mostly lamp-stack servers on CentOS/RHEL and Debian/Ubuntu and several cPanel/WHM servers for shared hosting clients.  I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc.   Operating Systems: - Servers: RHEL, CentOS, Debian, Ubuntu, openSUSE, solaris Cloud and Hosting Providers: - Manage instances deployed in Rackspace, Amazon, and Linode - Manage dedicated servers in datacenter co-locations and Softlayer Virtualization and Cloud technologies: - Xen: setup, configure, and manage virtual machines running Debian and CentOS -openvz : setup, configure, manage and migrate virtual machines running on CentOS - OpenStack and Eucalyptus: setup, configure, and manage private cloud deployments Hosting Control Panels: - Manage multiple cPanel servers for shared hosting clients and services - Previous experiences include Plesk, zpanel, directadmin, and Webmin control panels DNS: -- Manage DNS cluster on Cpanel DNSOnly versions. Manage zones hosted and integrated with Cpanel servers. - Manage Bind DNS service on dedicated and Cpanel servers (WHM and DNSOnly versions). Manage zones hosted at Softlayer and integrated with Cpanel servers - Managed DNS from different hosting providers (Godaddy, NetworkSolutions, SRSPlus) as well as migrating entire DNS/NameServers between different providers.  Backups: - Cpanel Backups, and different rsync scripts (rsnapshot, rsback, rdiff), remote ftp backup. - Administer backups from cloud providers such as AmazonS3 and Rackspace CloudBackup Version Control Systems: - Git: setup and manage dedicated git hosting server running Gitolite and Gitlab - Github: manage organizations and private repositories. Setup deploy keys and webhooks Alerts and Monitoring: - Configure Nagios/opesview and cacti for servers and services monitoring - Server graphing with NewRelic and Pingdom services. Previous work experience includes Cacti, Graphite, MRTG, and PRTG. Drupal CMS Administration: - Managed Drupal 5,6, and 7 sites on LAMP-stack from different hosting providers - Drupal server and site performance evaluation, tuning, and optimizations - Setup and configure Drupal integration with CiviCRM, ApacheSolr/Tomcat, Memcached, APC, and Varnish - Applies Drupal standard and security updates on different site environments Server Security: - Experienced with setting up PCI Compliant servers. Scanning tools include dedicated Nessus server and third-party scanner like Trustwave and ControlScan - Setup and manage firewall rules with iptables, ufw, configserver firewall (csf), Rackspace RackConnect, AWS SecurityGroups, dedicated firewall devices.  - Rkhunter, Chkrootkits, SSHD, TCP Wrapper, fail2ban.

✅ Redhat Certified ✅ DevOps ✅ cPanel/WHM ✅ AWS/GCP/AZURE ✅ Ubuntu/CentOS Linux Server Administrator with more than 9 years of experience . Areas of expertise: *RHCSA RHCE Redhat Certified Professional * Site Setup, Optimization and Migration Support for Wordpress, Joomla, Magento, Xcart, Opencart based websites * Amazon Web Services, G-Cloud , OVH, BlueHost, CloudWays, Digital Ocean, Godday, Hostgator, Linode, Media Temple - Hosting Setup and Management. * Apache, IIS, Nginx, Tomcat, Varnish, Mod_pagespeed, php-fpm * Control Panel: Cpanel, WHM, Plesk, Ensim, Webmin, Virtualmin, AWS, Azure, g-cloud * OS: CentOS, Debian, RHEL, Ubuntu * Mail Server: Exim, Postfix, Sendmail, PowerMTA, InterSpire, Sendgrid * Database: Mariadb, MySQL, mongoDB * DNS: Domain management, MX, CNAME, SPF, DKIM, TXT, Cloudflare

More than 11+ year previous experience in Linux/Hosting/Sysadmin job my primary experience (daily tasks) server setup/migration/transfer, server configuration, server optimization, server troubleshooting, website transfer/migration, website ssl install, ssl renew, mail delivery related problems Ability to work flexible hours Solid working knowledge of RPM/DEB based Linux Distributions: RHEL, CentOS, Oracle Linux, Fedora, Debian, Ubuntu, ArchLinux Experience with AWS, RackSpace, DigitalOcean, Singlehop, Hetzner, OVH, Godaddy Experience with Shared Hosting : JustHost, BlueHost, Hostgator, Godaddy, a2hosting, fatcow Control Panels: cPanel & WHM, Plesk, DirectAdmin, Webmin, Virtualmin Software: Apache, Nginx, PHP-FPM, BIND, DHCP, Dovecot, Exim, Postfix, MySQL, iptables Design of High Availability/High-Performance services and architectures

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

A dynamic IT professional with over 14 years of extensive experience in Linux System Administration and Consultancy on Technical Support, Web Hosting and Cloud Management. Web Hosting Control Panel :: WHM/cPanel, Plesk, CWP, CyberPanel, VirtualMin, Webuzo, zPanel. Automation Tools : Ansible, Terraform CI/CD Pipeline : Bamboo, Jenkins, Bit bucket, AWS Code Pipeline, AWS Code Deploy, Azure DevOps Operating System : RedHat, Centos, Ubuntu, Debian, CloudLinux, AlmaLinux, Virtualizor Virtualization :: Vmware ESXi, XCP-Ng, Proxmox, KVM, SolusVM, Strong Administration skills:- ✔AWS Cloud ✔ AWS key services: EC2, S3, CloudFront, Route53, VPCs, ELB, RDS, Cloud Formation, ✔ GOOGLE Cloud ✔ Kubernetes ✔ Ansible ✔ Terraform ✔ DigitalOcean Cloud ✔ Apache Web Server ✔ MYSQL Database ✔ Mail Server ✔ Zimbra ✔ DNS Server ✔ Nginx Web Server ✔ Apache Tomcat Server ✔ XEN ✔ VMware ESXi Virtualization ✔ KVM Virtualization ✔ EXIM Mail ✔ WHM/cPanel, Plesk ✔ Mass/Bulk Mailing server for Email Marketing ✔ Apache and Nginx Replication/Clustering ✔ HAProxy Load-Balancer ✔ BackupMx and MXGATEWAY server

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.

I provide a broad range of system administration services covering everything needed for classic, virtual & cloud environments. Services include: installation, initial setup, designing highly scalable systems, optimization, security hardening/auditing, monitoring, website/server migrations. I am responsible, result oriented and always stick to deadlines. Some of my areas of expertise include: - Linux ( RHEL, CentOS, Ubuntu, Debian ) - Automation ( CHEF, Ansible, Terraform ) - Virtualization (Docker, ESXi, KVM, K8S, EKS) - Database Administration (MySQL,PostgreSQL, MariaDB, MongoDB) - DNS Server (Bind, NSD, PowerDNS ) - Web Server (LAMP, LEMP, HAproxy) - Email ( Postfix, Exim, SPF, DKIM ) - Monitoring ( AppDynamics, ELK, Nagios, Zabbix, Prometheus, Grafana, Graylog, Splunk ) - Bash Script, Python, PHP, JavaScript, WordPress, GIT - WHM/Cpanel, Plesk, Virtualmin/Webmin etc. - AWS, GCP, Digitalocean, Linode etc