Administration of servers (Linux servers: CentOS, Debian, Red Hat, Suse, etc)
Administration of VPS Servers (OS install, setup, configuration, security, management etc)
Configurations & Maintenance of the following linux services: Mail (qmail, exim, postfix), MySQL, MariaDB, Apache, DNS (bind), VPN (openVPN, pptpd, softether VPN), iptables firewall, CSF Firewall, CXS Scanner, Maldet, MailScanner, Munin, haproxy, nginx, cpnginx
Server monitoring: Zabbix, Nagios, Cacti, Icinga2, Kibana, Grafana, Beats
Server Virtualization: vmWare, KVM, OpenVZ, ProxMox, OpenNebula, CoreOS, Docker, Kubernetes, OpenVZ
Load balancing: Haproxy, NGINX
Caching: NGINX, Varnish
Install/Configure/Maintain/Admin Linux services & applications: Apache, PHP, PhpMyAdmin, MySQL, Email server config (support for SPF, DKIM, DMARC, rDNS)
Install/Configure/Administration of cPanel/WHM, Virtualmin/Webmin, CWP, VestaCP, KloxoMR, PLESK
Website/APP migration: Wordpress, Joomla, Magento, PrestaShop, ODOO (any version), CMS etc