I am a certified RedHat Linux System Engineer with extensive experience in all facets of server configuration, maintenance, and monitoring. I can provide expert assistance with all flavors of Linux OS: RHEL-like, Debian-like, Gentoo, Windows Virtualization technology: OpenVZ, Qemu-KVM, ESX(i), OpenStack, Proxmox Cloud solutions: Openstack deployment, support and monitoring OwnCloud: installation, configuration and integration with LDAP, WHMCS and e-mail High-Availability (Failover technology) : heartbeat Load balancing: Linux Virtual Servers, HAProxy Server monitoring: Nagios, Zabbix, Icinga, Graphite, Grafana + own plugins for custom checks Web Server - Apache HTTP, Apache/Tomcat, Nginx, Lighthttpd Network and protocols: OpenVPN, Tunneling, Proxy, VNC, DHCP, DNS, VLAN, policy routing, iptables, OSPF Hosting: WHM, WHMCS WHMCS: script creating, completing of modules, integration with other systems (LDAP, ownCloud) VoIP: Asterisk, Elastix, PBX Configuration Management: Puppet DBMS: MySQL Backup systems: Bacula deployment, scripting, support and monitoring Scripting languages: PHP, Bash, Python