IT Freelancer

System Administration
Red Hat Enterprise Linux 4.0 up to 8.4, SuSE Linux Enterprise Server up to 15, Debian, Ubuntu, CentOS, Scientific-Linux AIX, HP-UX, VMWare ESX vSphere 4, 5, ESXi Solaris 8 up to 11, SCO Unix,
NetBSD, FreeBSD, OpenBSD, NanoBSD
Novell Netware, OS/2, Citrix Server/Cluster,
Microsoft Windows Server 2003, 2008, ActiveDirectory, openLDAP, ZFS, VERITAS Netbackup
Satellite, Sendmail, Postfix
VERITAS Volume Manager, Cluster, File System

Programmiersprachen
C/C++/C#, Java, Pascal, PHP
Perl, Python, Ruby
Shell (sh, ksh, bash)

DevOps:
Ansible, Puppet, Puppet Bolt, Chef

Methoden / Tools:
HP OpenView, MC/ServiceGuard, McAfee ePolicy Orchestrator, OpenVZ, HP Quality Center, RHN, RedHat Satellite, Kickstart, ADS, PXE-boot, ITIL process, TrendMicro VirusWall

Datenbanken:
MySQL up to 5.x, MariaDB,, Oracle 9i up to 11g,
MS SQL Server 2005

Netzwerke:
LAN, WAN, TCP/IPv4, IPv6, NIS, NIS+, NFS, DNS, LDAP, SNMP, DHCP, CARP, LoadBalancing, Sendmail, Postfix, IMAP, SSL, Kerberos

Hardware:
SUN SPARC Server, SUN Blade, SUN Fire, UltraSPARC-T2, T4 IBM RS6000, pSeries, iSeries,Brocade SAN Switch,
HP 9000 A-Series, N-Series, HP SureStore Tape Library,
HP VA7410
19“ Server HP, Dell, Siemens, IBM
CISCO 650x, 5x00, 37xx, 35xx, 29xx, PIX520

Web Technologie:
Apache httpd, Tomcat 5 up to 9, nginx,
JBoss 4 up to 7, Wildfly 8 up to 2x,
IBM WebSpere, Apache Felix

Monitoring:
Nagios, Icinga, Icinga2, Splunk, Cacti, Jolokia, HP Openview, Tivoli, ELK