Maintainance: GWDG’s DNS- und DHCP-Server on 21.01.2016

Message-Id: 201601201530
Time: Thursday, 21.01.2016, 17:00 – 19:00 Uhr
Affected: GWDG’s DNS- und DHCP-Server
Impact: The primary DNS server and DHCP server gwdu01 ( is configured as cluster and will be unavailable for very few seconds only during failover between the cluster members. The backup DNS servers ns2 ( and ns3 (in Berlin) will be unavailable consecutively during around 30 minutes (but they are backup only for the case, that the primary is not available).

A system upgrade of the DNS/DHCP server will be installed together with security patches.