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 (134.76.10.46) is configured as cluster and will be unavailable for very few seconds only during failover between the cluster members. The backup DNS servers ns2 (134.76.33.21) 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).

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