AWS now provides ipv6 DNS server endpoint at a fixed address (rather than ipv4, which depends on the VPC CIDR block). This isn't provided in dhcp, and anyways we want to ensure we use this endpoint in ipv6 mode and not have ipv4 in the mix.
As per
3b17e06879,
node-local-dns addon is now builded with latest coreDNS base v1.8 and
that brings great consistency between cache and upstream servers in a
manner of configuration, metrics name convention, etc.
So in this commit, we bump node-local-dns image to latest v1.20.0 which
is build upon latest coreDNS and also add support for overriding this
field.
Signed-off-by: dntosas <ntosas@gmail.com>
User reports of kubelet flags not being passed; moved more to code.
Also found & fixed the likely root-cause issue: we have two copies of
the cluster spec and were not being precise about which one we wanted to
use at all times.