Various stretch-specific puppetization and operational issues for role::recursor, which encapsulates recursive DNS + NTP server functionalities have been resolved during the process of installing the new recdns boxes in eqsin and ulsfo (dns[45]00[12]). The new configuration is considerably better and it's time to upgrade the others as we're able
- eqiad - chromium
- eqiad - hydrogen
- codfw - acamar
- codfw - achernar
- esams - maerlant
- esams - nescio
Some of these are also due for hardware refresh soon, so in some cases it may make more sense to do this as part of that refresh (with the new replacement hosts taking on the standard naming scheme dnsS00N).