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Ability to define options for DNS upstream servers (#9311)

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* Ability to define options for DNS upstream servers

* Doc and sample inventory vars
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emiran-orange
2022-11-08 15:44:25 +01:00
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commit 5c25b57989
6 changed files with 32 additions and 10 deletions
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docs/dns-stack.md
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@@ -50,6 +50,12 @@ is not set, a default resolver is chosen (depending on cloud provider or 8.8.8.8
DNS servers to be added *after* the cluster DNS. Used by all ``resolvconf_mode`` modes. These serve as backup
DNS servers in early cluster deployment when no cluster DNS is available yet.
### dns_upstream_forward_extra_opts
Whether or not upstream DNS servers come from `upstream_dns_servers` variable or /etc/resolv.conf, related forward block in coredns (and nodelocaldns) configuration can take options (see <https://coredns.io/plugins/forward/> for details).
These are configurable in inventory in as a dictionary in the `dns_upstream_forward_extra_opts` variable.
By default, no other option than the ones hardcoded (see `roles/kubernetes-apps/ansible/templates/coredns-config.yml.j2` and `roles/kubernetes-apps/ansible/templates/nodelocaldns-config.yml.j2`).
### coredns_external_zones
Array of optional external zones to coredns forward queries to. It's injected into