epostnikof/kubespray
1
0
Fork 0
mirror of https://github.com/kubernetes-sigs/kubespray.git synced 2025-12-14 13:54:37 +03:00
Code Issues Packages Projects Releases Wiki Activity

feat: allows users to have more control on DNS (#9270)

Browse Source 
Signed-off-by: eminaktas <eminaktas34@gmail.com>

Signed-off-by: eminaktas <eminaktas34@gmail.com>
This commit is contained in:
Emin AKTAS
2022-09-23 20:28:26 +03:00
committed by GitHub
parent d387d4811f
commit 9468642269
9 changed files with 45 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
docs/dns-stack.md
View File

@@ -19,6 +19,14 @@ ndots value to be used in ``/etc/resolv.conf``
It is important to note that multiple search domains combined with high ``ndots``
values lead to poor performance of DNS stack, so please choose it wisely.
## dns_timeout
timeout value to be used in ``/etc/resolv.conf``
## dns_attempts
attempts value to be used in ``/etc/resolv.conf``
### searchdomains
Custom search domains to be added in addition to the cluster search domains (``default.svc.{{ dns_domain }}, svc.{{ dns_domain }}``).
@@ -26,6 +34,8 @@ Custom search domains to be added in addition to the cluster search domains (``d
Most Linux systems limit the total number of search domains to 6 and the total length of all search domains
to 256 characters. Depending on the length of ``dns_domain``, you're limited to less than the total limit.
`remove_default_searchdomains: true` will remove the default cluster search domains.
Please note that ``resolvconf_mode: docker_dns`` will automatically add your systems search domains as
additional search domains. Please take this into the accounts for the limits.
@@ -270,7 +280,8 @@ nodelocaldns_secondary_skew_seconds: 5
* the ``searchdomains`` have a limitation of a 6 names and 256 chars
length. Due to default ``svc, default.svc`` subdomains, the actual
limits are a 4 names and 239 chars respectively.
limits are a 4 names and 239 chars respectively. If `remove_default_searchdomains: true`
added you are back to 6 names.
* the ``nameservers`` have a limitation of a 3 servers, although there
is a way to mitigate that with the ``upstream_dns_servers``,