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Promote ExpandedDNSConfig feature to the GA stage

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This commit is contained in:
Gunju Kim
2023-03-19 19:25:23 +09:00
parent fb5e90e5d7
commit b249b4ca9b
7 changed files with 42 additions and 502 deletions
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24
pkg/apis/core/validation/validation.go
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@@ -3399,14 +3399,10 @@ const (
// restrictions in Linux libc name resolution handling.
// Max number of DNS name servers.
MaxDNSNameservers = 3
// Expanded max number of domains in the search path list.
MaxDNSSearchPathsExpanded = 32
// Expanded max number of characters in the search path.
MaxDNSSearchListCharsExpanded = 2048
// Max number of domains in the search path list.
MaxDNSSearchPathsLegacy = 6
// Max number of characters in the search path list.
MaxDNSSearchListCharsLegacy = 256
MaxDNSSearchPaths = 32
// Max number of characters in the search path.
MaxDNSSearchListChars = 2048
)
func validateReadinessGates(readinessGates []core.PodReadinessGate, fldPath *field.Path) field.ErrorList {
@@ -3455,16 +3451,12 @@ func validatePodDNSConfig(dnsConfig *core.PodDNSConfig, dnsPolicy *core.DNSPolic
}
}
// Validate searches.
maxDNSSearchPaths, maxDNSSearchListChars := MaxDNSSearchPathsLegacy, MaxDNSSearchListCharsLegacy
if opts.AllowExpandedDNSConfig {
maxDNSSearchPaths, maxDNSSearchListChars = MaxDNSSearchPathsExpanded, MaxDNSSearchListCharsExpanded
}
if len(dnsConfig.Searches) > maxDNSSearchPaths {
allErrs = append(allErrs, field.Invalid(fldPath.Child("searches"), dnsConfig.Searches, fmt.Sprintf("must not have more than %v search paths", maxDNSSearchPaths)))
if len(dnsConfig.Searches) > MaxDNSSearchPaths {
allErrs = append(allErrs, field.Invalid(fldPath.Child("searches"), dnsConfig.Searches, fmt.Sprintf("must not have more than %v search paths", MaxDNSSearchPaths)))
}
// Include the space between search paths.
if len(strings.Join(dnsConfig.Searches, " ")) > maxDNSSearchListChars {
allErrs = append(allErrs, field.Invalid(fldPath.Child("searches"), dnsConfig.Searches, fmt.Sprintf("must not have more than %v characters (including spaces) in the search list", maxDNSSearchListChars)))
if len(strings.Join(dnsConfig.Searches, " ")) > MaxDNSSearchListChars {
allErrs = append(allErrs, field.Invalid(fldPath.Child("searches"), dnsConfig.Searches, fmt.Sprintf("must not have more than %v characters (including spaces) in the search list", MaxDNSSearchListChars)))
}
for i, search := range dnsConfig.Searches {
// it is fine to have a trailing dot
@@ -3688,8 +3680,6 @@ type PodValidationOptions struct {
AllowInvalidLabelValueInSelector bool
// Allow pod spec to use non-integer multiple of huge page unit size
AllowIndivisibleHugePagesValues bool
// Allow more DNSSearchPaths and longer DNSSearchListChars
AllowExpandedDNSConfig bool
// Allow invalid topologySpreadConstraint labelSelector for backward compatibility
AllowInvalidTopologySpreadConstraintLabelSelector bool
// Allow node selector additions for gated pods.