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add some detailed message for dup container ports(steal from thockin)

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This commit is contained in:
Paco Xu
2023-07-12 16:39:03 +08:00
parent 7a80d7c839
commit df0d51d3b3
2 changed files with 74 additions and 51 deletions
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53
pkg/api/pod/warnings.go
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@@ -255,30 +255,38 @@ func warningsForPodSpecAndMeta(fieldPath *field.Path, podSpec *api.PodSpec, meta
return true
})
type portBlock struct {
field *field.Path
port api.ContainerPort
}
// Accumulate ports across all containers
allPorts := map[string]portBlock{}
allPorts := map[string][]portBlock{}
pods.VisitContainersWithPath(podSpec, fieldPath.Child("spec"), func(c *api.Container, fldPath *field.Path) bool {
for i, port := range c.Ports {
k := fmt.Sprintf("%d/%s", port.ContainerPort, port.Protocol)
if other, found := allPorts[k]; found {
// Someone else has this protcol+port, but it still might not be a conflict.
conflict := false
// Exact matches are obvious.
if port.HostIP == other.port.HostIP && port.HostPort == other.port.HostPort {
conflict = true
}
// Unspecified fields are more subtle.
if port.HostPort == 0 || other.port.HostPort == 0 || port.HostIP == "" || other.port.HostIP == "" {
conflict = true
}
if conflict {
warnings = append(warnings, fmt.Sprintf("%s: duplicate container port %d/%s, conflicts with %s",
fldPath.Child("ports").Index(i), port.ContainerPort, port.Protocol, other.field))
continue
}
if port.HostIP != "" && port.HostPort == 0 {
warnings = append(warnings, fmt.Sprintf("%s: hostIP set without hostPort: %+v",
fldPath.Child("ports").Index(i), port))
}
k := fmt.Sprintf("%d/%s", port.ContainerPort, port.Protocol)
if others, found := allPorts[k]; found {
// Someone else has this protcol+port, but it still might not be a conflict.
for _, other := range others {
if port.HostIP == other.port.HostIP && port.HostPort == other.port.HostPort {
// Exactly-equal is obvious. Validation should already filter for this except when these are unspecified.
warnings = append(warnings, fmt.Sprintf("%s: duplicate port definition with %s", fldPath.Child("ports").Index(i), other.field))
} else if port.HostPort == 0 || other.port.HostPort == 0 {
// HostPort = 0 is redundant with any other value, which is odd but not really dangerous. HostIP doesn't matter here.
warnings = append(warnings, fmt.Sprintf("%s: overlapping port definition with %s", fldPath.Child("ports").Index(i), other.field))
} else if a, b := port.HostIP == "", other.port.HostIP == ""; port.HostPort == other.port.HostPort && ((a || b) && !(a && b)) {
// If the HostPorts are the same and either HostIP is not specified while the other is not, the behavior is undefined.
warnings = append(warnings, fmt.Sprintf("%s: dangerously ambiguous port definition with %s", fldPath.Child("ports").Index(i), other.field))
}
}
allPorts[k] = append(allPorts[k], portBlock{field: fldPath.Child("ports").Index(i), port: port})
} else {
allPorts[k] = []portBlock{{field: fldPath.Child("ports").Index(i), port: port}}
}
allPorts[k] = portBlock{field: fldPath, port: port}
}
return true
})
@@ -302,11 +310,6 @@ func warningsForPodSpecAndMeta(fieldPath *field.Path, podSpec *api.PodSpec, meta
return warnings
}
type portBlock struct {
field *field.Path
port api.ContainerPort
}
func warningsForPodAffinityTerms(terms []api.PodAffinityTerm, fieldPath *field.Path) []string {
var warnings []string
for i, t := range terms {