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Add spec.nodeName and spec.serviceAccountName to downward env var

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The serviceAccountName is occasionally useful for clients running on
Kube that need to know who they are when talking to other components.

The nodeName is useful for PetSet or DaemonSet pods that need to make
calls back to the API to fetch info about their node.

Both fields are immutable, and cannot easily be retrieved in another
way.
This commit is contained in:
Clayton Coleman
2016-06-22 12:27:17 -04:00
parent 0abda6bd74
commit e1ebde9f92
9 changed files with 63 additions and 13 deletions
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3
pkg/api/types.go
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@@ -878,7 +878,8 @@ type EnvVar struct {
// EnvVarSource represents a source for the value of an EnvVar.
// Only one of its fields may be set.
type EnvVarSource struct {
// Selects a field of the pod; only name and namespace are supported.
// Selects a field of the pod: supports metadata.name, metadata.namespace, metadata.labels, metadata.annotations,
// spec.nodeName, spec.serviceAccountName, status.podIP.
FieldRef *ObjectFieldSelector `json:"fieldRef,omitempty"`
// Selects a resource of the container: only resources limits and requests
// (limits.cpu, limits.memory, requests.cpu and requests.memory) are currently supported.