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Make kubelet expand var refs in cmd, args, env

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This commit is contained in:
Paul Morie
2015-05-22 18:21:03 -04:00
parent ee82d469c6
commit 8b338860aa
14 changed files with 513 additions and 84 deletions
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16
pkg/api/types.go
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@@ -541,7 +541,13 @@ type EnvVar struct {
// Required: This must be a C_IDENTIFIER.
Name string `json:"name"`
// Optional: no more than one of the following may be specified.
// Optional: Defaults to "".
// Optional: Defaults to ""; variable references $(VAR_NAME) are expanded
// using the previous defined environment variables in the container and
// any service environment variables. If a variable cannot be resolved,
// the reference in the input string will be unchanged. The $(VAR_NAME)
// syntax can be escaped with a double $$, ie: $$(VAR_NAME). Escaped
// references will never be expanded, regardless of whether the variable
// exists or not.
Value string `json:"value,omitempty"`
// Optional: Specifies a source the value of this var should come from.
ValueFrom *EnvVarSource `json:"valueFrom,omitempty"`
@@ -640,8 +646,16 @@ type Container struct {
// Required.
Image string `json:"image"`
// Optional: The docker image's entrypoint is used if this is not provided; cannot be updated.
// Variable references $(VAR_NAME) are expanded using the container's environment. If a variable
// cannot be resolved, the reference in the input string will be unchanged. The $(VAR_NAME) syntax
// can be escaped with a double $$, ie: $$(VAR_NAME). Escaped references will never be expanded,
// regardless of whether the variable exists or not.
Command []string `json:"command,omitempty"`
// Optional: The docker image's cmd is used if this is not provided; cannot be updated.
// Variable references $(VAR_NAME) are expanded using the container's environment. If a variable
// cannot be resolved, the reference in the input string will be unchanged. The $(VAR_NAME) syntax
// can be escaped with a double $$, ie: $$(VAR_NAME). Escaped references will never be expanded,
// regardless of whether the variable exists or not.
Args []string `json:"args,omitempty"`
// Optional: Defaults to Docker's default.
WorkingDir string `json:"workingDir,omitempty"`