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Clarify error message when a .cert file is missing a corresponding key

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The daemon uses two similar filename extensions to identify different
kinds of certificates. ".crt" files are interpreted as CA certificates,
and ".cert" files are interprted as client certificates. If a CA
certificate is accidentally given the extension ".cert", it will lead to
the following error message:

    Missing key ca.key for certificate ca.cert

To make this slightly less confusing, clarify the error message with a
note that CA certificates should use the extension ".crt".

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This commit is contained in:
Aaron Lehmann 2016-01-20 10:53:41 -08:00
parent 981a573eaf
commit 0e06c1cad1
1 changed files with 2 additions and 2 deletions
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4
docs/registry.go
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@ -109,7 +109,7 @@ func ReadCertsDirectory(tlsConfig *tls.Config, directory string) error {
keyName := certName[:len(certName)-5] + ".key" keyName := certName[:len(certName)-5] + ".key"
logrus.Debugf("cert: %s", filepath.Join(directory, f.Name())) logrus.Debugf("cert: %s", filepath.Join(directory, f.Name()))
if !hasFile(fs, keyName) { if !hasFile(fs, keyName) {
return fmt.Errorf("Missing key %s for certificate %s", keyName, certName) return fmt.Errorf("Missing key %s for client certificate %s. Note that CA certificates should use the extension .crt.", keyName, certName)
} }
cert, err := tls.LoadX509KeyPair(filepath.Join(directory, certName), filepath.Join(directory, keyName)) cert, err := tls.LoadX509KeyPair(filepath.Join(directory, certName), filepath.Join(directory, keyName))
if err != nil { if err != nil {
@ -122,7 +122,7 @@ func ReadCertsDirectory(tlsConfig *tls.Config, directory string) error {
certName := keyName[:len(keyName)-4] + ".cert" certName := keyName[:len(keyName)-4] + ".cert"
logrus.Debugf("key: %s", filepath.Join(directory, f.Name())) logrus.Debugf("key: %s", filepath.Join(directory, f.Name()))
if !hasFile(fs, certName) { if !hasFile(fs, certName) {
return fmt.Errorf("Missing certificate %s for key %s", certName, keyName) return fmt.Errorf("Missing client certificate %s for key %s", certName, keyName)
} }
} }
} }