Revert "fix: remove deprecated MINIO_ACCESS_KEY, MINIO_SECRET_KEY envs (#12173)"

This reverts commit b0baaeaa3d.

cmd/common-main.go

@@ -309,6 +309,15 @@ func handleCommonEnvVars() {
 	// in-place update is off.
 	globalInplaceUpdateDisabled = strings.EqualFold(env.Get(config.EnvUpdate, config.EnableOn), config.EnableOff)
 
+	if env.IsSet(config.EnvAccessKey) || env.IsSet(config.EnvSecretKey) {
+		cred, err := auth.CreateCredentials(env.Get(config.EnvAccessKey, ""), env.Get(config.EnvSecretKey, ""))
+		if err != nil {
+			logger.Fatal(config.ErrInvalidCredentials(err),
+				"Unable to validate credentials inherited from the shell environment")
+		}
+		globalActiveCred = cred
+	}
+
 	if env.IsSet(config.EnvRootUser) || env.IsSet(config.EnvRootPassword) {
 		cred, err := auth.CreateCredentials(env.Get(config.EnvRootUser, ""), env.Get(config.EnvRootPassword, ""))
 		if err != nil {

cmd/config/constants.go

@@ -24,6 +24,8 @@ const (
 
 // Top level common ENVs
 const (
+	EnvAccessKey    = "MINIO_ACCESS_KEY"
+	EnvSecretKey    = "MINIO_SECRET_KEY"
 	EnvRootUser     = "MINIO_ROOT_USER"
 	EnvRootPassword = "MINIO_ROOT_PASSWORD"
 

cmd/test-utils_test.go

@@ -82,6 +82,8 @@ func TestMain(m *testing.M) {
 	// disable ENVs which interfere with tests.
 	for _, env := range []string{
 		crypto.EnvKMSAutoEncryption,
+		config.EnvAccessKey,
+		config.EnvSecretKey,
 		config.EnvRootUser,
 		config.EnvRootPassword,
 	} {