Update docs/book/src/clusterctl/configuration.md

Co-authored-by: Fabrizio Pandini <[email protected]>
kubernetes-sigs · Oct 2, 2023 · aeebcfe · aeebcfe
1 parent a4ca183
commit aeebcfe
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/book/src/clusterctl/configuration.md b/docs/book/src/clusterctl/configuration.md
@@ -60,7 +60,7 @@ AWS_B64ENCODED_CREDENTIALS: XXXXXXXX
 ```
 
 The format of keys should always be `UPPERCASE_WITH_UNDERSCORE` for both OS environment variables and in the  `clusterctl`
-config file.
+config file (NOTE: this limitation derives from Viper, the library we are using internally to retrieve variables).
 
 In case a variable is defined both in the config file and as an OS environment variable,
 the environment variable takes precedence.