add environment variables documention, refactor kubeconfig env key

README.md

@@ -17,7 +17,7 @@ command call.
 
 Check the [releases](https://github.com/dbschenker/vaultpal/releases) section for the most recent binaries that are suitable for your operating system.
 
-Please note that vaultpal has been thoroughly tested on MacOS (`*darwin` binaries) and Linux, but not on Windows. 
+Please note that vaultpal has been thoroughly tested on macOS (`*darwin` binaries) and Linux, but not on Windows. 
 The binary should execute without issues, but there may be subtle differences, e.g. in the handling of file locations.
 Alternatively, consider [Windows Subsystem for Linux](https://docs.microsoft.com/de-de/windows/wsl/install-win10).
 
@@ -182,7 +182,7 @@ with data:
   "server": "https://api.bibi.mytopic.com"
 }
 ```
-#### Cluster Alias
+### Cluster Alias
 
 vaultpal supports the definition of an alias to a kubernetes cluster. This is useful if you want to use a generic
 endpoint like "int" or "prod" pointing to a cluster.
@@ -200,6 +200,14 @@ with data:
 ```
 Based on the alias value "bibi", vaultpal will read the configuration for cluster "bibi" in order to render the required certs and keys (pki).  
 
+### Environment Variables
+
+| Variable                 | Usage                                                          |
+|--------------------------|----------------------------------------------------------------|
+| VAULTPAL_NP_URL          | URL of Vault production environment, used for prompt label     |
+| VAULTPAL_PR_URL          | URL of Vault non-production environment, used for prompt label |
+| VAULTPAL_KUBECONFIG_FILE | Custom location of kubeconfig file                             |
+
 ## Contributing
 
 Pull requests are welcome. For major changes, please open an issue first to discuss your idea.

kube/handler.go

@@ -14,7 +14,7 @@ import (
 	"strings"
 )
 
-const ENV_BRO_KUBECONFIG_FILE = "VBRO_KUBECONFIG_FILE"
+const ENV_VAULTPAL_KUBECONFIG_FILE = "VAULTPAL_KUBECONFIG_FILE"
 
 func contextEntryMap(c []ContextEntry) map[string]ContextEntry {
 	cm := map[string]ContextEntry{}
@@ -246,7 +246,7 @@ func verifyPalKubeConfig(cluster config.KubeCluster) error {
 func ensurePalKubeConfigFile() (string, error) {
 	kubeconfigFile := ""
 
-	if envPalKFile := os.Getenv(ENV_BRO_KUBECONFIG_FILE); envPalKFile == "" {
+	if envPalKFile := os.Getenv(ENV_VAULTPAL_KUBECONFIG_FILE); envPalKFile == "" {
 		home, err := homedir.Dir()
 		if err != nil {
 			return "", err

kube/handler_test.go

@@ -411,8 +411,8 @@ func TestWriteKubeconfigFile(t *testing.T) {
 	defer os.RemoveAll(dir)
 	os.Setenv(api.EnvVaultAddress, vm.Server.URL)
 	os.Setenv(api.EnvVaultToken, "1234")
-	os.Setenv(ENV_BRO_KUBECONFIG_FILE, dir+"/bro_test_config")
-	broFile := os.Getenv(ENV_BRO_KUBECONFIG_FILE)
+	os.Setenv(ENV_VAULTPAL_KUBECONFIG_FILE, dir+"/bro_test_config")
+	broFile := os.Getenv(ENV_VAULTPAL_KUBECONFIG_FILE)
 
 	err = os.Remove(broFile)
 	if err != nil {