change doc URL if UI is running in k8s (#2484)

Co-authored-by: Prakash Senthil Vel <23444145+prakashsvmx@users.noreply.github.com>

Author: harshavardhana

models/login_details.go

@@ -25,6 +25,7 @@ import (
 	xoauth2 "golang.org/x/oauth2"
 
 	"github.com/minio/minio-go/v7/pkg/credentials"
+	"github.com/minio/pkg/env"
 
 	"github.com/minio/console/restapi"
 
@@ -93,6 +94,15 @@ func login(credentials restapi.ConsoleCredentialsI) (*string, error) {
 	return &token, nil
 }
 
+// isKubernetes returns true if minio is running in kubernetes.
+func isKubernetes() bool {
+	// Kubernetes env used to validate if we are
+	// indeed running inside a kubernetes pod
+	// is KUBERNETES_SERVICE_HOST
+	// https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/kubelet_pods.go#L541
+	return env.Get("KUBERNETES_SERVICE_HOST", "") != ""
+}
+
 // getLoginDetailsResponse returns information regarding the Console authentication mechanism.
 func getLoginDetailsResponse(params authApi.LoginDetailParams) (*models.LoginDetails, *models.Error) {
 	ctx, cancel := context.WithCancel(params.HTTPRequest.Context())
@@ -129,6 +139,7 @@ func getLoginDetailsResponse(params authApi.LoginDetailParams) (*models.LoginDet
 		LoginStrategy: loginStrategy,
 		RedirectRules: redirectRules,
 		IsDirectPV:    getDirectPVEnabled(),
+		IsK8S:         isKubernetes(),
 	}
 	return loginDetails, nil
 }

operatorapi/embedded_spec.go

@@ -291,7 +291,8 @@ const Login = () => {
   );
   const navigateTo = useSelector((state: AppState) => state.login.navigateTo);
 
-  const directPVMode = useSelector((state: AppState) => state.login.isDirectPV);
+  const isDirectPV = useSelector((state: AppState) => state.login.isDirectPV);
+  const isK8S = useSelector((state: AppState) => state.login.isK8S);
 
   const isOperator =
     loginStrategy.loginStrategy === loginStrategyType.serviceAccount ||
@@ -479,12 +480,18 @@ const Login = () => {
   let modeLogo: "console" | "directpv" | "operator" | "kes" | "subnet" =
     "console";
 
-  if (directPVMode) {
+  if (isDirectPV) {
     modeLogo = "directpv";
   } else if (isOperator) {
     modeLogo = "operator";
   }
 
+  let docsURL = "https://min.io/docs/minio/linux/index.html?ref=con";
+  if (isK8S) {
+    docsURL =
+      "https://min.io/docs/minio/kubernetes/upstream/index.html?ref=con";
+  }
+
   return (
     <Fragment>
       <MainError />
@@ -493,11 +500,7 @@ const Login = () => {
         form={loginComponent}
         formFooter={
           <Fragment>
-            <a
-              href="https://min.io/docs/minio/linux/index.html?ref=con"
-              target="_blank"
-              rel="noreferrer"
-            >
+            <a href={docsURL} target="_blank" rel="noreferrer">
               Documentation
             </a>
             <span className={classes.separator}>|</span>

operatorapi/login.go

@@ -38,6 +38,7 @@ export interface LoginState {
   latestMinIOVersion: string;
   loadingVersion: boolean;
   isDirectPV: boolean;
+  isK8S: boolean;
 
   navigateTo: string;
 }
@@ -57,6 +58,7 @@ const initialState: LoginState = {
   latestMinIOVersion: "",
   loadingVersion: true,
   isDirectPV: false,
+  isK8S: false,
 
   navigateTo: "",
 };
@@ -110,6 +112,7 @@ export const loginSlice = createSlice({
         if (action.payload) {
           state.loginStrategy = action.payload;
           state.isDirectPV = !!action.payload.isDirectPV;
+          state.isK8S = !!action.payload.isK8S;
         }
       })
       .addCase(doLoginAsync.pending, (state, action) => {

portal-ui/src/screens/LoginPage/LoginPage.tsx

@@ -18,6 +18,7 @@ export interface ILoginDetails {
   loginStrategy: loginStrategyType;
   redirectRules: redirectRule[];
   isDirectPV?: boolean;
+  isK8S?: boolean;
 }
 
 export interface redirectRule {

portal-ui/src/screens/LoginPage/loginSlice.ts

@@ -31,6 +31,7 @@ import (
 	authApi "github.com/minio/console/restapi/operations/auth"
 	"github.com/minio/madmin-go/v2"
 	"github.com/minio/minio-go/v7/pkg/credentials"
+	"github.com/minio/pkg/env"
 )
 
 func registerLoginHandlers(api *operations.ConsoleAPI) {
@@ -153,6 +154,15 @@ func getLoginResponse(params authApi.LoginParams) (*models.LoginResponse, *model
 	return loginResponse, nil
 }
 
+// isKubernetes returns true if minio is running in kubernetes.
+func isKubernetes() bool {
+	// Kubernetes env used to validate if we are
+	// indeed running inside a kubernetes pod
+	// is KUBERNETES_SERVICE_HOST
+	// https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/kubelet_pods.go#L541
+	return env.Get("KUBERNETES_SERVICE_HOST", "") != ""
+}
+
 // getLoginDetailsResponse returns information regarding the Console authentication mechanism.
 func getLoginDetailsResponse(params authApi.LoginDetailParams, openIDProviders oauth2.OpenIDPCfg) (*models.LoginDetails, *models.Error) {
 	ctx, cancel := context.WithCancel(params.HTTPRequest.Context())
@@ -193,6 +203,7 @@ func getLoginDetailsResponse(params authApi.LoginDetailParams, openIDProviders o
 	loginDetails = &models.LoginDetails{
 		LoginStrategy: loginStrategy,
 		RedirectRules: redirectRules,
+		IsK8S:         isKubernetes(),
 	}
 	return loginDetails, nil
 }

portal-ui/src/screens/LoginPage/types.ts

@@ -4057,6 +4057,8 @@ definitions:
           $ref: "#/definitions/redirectRule"
       isDirectPV:
         type: boolean
+      isK8S:
+        type: boolean
   loginOauth2AuthRequest:
     type: object
     required:

restapi/embedded_spec.go

@@ -1645,6 +1645,8 @@ definitions:
           $ref: "#/definitions/redirectRule"
       isDirectPV:
         type: boolean
+      isK8S:
+        type: boolean
   loginRequest:
     type: object
     properties: