Repository: hashicorp/terraform-provider-vault

Issue:
[Bug]: vault_jwt_auth_backend tune block always updates unless config matches Vault server defaults
### Terraform Core Version

1.7.5

### Terraform Vault Provider Version

4.2.0

### Vault Server Version

1.15.7+ent

### Affected Resource(s)

- vault_jwt_auth_backend

### Expected Behavior

There should be no changes reported by Terraform if the configured `tune` block parameters have not changed.

### Actual Behavior

Terraform always reports that the `vault_jwt_auth_backend` resource will be updated in-place unless all of the tune parameters (`default_lease_ttl`, `max_lease_ttl`, and `token_type` are currently the only ones with default values) match the defaults (I'm assuming as reported by the target Vault server, rather than defaults set within the provider code). This includes when the `tune` block exists but has no attributes configured (as none of the attributes are required).

### Relevant Error/Panic Output Snippet

```shell
$ terraform apply -auto-approve

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # vault_jwt_auth_backend.jwt_backend will be created
  + resource "vault_jwt_auth_backend" "jwt_backend" {
      + accessor           = (known after apply)
      + bound_issuer       = "https://token.actions.githubusercontent.com"
      + disable_remount    = false
      + id                 = (known after apply)
      + local              = false
      + namespace_in_state = true
      + oidc_discovery_url = "https://token.actions.githubusercontent.com"
      + path               = "jwt-test"
      + tune               = [
          + {
              + allowed_response_headers     = []
              + audit_non_hmac_request_keys  = []
              + audit_non_hmac_response_keys = []
              + default_lease_ttl            = ""
              + listing_visibility           = ""
              + max_lease_ttl                = ""
              + passthrough_request_headers  = []
              + token_type                   = "default-service"
            },
        ]
      + type               = "jwt"
    }

Plan: 1 to add, 0 to change, 0 to destroy.
vault_jwt_auth_backend.jwt_backend: Creating...
vault_jwt_auth_backend.jwt_backend: Creation complete after 1s [id=jwt-test]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

$ terraform apply -auto-approve
vault_jwt_auth_backend.jwt_backend: Refreshing state... [id=jwt-test]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # vault_jwt_auth_backend.jwt_backend will be updated in-place
  ~ resource "vault_jwt_auth_backend" "jwt_backend" {
        id                     = "jwt-test"
      ~ tune                   = [
          - {
              - allowed_response_headers     = []
              - audit_non_hmac_request_keys  = []
              - audit_non_hmac_response_keys = []
              - default_lease_ttl            = "768h"
              - listing_visibility           = ""
              - max_lease_ttl                = "768h"
              - passthrough_request_headers  = []
              - token_type                   = "default-service"
            },
          + {
              + allowed_response_headers     = []
              + audit_non_hmac_request_keys  = []
              + audit_non_hmac_response_keys = []
              + default_lease_ttl            = ""
              + listing_visibility           = ""
              + max_lease_ttl                = ""
              + passthrough_request_headers  = []
              + token_type                   = "default-service"
            },
        ]
        # (12 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.
vault_jwt_auth_backend.jwt_backend: Modifying... [id=jwt-test]
vault_jwt_auth_backend.jwt_backend: Modifications complete after 0s [id=jwt-test]
```


### Terraform Configuration Files

Sample configuration that always produces an update in-place operation:
```hcl
terraform {
  required_providers {
    vault = {
      source  = "hashicorp/vault"
      version = "= 4.2.0"
    }
  }
  required_version = ">= 1.7.0"
}

resource "vault_jwt_auth_backend" "jwt_backend" {
  path = "jwt-test"
  type = "jwt"

  bound_issuer       = "https://token.actions.githubusercontent.com"
  oidc_discovery_url = "https://token.actions.githubusercontent.com"

  tune {
    token_type = "default-service"  
  }
}
```

Sample configuration that reports "No changes" (I assume the values for `default_lease_ttl`, and `max_lease_ttl` would need to be different if there were different global default values configured for the Vault server):

```hcl
terraform {
  required_providers {
    vault = {
      source  = "hashicorp/vault"
      version = "= 4.2.0"
    }
  }
  required_version = ">= 1.7.0"
}

resource "vault_jwt_auth_backend" "jwt_backend" {
  path = "jwt-test"
  type = "jwt"

  bound_issuer       = "https://token.actions.githubusercontent.com"
  oidc_discovery_url = "https://token.actions.githubusercontent.com"

  tune {
    default_lease_ttl = "768h"
    max_lease_ttl     = "768h"
    token_type        = "default-service"
  }
}
```

### Steps to Reproduce

1. Apply the first Terraform code above to provision the JWT auth backend with `terraform apply`
2. Re-apply the same Terraform code with `terraform apply`
3. Note Terraform reports 1 resource to change when there should be no changes to the infrastructure necessary because the Terraform code has not changed

### Debug Output

_No response_

### Panic Output

_No response_

### Important Factoids

_No response_

### References

Possibly related to https://github.com/hashicorp/terraform-provider-vault/issues/1172 ? Unclear if the behaviour reported in that issue with the `provider_config` block for OIDC is using the same provider machinery for this issue with the `tune` block.

### Would you like to implement a fix?

None

Hints from issue comments:

Solution patch:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4ced061..575d5649 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ FEATURES:
 * Add support for managed key parameters in the SSH CA config endpoint ([#2480](https://github.com/hashicorp/terraform-provider-vault/pull/2480))
 * Add new resources `vault_oci_auth_backend` and `vault_oci_auth_backend_role` to manage OCI auth backend and roles. ([#1761](https://github.com/hashicorp/terraform-provider-vault/pull/1761))
 
+BUGS:
+* Fix the tune block issue where it always updates unless field values match Vault server defaults
+  * `vault_jwt_auth_backend` resource ([#2546](https://github.com/hashicorp/terraform-provider-vault/pull/2546))
+
 ## 5.1.0 (Jul 9, 2025)
 
 FEATURES:
diff --git a/go.mod b/go.mod
index 77b8a68b..3def08ab 100644
--- a/go.mod
+++ b/go.mod
@@ -5,14 +5,14 @@ go 1.24.3
 require (
 	cloud.google.com/go/compute/metadata v0.6.0
 	cloud.google.com/go/iam v1.2.2
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.11.1
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.6.0
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.2
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1
 	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/resources/armresources v1.2.0
-	github.com/aws/aws-sdk-go v1.55.6
+	github.com/aws/aws-sdk-go v1.55.8
 	github.com/cenkalti/backoff/v4 v4.3.0
 	github.com/coreos/pkg v0.0.0-20230601102743-20bbbf26f4d8
 	github.com/denisenkom/go-mssqldb v0.12.3
-	github.com/go-sql-driver/mysql v1.8.1
+	github.com/go-sql-driver/mysql v1.9.3
 	github.com/go-test/deep v1.1.1
 	github.com/google/uuid v1.6.0
 	github.com/gosimple/slug v1.13.1
@@ -43,8 +43,8 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/stretchr/testify v1.10.0
-	golang.org/x/crypto v0.36.0
-	golang.org/x/net v0.37.0
+	golang.org/x/crypto v0.41.0
+	golang.org/x/net v0.43.0
 	golang.org/x/oauth2 v0.24.0
 	google.golang.org/api v0.214.0
 	google.golang.org/genproto v0.0.0-20241118233622-e639e219e697
@@ -55,9 +55,9 @@ require (
 	cloud.google.com/go/auth v0.13.0 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.6 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/internal v1.8.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/ProtonMail/go-crypto v1.1.3 // indirect
 	github.com/agext/levenshtein v1.2.2 // indirect
@@ -83,7 +83,7 @@ require (
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
+	github.com/golang-jwt/jwt/v5 v5.2.2 // indirect
 	github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9 // indirect
 	github.com/golang-sql/sqlexp v0.1.0 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
@@ -178,12 +178,12 @@ require (
 	go.opentelemetry.io/otel/trace v1.31.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
 	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
-	golang.org/x/mod v0.22.0 // indirect
-	golang.org/x/sync v0.12.0 // indirect
-	golang.org/x/sys v0.31.0 // indirect
-	golang.org/x/text v0.23.0 // indirect
+	golang.org/x/mod v0.26.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
 	golang.org/x/time v0.9.0 // indirect
-	golang.org/x/tools v0.29.0 // indirect
+	golang.org/x/tools v0.35.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20241113202542-65e8d215514f // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20241209162323-e6fa225c2576 // indirect
diff --git a/go.sum b/go.sum
index b0232a44..3027b42b 100644
--- a/go.sum
+++ b/go.sum
@@ -1162,16 +1162,18 @@ github.com/Azure/azure-sdk-for-go v56.3.0+incompatible h1:DmhwMrUIvpeoTDiWRDtNHq
 github.com/Azure/azure-sdk-for-go v56.3.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v0.19.0/go.mod h1:h6H6c8enJmmocHUbLiiGY6sx7f9i+X3m1CHdd5c6Rdw=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v1.6.0/go.mod h1:bjGvMhVMb+EEm3VRNQawDMUyMMjo+S5ewNjflkep/0Q=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.11.1 h1:E+OJmp2tPvt1W+amx48v1eqbjDYsgN+RzP4q16yV5eM=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.11.1/go.mod h1:a6xsAQUZg+VsS3TJ05SRp524Hs4pZ/AeFSr5ENf0Yjo=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.2 h1:Hr5FTipp7SL07o2FvoVOX9HRiRH3CR3Mj8pxqCcdD5A=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.2/go.mod h1:QyVsSSN64v5TGltphKLQ2sQxe4OBQg0J1eKRcVBnfgE=
 github.com/Azure/azure-sdk-for-go/sdk/azidentity v0.11.0/go.mod h1:HcM1YX14R7CJcghJGOYCgdezslRSVzqwLf/q+4Y2r/0=
 github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.3.0/go.mod h1:OQeznEEkTZ9OrhHJoDD8ZDq51FHgXjqtP9z6bEwBq9U=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.6.0 h1:U2rTu3Ef+7w9FHKIAXM6ZyqF3UOWJZ12zIm8zECAFfg=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.6.0/go.mod h1:9kIvujWAA58nmPmWB1m23fyWic1kYZMxD9CxaWn4Qpg=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1 h1:B+blDbyVIG3WaikNxPnhPiJ1MThR03b3vKGtER95TP4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1/go.mod h1:JdM5psgjfBf5fo2uWOZhflPWyDBZ/O/CNAH9CtsuZE4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2 h1:yz1bePFlP5Vws5+8ez6T3HWXPmwOK7Yvq8QxDBD3SKY=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2/go.mod h1:Pa9ZNPuoNu/GztvBSKk9J1cDJW6vk/n0zLtV4mgd8N8=
 github.com/Azure/azure-sdk-for-go/sdk/internal v0.7.0/go.mod h1:yqy467j36fJxcRV2TzfVZ1pCb5vxm4BtZPUdYWe/Xo8=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0/go.mod h1:okt5dMMTOFjX/aovMlrjvvXoPMBVSPzk9185BT0+eZM=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.8.0 h1:jBQA3cKT4L2rWMpgE7Yt3Hwh2aUj8KXjIGLxjHeYNNo=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.8.0/go.mod h1:4OG6tQ9EOP/MT0NMjDlRzWoVFxfu9rN9B2X+tlSVktg=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI=
 github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/internal/v2 v2.0.0 h1:PTFGRSlMKCQelWwxUyYVEUqseBJVemLyqWJjvMyt0do=
 github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/internal/v2 v2.0.0/go.mod h1:LRr2FzBTQlONPPa5HREE5+RjSCTXl7BwOvYOaWTqCaI=
 github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/managementgroups/armmanagementgroups v1.0.0 h1:pPvTJ1dY0sA35JOeFq6TsY2xj6Z85Yo23Pj4wCCvu4o=
@@ -1203,9 +1205,11 @@ github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c/go.mod h1:chxPXzS
 github.com/Azure/go-ntlmssp v0.0.0-20220621081337-cb9428e4ac1e/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU=
 github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 h1:mFRzDkZVAjdal+s7s0MwaRv9igoPqLRdzOLzw/8Xvq8=
 github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
 github.com/AzureAD/microsoft-authentication-library-for-go v1.0.0/go.mod h1:kgDmCTgBzIEPFElEF+FK0SdjAor06dRq2Go927dnQ6o=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 h1:XHOnouVk1mxXfQidrMEnLlPk9UMeRtyBTnEFtxkV0kU=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
@@ -1302,8 +1306,8 @@ github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZo
 github.com/aws/aws-sdk-go v1.34.0/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/aws/aws-sdk-go v1.43.9/go.mod h1:y4AeaBuwd2Lk+GepC1E9v0qOiTws0MIWAX4oIKwKHZo=
 github.com/aws/aws-sdk-go v1.43.16/go.mod h1:y4AeaBuwd2Lk+GepC1E9v0qOiTws0MIWAX4oIKwKHZo=
-github.com/aws/aws-sdk-go v1.55.6 h1:cSg4pvZ3m8dgYcgqB97MrcdjUmZ1BeMYKUxMMB89IPk=
-github.com/aws/aws-sdk-go v1.55.6/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
+github.com/aws/aws-sdk-go v1.55.8 h1:JRmEUbU52aJQZ2AjX4q4Wu7t4uZjOu71uyNmaWlUkJQ=
+github.com/aws/aws-sdk-go v1.55.8/go.mod h1:ZkViS9AqA6otK+JBBNH2++sx1sgxrPKcSzPPvQkUtXk=
 github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
@@ -1347,10 +1351,13 @@ github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA
 github.com/census-instrumentation/opencensus-proto v0.4.1/go.mod h1:4T9NM4+4Vw91VeyqjLS6ao50K5bOcLKN6Q42XnYaRYw=
 github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
 github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/checkpoint-restore/go-criu/v4 v4.1.0/go.mod h1:xUQBLp4RLc5zJtWY++yjOoMoB5lihDt7fai+75m+rGw=
 github.com/checkpoint-restore/go-criu/v5 v5.0.0/go.mod h1:cfwC0EG7HMUenopBsUf9d89JlCLQIfgVcNsNN0t6T2M=
 github.com/checkpoint-restore/go-criu/v5 v5.3.0/go.mod h1:E/eQpaFtUKGOOSEBZgmKAcn+zUUwWxqcaKZlF54wK8E=
@@ -1573,6 +1580,8 @@ github.com/dgrijalva/jwt-go v0.0.0-20170104182250-a601269ab70c/go.mod h1:E3ru+11
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
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@@ -1760,8 +1769,8 @@ github.com/go-pdf/fpdf v0.6.0/go.mod h1:HzcnA+A23uwogo0tp9yU+l3V+KXhiESpt1PMayhO
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@@ -1794,8 +1803,8 @@ github.com/golang-jwt/jwt/v4 v4.0.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzw
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@@ -2284,6 +2293,8 @@ github.com/jung-kurt/gofpdf v1.0.3-0.20190309125859-24315acbbda5/go.mod h1:7Id9E
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@@ -2655,6 +2666,8 @@ github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1
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@@ -3029,8 +3042,8 @@ golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq
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@@ -3094,8 +3107,8 @@ golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
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@@ -3190,8 +3203,8 @@ golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
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@@ -3249,8 +3262,8 @@ golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -3411,8 +3424,8 @@ golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
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@@ -3435,8 +3448,8 @@ golang.org/x/term v0.14.0/go.mod h1:TySc+nGkYR6qt8km8wUhuFRTVSMIX3XPR58y2lC8vww=
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@@ -3458,8 +3471,8 @@ golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
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@@ -3563,8 +3576,8 @@ golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
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+golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw=
 golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/vault/resource_jwt_auth_backend.go b/vault/resource_jwt_auth_backend.go
index 0cf4af29..f80be2b6 100644
--- a/vault/resource_jwt_auth_backend.go
+++ b/vault/resource_jwt_auth_backend.go
@@ -339,7 +339,11 @@ func jwtAuthBackendRead(ctx context.Context, d *schema.ResourceData, meta interf
 	if err != nil {
 		return diag.Errorf("error reading tune information from Vault: %s", err)
 	}
-	if err := d.Set("tune", []map[string]interface{}{rawTune}); err != nil {
+
+	input := expandAuthMethodTune(d.Get("tune").(*schema.Set).List())
+	mergedTune := mergeAuthMethodTune(rawTune, &input)
+
+	if err := d.Set("tune", []map[string]interface{}{mergedTune}); err != nil {
 		log.Printf("[ERROR] Error when setting tune config from path %q to state: %s", path+"/tune", err)
 		return diag.FromErr(err)
 	}
diff --git a/vault/structures.go b/vault/structures.go
index c420545f..19284e2d 100644
--- a/vault/structures.go
+++ b/vault/structures.go
@@ -70,6 +70,31 @@ func flattenAuthMethodTune(dt *api.MountConfigOutput) map[string]interface{} {
 	return m
 }
 
+// mergeAuthMethodTune merges the raw tune GET API response with the user input parsed
+// from the tune schema. Any field with the Vault APIs's global default effect will be set to empty
+// when the user did not provide a value even if the Vault API response returns non-empty.
+// This is to ensure the tune block reflects the user provided values.
+// See more details in the https://github.com/hashicorp/terraform-provider-vault/issues/2234
+func mergeAuthMethodTune(rawTune map[string]interface{}, input *api.MountConfigInput) map[string]interface{} {
+	// Merge the fields that have the global default effect
+	// github.com/hashicorp/terraform-provider-vault/vault/auth_mount.go
+	if input != nil {
+		if input.DefaultLeaseTTL == "" {
+			rawTune["default_lease_ttl"] = ""
+		}
+
+		if input.MaxLeaseTTL == "" {
+			rawTune["max_lease_ttl"] = ""
+		}
+
+		if input.ListingVisibility == "" {
+			rawTune["listing_visibility"] = ""
+		}
+	}
+
+	return rawTune
+}
+
 func expandStringSlice(configured []interface{}) []string {
 	vs := make([]string, 0, len(configured))
 	for _, v := range configured {



Test patch:
diff --git a/vault/resource_jwt_auth_backend_test.go b/vault/resource_jwt_auth_backend_test.go
index 21ac08f1..16e848e0 100644
--- a/vault/resource_jwt_auth_backend_test.go
+++ b/vault/resource_jwt_auth_backend_test.go
@@ -68,6 +68,12 @@ func TestAccJWTAuthBackend(t *testing.T) {
 						resource.TestCheckResourceAttr(resourceName, "bound_issuer", "api://default"),
 						resource.TestCheckResourceAttr(resourceName, "jwt_supported_algs.#", "1"),
 						resource.TestCheckResourceAttr(resourceName, "type", "jwt"),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.token_type", "default-service"),
+						// ensure the global default effect from Vault tune API is ignored,
+						// these fields should stay empty
+						resource.TestCheckResourceAttr(resourceName, "tune.0.listing_visibility", ""),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.default_lease_ttl", ""),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.max_lease_ttl", ""),
 					)...,
 				),
 			},
@@ -79,6 +85,12 @@ func TestAccJWTAuthBackend(t *testing.T) {
 						resource.TestCheckResourceAttr(resourceName, "bound_issuer", "api://default"),
 						resource.TestCheckResourceAttr(resourceName, "jwt_supported_algs.#", "2"),
 						resource.TestCheckResourceAttr(resourceName, "type", "jwt"),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.token_type", "default-service"),
+						// ensure the global default effect from Vault tune API is ignored,
+						// these fields should stay empty
+						resource.TestCheckResourceAttr(resourceName, "tune.0.listing_visibility", ""),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.default_lease_ttl", ""),
+						resource.TestCheckResourceAttr(resourceName, "tune.0.max_lease_ttl", ""),
 					)...,
 				),
 			},
@@ -367,6 +379,9 @@ resource "vault_jwt_auth_backend" "jwt" {
   bound_issuer       = "%s"
   jwt_supported_algs = [%s]
   path               = "%s"
+  tune {
+    token_type         = "default-service"
+  }
 `, oidcDiscoveryUrl, boundIssuer, supportedAlgs, path)
 
 	var fragments []string
diff --git a/vault/structures_test.go b/vault/structures_test.go
index bf1eec5c..559ed9c1 100644
--- a/vault/structures_test.go
+++ b/vault/structures_test.go
@@ -72,3 +72,47 @@ func TestFlattenAuthMethodTune(t *testing.T) {
 			expected)
 	}
 }
+
+func TestMergeAuthMethodTune(t *testing.T) {
+	rawTune := map[string]interface{}{
+		"default_lease_ttl":            "768h", // global default
+		"max_lease_ttl":                "768h", // global default
+		"audit_non_hmac_request_keys":  []interface{}{"foo", "bar"},
+		"audit_non_hmac_response_keys": []interface{}{},
+		"listing_visibility":           "",
+		"passthrough_request_headers":  []interface{}{"X-Custom", "X-Mas"},
+		"allowed_response_headers":     []interface{}{"X-Response-Custom", "X-Response-Mas"},
+		"token_type":                   "default-service",
+	}
+
+	input := &api.MountConfigInput{
+		DefaultLeaseTTL:           "",
+		MaxLeaseTTL:               "",
+		AuditNonHMACRequestKeys:   []string{"foo", "bar"},
+		AuditNonHMACResponseKeys:  []string{},
+		ListingVisibility:         "",
+		PassthroughRequestHeaders: []string{"X-Custom", "X-Mas"},
+		AllowedResponseHeaders:    []string{"X-Response-Custom", "X-Response-Mas"},
+		TokenType:                 "default-service",
+	}
+
+	expected := map[string]interface{}{
+		"default_lease_ttl":            "",
+		"max_lease_ttl":                "",
+		"audit_non_hmac_request_keys":  []interface{}{"foo", "bar"},
+		"audit_non_hmac_response_keys": []interface{}{},
+		"listing_visibility":           "",
+		"passthrough_request_headers":  []interface{}{"X-Custom", "X-Mas"},
+		"allowed_response_headers":     []interface{}{"X-Response-Custom", "X-Response-Mas"},
+		"token_type":                   "default-service",
+	}
+
+	actual := mergeAuthMethodTune(rawTune, input)
+
+	if !reflect.DeepEqual(actual, expected) {
+		t.Fatalf(
+			"Got:\n\n%#v\n\nExpected:\n\n%#v\n",
+			actual,
+			expected)
+	}
+}