docs: document password requirements for database resources

Author: jremy42

docs/resources/mongodb_instance.md

@@ -95,7 +95,7 @@ The following arguments are supported:
 - `version` - (Optional) MongoDB® version of the instance.
 - `node_type` - (Required) The type of MongoDB® intance to create.
 - `user_name` - (Optional) Name of the user created when the intance is created.
-- `password` - (Optional) Password of the user.
+- `password` - (Optional) Password of the user. The password must contain at least 1 digit, 1 uppercase letter, 1 lowercase letter, and 1 special character. For secure password generation, consider using the `random_password` resource with appropriate parameters.
 - `name` - (Optional) Name of the MongoDB® instance.
 - `tags` - (Optional) List of tags attached to the MongoDB® instance.
 - `volume_type` - (Optional) Volume type of the instance.

docs/resources/rdb_instance.md

@@ -25,6 +25,33 @@ resource "scaleway_rdb_instance" "main" {
 }
 ```
 
+### Example with Secure Random Password
+
+```terraform
+resource "random_password" "rdb_password" {
+  length           = 24
+  special          = true
+  upper            = true
+  lower            = true
+  numeric          = true
+  min_upper        = 1
+  min_lower        = 1
+  min_numeric      = 1
+  min_special      = 1
+}
+
+resource "scaleway_rdb_instance" "main" {
+  name               = "test-rdb"
+  node_type          = "DB-DEV-S"
+  engine             = "PostgreSQL-15"
+  is_ha_cluster      = true
+  disable_backup     = true
+  user_name          = "my_initial_user"
+  password           = random_password.rdb_password.result
+  encryption_at_rest = true
+}
+```
+
 ### Example Block Storage Low Latency
 
 ```terraform
@@ -153,7 +180,7 @@ interruption.
 
 ~> **Important** Updates to `user_name` will recreate the Database Instance.
 
-- `password` - (Optional) Password for the first user of the Database Instance.
+- `password` - (Optional) Password for the first user of the Database Instance. The password must contain at least 1 digit, 1 uppercase letter, 1 lowercase letter, and 1 special character. For secure password generation, consider using the `random_password` resource with appropriate parameters.
 
 - `is_ha_cluster` - (Optional) Enable or disable high availability for the Database Instance.
 

docs/resources/rdb_user.md

@@ -24,8 +24,15 @@ resource "scaleway_rdb_instance" "main" {
 }
 
 resource "random_password" "db_password" {
-  length  = 16
-  special = true
+  length           = 20
+  special          = true
+  upper            = true
+  lower            = true
+  numeric          = true
+  min_upper        = 1
+  min_lower        = 1
+  min_numeric      = 1
+  min_special      = 1
 }
 
 resource "scaleway_rdb_user" "db_admin" {
@@ -48,7 +55,7 @@ The following arguments are supported:
 
 ~> **Important:** Updates to `name` will recreate the database user.
 
-- `password` - (Required) database user password.
+- `password` - (Required) database user password. The password must contain at least 1 digit, 1 uppercase letter, 1 lowercase letter, and 1 special character. For secure password generation, consider using the `random_password` resource with appropriate parameters.
 
 - `is_admin` - (Optional) Grant admin permissions to the database user.
 

docs/resources/redis_cluster.md

@@ -89,7 +89,7 @@ you cannot downgrade a Redis™ cluster.
 
 - `user_name` - (Required) Identifier for the first user of the Redis™ cluster.
 
-- `password` - (Required) Password for the first user of the Redis™ cluster.
+- `password` - (Required) Password for the first user of the Redis™ cluster. The password must contain at least 1 digit, 1 uppercase letter, 1 lowercase letter, and 1 special character. For secure password generation, consider using the `random_password` resource with appropriate parameters.
 
 - `name` - (Optional) The name of the Redis™ cluster.