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https://github.com/terraform-ibm-modules/terraform-ibm-icd-redis

Implements an instance of IBM Cloud Databases for Redis.
https://github.com/terraform-ibm-modules/terraform-ibm-icd-redis

core-team deployable-architecture graduated ibm-cloud icd icd-redis redis supported terraform terraform-module

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Implements an instance of IBM Cloud Databases for Redis.

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# IBM Cloud Databases for Redis module



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This module implements an instance of IBM Cloud Databases for Redis.



:exclamation: The module does not support major version upgrades or updates to encryption and backup encryption keys. To upgrade the version, create another instance of Databases for Redis with the updated version and follow the steps in  [Upgrading to a new Major Version doc](https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-upgrading&interface=ui) in the IBM Cloud Docs.



## Overview

* [terraform-ibm-icd-redis](#terraform-ibm-icd-redis)

* [Submodules](./modules)

    * [fscloud](./modules/fscloud)

* [Examples](./examples)

    * [Advanced example](./examples/advanced)

    * [Basic example](./examples/basic)

    * [Financial Services compliant example](./examples/fscloud)

* [Contributing](#contributing)



## terraform-ibm-icd-redis

### Usage



IBM Cloud Databases supports only Key Protect encryption for backups, not Hyper Protect Crypto Services. If you enable key management encryption and no value is passed for 'backup_encryption_key_crn', the value of 'kms_key_crn' is used. And if a HPCS value is set for `kms_key_crn`, the database backup encryption uses the default encryption keys. For more information, see [Hyper Protect Crypto Services Integration](https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hpcs) in the IBM Cloud Documents.



```terraform

provider "ibm" {

  ibmcloud_api_key = "XXXXXXXXXX"

  region           = "us-south"

}



module "redis" {

  source            = "terraform-ibm-modules/icd-redis/ibm"

  version           = "X.X.X" # Replace "X.X.X" with a release version to lock into a specific release

  resource_group_id = "xxXXxxXXxXxXXXXxxXxxxXXXXxXXXXX"

  region            = "us-south"

  instance_name     = "my-redis-instance"

}

```



### Required IAM access policies



You need the following permissions to run this module.



- Account Management

    - **Databases for Redis** service

        - `Editor` role access



### Requirements



| Name | Version |

|------|---------|

|  [terraform](#requirement\_terraform) | >= 1.3.0 |

|  [ibm](#requirement\_ibm) | >= 1.68.1, <2.0.0 |

|  [time](#requirement\_time) | >= 0.9.1, < 1.0.0 |



### Modules



| Name | Source | Version |

|------|--------|---------|

|  [cbr\_rule](#module\_cbr\_rule) | terraform-ibm-modules/cbr/ibm//modules/cbr-rule-module | 1.27.0 |



### Resources



| Name | Type |

|------|------|

| [ibm_database.redis_database](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database) | resource |

| [ibm_iam_authorization_policy.kms_policy](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/iam_authorization_policy) | resource |

| [ibm_resource_key.service_credentials](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/resource_key) | resource |

| [ibm_resource_tag.access_tag](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/resource_tag) | resource |

| [time_sleep.wait_for_authorization_policy](https://registry.terraform.io/providers/hashicorp/time/latest/docs/resources/sleep) | resource |

| [ibm_database_connection.database_connection](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/data-sources/database_connection) | data source |



### Inputs



| Name | Description | Type | Default | Required |

|------|-------------|------|---------|:--------:|

|  [access\_tags](#input\_access\_tags) | A list of access tags to apply to the Redis instance created by the module, see https://cloud.ibm.com/docs/account?topic=account-access-tags-tutorial for more details | `list(string)` | `[]` | no |

|  [admin\_pass](#input\_admin\_pass) | The password for the database administrator. If the admin password is null then the admin user ID cannot be accessed. More users can be specified in a user block. | `string` | `null` | no |

|  [auto\_scaling](#input\_auto\_scaling) | Optional rules to allow the database to increase resources in response to usage. Only a single autoscaling block is allowed. Make sure you understand the effects of autoscaling, especially for production environments. See https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-autoscaling in the IBM Cloud Docs. | 
object({
    disk = object({
      capacity_enabled             = optional(bool, false)
      free_space_less_than_percent = optional(number, 10)
      io_above_percent             = optional(number, 90)
      io_enabled                   = optional(bool, false)
      io_over_period               = optional(string, "15m")
      rate_increase_percent        = optional(number, 10)
      rate_limit_mb_per_member     = optional(number, 3670016)
      rate_period_seconds          = optional(number, 900)
      rate_units                   = optional(string, "mb")
    })
    memory = object({
      io_above_percent         = optional(number, 90)
      io_enabled               = optional(bool, false)
      io_over_period           = optional(string, "15m")
      rate_increase_percent    = optional(number, 10)
      rate_limit_mb_per_member = optional(number, 114688)
      rate_period_seconds      = optional(number, 900)
      rate_units               = optional(string, "mb")
    })
  })
 | `null` | no |

|  [backup\_crn](#input\_backup\_crn) | The CRN of a backup resource to restore from. The backup is created by a database deployment with the same service ID. The backup is loaded after provisioning and the new deployment starts up that uses that data. A backup CRN is in the format crn:v1:<…>:backup:. If omitted, the database is provisioned empty. | `string` | `null` | no |

|  [backup\_encryption\_key\_crn](#input\_backup\_encryption\_key\_crn) | The CRN of a KMS (Key Protect or Hyper Protect Crypto Services) key to use for encrypting the disk that holds deployment backups. Only used if var.kms\_encryption\_enabled is set to true. There are limitation per region on the type of KMS service (Key Protect or Hyper Protect Crypto Services) and region for those services. See https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-key-protect&interface=ui#key-byok and https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hpcs#use-hpcs-backups | `string` | `null` | no |

|  [cbr\_rules](#input\_cbr\_rules) | (Optional, list) List of CBR rules to create | 
list(object({
    description = string
    account_id  = string
    rule_contexts = list(object({
      attributes = optional(list(object({
        name  = string
        value = string
    }))) }))
    enforcement_mode = string
    tags = optional(list(object({
      name  = string
      value = string
    })))
  }))
 | `[]` | no |

|  [configuration](#input\_configuration) | Database Configuration. Default values will get picked up if not all the values are passed. | 
object({
    maxmemory                   = optional(number)
    maxmemory-policy            = optional(string)
    appendonly                  = optional(string)
    maxmemory-samples           = optional(number)
    stop-writes-on-bgsave-error = optional(string)
  })
 | `null` | no |

|  [cpu\_count](#input\_cpu\_count) | Allocated dedicated CPU per member. For shared CPU, set to 0. [Learn more](https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-resources-scaling) | `number` | `0` | no |

|  [disk\_mb](#input\_disk\_mb) | Allocated disk per member. [Learn more](https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-resources-scaling) | `number` | `1024` | no |

|  [endpoints](#input\_endpoints) | Specify whether you want to enable the public, private, or both service endpoints. Supported values are 'public', 'private', or 'public-and-private'. | `string` | `"private"` | no |

|  [existing\_kms\_instance\_guid](#input\_existing\_kms\_instance\_guid) | The GUID of the Hyper Protect Crypto Services or Key Protect instance in which the key specified in var.kms\_key\_crn and var.backup\_encryption\_key\_crn is coming from. Required only if var.kms\_encryption\_enabled is set to true, var.skip\_iam\_authorization\_policy is set to false, and you pass a value for var.kms\_key\_crn, var.backup\_encryption\_key\_crn, or both. | `string` | `null` | no |

|  [instance\_name](#input\_instance\_name) | The name to give the Redis instance. | `string` | n/a | yes |

|  [kms\_encryption\_enabled](#input\_kms\_encryption\_enabled) | Set this to true to control the encryption keys used to encrypt the data that you store in IBM Cloud® Databases. If set to false, the data is encrypted by using randomly generated keys. For more info on Key Protect integration, see https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-key-protect. For more info on HPCS integration, see https://cloud.ibm.com/docs/cloud-databases?topic=cloud-databases-hpcs | `bool` | `false` | no |

|  [kms\_key\_crn](#input\_kms\_key\_crn) | The root key CRN of a Key Management Services like Key Protect or Hyper Protect Crypto Services (HPCS) that you want to use for disk encryption. Only used if var.kms\_encryption\_enabled is set to true. | `string` | `null` | no |

|  [member\_host\_flavor](#input\_member\_host\_flavor) | Allocated host flavor per member. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor). | `string` | `null` | no |

|  [members](#input\_members) | Allocated number of members. Members can be scaled up but not down. | `number` | `2` | no |

|  [memory\_mb](#input\_memory\_mb) | Allocated memory per member. [Learn more](https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-resources-scaling) | `number` | `4096` | no |

|  [redis\_version](#input\_redis\_version) | Version of the Redis instance to provision. If no value is passed, the current preferred version of IBM Cloud Databases is used. | `string` | `null` | no |

|  [region](#input\_region) | The region where you want to deploy your instance. | `string` | `"us-south"` | no |

|  [resource\_group\_id](#input\_resource\_group\_id) | The resource group ID where the Redis instance will be created. | `string` | n/a | yes |

|  [service\_credential\_names](#input\_service\_credential\_names) | Map of name, role for service credentials that you want to create for the database | `map(string)` | `{}` | no |

|  [skip\_iam\_authorization\_policy](#input\_skip\_iam\_authorization\_policy) | Set to true to skip the creation of an IAM authorization policy that permits all Redis database instances in the resource group to read the encryption key from the KMS instance. If set to false, pass in a value for the KMS instance in the existing\_kms\_instance\_guid variable. In addition, no policy is created if var.kms\_encryption\_enabled is set to false. | `bool` | `false` | no |

|  [tags](#input\_tags) | Optional list of tags to be added to the Redis instance. | `list(any)` | `[]` | no |

|  [use\_default\_backup\_encryption\_key](#input\_use\_default\_backup\_encryption\_key) | Set to true to use default ICD randomly generated keys. | `bool` | `false` | no |

|  [users](#input\_users) | A list of users that you want to create on the database. Users block is supported by Redis version >= 6.0. Multiple blocks are allowed. The user password must be in the range of 10-32 characters. Be warned that in most case using IAM service credentials (via the var.service\_credential\_names) is sufficient to control access to the Redis instance. This blocks creates native redis database users, more info on that can be found here https://cloud.ibm.com/docs/databases-for-redis?topic=databases-for-redis-user-management&interface=ui | 
list(object({
    name     = string
    password = string # pragma: allowlist secret
    type     = optional(string)
    role     = optional(string)
  }))
 | `[]` | no |



### Outputs



| Name | Description |

|------|-------------|

|  [adminuser](#output\_adminuser) | Database admin user name |

|  [cbr\_rule\_ids](#output\_cbr\_rule\_ids) | CBR rule ids created to restrict Redis |

|  [certificate\_base64](#output\_certificate\_base64) | Database connection certificate |

|  [crn](#output\_crn) | Redis instance crn |

|  [guid](#output\_guid) | Redis instance guid |

|  [hostname](#output\_hostname) | Database connection hostname |

|  [id](#output\_id) | Redis instance id |

|  [port](#output\_port) | Database connection port |

|  [service\_credentials\_json](#output\_service\_credentials\_json) | Service credentials json map |

|  [service\_credentials\_object](#output\_service\_credentials\_object) | Service credentials object |

|  [version](#output\_version) | Redis instance version |



## Contributing



You can report issues and request features for this module in GitHub issues in the module repo. See [Report an issue or request a feature](https://github.com/terraform-ibm-modules/.github/blob/main/.github/SUPPORT.md).



To set up your local development environment, see [Local development setup](https://terraform-ibm-modules.github.io/documentation/#/local-dev-setup) in the project documentation.