IBM Cloud Databases for Postgresql module

This module implements an instance of the IBM Cloud Databases for PostgreSQL service.

❗ 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 PostgreSQL with the updated version and follow the steps in Upgrading PostgreSQL docs in the IBM Cloud Docs.

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 in the IBM Cloud Docs.

provider "ibm" {
  ibmcloud_api_key = "XXXXXXXXXX"
  region           = "us-south"
}

module "postgresql_db" {
  source            = "terraform-ibm-modules/icd-postgresql/ibm"
  version           = "latest" # Replace "latest" with a release version to lock into a specific release
  resource_group_id = "xxXXxxXXxXxXXXXxxXxxxXXXXxXXXXX"
  name              = "my-instance"
  region            = "us-south"
}

Required IAM access policies

You need the following permissions to run this module.

• Account Management
  • Databases for PostgreSQL service
    • Editor role access

To attach access management tags to resources in this module, you need the following permissions.

• IAM Services
  • Tagging service
    • Administrator platform access

Examples

• Restore from backup example
• Basic with read-only replica example
• Complete example with BYOK encryption, CBR rules and VPE creation
• Financial Services Cloud profile example with autoscaling enabled
• Point in time recovery example (PITR)

Requirements

Name	Version
terraform	>= 1.3.0, <1.7.0
ibm	>= 1.62.0, <2.0.0
time	>= 0.9.1

Modules

Name	Source	Version
cbr_rule	terraform-ibm-modules/cbr/ibm//modules/cbr-rule-module	1.18.0

Resources

Name	Type
ibm_database.postgresql_db	resource
ibm_iam_authorization_policy.kms_policy	resource
ibm_resource_key.service_credentials	resource
ibm_resource_tag.postgresql_tag	resource
time_sleep.wait_for_authorization_policy	resource
ibm_database_connection.database_connection	data source

Inputs

Name	Description	Type	Default	Required
access_tags	A list of access tags to apply to the PostgreSQL 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	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	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://ibm.biz/autoscaling-considerations 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	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	The CRN of a Key Protect key that you want to use for encrypting the disk that holds deployment backups. Only used if var.kms_encryption_enabled is set to true. BYOK for backups is available only in US regions us-south and us-east, and in eu-de. Only keys in the us-south and eu-de are durable to region failures. To ensure that your backups are available even if a region failure occurs, use a key from us-south or eu-de. Hyper Protect Crypto Services for IBM Cloud Databases backups is not currently supported. If no value is passed here, the value passed for the 'kms_key_crn' variable is used, unless 'use_default_backup_encryption_key' is set to 'true'. And if a HPCS value is passed for var.kms_key_crn, the database backup encryption uses the default encryption keys.	string	null	no
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 }))	[]	no
configuration	Database configuration	object({ max_connections = optional(number) max_prepared_transactions = optional(number) deadlock_timeout = optional(number) effective_io_concurrency = optional(number) max_replication_slots = optional(number) max_wal_senders = optional(number) shared_buffers = optional(number) synchronous_commit = optional(string) wal_level = optional(string) archive_timeout = optional(number) log_min_duration_statement = optional(number) })	null	no
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
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	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_cpu_count	Allocated dedicated CPU per member. For shared CPU, set to 0. For more information, see https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-resources-scaling	number	0	no
member_disk_mb	Allocated disk per member. For more information, see https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-resources-scaling	number	5120	no
member_host_flavor	Allocated host flavor per member. For more information, see https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/database#host_flavor	string	null	no
member_memory_mb	Allocated memory per-member. See the following doc for supported values: https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-resources-scaling	number	1024	no
members	Allocated number of members. Members can be scaled up but not down.	number	2	no
name	The name to give the Postgresql instance.	string	n/a	yes
pg_version	Version of the PostgreSQL instance to provision. If no value is passed, the current preferred version of IBM Cloud Databases is used.	string	null	no
pitr_id	(Optional) The ID of the source deployment PostgreSQL instance that you want to recover back to. The PostgreSQL instance is expected to be in an up and in running state.	string	null	no
pitr_time	(Optional) The timestamp in UTC format (%Y-%m-%dT%H:%M:%SZ) for any time in the last 7 days that you want to restore to. To retrieve the timestamp, run the command (ibmcloud cdb postgresql earliest-pitr-timestamp ). For more info on Point-in-time Recovery, see https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-pitr	string	null	no
region	The region where you want to deploy your instance.	string	"us-south"	no
remote_leader_crn	A CRN of the leader database to make the replica(read-only) deployment. The leader database is created by a database deployment with the same service ID. A read-only replica is set up to replicate all of your data from the leader deployment to the replica deployment by using asynchronous replication. For more information, see https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-read-only-replicas	string	null	no
resource_group_id	The resource group ID where the PostgreSQL instance will be created.	string	n/a	yes
resource_tags	Optional list of tags to be added to the PostgreSQL instance.	list(string)	[]	no
service_credential_names	Map of name, role for service credentials that you want to create for the database	map(string)	{}	no
service_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
skip_iam_authorization_policy	Set to true to skip the creation of an IAM authorization policy that permits all PostgreSQL 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
use_default_backup_encryption_key	Set to true to use default ICD randomly generated keys.	bool	false	no
users	A list of users that you want to create on the database. 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 Postgres instance. This blocks creates native postgres database users, more info on that can be found here https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-user-management&interface=ui	list(object({ name = string password = string # pragma: allowlist secret type = string # "type" is required to generate the connection string for the outputs. role = optional(string) }))	[]	no

Outputs

Name	Description
adminuser	Database admin user name
cbr_rule_ids	CBR rule ids created to restrict Postgresql
certificate_base64	Database connection certificate
crn	Postgresql instance crn
guid	Postgresql instance guid
hostname	Database connection hostname
id	Postgresql instance id
port	Database connection port
service_credentials_json	Service credentials json map
service_credentials_object	Service credentials object
version	Postgresql 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.

To set up your local development environment, see Local development setup in the project documentation.