API Reference

CloudNativePG extends the Kubernetes API defining the following custom resources:

  • :ref:`Backup<Backup>`
    
  • :ref:`Cluster<Cluster>`
    
  • :ref:`Pooler<Pooler>`
    
  • :ref:`ScheduledBackup<ScheduledBackup>`
    

All the resources are defined in the postgresql.cnpg.io/v1 API.

Please refer to the Configuration Samples ” of the documentation for examples of usage.

Below you will find a description of the defined resources:

AffinityConfiguration

AffinityConfiguration contains the info we need to create the affinity rules for Pods

Name

Description

Type

`enablePodAntiAffinity `

Activates anti-affinity for the pods. The operator will define pods anti-affinity unless this field is explicitly set to false

*bool

`topologyKey `

TopologyKey to use for anti-affinity configuration. See k8s documentation for more info on that - mandatory

string

`nodeSelector `

NodeSelector is map of key-value pairs used to define the nodes on which the pods can run. More info: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/

map[string]string

`nodeAffinity `

NodeAffinity describes node affinity scheduling rules for the pod. More info: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity

*corev1.NodeAffinity

`tolerations `

Tolerations is a list of Tolerations that should be set for all the pods, in order to allow them to run on tainted nodes. More info: https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/

[]corev1.Toleration

`podAntiAffinityType `

PodAntiAffinityType allows the user to decide whether pod anti-affinity between cluster instance has to be considered a strong requirement during scheduling or not. Allowed values are: “preferred” (default if empty) or “required”. Setting it to “required”, could lead to instances remaining pending until new kubernetes nodes are added if all the existing nodes don’t match the required pod anti-affinity rule. More info: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity

string

additionalPodAntiAffinity

AdditionalPodAntiAffinity allows to specify pod anti-affinity terms to be added to the ones generated by the operator if EnablePodAntiAffinity is set to true (default) or to be used exclusively if set to false.

*corev1.PodAntiAffinity

`additionalPodAffinity `

AdditionalPodAffinity allows to specify pod affinity terms to be passed to all the cluster’s pods.

*corev1.PodAffinity

AzureCredentials

AzureCredentials is the type for the credentials to be used to upload files to Azure Blob Storage. The connection string contains every needed information. If the connection string is not specified, we’ll need the storage account name and also one (and only one) of:

  • storageKey - storageSasToken

  • inheriting the credentials from the pod environment by setting inheritFromAzureAD to true

Name

Description

Type

`connectionString `

The connection string to be used

networking page

`storageAccount `

The storage account where to upload data

networking page

`storageKey `

The storage account key to be used in conjunction with the storage account name

networking page

`storageSasToken `

A shared-access-signature to be used in conjunction with the storage account name

networking page

inheritFromAzureAD

Use the Azure AD based authentication without providing explicitly the keys. - mandatory

bool

Backup

Backup is the Schema for the backups API

Name

Description

Type

metadata

networking page

`spec `

Specification of the desired behavior of the backup. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

BackupSpec

`status `

Most recently observed status of the backup. This data may not be up to date. Populated by the system. Read-only. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

BackupStatus

BackupConfiguration

BackupConfiguration defines how the backup of the cluster are taken. Currently the only supported backup method is barmanObjectStore. For details and examples refer to the Backup and Recovery section of the documentation

Name

Description

Type

barmanObjectStore

The configuration for the barman-cloud tool suite

networking page

`retentionPolicy `

RetentionPolicy is the retention policy to be used for backups and WALs (i.e. ‘60d’). The retention policy is expressed in the form of XXu where XX is a positive integer and u is in [dwm] - days, weeks, months.

string

`target `

The policy to decide which instance should perform backups. Available options are empty string, which will default to prefer-standby policy, primary to have backups run always on primary instances, prefer-standby to have backups run preferably on the most updated standby, if available.

BackupTarget

BackupList

BackupList contains a list of Backup

Name

Description

Type

metadata

Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

networking page

`items `

List of backups - mandatory

networking page

BackupSource

BackupSource contains the backup we need to restore from, plus some information that could be needed to correctly restore it.

Name

Description

Type

endpointCA

EndpointCA store the CA bundle of the barman endpoint. Useful when using self-signed certificates to avoid errors with certificate issuer and barman-cloud-wal-archive.

networking page

BackupSpec

BackupSpec defines the desired state of Backup

Name

Description

Type

cluster

The cluster to backup

LocalObjectReference

`target `

The policy to decide which instance should perform this backup. If empty, it defaults to cluster.spec.backup.target. Available options are empty string, primary and prefer-standby. primary to have backups run always on primary instances, prefer-standby to have backups run preferably on the most updated standby, if available.

BackupTarget

BackupStatus

BackupStatus defines the observed state of Backup

Name

Description

Type

`endpointCA `

EndpointCA store the CA bundle of the barman endpoint. Useful when using self-signed certificates to avoid errors with certificate issuer and barman-cloud-wal-archive.

networking page

`endpointURL `

Endpoint to be used to upload data to the cloud, overriding the automatic endpoint discovery

string

destinationPath

The path where to store the backup (i.e. s3://bucket/path/to/folder) this path, with different destination folders, will be used for WALs and for data. This may not be populated in case of errors.

string

`serverName `

The server name on S3, the cluster name is used if this parameter is omitted

string

`encryption `

Encryption method required to S3 API

string

`backupId `

The ID of the Barman backup

string

`backupName `

The Name of the Barman backup

string

`phase `

The last backup status

BackupPhase

`startedAt `

When the backup was started

networking page

`stoppedAt `

When the backup was terminated

networking page

`beginWal `

The starting WAL

string

`endWal `

The ending WAL

string

`beginLSN `

The starting xlog

string

`endLSN `

The ending xlog

string

`error `

The detected error

string

`commandOutput `

Unused. Retained for compatibility with old versions.

string

`commandError `

The backup command output in case of error

string

`instanceID `

Information to identify the instance where the backup has been taken from

networking page

BarmanCredentials

BarmanCredentials an object containing the potential credentials for each cloud provider

Name

Description

Type

googleCredentials

The credentials to use to upload data to Google Cloud Storage

networking page

`s3Credentials `

The credentials to use to upload data to S3

networking page

`azureCredentials `

The credentials to use to upload data to Azure Blob Storage

networking page

BarmanObjectStoreConfiguration

BarmanObjectStoreConfiguration contains the backup configuration using Barman against an S3-compatible object storage

Name

Description

Type

`endpointURL `

Endpoint to be used to upload data to the cloud, overriding the automatic endpoint discovery

string

`endpointCA `

EndpointCA store the CA bundle of the barman endpoint. Useful when using self-signed certificates to avoid errors with certificate issuer and barman-cloud-wal-archive

networking page

destinationPath

The path where to store the backup (i.e. s3://bucket/path/to/folder) this path, with different destination folders, will be used for WALs and for data - mandatory

string

`serverName `

The server name on S3, the cluster name is used if this parameter is omitted

string

`wal `

The configuration for the backup of the WAL stream. When not defined, WAL files will be stored uncompressed and may be unencrypted in the object store, according to the bucket default policy.

networking page

`data `

The configuration to be used to backup the data files When not defined, base backups files will be stored uncompressed and may be unencrypted in the object store, according to the bucket default policy.

networking page

`tags `

Tags is a list of key value pairs that will be passed to the Barman –tags option.

map[string]string

`historyTags `

HistoryTags is a list of key value pairs that will be passed to the Barman –history-tags option.

map[string]string

BootstrapConfiguration

BootstrapConfiguration contains information about how to create the PostgreSQL cluster. Only a single bootstrap method can be defined among the supported ones. initdb will be used as the bootstrap method if left unspecified. Refer to the Bootstrap page of the documentation for more information.

Name

Description

Type

`initdb `

Bootstrap the cluster via initdb

networking page

`recovery `

Bootstrap the cluster from a backup

networking page

pg_basebackup

Bootstrap the cluster taking a physical backup of another compatible PostgreSQL instance

networking page

BootstrapInitDB

BootstrapInitDB is the configuration of the bootstrap process when initdb is used Refer to the Bootstrap page of the documentation for more information.

Name

Description

Type

`database `

Name of the database used by the application. Default: app. - mandatory

string

`owner `

Name of the owner of the database in the instance to be used by applications. Defaults to the value of the database key. - mandatory

string

`secret `

Name of the secret containing the initial credentials for the owner of the user database. If empty a new secret will be created from scratch

networking page

`options `

The list of options that must be passed to initdb when creating the cluster. Deprecated: This could lead to inconsistent configurations, please use the explicit provided parameters instead. If defined, explicit values will be ignored.

[]string

`dataChecksums `

Whether the -k option should be passed to initdb, enabling checksums on data pages (default: false)

*bool

`encoding `

The value to be passed as option –encoding for initdb (default:UTF8)

string

`localeCollate `

The value to be passed as option –lc-collate for initdb (default:C)

string

`localeCType `

The value to be passed as option –lc-ctype for initdb (default:C)

string

`walSegmentSize `

The value in megabytes (1 to 1024) to be passed to the –wal-segsize option for initdb (default: empty, resulting in PostgreSQL default: 16MB)

int

`postInitSQL `

List of SQL queries to be executed as a superuser immediately after the cluster has been created - to be used with extreme care (by default empty)

[]string

`postInitApplicationSQL `

List of SQL queries to be executed as a superuser in the application database right after is created - to be used with extreme care (by default empty)

[]string

`postInitTemplateSQL `

List of SQL queries to be executed as a superuser in the template1 after the cluster has been created - to be used with extreme care (by default empty)

[]string

`import `

Bootstraps the new cluster by importing data from an existing PostgreSQL instance using logical backup (pg_dump and pg_restore)

networking page

postInitApplicationSQLRefs

PostInitApplicationSQLRefs points references to ConfigMaps or Secrets which contain SQL files, the general implementation order to these references is from all Secrets to all ConfigMaps, and inside Secrets or ConfigMaps, the implementation order is same as the order of each array (by default empty)

networking page

BootstrapPgBaseBackup

BootstrapPgBaseBackup contains the configuration required to take a physical backup of an existing PostgreSQL cluster

Name

Description

Type

`source `

The name of the server of which we need to take a physical backup - mandatory

string

database

Name of the database used by the application. Default: app. - mandatory

string

`owner `

Name of the owner of the database in the instance to be used by applications. Defaults to the value of the database key. - mandatory

string

`secret `

Name of the secret containing the initial credentials for the owner of the user database. If empty a new secret will be created from scratch

networking page

BootstrapRecovery

BootstrapRecovery contains the configuration required to restore from an existing cluster using 3 methodologies: external cluster, volume snapshots or backup objects. Full recovery and Point-In-Time Recovery are supported. The method can be also be used to create clusters in continuous recovery (replica clusters), also supporting cascading replication when instances > 1. Once the cluster exits recovery, the password for the superuser will be changed through the provided secret. Refer to the Bootstrap page of the documentation for more information.

Name

Description

Type

`backup `

The backup object containing the physical base backup from which to initiate the recovery procedure. Mutually exclusive with source and volumeSnapshots.

networking page

`source `

The external cluster whose backup we will restore. This is also used as the name of the folder under which the backup is stored, so it must be set to the name of the source cluster Mutually exclusive with backup and volumeSnapshots.

string

volumeSnapshots

The static PVC data source(s) from which to initiate the recovery procedure. Currently supporting VolumeSnapshot and PersistentVolumeClaim resources that map an existing PVC group, compatible with CloudNativePG, and taken with a cold backup copy on a fenced Postgres instance (limitation which will be removed in the future when online backup will be implemented). Mutually exclusive with backup and source.

networking page

`recoveryTarget `

By default, the recovery process applies all the available WAL files in the archive (full recovery). However, you can also end the recovery as soon as a consistent state is reached or recover to a point-in-time (PITR) by specifying a RecoveryTarget object, as expected by PostgreSQL (i.e., timestamp, transaction Id, LSN, …). More info: https://www.postgresql.org/docs/current/runtime-config-wal.html#RUNTIME-CONFIG-WAL-RECOVERY-TARGET

networking page

`database `

Name of the database used by the application. Default: app. - mandatory

string

`owner `

Name of the owner of the database in the instance to be used by applications. Defaults to the value of the database key. - mandatory

string

`secret `

Name of the secret containing the initial credentials for the owner of the user database. If empty a new secret will be created from scratch

networking page

CertificatesConfiguration

CertificatesConfiguration contains the needed configurations to handle server certificates.

Name

Description

Type

`serverCASecret `

The secret containing the Server CA certificate. If not defined, a new secret will be created with a self-signed CA and will be used to generate the TLS certificate ServerTLSSecret.<br /> <br /> Contains:<br /> <br /> - ca.crt: CA that should be used to validate the server certificate, used as sslrootcert in client connection strings.<br /> - ca.key: key used to generate Server SSL certs, if ServerTLSSecret is provided, this can be omitted.<br />

string

`serverTLSSecret `

The secret of type kubernetes.io/tls containing the server TLS certificate and key that will be set as ssl_cert_file and ssl_key_file so that clients can connect to postgres securely. If not defined, ServerCASecret must provide also ca.key and a new secret will be created using the provided CA.

string

replicationTLSSecret

The secret of type kubernetes.io/tls containing the client certificate to authenticate as the streaming_replica user. If not defined, ClientCASecret must provide also ca.key, and a new secret will be created using the provided CA.

string

`clientCASecret `

The secret containing the Client CA certificate. If not defined, a new secret will be created with a self-signed CA and will be used to generate all the client certificates.<br /> <br /> Contains:<br /> <br /> - ca.crt: CA that should be used to validate the client certificates, used as ssl_ca_file of all the instances.<br /> - ca.key: key used to generate client certificates, if ReplicationTLSSecret is provided, this can be omitted.<br />

string

`serverAltDNSNames `

The list of the server alternative DNS names to be added to the generated server TLS certificates, when required.

[]string

CertificatesStatus

CertificatesStatus contains configuration certificates and related expiration dates.

Name

Description

Type

expirations

Expiration dates for all certificates.

map[string]string

Cluster

Cluster is the Schema for the PostgreSQL API

Name

Description

Type

metadata

networking page

`spec `

Specification of the desired behavior of the cluster. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

ClusterSpec

`status `

Most recently observed status of the cluster. This data may not be up to date. Populated by the system. Read-only. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

ClusterStatus

ClusterList

ClusterList contains a list of Cluster

Name

Description

Type

metadata

Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

networking page

`items `

List of clusters - mandatory

networking page

ClusterSpec

ClusterSpec defines the desired state of Cluster

Name

Description

Type

`description `

Description of this PostgreSQL cluster

string

`inheritedMetadata `

Metadata that will be inherited by all objects related to the Cluster

networking page

`imageName `

Name of the container image, supporting both tags (<image>:<tag>) and digests for deterministic and repeatable deployments (<image>:<tag>@sha256:<digestValue>)

string

`imagePullPolicy `

Image pull policy. One of Always, Never or IfNotPresent. If not defined, it defaults to IfNotPresent. Cannot be updated. More info: https://kubernetes.io/docs/concepts/containers/images#updating-images

corev1.PullPolicy

`schedulerName `

If specified, the pod will be dispatched by specified Kubernetes scheduler. If not specified, the pod will be dispatched by the default scheduler. More info: https://kubernetes.io/docs/concepts/scheduling-eviction/kube-scheduler/

string

`postgresUID `

The UID of the postgres user inside the image, defaults to 26

int64

`postgresGID `

The GID of the postgres user inside the image, defaults to 26

int64

`instances `

Number of instances required in the cluster - mandatory

int

`minSyncReplicas `

Minimum number of instances required in synchronous replication with the primary. Undefined or 0 allow writes to complete when no standby is available.

int

`maxSyncReplicas `

The target value for the synchronous replication quorum, that can be decreased if the number of ready standbys is lower than this. Undefined or 0 disable synchronous replication.

int

`postgresql `

Configuration of the PostgreSQL server

PostgresConfiguration

`replicationSlots `

Replication slots management configuration

networking page

`bootstrap `

Instructions to bootstrap this cluster

networking page

`replica `

Replica cluster configuration

networking page

`superuserSecret `

The secret containing the superuser password. If not defined a new secret will be created with a randomly generated password

networking page

`enableSuperuserAccess `

When this option is enabled, the operator will use the SuperuserSecret to update the postgres user password (if the secret is not present, the operator will automatically create one). When this option is disabled, the operator will ignore the SuperuserSecret content, delete it when automatically created, and then blank the password of the postgres user by setting it to NULL. Enabled by default.

*bool

`certificates `

The configuration for the CA and related certificates

networking page

`imagePullSecrets `

The list of pull secrets to be used to pull the images

networking page

`storage `

Configuration of the storage of the instances

StorageConfiguration

`serviceAccountTemplate `

Configure the generation of the service account

networking page

`walStorage `

Configuration of the storage for PostgreSQL WAL (Write-Ahead Log)

networking page

`startDelay `

The time in seconds that is allowed for a PostgreSQL instance to successfully start up (default 30)

int32

`stopDelay `

The time in seconds that is allowed for a PostgreSQL instance to gracefully shutdown (default 30)

int32

`switchoverDelay `

The time in seconds that is allowed for a primary PostgreSQL instance to gracefully shutdown during a switchover. Default value is 40000000, greater than one year in seconds, big enough to simulate an infinite delay

int32

`failoverDelay `

The amount of time (in seconds) to wait before triggering a failover after the primary PostgreSQL instance in the cluster was detected to be unhealthy

int32

`affinity `

Affinity/Anti-affinity rules for Pods

AffinityConfiguration

topologySpreadConstraints

TopologySpreadConstraints specifies how to spread matching pods among the given topology. More info: https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/

[]corev1.TopologySpreadConstraint

`resources `

Resources requirements of every generated Pod. Please refer to https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ for more information.

networking page

`priorityClassName `

Name of the priority class which will be used in every generated Pod, if the PriorityClass specified does not exist, the pod will not be able to schedule. Please refer to https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/#priorityclass for more information

string

`primaryUpdateStrategy `

Deployment strategy to follow to upgrade the primary server during a rolling update procedure, after all replicas have been successfully updated: it can be automated (unsupervised - default) or manual (supervised)

PrimaryUpdateStrategy

`primaryUpdateMethod `

Method to follow to upgrade the primary server during a rolling update procedure, after all replicas have been successfully updated: it can be with a switchover (switchover) or in-place (restart - default)

PrimaryUpdateMethod

`backup `

The configuration to be used for backups

networking page

`nodeMaintenanceWindow `

Define a maintenance window for the Kubernetes nodes

networking page

`monitoring `

The configuration of the monitoring infrastructure of this cluster

networking page

`externalClusters `

The list of external clusters which are used in the configuration

networking page

`logLevel `

The instances’ log level, one of the following values: error, warning, info (default), debug, trace

string

`projectedVolumeTemplate `

Template to be used to define projected volumes, projected volumes will be mounted under /projected base folder

*corev1.ProjectedVolumeSource

`env `

Env follows the Env format to pass environment variables to the pods created in the cluster

[]corev1.EnvVar

`envFrom `

EnvFrom follows the EnvFrom format to pass environment variables sources to the pods to be used by Env

[]corev1.EnvFromSource

`managed `

The configuration that is used by the portions of PostgreSQL that are managed by the instance manager

networking page

`seccompProfile `

The SeccompProfile applied to every Pod and Container. Defaults to: RuntimeDefault

*corev1.SeccompProfile

ClusterStatus

ClusterStatus defines the observed state of Cluster

Name

Description

Type

`instances `

The total number of PVC Groups detected in the cluster. It may differ from the number of existing instance pods.

int

`readyInstances `

The total number of ready instances in the cluster. It is equal to the number of ready instance pods.

int

`instancesStatus `

InstancesStatus indicates in which status the instances are

map[utils.PodStatus][]string

`instancesReportedState `

The reported state of the instances during the last reconciliation loop

networking page

`managedRolesStatus `

ManagedRolesStatus reports the state of the managed roles in the cluster

ManagedRoles

`timelineID `

The timeline of the Postgres cluster

int

`topology `

Instances topology.

Topology

`latestGeneratedNode `

ID of the latest generated node (used to avoid node name clashing)

int

`currentPrimary `

Current primary instance

string

`targetPrimary `

Target primary instance, this is different from the previous one during a switchover or a failover

string

`pvcCount `

How many PVCs have been created by this cluster

int32

`jobCount `

How many Jobs have been created by this cluster

int32

`danglingPVC `

List of all the PVCs created by this cluster and still available which are not attached to a Pod

[]string

`resizingPVC `

List of all the PVCs that have ResizingPVC condition.

[]string

`initializingPVC `

List of all the PVCs that are being initialized by this cluster

[]string

`healthyPVC `

List of all the PVCs not dangling nor initializing

[]string

`unusablePVC `

List of all the PVCs that are unusable because another PVC is missing

[]string

`writeService `

Current write pod

string

`readService `

Current list of read pods

string

`phase `

Current phase of the cluster

string

`phaseReason `

Reason for the current phase

string

`secretsResourceVersion `

The list of resource versions of the secrets managed by the operator. Every change here is done in the interest of the instance manager, which will refresh the secret data

SecretsResourceVersion

`configMapResourceVersion `

The list of resource versions of the configmaps, managed by the operator. Every change here is done in the interest of the instance manager, which will refresh the configmap data

ConfigMapResourceVersion

`certificates `

The configuration for the CA and related certificates, initialized with defaults.

CertificatesStatus

`firstRecoverabilityPoint `

The first recoverability point, stored as a date in RFC3339 format

string

`lastSuccessfulBackup `

Stored as a date in RFC3339 format

string

`lastFailedBackup `

Stored as a date in RFC3339 format

string

`cloudNativePGCommitHash `

The commit hash number of which this operator running

string

`currentPrimaryTimestamp `

The timestamp when the last actual promotion to primary has occurred

string

currentPrimaryFailingSinceTimestamp

The timestamp when the primary was detected to be unhealthy This field is reported when spec.failoverDelay is populated or during online upgrades

string

`targetPrimaryTimestamp `

The timestamp when the last request for a new primary has occurred

string

`poolerIntegrations `

The integration needed by poolers referencing the cluster

networking page

`cloudNativePGOperatorHash `

The hash of the binary of the operator

string

`onlineUpdateEnabled `

OnlineUpdateEnabled shows if the online upgrade is enabled inside the cluster

bool

`azurePVCUpdateEnabled `

AzurePVCUpdateEnabled shows if the PVC online upgrade is enabled for this cluster

bool

`conditions `

Conditions for cluster object

[]metav1.Condition

`instanceNames `

List of instance names in the cluster

[]string

ConfigMapKeySelector

ConfigMapKeySelector contains enough information to let you locate the key of a ConfigMap

Name

Description

Type

key

The key to select - mandatory

string

ConfigMapResourceVersion

ConfigMapResourceVersion is the resource versions of the secrets managed by the operator

Name

Description

Type

metrics

A map with the versions of all the config maps used to pass metrics. Map keys are the config map names, map values are the versions

map[string]string

DataBackupConfiguration

DataBackupConfiguration is the configuration of the backup of the data directory

Name

Description

Type

`compression `

Compress a backup file (a tar file per tablespace) while streaming it to the object store. Available options are empty string (no compression, default), gzip, bzip2 or snappy.

CompressionType

`encryption `

Whenever to force the encryption of files (if the bucket is not already configured for that). Allowed options are empty string (use the bucket policy, default), AES256 and aws:kms

EncryptionType

immediateCheckpoint

Control whether the I/O workload for the backup initial checkpoint will be limited, according to the checkpoint_completion_target setting on the PostgreSQL server. If set to true, an immediate checkpoint will be used, meaning PostgreSQL will complete the checkpoint as soon as possible. false by default.

bool

`jobs `

The number of parallel jobs to be used to upload the backup, defaults to 2

*int32

DataSource

DataSource contains the configuration required to bootstrap a PostgreSQL cluster from an existing storage

Name

Description

Type

`storage `

Configuration of the storage of the instances - mandatory

corev1.TypedLocalObjectReference

walStorage

Configuration of the storage for PostgreSQL WAL (Write-Ahead Log)

*corev1.TypedLocalObjectReference

EmbeddedObjectMetadata

EmbeddedObjectMetadata contains metadata to be inherited by all resources related to a Cluster

Name

Description

Type

`labels `

map[string]string

annotations

map[string]string

ExternalCluster

ExternalCluster represents the connection parameters to an external cluster which is used in the other sections of the configuration

Name

Description

Type

`name `

The server name, required - mandatory

string

connectionParameters

The list of connection parameters, such as dbname, host, username, etc

map[string]string

`sslCert `

The reference to an SSL certificate to be used to connect to this instance

networking page

`sslKey `

The reference to an SSL private key to be used to connect to this instance

networking page

`sslRootCert `

The reference to an SSL CA public key to be used to connect to this instance

networking page

`password `

The reference to the password to be used to connect to the server

networking page

`barmanObjectStore `

The configuration for the barman-cloud tool suite

networking page

GoogleCredentials

GoogleCredentials is the type for the Google Cloud Storage credentials. This needs to be specified even if we run inside a GKE environment.

Name

Description

Type

`gkeEnvironment `

If set to true, will presume that it’s running inside a GKE environment, default to false. - mandatory

bool

applicationCredentials

The secret containing the Google Cloud Storage JSON file with the credentials

networking page

Import

Import contains the configuration to init a database from a logic snapshot of an externalCluster

Name

Description

Type

`source `

The source of the import - mandatory

ImportSource

`type `

The import type. Can be microservice or monolith. - mandatory

SnapshotType

`databases `

The databases to import - mandatory

[]string

`roles `

The roles to import

[]string

postImportApplicationSQL

List of SQL queries to be executed as a superuser in the application database right after is imported - to be used with extreme care (by default empty). Only available in microservice type.

[]string

`schemaOnly `

When set to true, only the pre-data and post-data sections of pg_restore are invoked, avoiding data import. Default: false.

bool

ImportSource

ImportSource describes the source for the logical snapshot

Name

Description

Type

externalCluster

The name of the externalCluster used for import - mandatory

string

InstanceID

InstanceID contains the information to identify an instance

Name

Description

Type

`podName `

The pod name

string

ContainerID

The container ID

string

InstanceReportedState

InstanceReportedState describes the last reported state of an instance during a reconciliation loop

Name

Description

Type

`isPrimary `

indicates if an instance is the primary one - mandatory

bool

timeLineID

indicates on which TimelineId the instance is

int

LDAPBindAsAuth

LDAPBindAsAuth provides the required fields to use the bind authentication for LDAP

Name

Description

Type

prefix

Prefix for the bind authentication option

string

suffix

Suffix for the bind authentication option

string

LDAPBindSearchAuth

LDAPBindSearchAuth provides the required fields to use the bind+search LDAP authentication process

Name

Description

Type

`baseDN `

Root DN to begin the user search

string

`bindDN `

DN of the user to bind to the directory

string

`bindPassword `

Secret with the password for the user to bind to the directory

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searchAttribute

Attribute to match against the username

string

`searchFilter `

Search filter to use when doing the search+bind authentication

string

LDAPConfig

LDAPConfig contains the parameters needed for LDAP authentication

Name

Description

Type

`server `

LDAP hostname or IP address

string

`port `

LDAP server port

int

`scheme `

LDAP schema to be used, possible options are ldap and ldaps

LDAPScheme

`tls `

Set to ‘true’ to enable LDAP over TLS. ‘false’ is default

bool

`bindAsAuth `

Bind as authentication configuration

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bindSearchAuth

Bind+Search authentication configuration

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LocalObjectReference

LocalObjectReference contains enough information to let you locate a local object with a known type inside the same namespace

Name

Description

Type

name

Name of the referent. - mandatory

string

ManagedConfiguration

ManagedConfiguration represents the portions of PostgreSQL that are managed by the instance manager

Name

Description

Type

roles

Database roles managed by the Cluster

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ManagedRoles

ManagedRoles tracks the status of a cluster’s managed roles

Name

Description

Type

`byStatus `

ByStatus gives the list of roles in each state

map[RoleStatus][]string

cannotReconcile

CannotReconcile lists roles that cannot be reconciled in PostgreSQL, with an explanation of the cause

map[string][]string

`passwordStatus `

PasswordStatus gives the last transaction id and password secret version for each managed role

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Metadata

Metadata is a structure similar to the metav1.ObjectMeta, but still parseable by controller-gen to create a suitable CRD for the user. The comment of PodTemplateSpec has an explanation of why we are not using the core data types.

Name

Description

Type

`labels `

Map of string keys and values that can be used to organize and categorize (scope and select) objects. May match selectors of replication controllers and services. More info: http://kubernetes.io/docs/user-guide/labels

map[string]string

annotations

Annotations is an unstructured key value map stored with a resource that may be set by external tools to store and retrieve arbitrary metadata. They are not queryable and should be preserved when modifying objects. More info: http://kubernetes.io/docs/user-guide/annotations

map[string]string

MonitoringConfiguration

MonitoringConfiguration is the type containing all the monitoring configuration for a certain cluster

Name

Description

Type

`disableDefaultQueries `

Whether the default queries should be injected. Set it to true if you don’t want to inject default queries into the cluster. Default: false.

*bool

customQueriesConfigMap

The list of config maps containing the custom queries

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`customQueriesSecret `

The list of secrets containing the custom queries

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`enablePodMonitor `

Enable or disable the PodMonitor

bool

NodeMaintenanceWindow

NodeMaintenanceWindow contains information that the operator will use while upgrading the underlying node.

This option is only useful when the chosen storage prevents the Pods from being freely moved across nodes.

Name

Description

Type

inProgress

Is there a node maintenance activity in progress? - mandatory

bool

`reusePVC `

Reuse the existing PVC (wait for the node to come up again) or not (recreate it elsewhere - when instances >1) - mandatory

*bool

PasswordState

PasswordState represents the state of the password of a managed RoleConfiguration

Name

Description

Type

`transactionID `

the last transaction ID to affect the role definition in PostgreSQL

int64

resourceVersion

the resource version of the password secret

string

PgBouncerIntegrationStatus

PgBouncerIntegrationStatus encapsulates the needed integration for the pgbouncer poolers referencing the cluster

Name

Description

Type

secrets

[]string

PgBouncerSecrets

PgBouncerSecrets contains the versions of the secrets used by pgbouncer

Name

Description

Type

authQuery

The auth query secret version

SecretVersion

PgBouncerSpec

PgBouncerSpec defines how to configure PgBouncer

Name

Description

Type

`poolMode `

The pool mode - mandatory

PgBouncerPoolMode

authQuerySecret

The credentials of the user that need to be used for the authentication query. In case it is specified, also an AuthQuery (e.g. “SELECT usename, passwd FROM pg_shadow WHERE usename=$1”) has to be specified and no automatic CNPG Cluster integration will be triggered.

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`authQuery `

The query that will be used to download the hash of the password of a certain user. Default: “SELECT usename, passwd FROM user_search($1)”. In case it is specified, also an AuthQuerySecret has to be specified and no automatic CNPG Cluster integration will be triggered.

string

`parameters `

Additional parameters to be passed to PgBouncer - please check the CNPG documentation for a list of options you can configure

map[string]string

`pg_hba `

PostgreSQL Host Based Authentication rules (lines to be appended to the pg_hba.conf file)

[]string

`paused `

When set to true, PgBouncer will disconnect from the PostgreSQL server, first waiting for all queries to complete, and pause all new client connections until this value is set to false (default). Internally, the operator calls PgBouncer’s PAUSE and RESUME commands.

*bool

PodTemplateSpec

PodTemplateSpec is a structure allowing the user to set a template for Pod generation.

Unfortunately we can’t use the corev1.PodTemplateSpec type because the generated CRD won’t have the field for the metadata section.

References: https://github.com/kubernetes-sigs/controller-tools/issues/385 https://github.com/kubernetes-sigs/controller-tools/issues/448 https://github.com/prometheus-operator/prometheus-operator/issues/3041

Name

Description

Type

metadata

Standard object’s metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

EmbeddedObjectMetadata

`spec `

Specification of the desired behavior of the pod. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

corev1.PodSpec

Pooler

Pooler is the Schema for the poolers API

Name

Description

Type

metadata

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`spec `

PoolerSpec

`status `

PoolerStatus

PoolerIntegrations

PoolerIntegrations encapsulates the needed integration for the poolers referencing the cluster

Name

Description

Type

pgBouncerIntegration

PgBouncerIntegrationStatus

PoolerList

PoolerList contains a list of Pooler

Name

Description

Type

metadata

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`items `

  • mandatory

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PoolerMonitoringConfiguration

PoolerMonitoringConfiguration is the type containing all the monitoring configuration for a certain Pooler.

Mirrors the Cluster’s MonitoringConfiguration but without the custom queries part for now.

Name

Description

Type

enablePodMonitor

Enable or disable the PodMonitor

bool

PoolerSecrets

PoolerSecrets contains the versions of all the secrets used

Name

Description

Type

`serverTLS `

The server TLS secret version

SecretVersion

`serverCA `

The server CA secret version

SecretVersion

`clientCA `

The client CA secret version

SecretVersion

pgBouncerSecrets

The version of the secrets used by PgBouncer

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PoolerSpec

PoolerSpec defines the desired state of Pooler

Name

Description

Type

`cluster `

This is the cluster reference on which the Pooler will work. Pooler name should never match with any cluster name within the same namespace. - mandatory

LocalObjectReference

`type `

Which instances we must forward traffic to? - mandatory

PoolerType

`instances `

The number of replicas we want - mandatory

int32

`template `

The template of the Pod to be created

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`pgbouncer `

The PgBouncer configuration - mandatory

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deploymentStrategy

The deployment strategy to use for pgbouncer to replace existing pods with new ones

*appsv1.DeploymentStrategy

`monitoring `

The configuration of the monitoring infrastructure of this pooler.

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PoolerStatus

PoolerStatus defines the observed state of Pooler

Name

Description

Type

`secrets `

The resource version of the config object

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instances

The number of pods trying to be scheduled

int32

PostInitApplicationSQLRefs

PostInitApplicationSQLRefs points references to ConfigMaps or Secrets which contain SQL files, the general implementation order to these references is from all Secrets to all ConfigMaps, and inside Secrets or ConfigMaps, the implementation order is same as the order of each array

Name

Description

Type

`secretRefs `

SecretRefs holds a list of references to Secrets

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configMapRefs

ConfigMapRefs holds a list of references to ConfigMaps

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PostgresConfiguration

PostgresConfiguration defines the PostgreSQL configuration

Name

Description

Type

`parameters `

PostgreSQL configuration options (postgresql.conf)

map[string]string

`pg_hba `

PostgreSQL Host Based Authentication rules (lines to be appended to the pg_hba.conf file)

[]string

syncReplicaElectionConstraint

Requirements to be met by sync replicas. This will affect how the “synchronous_standby_names” parameter will be set up.

SyncReplicaElectionConstraints

`promotionTimeout `

Specifies the maximum number of seconds to wait when promoting an instance to primary. Default value is 40000000, greater than one year in seconds, big enough to simulate an infinite timeout

int32

`shared_preload_libraries `

Lists of shared preload libraries to add to the default ones

[]string

`ldap `

Options to specify LDAP configuration

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RecoveryTarget

RecoveryTarget allows to configure the moment where the recovery process will stop. All the target options except TargetTLI are mutually exclusive.

Name

Description

Type

`backupID `

The ID of the backup from which to start the recovery process. If empty (default) the operator will automatically detect the backup based on targetTime or targetLSN if specified. Otherwise use the latest available backup in chronological order.

string

`targetTLI `

The target timeline (“latest” or a positive integer)

string

`targetXID `

The target transaction ID

string

`targetName `

The target name (to be previously created with pg_create_restore_point)

string

`targetLSN `

The target LSN (Log Sequence Number)

string

`targetTime `

The target time as a timestamp in the RFC3339 standard

string

targetImmediate

End recovery as soon as a consistent state is reached

*bool

`exclusive `

Set the target to be exclusive. If omitted, defaults to false, so that in Postgres, recovery_target_inclusive will be true

*bool

ReplicaClusterConfiguration

ReplicaClusterConfiguration encapsulates the configuration of a replica cluster

Name

Description

Type

enabled

If replica mode is enabled, this cluster will be a replica of an existing cluster. Replica cluster can be created from a recovery object store or via streaming through pg_basebackup. Refer to the Replication page of the documentation for more information. - mandatory

bool

`source `

The name of the external cluster which is the replication origin - mandatory

string

ReplicationSlotsConfiguration

ReplicationSlotsConfiguration encapsulates the configuration of replication slots

Name

Description

Type

highAvailability

Replication slots for high availability configuration

networking page

`updateInterval `

Standby will update the status of the local replication slots every updateInterval seconds (default 30).

int

ReplicationSlotsHAConfiguration

ReplicationSlotsHAConfiguration encapsulates the configuration of the replication slots that are automatically managed by the operator to control the streaming replication connections with the standby instances for high availability (HA) purposes. Replication slots are a PostgreSQL feature that makes sure that PostgreSQL automatically keeps WAL files in the primary when a streaming client (in this specific case a replica that is part of the HA cluster) gets disconnected.

Name

Description

Type

`enabled `

If enabled, the operator will automatically manage replication slots on the primary instance and use them in streaming replication connections with all the standby instances that are part of the HA cluster. If disabled (default), the operator will not take advantage of replication slots in streaming connections with the replicas. This feature also controls replication slots in replica cluster, from the designated primary to its cascading replicas. This can only be set at creation time. - mandatory

*bool

slotPrefix

Prefix for replication slots managed by the operator for HA. It may only contain lower case letters, numbers, and the underscore character. This can only be set at creation time. By default set to _cnpg_.

string

RoleConfiguration

RoleConfiguration is the representation, in Kubernetes, of a PostgreSQL role with the additional field Ensure specifying whether to ensure the presence or absence of the role in the database

The defaults of the CREATE ROLE command are applied Reference: https://www.postgresql.org/docs/current/sql-createrole.html

Name

Description

Type

`name `

Name of the role - mandatory

string

`comment `

Description of the role

string

`ensure `

Ensure the role is present or absent - defaults to “present”

EnsureOption

`passwordSecret `

Secret containing the password of the role (if present) If null, the password will be ignored unless DisablePassword is set

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disablePassword

DisablePassword indicates that a role’s password should be set to NULL in Postgres

bool

`superuser `

Whether the role is a superuser who can override all access restrictions within the database - superuser status is dangerous and should be used only when really needed. You must yourself be a superuser to create a new superuser. Defaults is false.

bool

`createdb `

When set to true, the role being defined will be allowed to create new databases. Specifying false (default) will deny a role the ability to create databases.

bool

`createrole `

Whether the role will be permitted to create, alter, drop, comment on, change the security label for, and grant or revoke membership in other roles. Default is false.

bool

`inherit `

Whether a role “inherits” the privileges of roles it is a member of. Defaults is true.

*bool

`login `

Whether the role is allowed to log in. A role having the login attribute can be thought of as a user. Roles without this attribute are useful for managing database privileges, but are not users in the usual sense of the word. Default is false.

bool

`replication `

Whether a role is a replication role. A role must have this attribute (or be a superuser) in order to be able to connect to the server in replication mode (physical or logical replication) and in order to be able to create or drop replication slots. A role having the replication attribute is a very highly privileged role, and should only be used on roles actually used for replication. Default is false.

bool

`bypassrls `

Whether a role bypasses every row-level security (RLS) policy. Default is false.

bool

connectionLimit

If the role can log in, this specifies how many concurrent connections the role can make. -1 (the default) means no limit.

int64

`validUntil `

Date and time after which the role’s password is no longer valid. When omitted, the password will never expire (default).

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`inRoles `

List of one or more existing roles to which this role will be immediately added as a new member. Default empty.

[]string

RollingUpdateStatus

RollingUpdateStatus contains the information about an instance which is being updated

Name

Description

Type

imageName

The image which we put into the Pod - mandatory

string

startedAt

When the update has been started

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S3Credentials

S3Credentials is the type for the credentials to be used to upload files to S3. It can be provided in two alternative ways:

  • explicitly passing accessKeyId and secretAccessKey

  • inheriting the role from the pod environment by setting inheritFromIAMRole to true

Name

Description

Type

`accessKeyId `

The reference to the access key id

networking page

`secretAccessKey `

The reference to the secret access key

networking page

`region `

The reference to the secret containing the region name

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`sessionToken `

The references to the session key

networking page

inheritFromIAMRole

Use the role based authentication without providing explicitly the keys. - mandatory

bool

ScheduledBackup

ScheduledBackup is the Schema for the scheduledbackups API

Name

Description

Type

metadata

networking page

`spec `

Specification of the desired behavior of the ScheduledBackup. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

ScheduledBackupSpec

`status `

Most recently observed status of the ScheduledBackup. This data may not be up to date. Populated by the system. Read-only. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

ScheduledBackupStatus

ScheduledBackupList

ScheduledBackupList contains a list of ScheduledBackup

Name

Description

Type

metadata

Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

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`items `

List of clusters - mandatory

networking page

ScheduledBackupSpec

ScheduledBackupSpec defines the desired state of ScheduledBackup

Name

Description

Type

`suspend `

If this backup is suspended or not

*bool

`immediate `

If the first backup has to be immediately start after creation or not

*bool

`schedule `

The schedule does not follow the same format used in Kubernetes CronJobs as it includes an additional seconds specifier, see https://pkg.go.dev/github.com/robfig/cron#hdr-CRON_Expression_Format - mandatory

string

`cluster `

The cluster to backup

LocalObjectReference

backupOwnerReference

Indicates which ownerReference should be put inside the created backup resources.<br /> - none: no owner reference for created backup objects (same behavior as before the field was introduced)<br /> - self: sets the Scheduled backup object as owner of the backup<br /> - cluster: set the cluster as owner of the backup<br />

string

`target `

The policy to decide which instance should perform this backup. If empty, it defaults to cluster.spec.backup.target. Available options are empty string, primary and prefer-standby. primary to have backups run always on primary instances, prefer-standby to have backups run preferably on the most updated standby, if available.

BackupTarget

ScheduledBackupStatus

ScheduledBackupStatus defines the observed state of ScheduledBackup

Name

Description

Type

`lastCheckTime `

The latest time the schedule

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lastScheduleTime

Information when was the last time that backup was successfully scheduled.

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nextScheduleTime

Next time we will run a backup

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SecretKeySelector

SecretKeySelector contains enough information to let you locate the key of a Secret

Name

Description

Type

key

The key to select - mandatory

string

SecretVersion

SecretVersion contains a secret name and its ResourceVersion

Name

Description

Type

`name `

The name of the secret

string

version

The ResourceVersion of the secret

string

SecretsResourceVersion

SecretsResourceVersion is the resource versions of the secrets managed by the operator

Name

Description

Type

`superuserSecretVersion `

The resource version of the “postgres” user secret

string

replicationSecretVersion

The resource version of the “streaming_replica” user secret

string

applicationSecretVersion

The resource version of the “app” user secret

string

managedRoleSecretVersion

The resource versions of the managed roles secrets

map[string]string

`caSecretVersion `

Unused. Retained for compatibility with old versions.

string

`clientCaSecretVersion `

The resource version of the PostgreSQL client-side CA secret version

string

`serverCaSecretVersion `

The resource version of the PostgreSQL server-side CA secret version

string

`serverSecretVersion `

The resource version of the PostgreSQL server-side secret version

string

`barmanEndpointCA `

The resource version of the Barman Endpoint CA if provided

string

`metrics `

A map with the versions of all the secrets used to pass metrics. Map keys are the secret names, map values are the versions

map[string]string

ServiceAccountTemplate

ServiceAccountTemplate contains the template needed to generate the service accounts

Name

Description

Type

metadata

Metadata are the metadata to be used for the generated service account - mandatory

EmbeddedObjectMetadata

StorageConfiguration

StorageConfiguration is the configuration of the storage of the PostgreSQL instances

Name

Description

Type

`storageClass `

StorageClass to use for database data (PGDATA). Applied after evaluating the PVC template, if available. If not specified, generated PVCs will be satisfied by the default storage class

*string

`size `

Size of the storage. Required if not already specified in the PVC template. Changes to this field are automatically reapplied to the created PVCs. Size cannot be decreased.

string

resizeInUseVolumes

Resize existent PVCs, defaults to true

*bool

`pvcTemplate `

Template to be used to generate the Persistent Volume Claim

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SyncReplicaElectionConstraints

SyncReplicaElectionConstraints contains the constraints for sync replicas election.

For anti-affinity parameters two instances are considered in the same location if all the labels values match.

In future synchronous replica election restriction by name will be supported.

Name

Description

Type

`enabled `

This flag enables the constraints for sync replicas - mandatory

bool

nodeLabelsAntiAffinity

A list of node labels values to extract and compare to evaluate if the pods reside in the same topology or not

[]string

Topology

Topology contains the cluster topology

Name

Description

Type

successfullyExtracted

SuccessfullyExtracted indicates if the topology data was extract. It is useful to enact fallback behaviors in synchronous replica election in case of failures

bool

`instances `

Instances contains the pod topology of the instances

map[PodName]PodTopologyLabels

`nodesUsed `

NodesUsed represents the count of distinct nodes accommodating the instances. A value of ‘1’ suggests that all instances are hosted on a single node, implying the absence of High Availability (HA). Ideally, this value should be the same as the number of instances in the Postgres HA cluster, implying shared nothing architecture on the compute side.

int32

WalBackupConfiguration

WalBackupConfiguration is the configuration of the backup of the WAL stream

Name

Description

Type

compression

Compress a WAL file before sending it to the object store. Available options are empty string (no compression, default), gzip, bzip2 or snappy.

CompressionType

`encryption `

Whenever to force the encryption of files (if the bucket is not already configured for that). Allowed options are empty string (use the bucket policy, default), AES256 and aws:kms

EncryptionType

maxParallel

Number of WAL files to be either archived in parallel (when the PostgreSQL instance is archiving to a backup object store) or restored in parallel (when a PostgreSQL standby is fetching WAL files from a recovery object store). If not specified, WAL files will be processed one at a time. It accepts a positive integer as a value - with 1 being the minimum accepted value.

int