netflux-kubernetes/deploy/dev/charts/postgresql

PostgreSQL packaged by Bitnami

PostgreSQL (Postgres) is an open source object-relational database known for reliability and data integrity. ACID-compliant, it supports foreign keys, joins, views, triggers and stored procedures.

Overview of PostgreSQL

Trademarks: This software listing is packaged by Bitnami. The respective trademarks mentioned in the offering are owned by the respective companies, and use of them does not imply any affiliation or endorsement.

TL;DR

helm repo add bitnami https://charts.bitnami.com/bitnami
helm install my-release bitnami/postgresql

Introduction

This chart bootstraps a PostgreSQL deployment on a Kubernetes cluster using the Helm package manager.

For HA, please see this repo

Bitnami charts can be used with Kubeapps for deployment and management of Helm Charts in clusters. This chart has been tested to work with NGINX Ingress, cert-manager, fluentd and Prometheus on top of the BKPR.

Prerequisites

• Kubernetes 1.19+
• Helm 3.2.0+
• PV provisioner support in the underlying infrastructure

Installing the Chart

To install the chart with the release name my-release:

helm install my-release bitnami/postgresql

The command deploys PostgreSQL on the Kubernetes cluster in the default configuration. The Parameters section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Uninstalling the Chart

To uninstall/delete the my-release deployment:

helm delete my-release

The command removes all the Kubernetes components but PVC's associated with the chart and deletes the release.

To delete the PVC's associated with my-release:

kubectl delete pvc -l release=my-release

Note: Deleting the PVC's will delete postgresql data as well. Please be cautious before doing it.

Parameters

Global parameters

Name	Description	Value
global.imageRegistry	Global Docker image registry	""
global.imagePullSecrets	Global Docker registry secret names as an array	[]
global.storageClass	Global StorageClass for Persistent Volume(s)	""
global.postgresql.auth.postgresPassword	Password for the "postgres" admin user (overrides auth.postgresPassword)	""
global.postgresql.auth.username	Name for a custom user to create (overrides auth.username)	""
global.postgresql.auth.password	Password for the custom user to create (overrides auth.password)	""
global.postgresql.auth.database	Name for a custom database to create (overrides auth.database)	""
global.postgresql.auth.existingSecret	Name of existing secret to use for PostgreSQL credentials (overrides auth.existingSecret)	""
global.postgresql.service.ports.postgresql	PostgreSQL service port (overrides service.ports.postgresql)	""

Common parameters

Name	Description	Value
kubeVersion	Override Kubernetes version	""
nameOverride	String to partially override common.names.fullname template (will maintain the release name)	""
fullnameOverride	String to fully override common.names.fullname template	""
clusterDomain	Kubernetes Cluster Domain	cluster.local
extraDeploy	Array of extra objects to deploy with the release (evaluated as a template)	[]
commonLabels	Add labels to all the deployed resources	{}
commonAnnotations	Add annotations to all the deployed resources	{}
diagnosticMode.enabled	Enable diagnostic mode (all probes will be disabled and the command will be overridden)	false
diagnosticMode.command	Command to override all containers in the statefulset	["sleep"]
diagnosticMode.args	Args to override all containers in the statefulset	["infinity"]

PostgreSQL common parameters

Name	Description	Value
image.registry	PostgreSQL image registry	docker.io
image.repository	PostgreSQL image repository	bitnami/postgresql
image.tag	PostgreSQL image tag (immutable tags are recommended)	14.2.0-debian-10-r58
image.pullPolicy	PostgreSQL image pull policy	IfNotPresent
image.pullSecrets	Specify image pull secrets	[]
image.debug	Specify if debug values should be set	false
auth.enablePostgresUser	Assign a password to the "postgres" admin user. Otherwise, remote access will be blocked for this user	true
auth.postgresPassword	Password for the "postgres" admin user. Ignored if auth.existingSecret with key postgres-password is provided	""
auth.username	Name for a custom user to create	""
auth.password	Password for the custom user to create. Ignored if auth.existingSecret with key password is provided	""
auth.database	Name for a custom database to create	""
auth.replicationUsername	Name of the replication user	repl_user
auth.replicationPassword	Password for the replication user. Ignored if auth.existingSecret with key replication-password is provided	""
auth.existingSecret	Name of existing secret to use for PostgreSQL credentials. The secret must contain the keys postgres-password (which is the password for "postgres" admin user), password (which is the password for the custom user to create when auth.username is set) and replication-password (which is the password for replication user). auth.postgresPassword, auth.password, and auth.replicationPassword will be ignored and picked up from this secret. The secret might also contains the key ldap-password if LDAP is enabled. ldap.bind_password will be ignored and picked from this secret in this case.	""
auth.usePasswordFiles	Mount credentials as a files instead of using an environment variable	false
architecture	PostgreSQL architecture (standalone or replication)	standalone
replication.synchronousCommit	Set synchronous commit mode. Allowed values: on, remote_apply, remote_write, local and off	off
replication.numSynchronousReplicas	Number of replicas that will have synchronous replication. Note: Cannot be greater than readReplicas.replicaCount.	0
replication.applicationName	Cluster application name. Useful for advanced replication settings	my_application
containerPorts.postgresql	PostgreSQL container port	5432
audit.logHostname	Log client hostnames	false
audit.logConnections	Add client log-in operations to the log file	false
audit.logDisconnections	Add client log-outs operations to the log file	false
audit.pgAuditLog	Add operations to log using the pgAudit extension	""
audit.pgAuditLogCatalog	Log catalog using pgAudit	off
audit.clientMinMessages	Message log level to share with the user	error
audit.logLinePrefix	Template for log line prefix (default if not set)	""
audit.logTimezone	Timezone for the log timestamps	""
ldap.enabled	Enable LDAP support	false
ldap.url	LDAP URL beginning in the form ldap[s]://host[:port]/basedn	""
ldap.server	IP address or name of the LDAP server.	""
ldap.port	Port number on the LDAP server to connect to	""
ldap.prefix	String to prepend to the user name when forming the DN to bind	""
ldap.suffix	String to append to the user name when forming the DN to bind	""
ldap.baseDN	Root DN to begin the search for the user in	""
ldap.bindDN	DN of user to bind to LDAP	""
ldap.bind_password	Password for the user to bind to LDAP	""
ldap.search_attr	Attribute to match against the user name in the search	""
ldap.search_filter	The search filter to use when doing search+bind authentication	""
ldap.scheme	Set to ldaps to use LDAPS	""
ldap.tls	Set to 1 to use TLS encryption	""
postgresqlDataDir	PostgreSQL data dir folder	/bitnami/postgresql/data
postgresqlSharedPreloadLibraries	Shared preload libraries (comma-separated list)	pgaudit
shmVolume.enabled	Enable emptyDir volume for /dev/shm for PostgreSQL pod(s)	true
shmVolume.sizeLimit	Set this to enable a size limit on the shm tmpfs	""
tls.enabled	Enable TLS traffic support	false
tls.autoGenerated	Generate automatically self-signed TLS certificates	false
tls.preferServerCiphers	Whether to use the server's TLS cipher preferences rather than the client's	true
tls.certificatesSecret	Name of an existing secret that contains the certificates	""
tls.certFilename	Certificate filename	""
tls.certKeyFilename	Certificate key filename	""
tls.certCAFilename	CA Certificate filename	""
tls.crlFilename	File containing a Certificate Revocation List	""

PostgreSQL Primary parameters

Name	Description	Value
primary.configuration	PostgreSQL Primary main configuration to be injected as ConfigMap	""
primary.pgHbaConfiguration	PostgreSQL Primary client authentication configuration	""
primary.existingConfigmap	Name of an existing ConfigMap with PostgreSQL Primary configuration	""
primary.extendedConfiguration	Extended PostgreSQL Primary configuration (appended to main or default configuration)	""
primary.existingExtendedConfigmap	Name of an existing ConfigMap with PostgreSQL Primary extended configuration	""
primary.initdb.args	PostgreSQL initdb extra arguments	""
primary.initdb.postgresqlWalDir	Specify a custom location for the PostgreSQL transaction log	""
primary.initdb.scripts	Dictionary of initdb scripts	{}
primary.initdb.scriptsConfigMap	ConfigMap with scripts to be run at first boot	""
primary.initdb.scriptsSecret	Secret with scripts to be run at first boot (in case it contains sensitive information)	""
primary.initdb.user	Specify the PostgreSQL username to execute the initdb scripts	""
primary.initdb.password	Specify the PostgreSQL password to execute the initdb scripts	""
primary.standby.enabled	Whether to enable current cluster's primary as standby server of another cluster or not	false
primary.standby.primaryHost	The Host of replication primary in the other cluster	""
primary.standby.primaryPort	The Port of replication primary in the other cluster	""
primary.extraEnvVars	Array with extra environment variables to add to PostgreSQL Primary nodes	[]
primary.extraEnvVarsCM	Name of existing ConfigMap containing extra env vars for PostgreSQL Primary nodes	""
primary.extraEnvVarsSecret	Name of existing Secret containing extra env vars for PostgreSQL Primary nodes	""
primary.command	Override default container command (useful when using custom images)	[]
primary.args	Override default container args (useful when using custom images)	[]
primary.livenessProbe.enabled	Enable livenessProbe on PostgreSQL Primary containers	true
primary.livenessProbe.initialDelaySeconds	Initial delay seconds for livenessProbe	30
primary.livenessProbe.periodSeconds	Period seconds for livenessProbe	10
primary.livenessProbe.timeoutSeconds	Timeout seconds for livenessProbe	5
primary.livenessProbe.failureThreshold	Failure threshold for livenessProbe	6
primary.livenessProbe.successThreshold	Success threshold for livenessProbe	1
primary.readinessProbe.enabled	Enable readinessProbe on PostgreSQL Primary containers	true
primary.readinessProbe.initialDelaySeconds	Initial delay seconds for readinessProbe	5
primary.readinessProbe.periodSeconds	Period seconds for readinessProbe	10
primary.readinessProbe.timeoutSeconds	Timeout seconds for readinessProbe	5
primary.readinessProbe.failureThreshold	Failure threshold for readinessProbe	6
primary.readinessProbe.successThreshold	Success threshold for readinessProbe	1
primary.startupProbe.enabled	Enable startupProbe on PostgreSQL Primary containers	false
primary.startupProbe.initialDelaySeconds	Initial delay seconds for startupProbe	30
primary.startupProbe.periodSeconds	Period seconds for startupProbe	10
primary.startupProbe.timeoutSeconds	Timeout seconds for startupProbe	1
primary.startupProbe.failureThreshold	Failure threshold for startupProbe	15
primary.startupProbe.successThreshold	Success threshold for startupProbe	1
primary.customLivenessProbe	Custom livenessProbe that overrides the default one	{}
primary.customReadinessProbe	Custom readinessProbe that overrides the default one	{}
primary.customStartupProbe	Custom startupProbe that overrides the default one	{}
primary.lifecycleHooks	for the PostgreSQL Primary container to automate configuration before or after startup	{}
primary.resources.limits	The resources limits for the PostgreSQL Primary containers	{}
primary.resources.requests.memory	The requested memory for the PostgreSQL Primary containers	256Mi
primary.resources.requests.cpu	The requested cpu for the PostgreSQL Primary containers	250m
primary.podSecurityContext.enabled	Enable security context	true
primary.podSecurityContext.fsGroup	Group ID for the pod	1001
primary.containerSecurityContext.enabled	Enable container security context	true
primary.containerSecurityContext.runAsUser	User ID for the container	1001
primary.hostAliases	PostgreSQL primary pods host aliases	[]
primary.hostNetwork	Specify if host network should be enabled for PostgreSQL pod (postgresql primary)	false
primary.hostIPC	Specify if host IPC should be enabled for PostgreSQL pod (postgresql primary)	false
primary.labels	Map of labels to add to the statefulset (postgresql primary)	{}
primary.annotations	Annotations for PostgreSQL primary pods	{}
primary.podLabels	Map of labels to add to the pods (postgresql primary)	{}
primary.podAnnotations	Map of annotations to add to the pods (postgresql primary)	{}
primary.podAffinityPreset	PostgreSQL primary pod affinity preset. Ignored if primary.affinity is set. Allowed values: soft or hard	""
primary.podAntiAffinityPreset	PostgreSQL primary pod anti-affinity preset. Ignored if primary.affinity is set. Allowed values: soft or hard	soft
primary.nodeAffinityPreset.type	PostgreSQL primary node affinity preset type. Ignored if primary.affinity is set. Allowed values: soft or hard	""
primary.nodeAffinityPreset.key	PostgreSQL primary node label key to match Ignored if primary.affinity is set.	""
primary.nodeAffinityPreset.values	PostgreSQL primary node label values to match. Ignored if primary.affinity is set.	[]
primary.affinity	Affinity for PostgreSQL primary pods assignment	{}
primary.nodeSelector	Node labels for PostgreSQL primary pods assignment	{}
primary.tolerations	Tolerations for PostgreSQL primary pods assignment	[]
primary.topologySpreadConstraints	Topology Spread Constraints for pod assignment spread across your cluster among failure-domains. Evaluated as a template	{}
primary.priorityClassName	Priority Class to use for each pod (postgresql primary)	""
primary.schedulerName	Use an alternate scheduler, e.g. "stork".	""
primary.terminationGracePeriodSeconds	Seconds PostgreSQL primary pod needs to terminate gracefully	""
primary.updateStrategy.type	PostgreSQL Primary statefulset strategy type	RollingUpdate
primary.updateStrategy.rollingUpdate	PostgreSQL Primary statefulset rolling update configuration parameters	{}
primary.extraVolumeMounts	Optionally specify extra list of additional volumeMounts for the PostgreSQL Primary container(s)	[]
primary.extraVolumes	Optionally specify extra list of additional volumes for the PostgreSQL Primary pod(s)	[]
primary.sidecars	Add additional sidecar containers to the PostgreSQL Primary pod(s)	[]
primary.initContainers	Add additional init containers to the PostgreSQL Primary pod(s)	[]
primary.extraPodSpec	Optionally specify extra PodSpec for the PostgreSQL Primary pod(s)	{}
primary.service.type	Kubernetes Service type	ClusterIP
primary.service.ports.postgresql	PostgreSQL service port	5432
primary.service.nodePorts.postgresql	Node port for PostgreSQL	""
primary.service.clusterIP	Static clusterIP or None for headless services	""
primary.service.annotations	Annotations for PostgreSQL primary service	{}
primary.service.loadBalancerIP	Load balancer IP if service type is LoadBalancer	""
primary.service.externalTrafficPolicy	Enable client source IP preservation	Cluster
primary.service.loadBalancerSourceRanges	Addresses that are allowed when service is LoadBalancer	[]
primary.service.extraPorts	Extra ports to expose in the PostgreSQL primary service	[]
primary.persistence.enabled	Enable PostgreSQL Primary data persistence using PVC	true
primary.persistence.existingClaim	Name of an existing PVC to use	""
primary.persistence.mountPath	The path the volume will be mounted at	/bitnami/postgresql
primary.persistence.subPath	The subdirectory of the volume to mount to	""
primary.persistence.storageClass	PVC Storage Class for PostgreSQL Primary data volume	""
primary.persistence.accessModes	PVC Access Mode for PostgreSQL volume	["ReadWriteOnce"]
primary.persistence.size	PVC Storage Request for PostgreSQL volume	8Gi
primary.persistence.annotations	Annotations for the PVC	{}
primary.persistence.selector	Selector to match an existing Persistent Volume (this value is evaluated as a template)	{}
primary.persistence.dataSource	Custom PVC data source	{}

PostgreSQL read only replica parameters

Name	Description	Value
readReplicas.replicaCount	Number of PostgreSQL read only replicas	1
readReplicas.extraEnvVars	Array with extra environment variables to add to PostgreSQL read only nodes	[]
readReplicas.extraEnvVarsCM	Name of existing ConfigMap containing extra env vars for PostgreSQL read only nodes	""
readReplicas.extraEnvVarsSecret	Name of existing Secret containing extra env vars for PostgreSQL read only nodes	""
readReplicas.command	Override default container command (useful when using custom images)	[]
readReplicas.args	Override default container args (useful when using custom images)	[]
readReplicas.livenessProbe.enabled	Enable livenessProbe on PostgreSQL read only containers	true
readReplicas.livenessProbe.initialDelaySeconds	Initial delay seconds for livenessProbe	30
readReplicas.livenessProbe.periodSeconds	Period seconds for livenessProbe	10
readReplicas.livenessProbe.timeoutSeconds	Timeout seconds for livenessProbe	5
readReplicas.livenessProbe.failureThreshold	Failure threshold for livenessProbe	6
readReplicas.livenessProbe.successThreshold	Success threshold for livenessProbe	1
readReplicas.readinessProbe.enabled	Enable readinessProbe on PostgreSQL read only containers	true
readReplicas.readinessProbe.initialDelaySeconds	Initial delay seconds for readinessProbe	5
readReplicas.readinessProbe.periodSeconds	Period seconds for readinessProbe	10
readReplicas.readinessProbe.timeoutSeconds	Timeout seconds for readinessProbe	5
readReplicas.readinessProbe.failureThreshold	Failure threshold for readinessProbe	6
readReplicas.readinessProbe.successThreshold	Success threshold for readinessProbe	1
readReplicas.startupProbe.enabled	Enable startupProbe on PostgreSQL read only containers	false
readReplicas.startupProbe.initialDelaySeconds	Initial delay seconds for startupProbe	30
readReplicas.startupProbe.periodSeconds	Period seconds for startupProbe	10
readReplicas.startupProbe.timeoutSeconds	Timeout seconds for startupProbe	1
readReplicas.startupProbe.failureThreshold	Failure threshold for startupProbe	15
readReplicas.startupProbe.successThreshold	Success threshold for startupProbe	1
readReplicas.customLivenessProbe	Custom livenessProbe that overrides the default one	{}
readReplicas.customReadinessProbe	Custom readinessProbe that overrides the default one	{}
readReplicas.customStartupProbe	Custom startupProbe that overrides the default one	{}
readReplicas.lifecycleHooks	for the PostgreSQL read only container to automate configuration before or after startup	{}
readReplicas.resources.limits	The resources limits for the PostgreSQL read only containers	{}
readReplicas.resources.requests.memory	The requested memory for the PostgreSQL read only containers	256Mi
readReplicas.resources.requests.cpu	The requested cpu for the PostgreSQL read only containers	250m
readReplicas.podSecurityContext.enabled	Enable security context	true
readReplicas.podSecurityContext.fsGroup	Group ID for the pod	1001
readReplicas.containerSecurityContext.enabled	Enable container security context	true
readReplicas.containerSecurityContext.runAsUser	User ID for the container	1001
readReplicas.hostAliases	PostgreSQL read only pods host aliases	[]
readReplicas.hostNetwork	Specify if host network should be enabled for PostgreSQL pod (PostgreSQL read only)	false
readReplicas.hostIPC	Specify if host IPC should be enabled for PostgreSQL pod (postgresql primary)	false
readReplicas.labels	Map of labels to add to the statefulset (PostgreSQL read only)	{}
readReplicas.annotations	Annotations for PostgreSQL read only pods	{}
readReplicas.podLabels	Map of labels to add to the pods (PostgreSQL read only)	{}
readReplicas.podAnnotations	Map of annotations to add to the pods (PostgreSQL read only)	{}
readReplicas.podAffinityPreset	PostgreSQL read only pod affinity preset. Ignored if primary.affinity is set. Allowed values: soft or hard	""
readReplicas.podAntiAffinityPreset	PostgreSQL read only pod anti-affinity preset. Ignored if primary.affinity is set. Allowed values: soft or hard	soft
readReplicas.nodeAffinityPreset.type	PostgreSQL read only node affinity preset type. Ignored if primary.affinity is set. Allowed values: soft or hard	""
readReplicas.nodeAffinityPreset.key	PostgreSQL read only node label key to match Ignored if primary.affinity is set.	""
readReplicas.nodeAffinityPreset.values	PostgreSQL read only node label values to match. Ignored if primary.affinity is set.	[]
readReplicas.affinity	Affinity for PostgreSQL read only pods assignment	{}
readReplicas.nodeSelector	Node labels for PostgreSQL read only pods assignment	{}
readReplicas.tolerations	Tolerations for PostgreSQL read only pods assignment	[]
readReplicas.topologySpreadConstraints	Topology Spread Constraints for pod assignment spread across your cluster among failure-domains. Evaluated as a template	{}
readReplicas.priorityClassName	Priority Class to use for each pod (PostgreSQL read only)	""
readReplicas.schedulerName	Use an alternate scheduler, e.g. "stork".	""
readReplicas.terminationGracePeriodSeconds	Seconds PostgreSQL read only pod needs to terminate gracefully	""
readReplicas.updateStrategy.type	PostgreSQL read only statefulset strategy type	RollingUpdate
readReplicas.updateStrategy.rollingUpdate	PostgreSQL read only statefulset rolling update configuration parameters	{}
readReplicas.extraVolumeMounts	Optionally specify extra list of additional volumeMounts for the PostgreSQL read only container(s)	[]
readReplicas.extraVolumes	Optionally specify extra list of additional volumes for the PostgreSQL read only pod(s)	[]
readReplicas.sidecars	Add additional sidecar containers to the PostgreSQL read only pod(s)	[]
readReplicas.initContainers	Add additional init containers to the PostgreSQL read only pod(s)	[]
readReplicas.extraPodSpec	Optionally specify extra PodSpec for the PostgreSQL read only pod(s)	{}
readReplicas.service.type	Kubernetes Service type	ClusterIP
readReplicas.service.ports.postgresql	PostgreSQL service port	5432
readReplicas.service.nodePorts.postgresql	Node port for PostgreSQL	""
readReplicas.service.clusterIP	Static clusterIP or None for headless services	""
readReplicas.service.annotations	Annotations for PostgreSQL read only service	{}
readReplicas.service.loadBalancerIP	Load balancer IP if service type is LoadBalancer	""
readReplicas.service.externalTrafficPolicy	Enable client source IP preservation	Cluster
readReplicas.service.loadBalancerSourceRanges	Addresses that are allowed when service is LoadBalancer	[]
readReplicas.service.extraPorts	Extra ports to expose in the PostgreSQL read only service	[]
readReplicas.persistence.enabled	Enable PostgreSQL read only data persistence using PVC	true
readReplicas.persistence.mountPath	The path the volume will be mounted at	/bitnami/postgresql
readReplicas.persistence.subPath	The subdirectory of the volume to mount to	""
readReplicas.persistence.storageClass	PVC Storage Class for PostgreSQL read only data volume	""
readReplicas.persistence.accessModes	PVC Access Mode for PostgreSQL volume	["ReadWriteOnce"]
readReplicas.persistence.size	PVC Storage Request for PostgreSQL volume	8Gi
readReplicas.persistence.annotations	Annotations for the PVC	{}
readReplicas.persistence.selector	Selector to match an existing Persistent Volume (this value is evaluated as a template)	{}
readReplicas.persistence.dataSource	Custom PVC data source	{}

NetworkPolicy parameters

Name	Description	Value
networkPolicy.enabled	Enable network policies	false
networkPolicy.metrics.enabled	Enable network policies for metrics (prometheus)	false
networkPolicy.metrics.namespaceSelector	Monitoring namespace selector labels. These labels will be used to identify the prometheus' namespace.	{}
networkPolicy.metrics.podSelector	Monitoring pod selector labels. These labels will be used to identify the Prometheus pods.	{}
networkPolicy.ingressRules.primaryAccessOnlyFrom.enabled	Enable ingress rule that makes PostgreSQL primary node only accessible from a particular origin.	false
networkPolicy.ingressRules.primaryAccessOnlyFrom.namespaceSelector	Namespace selector label that is allowed to access the PostgreSQL primary node. This label will be used to identified the allowed namespace(s).	{}
networkPolicy.ingressRules.primaryAccessOnlyFrom.podSelector	Pods selector label that is allowed to access the PostgreSQL primary node. This label will be used to identified the allowed pod(s).	{}
networkPolicy.ingressRules.primaryAccessOnlyFrom.customRules	Custom network policy for the PostgreSQL primary node.	{}
networkPolicy.ingressRules.readReplicasAccessOnlyFrom.enabled	Enable ingress rule that makes PostgreSQL read-only nodes only accessible from a particular origin.	false
networkPolicy.ingressRules.readReplicasAccessOnlyFrom.namespaceSelector	Namespace selector label that is allowed to access the PostgreSQL read-only nodes. This label will be used to identified the allowed namespace(s).	{}
networkPolicy.ingressRules.readReplicasAccessOnlyFrom.podSelector	Pods selector label that is allowed to access the PostgreSQL read-only nodes. This label will be used to identified the allowed pod(s).	{}
networkPolicy.ingressRules.readReplicasAccessOnlyFrom.customRules	Custom network policy for the PostgreSQL read-only nodes.	{}
networkPolicy.egressRules.denyConnectionsToExternal	Enable egress rule that denies outgoing traffic outside the cluster, except for DNS (port 53).	false
networkPolicy.egressRules.customRules	Custom network policy rule	{}

Volume Permissions parameters

Name	Description	Value
volumePermissions.enabled	Enable init container that changes the owner and group of the persistent volume	false
volumePermissions.image.registry	Init container volume-permissions image registry	docker.io
volumePermissions.image.repository	Init container volume-permissions image repository	bitnami/bitnami-shell
volumePermissions.image.tag	Init container volume-permissions image tag (immutable tags are recommended)	10-debian-10-r388
volumePermissions.image.pullPolicy	Init container volume-permissions image pull policy	IfNotPresent
volumePermissions.image.pullSecrets	Init container volume-permissions image pull secrets	[]
volumePermissions.resources.limits	Init container volume-permissions resource limits	{}
volumePermissions.resources.requests	Init container volume-permissions resource requests	{}
volumePermissions.containerSecurityContext.runAsUser	User ID for the init container	0

Other Parameters

Name	Description	Value
serviceAccount.create	Enable creation of ServiceAccount for PostgreSQL pod	false
serviceAccount.name	The name of the ServiceAccount to use.	""
serviceAccount.automountServiceAccountToken	Allows auto mount of ServiceAccountToken on the serviceAccount created	true
serviceAccount.annotations	Additional custom annotations for the ServiceAccount	{}
rbac.create	Create Role and RoleBinding (required for PSP to work)	false
rbac.rules	Custom RBAC rules to set	[]
psp.create	Whether to create a PodSecurityPolicy. WARNING: PodSecurityPolicy is deprecated in Kubernetes v1.21 or later, unavailable in v1.25 or later	false

Metrics Parameters

Name	Description	Value
metrics.enabled	Start a prometheus exporter	false
metrics.image.registry	PostgreSQL Prometheus Exporter image registry	docker.io
metrics.image.repository	PostgreSQL Prometheus Exporter image repository	bitnami/postgres-exporter
metrics.image.tag	PostgreSQL Prometheus Exporter image tag (immutable tags are recommended)	0.10.1-debian-10-r76
metrics.image.pullPolicy	PostgreSQL Prometheus Exporter image pull policy	IfNotPresent
metrics.image.pullSecrets	Specify image pull secrets	[]
metrics.customMetrics	Define additional custom metrics	{}
metrics.extraEnvVars	Extra environment variables to add to PostgreSQL Prometheus exporter	[]
metrics.containerSecurityContext.enabled	Enable PostgreSQL Prometheus exporter containers' Security Context	true
metrics.containerSecurityContext.runAsUser	Set PostgreSQL Prometheus exporter containers' Security Context runAsUser	1001
metrics.containerSecurityContext.runAsNonRoot	Set PostgreSQL Prometheus exporter containers' Security Context runAsNonRoot	true
metrics.livenessProbe.enabled	Enable livenessProbe on PostgreSQL Prometheus exporter containers	true
metrics.livenessProbe.initialDelaySeconds	Initial delay seconds for livenessProbe	5
metrics.livenessProbe.periodSeconds	Period seconds for livenessProbe	10
metrics.livenessProbe.timeoutSeconds	Timeout seconds for livenessProbe	5
metrics.livenessProbe.failureThreshold	Failure threshold for livenessProbe	6
metrics.livenessProbe.successThreshold	Success threshold for livenessProbe	1
metrics.readinessProbe.enabled	Enable readinessProbe on PostgreSQL Prometheus exporter containers	true
metrics.readinessProbe.initialDelaySeconds	Initial delay seconds for readinessProbe	5
metrics.readinessProbe.periodSeconds	Period seconds for readinessProbe	10
metrics.readinessProbe.timeoutSeconds	Timeout seconds for readinessProbe	5
metrics.readinessProbe.failureThreshold	Failure threshold for readinessProbe	6
metrics.readinessProbe.successThreshold	Success threshold for readinessProbe	1
metrics.startupProbe.enabled	Enable startupProbe on PostgreSQL Prometheus exporter containers	false
metrics.startupProbe.initialDelaySeconds	Initial delay seconds for startupProbe	10
metrics.startupProbe.periodSeconds	Period seconds for startupProbe	10
metrics.startupProbe.timeoutSeconds	Timeout seconds for startupProbe	1
metrics.startupProbe.failureThreshold	Failure threshold for startupProbe	15
metrics.startupProbe.successThreshold	Success threshold for startupProbe	1
metrics.customLivenessProbe	Custom livenessProbe that overrides the default one	{}
metrics.customReadinessProbe	Custom readinessProbe that overrides the default one	{}
metrics.customStartupProbe	Custom startupProbe that overrides the default one	{}
metrics.containerPorts.metrics	PostgreSQL Prometheus exporter metrics container port	9187
metrics.resources.limits	The resources limits for the PostgreSQL Prometheus exporter container	{}
metrics.resources.requests	The requested resources for the PostgreSQL Prometheus exporter container	{}
metrics.service.ports.metrics	PostgreSQL Prometheus Exporter service port	9187
metrics.service.clusterIP	Static clusterIP or None for headless services	""
metrics.service.sessionAffinity	Control where client requests go, to the same pod or round-robin	None
metrics.service.annotations	Annotations for Prometheus to auto-discover the metrics endpoint	{}
metrics.serviceMonitor.enabled	Create ServiceMonitor Resource for scraping metrics using Prometheus Operator	false
metrics.serviceMonitor.namespace	Namespace for the ServiceMonitor Resource (defaults to the Release Namespace)	""
metrics.serviceMonitor.interval	Interval at which metrics should be scraped.	""
metrics.serviceMonitor.scrapeTimeout	Timeout after which the scrape is ended	""
metrics.serviceMonitor.labels	Additional labels that can be used so ServiceMonitor will be discovered by Prometheus	{}
metrics.serviceMonitor.selector	Prometheus instance selector labels	{}
metrics.serviceMonitor.relabelings	RelabelConfigs to apply to samples before scraping	[]
metrics.serviceMonitor.metricRelabelings	MetricRelabelConfigs to apply to samples before ingestion	[]
metrics.serviceMonitor.honorLabels	Specify honorLabels parameter to add the scrape endpoint	false
metrics.serviceMonitor.jobLabel	The name of the label on the target service to use as the job name in prometheus.	""
metrics.prometheusRule.enabled	Create a PrometheusRule for Prometheus Operator	false
metrics.prometheusRule.namespace	Namespace for the PrometheusRule Resource (defaults to the Release Namespace)	""
metrics.prometheusRule.labels	Additional labels that can be used so PrometheusRule will be discovered by Prometheus	{}
metrics.prometheusRule.rules	PrometheusRule definitions	[]

Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

$ helm install my-release \
    --set auth.postgresPassword=secretpassword
    bitnami/postgresql

The above command sets the PostgreSQL postgres account password to secretpassword.

NOTE: Once this chart is deployed, it is not possible to change the application's access credentials, such as usernames or passwords, using Helm. To change these application credentials after deployment, delete any persistent volumes (PVs) used by the chart and re-deploy it, or use the application's built-in administrative tools if available.

Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,

helm install my-release -f values.yaml bitnami/postgresql

Tip: You can use the default values.yaml

Configuration and installation details

Rolling VS Immutable tags

It is strongly recommended to use immutable tags in a production environment. This ensures your deployment does not change automatically if the same tag is updated with a different image.

Bitnami will release a new chart updating its containers if a new version of the main container, significant changes, or critical vulnerabilities exist.

Customizing primary and read replica services in a replicated configuration

At the top level, there is a service object which defines the services for both primary and readReplicas. For deeper customization, there are service objects for both the primary and read types individually. This allows you to override the values in the top level service object so that the primary and read can be of different service types and with different clusterIPs / nodePorts. Also in the case you want the primary and read to be of type nodePort, you will need to set the nodePorts to different values to prevent a collision. The values that are deeper in the primary.service or readReplicas.service objects will take precedence over the top level service object.

Use a different PostgreSQL version

To modify the application version used in this chart, specify a different version of the image using the image.tag parameter and/or a different repository using the image.repository parameter. Refer to the chart documentation for more information on these parameters and how to use them with images from a private registry.

postgresql.conf / pg_hba.conf files as configMap

This helm chart also supports to customize the PostgreSQL configuration file. You can add additional PostgreSQL configuration parameters using the primary.extendedConfiguration parameter as a string. Alternatively, to replace the entire default configuration use primary.configuration.

You can also add a custom pg_hba.conf using the primary.pgHbaConfiguration parameter.

In addition to these options, you can also set an external ConfigMap with all the configuration files. This is done by setting the primary.existingConfigmap parameter. Note that this will override the two previous options.

Initialize a fresh instance

The Bitnami PostgreSQL image allows you to use your custom scripts to initialize a fresh instance. In order to execute the scripts, you can specify custom scripts using the primary.initdb.scripts parameter as a string.

In addition, you can also set an external ConfigMap with all the initialization scripts. This is done by setting the primary.initdb.scriptsConfigMap parameter. Note that this will override the two previous options. If your initialization scripts contain sensitive information such as credentials or passwords, you can use the primary.initdb.scriptsSecret parameter.

The allowed extensions are .sh, .sql and .sql.gz.

Securing traffic using TLS

TLS support can be enabled in the chart by specifying the tls. parameters while creating a release. The following parameters should be configured to properly enable the TLS support in the chart:

• tls.enabled: Enable TLS support. Defaults to false
• tls.certificatesSecret: Name of an existing secret that contains the certificates. No defaults.
• tls.certFilename: Certificate filename. No defaults.
• tls.certKeyFilename: Certificate key filename. No defaults.

For example:

• First, create the secret with the cetificates files:

  kubectl create secret generic certificates-tls-secret --from-file=./cert.crt --from-file=./cert.key --from-file=./ca.crt
  

• Then, use the following parameters:

  volumePermissions.enabled=true
  tls.enabled=true
  tls.certificatesSecret="certificates-tls-secret"
  tls.certFilename="cert.crt"
  tls.certKeyFilename="cert.key"
  

  Note TLS and VolumePermissions: PostgreSQL requires certain permissions on sensitive files (such as certificate keys) to start up. Due to an on-going issue regarding kubernetes permissions and the use of containerSecurityContext.runAsUser, you must enable volumePermissions to ensure everything works as expected.

Sidecars

If you need additional containers to run within the same pod as PostgreSQL (e.g. an additional metrics or logging exporter), you can do so via the sidecars config parameter. Simply define your container according to the Kubernetes container spec.

# For the PostgreSQL primary
primary:
  sidecars:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
    - name: portname
     containerPort: 1234
# For the PostgreSQL replicas
readReplicas:
  sidecars:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
    - name: portname
     containerPort: 1234

Metrics

The chart optionally can start a metrics exporter for prometheus. The metrics endpoint (port 9187) is not exposed and it is expected that the metrics are collected from inside the k8s cluster using something similar as the described in the example Prometheus scrape configuration.

The exporter allows to create custom metrics from additional SQL queries. See the Chart's values.yaml for an example and consult the exporters documentation for more details.

Use of global variables

In more complex scenarios, we may have the following tree of dependencies

                     +--------------+
                     |              |
        +------------+   Chart 1    +-----------+
        |            |              |           |
        |            --------+------+           |
        |                    |                  |
        |                    |                  |
        |                    |                  |
        |                    |                  |
        v                    v                  v
+-------+------+    +--------+------+  +--------+------+
|              |    |               |  |               |
|  PostgreSQL  |    |  Sub-chart 1  |  |  Sub-chart 2  |
|              |    |               |  |               |
+--------------+    +---------------+  +---------------+

The three charts below depend on the parent chart Chart 1. However, subcharts 1 and 2 may need to connect to PostgreSQL as well. In order to do so, subcharts 1 and 2 need to know the PostgreSQL credentials, so one option for deploying could be deploy Chart 1 with the following parameters:

postgresql.auth.password=testuser
subchart1.postgresql.auth.username=testuser
subchart2.postgresql.auth.username=testuser
postgresql.auth.password=testpass
subchart1.postgresql.auth.password=testpass
subchart2.postgresql.auth.password=testpass
postgresql.auth.database=testdb
subchart1.postgresql.auth.database=testdb
subchart2.postgresql.auth.database=testdb

If the number of dependent sub-charts increases, installing the chart with parameters can become increasingly difficult. An alternative would be to set the credentials using global variables as follows:

global.postgresql.auth.username=testuser
global.postgresql.auth.password=testpass
global.postgresql.auth.database=testdb

This way, the credentials will be available in all of the subcharts.

Persistence

The Bitnami PostgreSQL image stores the PostgreSQL data and configurations at the /bitnami/postgresql path of the container.

Persistent Volume Claims are used to keep the data across deployments. This is known to work in GCE, AWS, and minikube. See the Parameters section to configure the PVC or to disable persistence.

If you already have data in it, you will fail to sync to standby nodes for all commits, details can refer to code. If you need to use those data, please covert them to sql and import after helm install finished.

NetworkPolicy

To enable network policy for PostgreSQL, install a networking plugin that implements the Kubernetes NetworkPolicy spec, and set networkPolicy.enabled to true.

For Kubernetes v1.5 & v1.6, you must also turn on NetworkPolicy by setting the DefaultDeny namespace annotation. Note: this will enforce policy for all pods in the namespace:

kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}"

With NetworkPolicy enabled, traffic will be limited to just port 5432.

For more precise policy, set networkPolicy.allowExternal=false. This will only allow pods with the generated client label to connect to PostgreSQL. This label will be displayed in the output of a successful install.

Differences between Bitnami PostgreSQL image and Docker Official image

• The Docker Official PostgreSQL image does not support replication. If you pass any replication environment variable, this would be ignored. The only environment variables supported by the Docker Official image are POSTGRES_USER, POSTGRES_DB, POSTGRES_PASSWORD, POSTGRES_INITDB_ARGS, POSTGRES_INITDB_WALDIR and PGDATA. All the remaining environment variables are specific to the Bitnami PostgreSQL image.
• The Bitnami PostgreSQL image is non-root by default. This requires that you run the pod with securityContext and updates the permissions of the volume with an initContainer. A key benefit of this configuration is that the pod follows security best practices and is prepared to run on Kubernetes distributions with hard security constraints like OpenShift.
• For OpenShift, one may either define the runAsUser and fsGroup accordingly, or try this more dynamic option: volumePermissions.securityContext.runAsUser="auto",securityContext.enabled=false,containerSecurityContext.enabled=false,shmVolume.chmod.enabled=false

Setting Pod's affinity

This chart allows you to set your custom affinity using the XXX.affinity parameter(s). Find more information about Pod's affinity in the kubernetes documentation.

As an alternative, you can use of the preset configurations for pod affinity, pod anti-affinity, and node affinity available at the bitnami/common chart. To do so, set the XXX.podAffinityPreset, XXX.podAntiAffinityPreset, or XXX.nodeAffinityPreset parameters.

Troubleshooting

Find more information about how to deal with common errors related to Bitnami's Helm charts in this troubleshooting guide.

Upgrading

Refer to the chart documentation for more information about how to upgrade from previous releases.

License

Copyright © 2022 Bitnami

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.