Keycloak

Deploy Keycloak on Kubernetes for identity and access management, SSO, OAuth 2.0, OpenID Connect, and SAML. The chart supports explicit dev and production modes, Keycloak 26.7.0, bundled or external PostgreSQL/MySQL-compatible databases, optional Gateway API routes, External Secrets Operator integration, Prometheus metrics, S3-compatible database backup, and dual-stack Service fields.

Key Features

Explicit runtime mode — mode: dev for local testing and mode: production for hostname/database-backed deployments.
Keycloak 26.7.x alignment — image tag and app version use quay.io/keycloak/keycloak:26.7.0.
Database choices — embedded H2 for dev only, bundled PostgreSQL/MySQL subcharts, or external PostgreSQL/MySQL/MariaDB.
HA-ready controls — JDBC_PING cache stack, multi-replica scheduling defaults, PDB, rollout strategy, and capacity profiles.
Routing options — separate public/admin Ingress resources plus optional Gateway API HTTPRoute resources.
Security integration — non-root defaults, configurable ServiceAccount token mount, truststore controls, NetworkPolicy ingress and egress, and External Secrets Operator opt-in.
Observability — health probes, management service, metrics endpoint, ServiceMonitor, telemetry, tracing, and structured logging controls.
Backup — database-only PostgreSQL/MySQL dump CronJob uploaded to S3-compatible storage.

Architecture

Production

Public traffic reaches the Keycloak application service through Ingress or Gateway API. Health and metrics stay on the private management service.

High Availability

Multiple Keycloak pods share the same database, use JDBC_PING for cache discovery, and can expose optional backup and External Secrets flows.

Installation

HTTPS repository:

helm repo add helmforge https://repo.helmforge.dev
helm repo update
helm install keycloak helmforge/keycloak -f values.yaml

OCI registry:

helm install keycloak oci://ghcr.io/helmforgedev/helm/keycloak -f values.yaml

Production mode requires a hostname and a real database

mode: production fails fast unless hostname.hostname is set and one database path is configured through postgresql.enabled, mysql.enabled, or database.external.host.

Deployment Examples

# values.yaml - dev mode with embedded H2
mode: dev

admin:
  username: admin
  password: 'change-me'

Embedded H2 is not a production database

Dev mode is useful for local validation only. Use PostgreSQL, MySQL, MariaDB, or the PostgreSQL/MySQL subchart for production.

# values.yaml - production with external PostgreSQL
mode: production

hostname:
  hostname: https://sso.example.com

admin:
  existingSecret: keycloak-admin

database:
  external:
    vendor: postgres
    host: postgresql.database.svc.cluster.local
    port: 5432
    name: keycloak
    username: keycloak
    existingSecret: keycloak-db
    existingSecretPasswordKey: db-password
    pool:
      initialSize: 5
      minSize: 5
      maxSize: 30
    logSlowQueriesThreshold: 500ms

# values.yaml - HA with PostgreSQL subchart
mode: production
replicaCount: 3

hostname:
  hostname: https://sso.example.com

postgresql:
  enabled: true
  auth:
    database: keycloak
    username: keycloak
    password: 'strong-db-password'

cache:
  enabled: true
  stack: jdbc-ping

capacity:
  profile: medium

pdb:
  enabled: true
  minAvailable: 1

# values.yaml - public and admin ingress
mode: production

hostname:
  hostname: https://sso.example.com
  admin: https://admin-sso.example.com

database:
  external:
    host: postgresql.database.svc.cluster.local
    password: 'db-password'

proxy:
  headers: xforwarded
  trustedAddresses: 10.0.0.0/8,192.168.0.0/16

ingress:
  public:
    enabled: true
    ingressClassName: traefik
    hosts:
      - host: sso.example.com
        paths:
          - path: /
            pathType: Prefix
    tls:
      - secretName: keycloak-tls
        hosts:
          - sso.example.com
  admin:
    enabled: true
    ingressClassName: traefik
    hosts:
      - host: admin-sso.example.com
        paths:
          - path: /
            pathType: Prefix

# values.yaml - metrics, logs, backup, and network policy
mode: production

hostname:
  hostname: https://sso.example.com

postgresql:
  enabled: true
  auth:
    database: keycloak
    username: keycloak
    password: 'strong-db-password'

metrics:
  enabled: true
  userEvents: true
  serviceMonitor:
    enabled: true
    interval: 30s

logging:
  console:
    output: json
    jsonFormat: ecs
  access:
    enabled: true

backup:
  enabled: true
  schedule: '0 3 * * *'
  s3:
    endpoint: https://s3.example.com
    bucket: keycloak-backups
    existingSecret: keycloak-s3

networkPolicy:
  enabled: true
  egress:
    enabled: true
    databaseTo:
      - namespaceSelector:
          matchLabels:
            kubernetes.io/metadata.name: database

# values.yaml - Gateway API and External Secrets Operator
mode: production

hostname:
  hostname: https://sso.example.com

database:
  external:
    host: postgresql.database.svc.cluster.local
    existingSecret: keycloak-db

gateway:
  public:
    enabled: true
    parentRefs:
      - name: public-gateway
        namespace: gateway-system
    hostnames:
      - sso.example.com

externalSecrets:
  enabled: true
  secretStoreRef:
    name: platform-secrets
    kind: ClusterSecretStore
  admin:
    enabled: true
    usernameRemoteRef:
      key: keycloak/admin
      property: username
    passwordRemoteRef:
      key: keycloak/admin
      property: password
  database:
    enabled: true
    passwordRemoteRef:
      key: keycloak/database
      property: password

Configuration Reference

Core and Image

Parameter	Type	Default	Description
`mode`	string	`dev`	Runtime mode: `dev` or `production`.
`nameOverride`	string	`""`	Override chart name.
`fullnameOverride`	string	`""`	Override full release name.
`commonLabels`	object	`{}`	Labels added to all resources.
`clusterDomain`	string	`cluster.local`	Kubernetes cluster DNS domain.
`image.repository`	string	`quay.io/keycloak/keycloak`	Keycloak image repository.
`image.tag`	string	`"26.7.0"`	Keycloak image tag.
`image.pullPolicy`	string	`IfNotPresent`	Image pull policy.
`imagePullSecrets`	array	`[]`	Pull secrets for private registries.

Bootstrap Admin

Parameter	Type	Default	Description
`admin.username`	string	`admin`	Bootstrap admin username.
`admin.password`	string	`""`	Bootstrap admin password. Generated when empty and no existing secret is set.
`admin.existingSecret`	string	`""`	Existing Kubernetes Secret for bootstrap admin credentials.
`admin.existingSecretUsernameKey`	string	`admin-username`	Username key in the admin secret.
`admin.existingSecretPasswordKey`	string	`admin-password`	Password key in the admin secret.

HTTP, Management, Hostname, and Proxy

Parameter	Type	Default	Description
`http.enabled`	boolean	`true`	Keep HTTP enabled inside the cluster.
`http.port`	integer	`8080`	Application HTTP port.
`http.managementPort`	integer	`9000`	Management interface port for health and metrics.
`http.relativePath`	string	`/`	Application relative path, for example `/auth`.
`management.healthEnabled`	boolean	`true`	Serve health endpoints from the management interface.
`management.relativePath`	string	`""`	Optional management interface relative path.
`hostname.hostname`	string	`""`	Public Keycloak hostname or URL. Required in production.
`hostname.admin`	string	`""`	Dedicated admin hostname or URL.
`hostname.strict`	boolean	`true`	Enforce strict hostname handling.
`hostname.backchannelDynamic`	boolean	`false`	Enable dynamic backchannel URL resolution.
`proxy.headers`	string	`xforwarded`	Proxy header mode: `xforwarded`, `forwarded`, or empty.
`proxy.trustedAddresses`	string	`""`	Trusted proxy IPs/CIDRs for `KC_PROXY_TRUSTED_ADDRESSES`.
`proxy.protocolEnabled`	boolean	`false`	Enable HAProxy PROXY protocol. Cannot be combined with `proxy.headers`.

Database

Parameter	Type	Default	Description
`database.external.vendor`	string	`postgres`	External database vendor: `postgres`, `mysql`, or `mariadb`.
`database.external.host`	string	`""`	External database host.
`database.external.port`	string/integer	`""`	External database port. Auto-detected from vendor when empty.
`database.external.name`	string	`keycloak`	External database name.
`database.external.username`	string	`keycloak`	External database username.
`database.external.password`	string	`""`	External database password. Generated when empty and no existing secret is set.
`database.external.existingSecret`	string	`""`	Existing Secret containing database password.
`database.external.existingSecretPasswordKey`	string	`db-password`	Password key in the existing Secret.
`database.external.jdbcParameters`	string	`""`	Additional JDBC URL parameters.
`database.external.schema`	string	`""`	Optional database schema passed to `KC_DB_SCHEMA`.
`database.external.pool.initialSize`	string/integer	`""`	Initial DB connection pool size.
`database.external.pool.minSize`	string/integer	`""`	Minimum DB connection pool size.
`database.external.pool.maxSize`	string/integer	`""`	Maximum DB connection pool size.
`database.external.pool.maxLifetime`	string	`""`	Maximum DB connection lifetime.
`database.external.logSlowQueriesThreshold`	string	`""`	Slow query log threshold.
`database.external.transaction.xaEnabled`	string/boolean	`""`	Enable or disable XA transactions.
`database.external.transaction.timeout`	string	`""`	Transaction timeout.
`postgresql.enabled`	boolean	`false`	Enable the bundled PostgreSQL chart.
`postgresql.auth.database`	string	`keycloak`	PostgreSQL database name.
`postgresql.auth.username`	string	`keycloak`	PostgreSQL username.
`postgresql.auth.password`	string	`""`	PostgreSQL password. Required for deterministic subchart connections.
`mysql.enabled`	boolean	`false`	Enable the bundled MySQL chart.
`mysql.auth.database`	string	`keycloak`	MySQL database name.
`mysql.auth.username`	string	`keycloak`	MySQL username.
`mysql.auth.password`	string	`""`	MySQL password. Required for deterministic subchart connections.

Database TLS and Truststore

Parameter	Type	Default	Description
`database.tls.enabled`	boolean	`false`	Enable database TLS settings.
`database.tls.mode`	string	`""`	Keycloak database TLS mode.
`database.tls.sslMode`	string	`verify-full`	PostgreSQL SSL mode.
`database.tls.mountPath`	string	`/opt/keycloak/conf/db-certs`	Mount path for DB TLS material.
`database.tls.rootCertFilename`	string	`ca.crt`	Root CA filename.
`database.tls.existingSecret`	string	`""`	Secret holding DB CA material.
`database.tls.existingConfigMap`	string	`""`	ConfigMap holding DB CA material.
`database.tls.trustStoreFile`	string	`""`	DB TLS truststore file path.
`database.tls.trustStorePasswordSecret`	string	`""`	Secret containing DB TLS truststore password.
`database.tls.trustStorePasswordKey`	string	`password`	Password key for DB TLS truststore.
`database.tls.trustStoreType`	string	`""`	DB TLS truststore type.
`truststore.enabled`	boolean	`false`	Enable additional outbound TLS trust material.
`truststore.mountPath`	string	`/opt/keycloak/conf/truststores/custom`	Custom truststore mount path.
`truststore.existingSecret`	string	`""`	Secret with PEM or unencrypted PKCS12 trust material.
`truststore.existingConfigMap`	string	`""`	ConfigMap with PEM or unencrypted PKCS12 trust material.
`truststore.tlsHostnameVerifier`	string	`DEFAULT`	Outbound TLS hostname verifier mode.
`truststore.kubernetes.enabled`	boolean	`true`	Let Keycloak trust Kubernetes/OpenShift service account CA files when mounted.

Runtime, HA, and Capacity

Parameter	Type	Default	Description
`replicaCount`	integer	`1`	Number of Keycloak replicas.
`cache.enabled`	boolean	`true`	Enable distributed cache settings in production mode.
`cache.stack`	string	`jdbc-ping`	Cache stack used for multi-replica production deployments.
`cache.multiReplicaDefaults.enabled`	boolean	`true`	Apply scheduling defaults for multi-replica deployments.
`cache.multiReplicaDefaults.podAntiAffinity`	string	`preferred`	Automatic anti-affinity mode: `preferred`, `required`, or `none`.
`cache.multiReplicaDefaults.topologySpread.enabled`	boolean	`true`	Apply automatic topology spread for multi-replica deployments.
`features.enabled`	array	`[]`	Keycloak features rendered as `KC_FEATURES`.
`features.disabled`	array	`[]`	Keycloak features rendered as `KC_FEATURES_DISABLED`.
`optimized.enabled`	boolean	`false`	Add `--optimized`; use only with pre-built/custom optimized images in production.
`deployment.strategy.type`	string	`RollingUpdate`	Deployment strategy: `RollingUpdate` or `Recreate`.
`deployment.strategy.rollingUpdate.maxUnavailable`	string/integer	`0`	Maximum unavailable pods during rolling update.
`deployment.strategy.rollingUpdate.maxSurge`	string/integer	`1`	Maximum surge pods during rolling update.
`resources`	object	`{}`	Custom container resources when `capacity.profile=custom`.
`capacity.profile`	string	`custom`	Resource profile: `custom`, `small`, `medium`, or `large`.
`capacity.profiles`	object	built-in profiles	Profile definitions for `small`, `medium`, and `large`.

Realm Import, Providers, and Themes

Parameter	Type	Default	Description
`realmImport.enabled`	boolean	`false`	Enable startup realm import using `--import-realm`.
`realmImport.files`	object	`{}`	Inline realm JSON files written to a generated ConfigMap.
`realmImport.existingConfigMap`	string	`""`	Existing ConfigMap mounted into `/opt/keycloak/data/import`.
`extensions.providers.existingConfigMap`	string	`""`	ConfigMap mounted into `/opt/keycloak/providers`.
`extensions.providers.existingSecret`	string	`""`	Secret mounted into `/opt/keycloak/providers`.
`extensions.providers.rolloutToken`	string	`""`	Manual rollout token for provider changes.
`extensions.themes.existingConfigMap`	string	`""`	ConfigMap mounted into `/opt/keycloak/themes`.
`extensions.themes.existingSecret`	string	`""`	Secret mounted into `/opt/keycloak/themes`.
`extensions.themes.rolloutToken`	string	`""`	Manual rollout token for theme changes.

Services, Ingress, and Gateway API

Parameter	Type	Default	Description
`service.type`	string	`ClusterIP`	Application Service type.
`service.annotations`	object	`{}`	Application Service annotations.
`service.managementAnnotations`	object	`{}`	Management Service annotations.
`service.ipFamilyPolicy`	string	`""`	Application Service IP family policy.
`service.ipFamilies`	array	`[]`	Application Service IP families.
`service.managementIpFamilyPolicy`	string	`""`	Management Service IP family policy.
`service.managementIpFamilies`	array	`[]`	Management Service IP families.
`ingress.public.enabled`	boolean	`false`	Create public Ingress.
`ingress.public.ingressClassName`	string	`traefik`	Public Ingress class.
`ingress.public.hosts`	array	`[]`	Public host/path rules.
`ingress.public.tls`	array	`[]`	Public TLS configuration.
`ingress.admin.enabled`	boolean	`false`	Create admin Ingress.
`ingress.admin.ingressClassName`	string	`traefik`	Admin Ingress class.
`ingress.admin.hosts`	array	`[]`	Admin host/path rules.
`ingress.admin.tls`	array	`[]`	Admin TLS configuration.
`gateway.public.enabled`	boolean	`false`	Create public Gateway API `HTTPRoute`.
`gateway.public.parentRefs`	array	`[]`	Required parentRefs when public Gateway is enabled.
`gateway.public.hostnames`	array	`[]`	Public route hostnames.
`gateway.admin.enabled`	boolean	`false`	Create admin Gateway API `HTTPRoute`.
`gateway.admin.parentRefs`	array	`[]`	Required parentRefs when admin Gateway is enabled.
`gateway.admin.hostnames`	array	`[]`	Admin route hostnames.

Health, Metrics, Telemetry, and Logs

Parameter	Type	Default	Description
`health.enabled`	boolean	`true`	Enable Keycloak health endpoints.
`probes.profile`	string	`default`	Probe profile: `default` or `heavy-startup`.
`probes.liveness.enabled`	boolean	`true`	Enable liveness probe.
`probes.readiness.enabled`	boolean	`true`	Enable readiness probe.
`probes.startup.enabled`	boolean	`true`	Enable startup probe.
`metrics.enabled`	boolean	`false`	Enable Keycloak metrics endpoint.
`metrics.userEvents`	boolean	`false`	Enable user event metrics.
`metrics.cacheHistograms`	boolean	`false`	Enable cache metrics histograms.
`metrics.serviceMonitor.enabled`	boolean	`false`	Create a ServiceMonitor targeting the management service.
`metrics.serviceMonitor.interval`	string	`30s`	ServiceMonitor scrape interval.
`metrics.serviceMonitor.scrapeTimeout`	string	`""`	Optional scrape timeout.
`metrics.serviceMonitor.relabelings`	array	`[]`	Prometheus relabeling rules.
`metrics.serviceMonitor.metricRelabelings`	array	`[]`	Prometheus metric relabeling rules.
`telemetry.metricsEnabled`	boolean	`false`	Enable OpenTelemetry metrics export.
`telemetry.endpoint`	string	`""`	General OpenTelemetry endpoint.
`telemetry.metricsEndpoint`	string	`""`	Metrics-specific OpenTelemetry endpoint.
`tracing.enabled`	boolean	`false`	Enable OpenTelemetry tracing.
`tracing.endpoint`	string	`""`	Tracing endpoint.
`tracing.samplerType`	string	`""`	Tracing sampler type.
`tracing.samplerRatio`	string/number	`""`	Tracing sampler ratio.
`logging.level`	string	`info`	Global Keycloak log level.
`logging.console.output`	string	`default`	Console output mode: `default` or `json`.
`logging.console.jsonFormat`	string	`default`	JSON log format: `default` or `ecs`.
`logging.access.enabled`	boolean	`false`	Enable HTTP access logs.

Backup

Parameter	Type	Default	Description
`backup.enabled`	boolean	`false`	Enable database backup CronJob.
`backup.schedule`	string	`"0 3 * * *"`	Backup schedule.
`backup.suspend`	boolean	`false`	Suspend scheduled execution.
`backup.concurrencyPolicy`	string	`Forbid`	CronJob concurrency policy.
`backup.archivePrefix`	string	`keycloak`	Prefix for generated archive names.
`backup.images.uploader.repository`	string	`docker.io/helmforge/mc`	S3 uploader image.
`backup.images.uploader.tag`	string	`"1.0.0"`	S3 uploader image tag.
`backup.s3.endpoint`	string	`""`	S3-compatible endpoint URL.
`backup.s3.bucket`	string	`""`	Target bucket name.
`backup.s3.prefix`	string	`keycloak`	Object key prefix.
`backup.s3.createBucketIfNotExists`	boolean	`true`	Create bucket when missing.
`backup.s3.existingSecret`	string	`""`	Existing Secret with S3 credentials.
`backup.database.postgresDumpArgs`	string	`--clean --if-exists`	Extra `pg_dump` arguments.
`backup.database.mysqlDumpArgs`	string	`--single-transaction --quick --skip-lock-tables --no-tablespaces`	Extra `mysqldump` arguments.

Security, Scheduling, and Extension Points

Parameter	Type	Default	Description
`pdb.enabled`	boolean	`false`	Create PodDisruptionBudget.
`pdb.minAvailable`	integer	`1`	Minimum available pods.
`pdb.maxUnavailable`	string	`""`	Maximum unavailable pods.
`networkPolicy.enabled`	boolean	`false`	Create NetworkPolicy for Keycloak pods.
`networkPolicy.ingress.allowSameNamespace`	boolean	`true`	Allow app traffic from the same namespace.
`networkPolicy.management.allowSameNamespace`	boolean	`true`	Allow management traffic from the same namespace.
`networkPolicy.clustering.enabled`	boolean	`true`	Allow Keycloak pod-to-pod cache transport when multi-replica.
`networkPolicy.egress.enabled`	boolean	`false`	Add egress rules.
`networkPolicy.egress.allowDns`	boolean	`true`	Allow TCP/UDP DNS egress.
`networkPolicy.egress.allowDatabase`	boolean	`true`	Allow DB egress when `databaseTo` is configured.
`networkPolicy.egress.databaseTo`	array	`[]`	Egress destination peers for database traffic.
`networkPolicy.egress.extraEgress`	array	`[]`	Additional egress rules.
`serviceAccount.create`	boolean	`false`	Create a ServiceAccount.
`serviceAccount.name`	string	`""`	ServiceAccount name override.
`serviceAccount.automountServiceAccountToken`	boolean	`true`	Mount the Kubernetes ServiceAccount token and CA into the pod.
`podSecurityContext`	object	non-root defaults	Pod-level security context.
`securityContext`	object	non-root defaults	Container-level security context.
`nodeSelector`	object	`{}`	Node selector.
`tolerations`	array	`[]`	Pod tolerations.
`affinity`	object	`{}`	Custom affinity.
`topologySpreadConstraints`	array	`[]`	Custom topology spread constraints.
`priorityClassName`	string	`""`	PriorityClass name.
`terminationGracePeriodSeconds`	integer	`120`	Pod termination grace period.
`extraEnv`	array	`[]`	Extra environment variables.
`extraEnvFrom`	array	`[]`	Extra envFrom sources.
`initContainers`	array	`[]`	Extra init containers.
`extraContainers`	array	`[]`	Extra sidecars.
`extraVolumes`	array	`[]`	Extra pod volumes.
`extraVolumeMounts`	array	`[]`	Extra Keycloak volume mounts.

External Secrets Operator

Parameter	Type	Default	Description
`externalSecrets.enabled`	boolean	`false`	Render ExternalSecret resources for clusters that already run External Secrets Operator.
`externalSecrets.apiVersion`	string	`external-secrets.io/v1`	ExternalSecret API version.
`externalSecrets.refreshInterval`	string	`1h`	Refresh interval.
`externalSecrets.secretStoreRef.name`	string	`""`	Existing SecretStore or ClusterSecretStore name. Required when enabled.
`externalSecrets.secretStoreRef.kind`	string	`SecretStore`	Store kind: `SecretStore` or `ClusterSecretStore`.
`externalSecrets.admin.enabled`	boolean	`false`	Materialize bootstrap admin Secret through ESO.
`externalSecrets.database.enabled`	boolean	`false`	Materialize database password Secret through ESO.
`externalSecrets.truststore.enabled`	boolean	`false`	Materialize truststore Secret through ESO.

External Secrets is optional

The chart does not install External Secrets Operator and does not create SecretStore or ClusterSecretStore resources. Enable this only on clusters where the operator and store already exist.

Operational Notes

Chart.yaml pins PostgreSQL chart 1.9.13 and MySQL chart 1.8.7.
Chart.lock is versioned for reproducible dependency builds.
Built-in backup is database-only. Back up providers, themes, realm import files, truststores, and external secret backends through their own source-of-truth.
The management service is private and should not be exposed through public ingress.
Gateway API routes target the application service only; they do not route the management service.
Dual-stack fields are optional and omitted by default so the cluster default remains authoritative.
serviceAccount.automountServiceAccountToken=false can harden the pod, but it also removes the default Kubernetes CA material used by Keycloak truststore auto-discovery.