Bitnami package for WildFly

Wildfly is a lightweight, open source application server, formerly known as JBoss, that implements the latest enterprise Java standards.

Overview of WildFly

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 install my-release oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly

Introduction

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

WildFly is written in Java, and implements the Java Platform, Enterprise Edition (Java EE) specification.

Bitnami charts can be used with Kubeapps for deployment and management of Helm Charts in clusters.

Prerequisites

Kubernetes 1.23+
Helm 3.8.0+
PV provisioner support in the underlying infrastructure
ReadWriteMany volumes for deployment scaling

Installing the Chart

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

helm install my-release oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly

These commands deploy WildFly on the Kubernetes cluster in the default configuration. The Parameters section lists the parameters that can be configured during installation.

Configuration and installation details

Resource requests and limits

Bitnami charts allow setting resource requests and limits for all containers inside the chart deployment. These are inside the resources value (check parameter table). Setting requests is essential for production workloads and these should be adapted to your specific use case.

To make this process easier, the chart contains the resourcesPreset values, which automatically sets the resources section according to different presets. Check these presets in the bitnami/common chart. However, in production workloads using resourcePreset is discouraged as it may not fully adapt to your specific needs. Find more information on container resource management in the official Kubernetes documentation.

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.

Persistence

The Bitnami WildFly image stores the WildFly data and configurations at the /bitnami/wildfly 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.

Adjust permissions of persistent volume mountpoint

As the image run as non-root by default, it is necessary to adjust the ownership of the persistent volume so that the container can write data into it.

By default, the chart is configured to use Kubernetes Security Context to automatically change the ownership of the volume. However, this feature does not work in all Kubernetes distributions. As an alternative, this chart supports using an initContainer to change the ownership of the volume before mounting it in the final destination.

You can enable this initContainer by setting volumePermissions.enabled to true.

Add extra environment variables

To add extra environment variables (useful for advanced operations like custom init scripts), use the extraEnvVars property.

extraEnvVars:
  - name: LOG_LEVEL
    value: DEBUG

Alternatively, use a ConfigMap or a Secret with the environment variables. To do so, use the extraEnvVarsCM or the extraEnvVarsSecret values.

Use Sidecars and Init Containers

If additional containers are needed in the same pod (such as additional metrics or logging exporters), they can be defined using the sidecars config parameter.

sidecars:
- name: your-image-name
  image: your-image
  imagePullPolicy: Always
  ports:
  - name: portname
    containerPort: 1234

If these sidecars export extra ports, extra port definitions can be added using the service.extraPorts parameter (where available), as shown in the example below:

service:
  extraPorts:
  - name: extraPort
    port: 11311
    targetPort: 11311

If additional init containers are needed in the same pod, they can be defined using the initContainers parameter. Here is an example:

initContainers:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
      - name: portname
        containerPort: 1234

Learn more about sidecar containers and init containers.

Set Pod affinity

This chart allows you to set custom Pod affinity using the affinity parameter. Find more information about Pod affinity in the Kubernetes documentation.

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

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.compatibility.openshift.adaptSecurityContext`	Adapt the securityContext sections of the deployment to make them compatible with Openshift restricted-v2 SCC: remove runAsUser, runAsGroup and fsGroup and let the platform use their allowed default IDs. Possible values: auto (apply if the detected running cluster is Openshift), force (perform the adaptation always), disabled (do not perform adaptation)	`disabled`

Common parameters

Name	Description	Value
`kubeVersion`	Override Kubernetes version	`""`
`nameOverride`	String to partially override common.names.fullname	`""`
`fullnameOverride`	String to fully override common.names.fullname	`""`
`commonLabels`	Labels to add to all deployed objects	`{}`
`commonAnnotations`	Annotations to add to all deployed objects	`{}`
`clusterDomain`	Kubernetes cluster domain name	`cluster.local`
`extraDeploy`	Array of extra objects to deploy with the release	`[]`
`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 the deployment(s)/statefulset(s)	`["sleep"]`
`diagnosticMode.args`	Args to override all containers in the the deployment(s)/statefulset(s)	`["infinity"]`

WildFly Image parameters

Name	Description	Value
`image.registry`	WildFly image registry	`REGISTRY_NAME`
`image.repository`	WildFly image repository	`REPOSITORY_NAME/wildfly`
`image.digest`	WildFly image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag	`""`
`image.pullPolicy`	WildFly image pull policy	`IfNotPresent`
`image.pullSecrets`	WildFly image pull secrets	`[]`
`image.debug`	Enable image debug mode	`false`

WildFly Configuration parameters

Name	Description	Value
`wildflyUsername`	WildFly username	`user`
`wildflyPassword`	WildFly user password	`""`
`exposeManagementConsole`	Allows exposing the WildFly Management console outside the cluster	`false`
`command`	Override default container command (useful when using custom images)	`[]`
`args`	Override default container args (useful when using custom images)	`[]`
`lifecycleHooks`	for the container to automate configuration before or after startup	`{}`
`extraEnvVars`	Array with extra environment variables to add to the WildFly container	`[]`
`extraEnvVarsCM`	Name of existing ConfigMap containing extra env vars	`""`
`extraEnvVarsSecret`	Name of existing Secret containing extra env vars	`""`

WildFly deployment parameters

Name	Description	Value
`replicaCount`	Number of Wildfly replicas to deploy	`1`
`updateStrategy.type`	WildFly deployment strategy type	`RollingUpdate`
`automountServiceAccountToken`	Mount Service Account token in pod	`true`
`hostAliases`	WildFly pod host aliases	`[]`
`extraVolumes`	Optionally specify extra list of additional volumes for WildFly pods	`[]`
`extraVolumeMounts`	Optionally specify extra list of additional volumeMounts for WildFly container(s)	`[]`
`serviceAccountName`	Name of existing ServiceAccount to be connected	`""`
`sidecars`	Add additional sidecar containers to the WildFly pod	`[]`
`initContainers`	Add additional init containers to the WildFly pods	`[]`
`pdb.create`	Enable/disable a Pod Disruption Budget creation	`true`
`pdb.minAvailable`	Minimum number/percentage of pods that should remain scheduled	`""`
`pdb.maxUnavailable`	Maximum number/percentage of pods that may be made unavailable. Defaults to `1` if both `pdb.minAvailable` and `pdb.maxUnavailable` are empty.	`""`
`podLabels`	Extra labels for WildFly pods	`{}`
`podAnnotations`	Annotations for WildFly pods	`{}`
`podAffinityPreset`	Pod affinity preset. Ignored if `affinity` is set. Allowed values: `soft` or `hard`	`""`
`podAntiAffinityPreset`	Pod anti-affinity preset. Ignored if `affinity` is set. Allowed values: `soft` or `hard`	`soft`
`nodeAffinityPreset.type`	Node affinity preset type. Ignored if `affinity` is set. Allowed values: `soft` or `hard`	`""`
`nodeAffinityPreset.key`	Node label key to match. Ignored if `affinity` is set	`""`
`nodeAffinityPreset.values`	Node label values to match. Ignored if `affinity` is set	`[]`
`affinity`	Affinity for pod assignment	`{}`
`nodeSelector`	Node labels for pod assignment	`{}`
`tolerations`	Tolerations for pod assignment	`{}`
`priorityClassName`	Pod priorityClassName	`""`
`schedulerName`	Name of the k8s scheduler (other than default)	`""`
`topologySpreadConstraints`	Topology Spread Constraints for pod assignment	`[]`
`resourcesPreset`	Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if resources is set (resources is recommended for production).	`small`
`resources`	Set container requests and limits for different resources like CPU or memory (essential for production workloads)	`{}`
`containerPorts.http`	WildFly HTTP container port	`8080`
`containerPorts.https`	WildFly HTTPS container port	`8443`
`containerPorts.mgmt`	WildFly Management container port	`9990`
`extraContainerPorts`	Array with extra container ports to add to the WildFly container	`[]`
`podSecurityContext.enabled`	Enabled WildFly pods’ Security Context	`true`
`podSecurityContext.fsGroupChangePolicy`	Set filesystem group change policy	`Always`
`podSecurityContext.sysctls`	Set kernel settings using the sysctl interface	`[]`
`podSecurityContext.supplementalGroups`	Set filesystem extra groups	`[]`
`podSecurityContext.fsGroup`	Set WildFly pod’s Security Context fsGroup	`1001`
`containerSecurityContext.enabled`	Enabled containers’ Security Context	`true`
`containerSecurityContext.seLinuxOptions`	Set SELinux options in container	`{}`
`containerSecurityContext.runAsUser`	Set containers’ Security Context runAsUser	`1001`
`containerSecurityContext.runAsGroup`	Set containers’ Security Context runAsGroup	`1001`
`containerSecurityContext.runAsNonRoot`	Set container’s Security Context runAsNonRoot	`true`
`containerSecurityContext.privileged`	Set container’s Security Context privileged	`false`
`containerSecurityContext.readOnlyRootFilesystem`	Set container’s Security Context readOnlyRootFilesystem	`true`
`containerSecurityContext.allowPrivilegeEscalation`	Set container’s Security Context allowPrivilegeEscalation	`false`
`containerSecurityContext.capabilities.drop`	List of capabilities to be dropped	`["ALL"]`
`containerSecurityContext.seccompProfile.type`	Set container’s Security Context seccomp profile	`RuntimeDefault`
`startupProbe.enabled`	Enable startupProbe	`false`
`startupProbe.initialDelaySeconds`	Initial delay seconds for startupProbe	`120`
`startupProbe.periodSeconds`	Period seconds for startupProbe	`10`
`startupProbe.timeoutSeconds`	Timeout seconds for startupProbe	`5`
`startupProbe.failureThreshold`	Failure threshold for startupProbe	`6`
`startupProbe.successThreshold`	Success threshold for startupProbe	`1`
`livenessProbe.enabled`	Enable livenessProbe	`true`
`livenessProbe.initialDelaySeconds`	Initial delay seconds for livenessProbe	`120`
`livenessProbe.periodSeconds`	Period seconds for livenessProbe	`10`
`livenessProbe.timeoutSeconds`	Timeout seconds for livenessProbe	`5`
`livenessProbe.failureThreshold`	Failure threshold for livenessProbe	`6`
`livenessProbe.successThreshold`	Success threshold for livenessProbe	`1`
`readinessProbe.enabled`	Enable readinessProbe	`true`
`readinessProbe.initialDelaySeconds`	Initial delay seconds for readinessProbe	`30`
`readinessProbe.periodSeconds`	Period seconds for readinessProbe	`5`
`readinessProbe.timeoutSeconds`	Timeout seconds for readinessProbe	`3`
`readinessProbe.failureThreshold`	Failure threshold for readinessProbe	`3`
`readinessProbe.successThreshold`	Success threshold for readinessProbe	`1`
`customStartupProbe`	Custom startupProbe that overrides the default one	`{}`
`customLivenessProbe`	Custom livenessProbe that overrides the default one	`{}`
`customReadinessProbe`	Custom readinessProbe that overrides the default one	`{}`

Traffic Exposure Parameters

Name	Description	Value
`service.type`	WildFly service type	`LoadBalancer`
`service.ports.http`	WildFly service HTTP port	`80`
`service.ports.mgmt`	WildFly service management console port	`9990`
`service.nodePorts.http`	Node port for HTTP	`""`
`service.nodePorts.mgmt`	Node port for Management console	`""`
`service.clusterIP`	WildFly service Cluster IP	`""`
`service.loadBalancerIP`	WildFly service Load Balancer IP	`""`
`service.loadBalancerSourceRanges`	WildFly service Load Balancer sources	`[]`
`service.externalTrafficPolicy`	WildFly service external traffic policy	`Cluster`
`service.annotations`	Additional custom annotations for WildFly service	`{}`
`service.extraPorts`	Extra ports to expose on WildFly service	`[]`
`service.sessionAffinity`	Session Affinity for Kubernetes service, can be “None” or “ClientIP”	`None`
`service.sessionAffinityConfig`	Additional settings for the sessionAffinity	`{}`
`serviceAccount.create`	Enable creation of ServiceAccount for Wildfly pod	`true`
`serviceAccount.name`	The name of the ServiceAccount to use.	`""`
`serviceAccount.automountServiceAccountToken`	Allows auto mount of ServiceAccountToken on the serviceAccount created	`false`
`serviceAccount.annotations`	Additional custom annotations for the ServiceAccount	`{}`
`networkPolicy.enabled`	Specifies whether a NetworkPolicy should be created	`true`
`networkPolicy.allowExternal`	Don’t require client label for connections	`true`
`networkPolicy.allowExternalEgress`	Allow the pod to access any range of port and all destinations.	`true`
`networkPolicy.extraIngress`	Add extra ingress rules to the NetworkPolicy	`[]`
`networkPolicy.extraEgress`	Add extra ingress rules to the NetworkPolicy	`[]`
`networkPolicy.ingressNSMatchLabels`	Labels to match to allow traffic from other namespaces	`{}`
`networkPolicy.ingressNSPodMatchLabels`	Pod labels to match to allow traffic from other namespaces	`{}`
`ingress.enabled`	Enable ingress record generation for WildFly	`false`
`ingress.pathType`	Ingress path type	`ImplementationSpecific`
`ingress.apiVersion`	Force Ingress API version (automatically detected if not set)	`""`
`ingress.hostname`	Default host for the ingress record	`wildfly.local`
`ingress.path`	Default path for the ingress record	`/`
`ingress.annotations`	Additional annotations for the Ingress resource. To enable certificate autogeneration, place here your cert-manager annotations.	`{}`
`ingress.tls`	Enable TLS configuration for the host defined at `ingress.hostname` parameter	`false`
`ingress.extraHosts`	An array with additional hostname(s) to be covered with the ingress record	`[]`
`ingress.extraPaths`	An array with additional arbitrary paths that may need to be added to the ingress under the main host	`[]`
`ingress.extraTls`	TLS configuration for additional hostname(s) to be covered with this ingress record	`[]`
`ingress.secrets`	Custom TLS certificates as secrets	`[]`
`ingress.ingressClassName`	IngressClass that will be be used to implement the Ingress (Kubernetes 1.18+)	`""`
`ingress.extraRules`	Additional rules to be covered with this ingress record	`[]`
`mgmtIngress.enabled`	Set to true to enable ingress record generation for the Management console	`false`
`mgmtIngress.pathType`	Ingress path type	`ImplementationSpecific`
`mgmtIngress.hostname`	When the Management ingress is enabled, a host pointing to this will be created	`management.local`
`mgmtIngress.annotations`	Additional annotations for the Management Ingress resource. To enable certificate autogeneration, place here your cert-manager annotations.	`{}`
`mgmtIngress.tls`	Enable TLS configuration for the hostname defined at `mgmtIngress.hostname` parameter	`false`
`mgmtIngress.extraHosts`	The list of additional hostnames to be covered with this Management ingress record	`[]`
`mgmtIngress.extraPaths`	An array with additional arbitrary paths that may need to be added to the ingress under the main host	`[]`
`mgmtIngress.extraTls`	TLS configuration for additional hostnames to be covered	`[]`
`mgmtIngress.secrets`	TLS Secret configuration	`[]`
`mgmtIngress.ingressClassName`	IngressClass that will be be used to implement the Ingress (Kubernetes 1.18+)	`""`

Persistence Parameters

Name	Description	Value
`persistence.enabled`	Enable persistence using Persistent Volume Claims	`true`
`persistence.storageClass`	Persistent Volume storage class	`""`
`persistence.existingClaim`	Use a existing PVC which must be created manually before bound	`""`
`persistence.accessModes`	Persistent Volume access modes	`[]`
`persistence.size`	Persistent Volume size	`8Gi`
`persistence.annotations`	Persistent Volume Claim annotations	`{}`
`volumePermissions.enabled`	Enable init container that changes the owner/group of the PV mount point to `runAsUser:fsGroup`	`false`
`volumePermissions.image.registry`	OS Shell + Utility image registry	`REGISTRY_NAME`
`volumePermissions.image.repository`	OS Shell + Utility image repository	`REPOSITORY_NAME/os-shell`
`volumePermissions.image.digest`	OS Shell + Utility image digest in the way sha256:aa…. Please note this parameter, if set, will override the tag	`""`
`volumePermissions.image.pullPolicy`	OS Shell + Utility image pull policy	`IfNotPresent`
`volumePermissions.image.pullSecrets`	OS Shell + Utility image pull secrets	`[]`
`volumePermissions.resourcesPreset`	Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if volumePermissions.resources is set (volumePermissions.resources is recommended for production).	`nano`
`volumePermissions.resources`	Set container requests and limits for different resources like CPU or memory (essential for production workloads)	`{}`
`volumePermissions.securityContext.seLinuxOptions`	Set SELinux options in container	`nil`
`volumePermissions.securityContext.runAsUser`	Set init container’s Security Context runAsUser	`0`

The above parameters map to the env variables defined in bitnami/wildfly. For more information please refer to the bitnami/wildfly image documentation.

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

helm install my-release \
  --set wildflyUser=manager,wildflyPassword=password \
    oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly

The above command sets the WildFly management username and password to manager and password respectively.

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 oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly

Troubleshooting

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

Upgrading

To 19.0.0

This major bump changes the following security defaults:

runAsGroup is changed from 0 to 1001
readOnlyRootFilesystem is set to true
resourcesPreset is changed from none to the minimum size working in our test suites (NOTE: resourcesPreset is not meant for production usage, but resources adapted to your use case).
global.compatibility.openshift.adaptSecurityContext is changed from disabled to auto.

This could potentially break any customization or init scripts used in your deployment. If this is the case, change the default values to the previous ones.

To 10.0.0

Due to recent changes in the container image (see Notable changes), the major version of the chart has been bumped preemptively.

Upgrading from version 9.x.x should be possible without any extra required step, but it’s highly recommended to backup your custom web apps data before upgrading.

To 7.0.0

Chart labels were adapted to follow the Helm charts standard labels.
Ingress configuration was also adapted to follow the Helm charts best practices.
This version also introduces bitnami/common, a library chart as a dependency. More documentation about this new utility could be found here. Please, make sure that you have updated the chart dependencies before executing any upgrade.

Consequences:

Backwards compatibility is not guaranteed. However, you can easily workaround this issue by removing Wildfly deployment before upgrading (the following example assumes that the release name is wildfly):

export WILDFLY_PASSWORD=$(kubectl get secret --namespace default wildfly -o jsonpath="{.data.wildfly-password}" | base64 -d)
kubectl delete deployments.apps wildfly
helm upgrade wildfly oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly --set wildflyPassword=$WILDFLY_PASSWORD

To 6.0.0

On November 13, 2020, Helm v2 support formally ended. This major version is the result of the required changes applied to the Helm Chart to be able to incorporate the different features added in Helm v3 and to be consistent with the Helm project itself regarding the Helm v2 EOL.

To 2.1.0

WildFly container was moved to a non-root approach. There shouldn’t be any issue when upgrading since the corresponding securityContext is enabled by default. Both the container image and the chart can be upgraded by running the command below:

helm upgrade my-release oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly

If you use a previous container image (previous to 14.0.1-r75) disable the securityContext by running the command below:

helm upgrade my-release oci://REGISTRY_NAME/REPOSITORY_NAME/wildfly --set securityContext.enabled=false,image.tag=XXX

To 1.0.0

Backwards compatibility is not guaranteed unless you modify the labels used on the chart’s deployments. Use the workaround below to upgrade from versions previous to 1.0.0. The following example assumes that the release name is wildfly:

kubectl patch deployment wildfly --type=json -p='[{"op": "remove", "path": "/spec/selector/matchLabels/chart"}]'

License

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.