@helm-charts/bitnami-tomcat v2.2.2-0.1.0

@helm-charts/bitnami-tomcat

Chart for Apache Tomcat

## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry and imagePullSecrets
##
# global:
#   imageRegistry: myRegistryName
#   imagePullSecrets:
#     - myRegistryKeySecretName

## Bitnami Tomcat image version
## ref: https://hub.docker.com/r/bitnami/tomcat/tags/
##
image:
  registry: docker.io
  repository: bitnami/tomcat
  tag: 8.5.40
  ## Specify a imagePullPolicy
  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
  ##
  pullPolicy: IfNotPresent
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ##
  # pullSecrets:
  #   - myRegistryKeySecretName

## Pod Security Context
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
##
securityContext:
  enabled: true
  fsGroup: 1001
  runAsUser: 1001

## Specify a imagePullPolicy
## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
##
imagePullPolicy: IfNotPresent

## Admin user
## ref: https://github.com/bitnami/bitnami-docker-tomcat#creating-a-custom-user
##
tomcatUsername: user

## Admin password
## ref: https://github.com/bitnami/bitnami-docker-tomcat#creating-a-custom-user
##
# tomcatPassword:

## Expose management services
## ref: https://github.com/bitnami/charts/tree/master/bitnami/tomcat#configuration
##
tomcatAllowRemoteManagement: 0

## Kubernetes configuration
## For minikube, set this to NodePort, elsewhere use LoadBalancer
##
service:
  type: LoadBalancer
  # HTTP Port
  port: 80
  ##
  ## loadBalancerIP:
  ## nodePorts:
  ##   http: <to set explicitly, choose port between 30000-32767>
  ##   https: <to set explicitly, choose port between 30000-32767>
  nodePorts:
    http: ''
  ## Enable client source IP preservation
  ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
  ##
  externalTrafficPolicy: Cluster

## Enable persistence using Persistent Volume Claims
## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
##
persistence:
  enabled: true
  ## If defined, volume.beta.kubernetes.io/storage-class: <storageClass>
  ## Default: volume.alpha.kubernetes.io/storage-class: default
  ##
  # storageClass:
  accessMode: ReadWriteOnce
  size: 8Gi

## Configure resource requests and limits
## ref: http://kubernetes.io/docs/user-guide/compute-resources/
##
resources:
  requests:
    memory: 512Mi
    cpu: 300m

Tomcat

Apache Tomcat, often referred to as Tomcat, is an open-source web server and servlet container developed by the Apache Software Foundation. Tomcat implements several Java EE specifications including Java Servlet, JavaServer Pages, Java EL, and WebSocket, and provides a "pure Java" HTTP web server environment for Java code to run in.

TL;DR;

$ helm install bitnami/tomcat

Introduction

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

Bitnami charts can be used with Kubeapps for deployment and management of Helm Charts in clusters. This Helm chart has been tested on top of Bitnami Kubernetes Production Runtime (BKPR). Deploy BKPR to get automated TLS certificates, logging and monitoring for your applications.

Prerequisites

• Kubernetes 1.4+ with Beta APIs enabled
• PV provisioner support in the underlying infrastructure

Installing the Chart

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

$ helm install --name my-release bitnami/tomcat

The command deploys Tomcat on the Kubernetes cluster in the default configuration. The configuration 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 associated with the chart and deletes the release.

Configuration

The following tables lists the configurable parameters of the Tomcat chart and their default values.

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

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

$ helm install --name my-release \
  --set tomcatUser=manager,tomcatPassword=password bitnami/tomcat

The above command sets the Tomcat 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 --name my-release -f values.yaml bitnami/tomcat

Tip: You can use the default values.yaml

Persistence

The Bitnami Tomcat image stores the Tomcat data and configurations at the /bitnami/tomcat 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 Configuration section to configure the PVC or to disable persistence.

Upgrading

To 2.1.0

Tomcat 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 stable/tomcat

If you use a previous container image (previous to 8.5.35-r26) disable the securityContext by running the command below:

$ helm upgrade my-release stable/tomcat --set securityContext.enabled=fase,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 tomcat:

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