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Latest commit 4dfac07 Sep 20, 2019

README.md

Apache

The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards.

The Apache HTTP Server ("httpd") was launched in 1995 and it has been the most popular web server on the Internet since April 1996. It has celebrated its 20th birthday as a project in February 2015.

TL;DR

$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm install bitnami/apache

Introduction

Bitnami charts for Helm are carefully engineered, actively maintained and are the quickest and easiest way to deploy containers on a Kubernetes cluster that are ready to handle production workloads.

This chart bootstraps a Apache 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.

Installing the Chart

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

$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm install --name my-release bitnami/apache

These commands deploy Apache on the Kubernetes cluster in the default configuration.

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 Apache chart and their default values.

Parameter Description Default
global.imageRegistry Global Docker image registry nil
global.imagePullSecrets Global Docker registry secret names as an array [] (does not add image pull secrets to deployed pods)
image.registry Apache Docker image registry docker.io
image.repository Apache Docker image name bitnami/apache
image.tag Apache Docker image tag {TAG_NAME}
image.pullPolicy Apache Docker image pull policy Always
image.pullSecrets Specify Docker registry secret names as an array [] (does not add image pull secrets to deployed pods)
git.registry Git image registry docker.io
git.repository Git image name bitnami/git
git.tag Git image tag {TAG_NAME}
git.pullPolicy Git image pull policy Always
git.pullSecrets Specify docker-registry secret names as an array [] (does not add image pull secrets to deployed pods)
replicaCount Number of replicas of the Apache deployment docker.io
htdocsConfigMap ConfigMap with the server static content nil
htdocsPVC PVC with the server static content nil
cloneHtdocsFromGit.enabled Get the server static content from a git repository false
cloneHtdocsFromGit.repository Repository to clone static content from nil
cloneHtdocsFromGit.branch Branch inside the git repository nil
cloneHtdocsFromGit.interval Interval for sidecar container pull from the repository 60
podAnnotations Pod annotations {}
ingress.enabled Enable ingress controller resource false
ingress.certManager Add annotations for cert-manager false
ingress.annotations Ingress annotations []
ingress.hosts[0].name Hostname to your Apache installation example.local
ingress.hosts[0].path Path within the url structure /
ingress.tls[0].hosts[0] TLS hosts example.local
ingress.tls[0].secretName TLS Secret (certificates) example.local-tls
ingress.secrets[0].name TLS Secret Name nil
ingress.secrets[0].certificate TLS Secret Certificate nil
ingress.secrets[0].key TLS Secret Key nil
affinity Map of node/pod affinities {}
metrics.enabled Start a side-car prometheus exporter false
metrics.image.registry Apache exporter image registry docker.io
metrics.image.repository Apache exporter image name lusotycoon/apache-exporter
metrics.image.tag Apache exporter image tag v0.5.0
metrics.image.pullPolicy Apache exporter image pull policy IfNotPresent
metrics.image.pullSecrets Specify Docker registry secret names as an array [] (does not add image pull secrets to deployed pods)
metrics.podAnnotations Additional annotations for Metrics exporter pod {prometheus.io/scrape: "true", prometheus.io/port: "9117"}
metrics.resources Exporter resource requests/limit {}
service.type Kubernetes Service type LoadBalancer
service.port Service HTTP port 80
service.httpsPort Service HTTPS port 443
service.nodePorts.http Kubernetes http node port ""
service.nodePorts.https Kubernetes https node port ""
service.externalTrafficPolicy Enable client source IP preservation Cluster
service.loadBalancerIP LoadBalancer service IP address ""

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

$ helm install --name my-release \
  --set imagePullPolicy=Always \
    bitnami/apache

The above command sets the imagePullPolicy to Always.

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/apache

Tip: You can use the default values.yaml

Deploying your custom web application

The Apache chart allows you to deploy a custom web application using one of the following methods:

  • Cloning from a git repository: Set cloneHtdocsFromGit.enabled to true and set the repository and branch using the cloneHtdocsFromGit.repository and cloneHtdocsFromGit.branch parameters. A sidecar will also pull the latest changes in an interval set by cloneHtdocsFromGit.interval.
  • Providing a ConfigMap: Set the htdocsConfigMap value to mount a ConfigMap in the Apache htdocs folder.
  • Using an existing PVC: Set the htdocsPVC value to mount an PersistentVolumeClaim with the web application content.

In the following example you can deploy a example web application using git:

helm install bitnami/apache --set cloneHtdocsFromGit.enabled=true --set cloneHtdocsFromGit.repository=https://github.com/mdn/beginner-html-site-styled.git --set cloneHtdocsFromGit.branch=master

You may also want to mount different virtual host configurations. This can be done using the vhostsConfigMap value. This a pointer to a ConfigMap with the desired Apache virtual host configurations.

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.

Notable changes

7.0.0

This release updates the Bitnami Apache container to 2.4.41-debian-9-r40, which is based on Bash instead of Node.js.

6.0.0

This release allows you to use your custom static applicaton. In order to do so, check this section.

Upgrading

To 2.0.0

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 2.0.0. The following example assumes that the release name is apache:

$ kubectl patch deployment apache --type=json -p='[{"op": "remove", "path": "/spec/selector/matchLabels/chart"}]'
You can’t perform that action at this time.