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bitnami/contour

Chart version: 3.3.2
Api version: v2
App version: 1.11.0
Contour Ingress controller for Kubernetes
application
Chart Type
Active
Status
Unknown
License
4058
Downloads
https://charts.bitnami.com/bitnami
Set me up:
helm repo add center https://repo.chartcenter.io
Install Chart:
helm install contour center/bitnami/contour
Versions (0)

contour

TL;DR

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

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 Contour Ingress Controller Deployment and a Envoy Proxy Daemonset 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 1.12+
  • Helm 3.0-beta3+
  • An Operator for ServiceType: LoadBalancer like MetalLB

Installing the Chart

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

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

These commands deploy contour 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 or helm ls --all-namespaces

Uninstalling the Chart

To uninstall/delete the my-release helm release:

$ helm uninstall my-release

The command removes all the Kubernetes components associated with the chart and deletes the release, except the CustomResourceDefinitions (CRD for short). :warning: To also remove the CRDs, please remember that all instances of the CRDs are removed too. If you are okay with that, you can remove the CRDs like this:

$ kubectl delete crd httpproxies.projectcontour.io tlscertificatedelegations.projectcontour.io

Parameters

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

Global parameters

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)

Common parameters

Parameter Description Default
nameOverride String to partially override contour.fullname template with a string (will prepend the release name) nil
fullnameOverride String to fully override contour.fullname template with a string nil
ingress.apiVersion Force Ingress API version (automatically detected if not set) nil
kubeVersion Force target Kubernetes version (using Helm capabilities if not set) nil

Contour parameters

Parameter Description Default
configInline Specify the config for contour as a new configMap inline. {Quickstart Config} (evaluated as a template)
contour.enabled Contour Deployment creation. true
contour.image.registry Contour image registry docker.io
contour.image.repository Contour image name bitnami/contour
contour.image.tag Contour image tag {TAG_NAME}
contour.pullPolicy Contour image pull policy IfNotPresent
contour.image.pullSecrets Specify docker-registry secret names as an array [] (does not add image pull secrets to deployed pods)
contour.extraArgs Extra arguments passed to Contour container []
contour.resources.limits Specify resource limits which the container is not allowed to succeed. {} (does not add resource limits to deployed pods)
contour.resources.requests Specify resource requests which the container needs to spawn. {} (does not add resource limits to deployed pods)
contour.installCRDs Install CustomResourceDefinitions via helm hooks (only helm v2, use --skip-crds on Helm 3) true
contour.customResourceDeletePolicy Deletion hook of CustomResourceDefinitions via helm hooks (only helm v2) nil
contour.podAffinityPreset Contour Pod affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
contour.podAntiAffinityPreset Contour Pod anti-affinity preset. Ignored if affinity is set. Allowed values: soft or hard soft
contour.nodeAffinityPreset.type Contour Node affinity preset type. Ignored if affinity is set. Allowed values: soft or hard ""
contour.nodeAffinityPreset.key Contour Node label key to match Ignored if affinity is set. ""
contour.nodeAffinityPreset.values Contour Node label values to match. Ignored if affinity is set. []
contour.affinity Affinity for contour pod assignment {} (evaluated as a template)
contour.nodeSelector Node labels for contour pod assignment {} (evaluated as a template)
contour.tolerations Tolerations for contour pod assignment [] (evaluated as a template)
contour.podAnnotations Contour Pod annotations {}
contour.serviceAccount.create create a serviceAccount for the contour pod true
contour.serviceAccount.name use the serviceAccount with the specified name ""
contour.livenessProbe.enabled Enable/disable the Liveness probe true
contour.livenessProbe.initialDelaySeconds Delay before liveness probe is initiated 120
contour.livenessProbe.periodSeconds How often to perform the probe 20
contour.livenessProbe.timeoutSeconds When the probe times out 5
contour.livenessProbe.successThreshold Minimum consecutive successes for the probe to be considered successful after having failed. 6
contour.livenessProbe.failureThreshold Minimum consecutive failures for the probe to be considered failed after having succeeded. 1
contour.readynessProbe.enabled Enable/disable the Readyness probe true
contour.readynessProbe.initialDelaySeconds Delay before readyness probe is initiated 15
contour.readynessProbe.periodSeconds How often to perform the probe 10
contour.readynessProbe.timeoutSeconds When the probe times out 5
contour.readynessProbe.successThreshold Minimum consecutive successes for the probe to be considered successful after having failed. 3
contour.readynessProbe.failureThreshold Minimum consecutive failures for the probe to be considered failed after having succeeded. 1
contour.certgen.serviceAccount.create create a serviceAccount for the contour pod true
contour.certgen.serviceAccount.name use the serviceAccount with the specified name ""
contour.tlsExistingSecret Name of the existing secret to be use in contour deployment. It will override .tlsExistingSecret, if it is not nil contour.certgen will be disabled. nil
contour.securityContext.enabled If the pod should run in a securityContext. true
contour.securityContext.runAsNonRoot If the pod should run as a non root container. true
contour.securityContext.runAsUser define the uid with which the pod will run 65534
contour.securityContext.runAsGroup define the gid with which the pod will run 65534
contour.service.extraPorts Service extra ports, normally used with the sidecar value. [] (evaluated as a template)
contour.initContainers Attach additional init containers to contour pods [] (evaluated as a template)
contour.extraVolumes Array to add extra volumes []
contour.extraVolumeMounts Array to add extra mounts (normally used with extraVolumes) []
contour.extraEnvVars Array containing extra env vars to be added to all contour containers [] (evaluated as a template)
contour.extraEnvVarsConfigMap ConfigMap containing extra env vars to be added to all contour containers "" (evaluated as a template)
contour.extraEnvVarsSecret Secret containing extra env vars to be added to all contour containers "" (evaluated as a template)
ingressClass Name of the ingress class to route through this controller (defaults to contour if nil) nil

Envoy parameters

Parameter Description Default
envoy.enabled Envoy Proxy Daemonset creation. true
envoy.image.registry Envoy Proxy image registry docker.io
envoy.image.repository Envoy Proxy image name bitnami/envoy
envoy.image.tag Envoy Proxy image tag {TAG_NAME}
envoy.pullPolicy Envoy Proxy image pull policy IfNotPresent
envoy.image.pullSecrets Specify docker-registry secret names as an array [] (does not add image pull secrets to deployed pods)
envoy.resources.limits Specify resource limits which the container is not allowed to succeed. {} (does not add resource limits to deployed pods)
envoy.resources.requests Specify resource requests which the container needs to spawn. {} (does not add resource limits to deployed pods)
envoy.podAffinityPreset Envoy Pod affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
envoy.podAntiAffinityPreset Envoy Pod anti-affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
envoy.nodeAffinityPreset.type Envoy Node affinity preset type. Ignored if affinity is set. Allowed values: soft or hard ""
envoy.nodeAffinityPreset.key Envoy Node label key to match Ignored if affinity is set. ""
envoy.nodeAffinityPreset.values Envoy Node label values to match. Ignored if affinity is set. []
envoy.affinity Affinity for envoy pod assignment {} (evaluated as a template)
envoy.nodeSelector Node labels for envoy pod assignment {} (evaluated as a template)
envoy.tolerations Tolerations for envoy pod assignment [] (evaluated as a template)
envoy.podAnnotations Envoy Pod annotations {}
envoy.podSecurityContext.enabled Envoy Pod securityContext false
envoy.containerSecurityContext.enabled Envoy Container securityContext true
envoy.containerSecurityContext.runAsUser User ID for the envoy container (to change this, http and https containerPorts must be set to >1024) 0
envoy.dnsPolicy Envoy Pod Dns Policy ClusterFirst
envoy.tlsExistingSecret Name of the existing secret to be use in envoy deployment. It will override .tlsExistingSecret, if it is not nil contour.certgen will be disabled. nil
envoy.hostNetwork Envoy Pod host network access false
envoy.readynessProbe.enabled Enable/disable the Readyness probe true
envoy.readynessProbe.initialDelaySeconds Delay before readyness probe is initiated 10
envoy.readynessProbe.periodSeconds How often to perform the probe 3
envoy.readynessProbe.timeoutSeconds When the probe times out 1
envoy.readynessProbe.successThreshold Minimum consecutive successes for the probe to be considered successful after having failed. 3
envoy.readynessProbe.failureThreshold Minimum consecutive failures for the probe to be considered failed after having succeeded. 1
envoy.service.type Type of envoy service to create LoadBalancer
envoy.service.externalTrafficPolicy If envoy.service.type is NodePort or LoadBalancer, set this to Local to enable source IP preservation Local
envoy.service.clusterIP Internal envoy cluster service IP ""
envoy.service.externalIPs Envoy service external IP addresses. []
envoy.service.extraPorts Service extra ports, normally used with the sidecar value. [] (evaluated as a template)
envoy.service.loadBalancerIP IP address to assign to load balancer (if supported) ""
envoy.service.loadBalancerSourceRanges List of IP CIDRs allowed access to load balancer (if supported) []
envoy.service.annotations Annotations for envoy service {}
envoy.service.ports.http Sets service http port 80
envoy.service.ports.https Sets service https port 443
envoy.service.nodePorts.http If envoy.service.type is NodePort and this is non-empty, it sets the nodePort that maps to envoys http port ""
envoy.service.nodePorts.https If envoy.service.type is NodePort and this is non-empty, it sets the nodePort that maps to envoys https port ""
envoy.useHostPort Enable/disable hostPort for TCP/80 and TCP/443 true
envoy.hostPorts.http Sets hostPort http port 80
envoy.hostPorts.https Sets hostPort https port 443
envoy.containerPorts.http Sets http port inside envoy pod (change this to >1024 to run envoy as a non-root user) 80
envoy.containerPorts.https Sets https port inside envoy pod (change this to >1024 to run envoy as a non-root user) 443
envoy.initContainers Attach additional init containers to envoy pods [] (evaluated as a template)
envoy.extraVolumes Array to add extra volumes []
envoy.extraVolumeMounts Array to add extra mounts (normally used with extraVolumes) []
envoy.extraEnvVars Array containing extra env vars to be added to all envoy containers [] (evaluated as a template)
envoy.extraEnvVarsConfigMap ConfigMap containing extra env vars to be added to all envoy containers "" (evaluated as a template)
envoy.extraEnvVarsSecret Secret containing extra env vars to be added to all envoy containers "" (evaluated as a template)

Default backend parameters

Parameter Description Default
defaultBackend.enabled Enable a default backend based on NGINX false
defaultBackend.image.registry Default backend image registry docker.io
defaultBackend.image.repository Default backend image name bitnami/nginx
defaultBackend.image.tag Default backend image tag {TAG_NAME}
defaultBackend.image.pullPolicy Image pull policy IfNotPresent
defaultBackend.image.pullSecrets Specify docker-registry secret names as an array [] (does not add image pull secrets to deployed pods)
defaultBackend.extraArgs Additional command line arguments to pass to NGINX container {}
defaultBackend.containerPort HTTP container port number 8080
defaultBackend.replicaCount Desired number of default backend pods 1
defaultBackend.podSecurityContext Default backend pods’ Security Context Check values.yaml file
defaultBackend.containerSecurityContext Default backend containers’ Security Context Check values.yaml file
defaultBackend.resources.limits The resources limits for the Default backend container {}
defaultBackend.resources.requests The requested resources for the Default backend container {}
defaultBackend.livenessProbe Liveness probe configuration for Default backend Check values.yaml file
defaultBackend.readinessProbe Readiness probe configuration for Default backend Check values.yaml file
defaultBackend.customLivenessProbe Override default liveness probe {} (evaluated as a template)
defaultBackend.customReadinessProbe Override default readiness probe {} (evaluated as a template)
defaultBackend.podAffinityPreset Pod affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
defaultBackend.podAntiAffinityPreset Pod anti-affinity preset. Ignored if affinity is set. Allowed values: soft or hard soft
defaultBackend.nodeAffinityPreset.type Node affinity preset type. Ignored if affinity is set. Allowed values: soft or hard ""
defaultBackend.nodeAffinityPreset.key Node label key to match. Ignored if affinity is set. ""
defaultBackend.nodeAffinityPreset.values Node label values to match. Ignored if affinity is set. []
defaultBackend.affinity Affinity for pod assignment {} (evaluated as a template)
defaultBackend.nodeSelector Node labels for pod assignment {} (evaluated as a template)
defaultBackend.tolerations Tolerations for pod assignment [] (evaluated as a template)
defaultBackend.podLabels Extra labels for Controller pods {} (evaluated as a template)
defaultBackend.podAnnotations Annotations for Controller pods {} (evaluated as a template)
defaultBackend.priorityClassName Priority class assigned to the pods ""
defaultBackend.pdb.create Enable/disable a Pod Disruption Budget creation for Default backend false
defaultBackend.pdb.minAvailable Minimum number/percentage of Default backend pods that should remain scheduled 1
defaultBackend.pdb.maxUnavailable Maximum number/percentage of Default backend pods that may be made unavailable nil
defaultBackend.service.type Service type ClusterIP
defaultBackend.service.port Service port 80

Other parameters

Parameter Description Default
existingConfigMap Specify an existing configMapName to use. (this mutually exclusive with existingConfigMap) nil
tlsExistingSecret Name of the existingSecret to be use in both contour and envoy. If it is not nil contour.certgen will be disabled. nil
rbac.create create the RBAC roles for API accessibility true

Metrics parameters

Parameter Description Default
prometheus.serviceMonitor.enabled Specify if a servicemonitor will be deployed for prometheus-operator. true
prometheus.serviceMonitor.namespace Specify if the servicemonitors will be deployed into a different namespace (blank deploys into same namespace as chart) nil
prometheus.serviceMonitor.jobLabel Specify the jobLabel to use for the prometheus-operator contour
prometheus.serviceMonitor.interval Specify the scrape interval if not specified use default prometheus scrapeIntervall ""
prometheus.serviceMonitor.metricRelabelings Specify additional relabeling of metrics. []
prometheus.serviceMonitor.relabelings Specify general relabeling. []

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

$ helm install my-release \
  --set envoy.readynessProbe.successThreshold=5 \
    bitnami/contour

The above command sets the envoy.readynessProbe.successThreshold to 5.

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.

To configure Contour please look into the configuration section Contour Configuration.

Example Quickstart Contour Confiuration

configInline:
  # should contour expect to be running inside a k8s cluster
  # incluster: true
  #
  # path to kubeconfig (if not running inside a k8s cluster)
  # kubeconfig: /path/to/.kube/config
  #
  # Client request timeout to be passed to Envoy
  # as the connection manager request_timeout.
  # Defaults to 0, which Envoy interprets as disabled.
  # Note that this is the timeout for the whole request,
  # not an idle timeout.
  # request-timeout: 0s
  # disable ingressroute permitInsecure field
  disablePermitInsecure: false
  tls:
  #   minimum TLS version that Contour will negotiate
  #   minimum-protocol-version: "1.1"
  # Defines the Kubernetes name/namespace matching a secret to use
  # as the fallback certificate when requests which don't match the
  # SNI defined for a vhost.
    fallback-certificate:
  #   name: fallback-secret-name
  #   namespace: projectcontour
  # The following config shows the defaults for the leader election.
  # leaderelection:
  #   configmap-name: leader-elect
  #   configmap-namespace: projectcontour
  ### Logging options
  # Default setting
  accesslog-format: envoy
  # To enable JSON logging in Envoy
  # accesslog-format: json
  # The default fields that will be logged are specified below.
  # To customise this list, just add or remove entries.
  # The canonical list is available at
  # https://godoc.org/github.com/projectcontour/contour/internal/envoy#JSONFields
  # json-fields:
  #   - "@timestamp"
  #   - "authority"
  #   - "bytes_received"
  #   - "bytes_sent"
  #   - "downstream_local_address"
  #   - "downstream_remote_address"
  #   - "duration"
  #   - "method"
  #   - "path"
  #   - "protocol"
  #   - "request_id"
  #   - "requested_server_name"
  #   - "response_code"
  #   - "response_flags"
  #   - "uber_trace_id"
  #   - "upstream_cluster"
  #   - "upstream_host"
  #   - "upstream_local_address"
  #   - "upstream_service_time"
  #   - "user_agent"
  #   - "x_forwarded_for"
  #
  # default-http-versions:
  # - "HTTP/2"
  # - "HTTP/1.1"
  #
  # The following shows the default proxy timeout settings.
  # timeouts:
  #   request-timeout: infinity
  #   connection-idle-timeout: 60s
  #   stream-idle-timeout: 5m
  #   max-connection-duration: infinity
  #   connection-shutdown-grace-period: 5s

Deploying Contour with an AWS NLB

By default, Contour is launched with a AWS Classic ELB. To launch contour backed by a NLB, please set these settings:

envoy:
  hostNetwork: true
  dnsPolicy: ClusterFirstWithHostNet
  service:
    annotations:
      service.beta.kubernetes.io/aws-load-balancer-type: nlb

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

Please carefully read through the guide “Upgrading Contour” at https://projectcontour.io/resources/upgrading/.

To 3.0.0

On November 13, 2020, Helm v2 support was formally finished, 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.

What changes were introduced in this major version?

  • Previous versions of this Helm Chart use apiVersion: v1 (installable by both Helm 2 and 3), this Helm Chart was updated to apiVersion: v2 (installable by Helm 3 only). Here you can find more information about the apiVersion field.
  • Move dependency information from the requirements.yaml to the Chart.yaml
  • After running helm dependency update, a Chart.lock file is generated containing the same structure used in the previous requirements.lock
  • The different fields present in the Chart.yaml file has been ordered alphabetically in a homogeneous way for all the Bitnami Helm Charts

Considerations when upgrading to this version

  • If you want to upgrade to this version from a previous one installed with Helm v3, you shouldn’t face any issues
  • If you want to upgrade to this version using Helm v2, this scenario is not supported as this version doesn’t support Helm v2 anymore
  • If you installed the previous version with Helm v2 and wants to upgrade to this version with Helm v3, please refer to the official Helm documentation about migrating from Helm v2 to v3

Useful links

To 2.0.0

Most important changes are:

  • Using helm hooks to generate new TLS certificates for gRPC calls between Contour and Envoy. This enables us to use the same container image for the contour controller and the certgen job without upgrade issues due to JobSpec immutablility.
  • Rename parameter contour.createCustomResource to contour.installCRDs
  • Sync CRDs with upstream project examples. Please remember that helm does not touch existing CRDs. As of today, the most reliable way to update the CRDs is, to do it outside helm (Use --skip-crds when using helm v3 and --set contour.installCRDs=false when using helm v2). Read Upgrading Contour and execute the following kubectl command before helm upgrade:
$ kubectl apply -f https://raw.githubusercontent.com/projectcontour/contour/release-{{version}}/examples/contour/01-crds.yaml

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.