Mailhog

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Mailhog is an e-mail testing tool for developers.

TL;DR

helm repo add codecentric https://codecentric.github.io/helm-charts
helm install mailhog codecentric/mailhog

Introduction

This chart creates a Mailhog deployment on a Kubernetes cluster using the Helm package manager.

Installing the Chart

To install the chart with the release name mailhog:

helm install mailhog codecentric/mailhog

The command deploys Mailhog on the Kubernetes cluster in the default configuration. The configuration section lists the parameters that can be configured during installation.

Uninstalling the Chart

To uninstall/delete the mailhog deployment:

helm uninstall mailhog

The command removes all the Kubernetes components associated with the chart and deletes the release.

Configuration

The following table lists the configurable parameters of the Mailhog chart and their default values.

Parameter	Description	Default
extraContainers	Additional containers to be added to the application pod	[]
image.repository	Docker image repository	mailhog/mailhog
image.tag	Docker image tag whose default is the chart version	""
image.pullPolicy	Docker image pull policy	IfNotPresent
imagePullSecrets	Docker image pull secrets	[]
auth.enabled	Specifies whether basic authentication is enabled, see Auth.md	false
auth.existingSecret	If auth is enabled, uses an existing secret with this name; otherwise a secret is created	""
auth.fileName	The name of the auth file	auth.txt
auth.fileContents	The contents of the auth file	""
affinity	Node affinity for pod assignment	{}
containerPort.http.name	Configure the Http name of the Mailhog container	http
containerPort.http.port	Configure the Http port of the Mailhog container	8025
containerPort.smtp.name	Configure the Smtp name of the Mailhog container	tcp-smtp
containerPort.smtp.port	Configure the Smtp port of the Mailhog container	1025
nodeSelector	Node labels for pod assignment	{}
podReplicas	The number of pod replicas	1
podAnnotations	Extra annotations to add to pod	{}
podLabels	Extra labels to add to pod	{}
resources	Pod resource requests and limits	{}
tolerations	Node taints to tolerate	[]
priorityClassName	Name of the existing priority class to be used by Mailhog pod, priority class needs to be created beforehand	""
livenessProbe	The Liveness Probe to add to pod	{ "initialDelaySeconds": 10, "tcpPort": { "port": "1025" }, "timeoutSeconds": 1 }
readinessProbe	The Readiness Probe to add to pod	{"tcpPort": { "port": "1025" }
serviceAccount.create	Specifies whether a ServiceAccount should be created	true
serviceAccount.name	The name of the service account to use. If not set and create is true, a name is generated using the fullname template	""
serviceAccount.imagePullSecrets	Image pull secrets that are attached to the ServiceAccount	[]
automountServiceAccountToken	Indicates whether the service account token should be automatically mounted	false
service.annotations	Annotations for the service	{}
service.clusterIP	Internal cluster service IP	""
service.externalIPs	Service external IP addresses	[]
service.extraPorts	Additional ports to the service	[]
service.loadBalancerIP	IP address to assign to load balancer (if supported)	""
service.loadBalancerSourceRanges	List of IP CIDRs allowed access to load balancer (if supported)	[]
service.type	Type of service to create	ClusterIP
service.namedTargetPort	Use named target port for service	true
service.port.http	HTTP port of service	""
service.port.smtp	SMTP port of service	""
service.nodePort.http	If service.type is NodePort and this is non-empty, sets the http node port of the service	""
service.nodePort.smtp	If service.type is NodePort and this is non-empty, sets the smtp node port of the service	""
securityContext	Pod security context	{ runAsUser: 1000, fsGroup: 1000, runAsNonRoot: true }
ingress.enabled	If true, an ingress is created	false
ingress.ingressClassName	If set the created Ingress resource will have this class name. kubernetes.io/ingress.class is deprecated	nil
ingress.annotations	Annotations for the ingress	{}
ingress.labels	Labels for the ingress	{}
ingress.hosts	A list of ingress hosts	{ host: mailhog.example.com, paths: [{ path: "/", pathType: Prefix }] }
ingress.tls	A list of IngressTLS items	[]
extraEnv	Additional environment variables, see CONFIG.md	{}

Upgrading

From chart < 5.0.0

Ingress path definitions are extended to describe path and pathType. Previously only the path was configured. Please adapt your configuration as shown below:

Old:

ingress:
  # ...
  hosts:
    - host: mailhog.example.com
      # Paths for the host
      paths:
        - /

New:

ingress:
  # ...
  hosts:
    - host: mailhog.example.com
      # Paths for the host
      paths:
        - path: /
          pathType: Prefix

This allows to configure specific pathType configurations, e.g. pathType: ImplementationSpecific for GKE Ingress on Google Cloud Platform.