Helm Chart for PowerDNS

• Installs a PowerDNS authoritative nameserver

TL;DR;

$ git clone https://github.com/cdwv/powerdns-helm
$ cd powerdns-helm
$ helm install .

Note: This will leave you with a PowerDNS server deployed to your k8s cluster. You will also need to configure some means of accesibility from the outside world for the DNS server to be accesible. You can do it e.g. by modifying your nginx-ingress-controller.

Installing the Chart

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

$ helm install --name my-release .

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

PowerDNS

Parameter	Description	Default
pdns.api.enabled	Should the PowerDNS API be enabled	yes
pdns.api.key	PowerDNS API key	PowerDNSAPI
pdns.webserver.allowFrom	PowerDNS webserver allowed IP whitelist	0.0.0.0/0
pdns.dnsupdate.enabled	Should DNS UPDATE support be enabled	no
replicaCount	Number of pdns nodes	1
image.repository	Image repository	psitrax/powerdns
image.tag	Image tag.	4.1.2
image.pullPolicy	Image pull policy	IfNotPresent
service.type	Kubernetes service type	ClusterIP
ingress.enabled	Enables Ingress	false
ingress.annotations	Ingress annotations	{}
ingress.path	Custom path	/
ingress.hosts	Ingress accepted hostnames	chart-example.local
ingress.tls	Ingress TLS configuration	[]
resources	CPU/Memory resource limits/requests	{}
nodeSelector	Node labels for pod assignment	{}
tolerations	Toleration labels for pod assignment	[]
affinity	Affinity settings for pod assignment	{}
mariadb.enabled	Deploy MariaDB container(s)	true
mariadb.mariadbRootPassword	MariaDB admin password	nil
mariadb.mariadbDatabase	Database name to create	powerdns
mariadb.mariadbUser	Database user to create	powerdns
mariadb.mariadbPassword	Password for the database	powerdns
mariadb.persistence.enabled	Enable persistence using PVC	false
mariadb.persistence.existingClaim	Enable persistence using an existing PVC	nil
mariadb.persistence.storageClass	PVC Storage Class	nil (uses alpha storage class annotation)
mariadb.persistence.accessMode	PVC Access Mode	ReadWriteOnce
mariadb.persistence.size	PVC Storage Request	2Gi
mariadb.serviceDiscovery	Discovery of mariadb service. One of: dns, env	dns

Modifications to nginx-ingress

General steps are outlined below. You can consult the files in the nginx-ingress folder for more information.

1. Patch the nginx-ingress deployment to add UDP services (--udp-services-configmap=nginx-ingress/udp-ports)
2. Add udp-ports configmap to nginx-ingress namespace
3. Add a UDP loadbalancer service

TODO

• - Make sure all kubernetes/charts technical requirements are met
• - Make sure all kubernetes/charts documentation requirements are met
• - Add more pdns configuration options
• - Support secrets