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discoveryserver Helm chart

Installs discoveryserver to create/configure/manage the discovery service required when bootstrapping etcd clusters.

TL;DR;

$ kubectl create namespace discoveryserver
$ export ENV=(dev|prod)
$ helm upgrade discoveryserver . --install --namespace discoveryserver -f ${ENV}.values.yaml

Introduction

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

Prerequisites

  • Kubernetes 1.14+
  • Helm 3+
  • Etcd cluster

Create the namespace:

$ kubectl create namespace discoveryserver

To install the chart with the release name discoveryserver in the namespace discoveryserver:

$ export ENV=(dev|prod)
$ helm upgrade discoveryserver . --install --namespace discoveryserver -f ${ENV}.values.yaml --debug --atomic

The command deploys discoveryserver 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 discoveryserver deployment:

$ helm uninstall discoveryserver -n discoveryserver

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 discoveryserver chart and their default values.

Parameter Description Default
image.repository Image repository gcr.io/etcd-io-dev/discoveryserver
image.tag Image tag latest
image.pullPolicy Image pull policy Always
replicaCount Number of discoveryserver replicas 5
serviceAccount.create If true, create a new service account true
serviceAccount.name Service account to be used. If not set and serviceAccount.create is true, a name is generated using the fullname template ""
metrics.enabled Enable metrics scraped by prometheus true
metrics.serviceMonitor.enabled Enables the target to be monitored by Prometheus true
metrics.serviceMonitor.additionalLabels Additional labels that can be used so ServiceMonitor will be discovered by Prometheus {}
ingress.enabled Enable ingress controller resource true
ingress.annotations Specify ingress class kubernetes.io/ingress.class: nginx
ingress.hosts.host Discoveryserver hostnames true
ingress.hosts.paths Paths to match against incoming requests. [/]
ingress.tls.secretNames Secret's name where SSL/TLS certificate will be stored. discoveryserver-tls
ingress.tls.hosts Hosts for which SSL/TLS certificate must be issued. ["discovery.etcd.io", "www.discovery.etcd.io"]
environment List of environment variables required by the discoveryserver service container. {"DISC_ETCD":"http://discovery-etcd-cluster-client:2379", "DISC_HOST":"https://dev.discovery.etcd.io", "DISC_MINAGE":"12h"}