Chart version: 1.0.2
Api version: v2
App version: 1.0.0
Labelling mongo pods (as primary or secondary ) periodically ch...
Chart Type
Set me up:
helm repo add center
Install Chart:
helm install mongo-pod-labeler center/hmdmph/mongo-pod-labeler
Versions (0)


Mongo pod labeler is a simple tool that label the pods of mongo cluster with their role. Written in simple python3 script.

  • This is help to determine which pod is primary/ secondary
  • Useful when exposing mongo primary/ secondary via nodeport( so in your service you can have these labels as selector)

This chart deploys a small pod and create service account with required privileges to run and update the labels of mongo pods. Its just a simple tool that can be run on your namespace as same as your mongo namespace.


$ helm install hmdmph/mongo-pod-labeler


  • Kubernetes 1.8+ with Beta APIs enabled
  • Deployed mongo cluster

Installing the Chart

To install the chart with the release name you can give a name as you wish mongo-labeler

$ helm repo add hmdmph
$ helm install --name mongo-labeler hmdmph/mongo-pod-labeler

This Helm chart deploys mongo-pod-labeler on the Kubernetes cluster in a default configuration. The configuration section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Tip List installed mongo-labeler release helm list | grep mongo-pod-labeler

Tip get history of chart version/ status/ etc… mongo-pod-labeler releases helm history mongo-labeler

Uninstalling the Chart

To uninstall/delete the mongo-labeler Deployment:

$ helm delete mongo-labeler

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

Upgrading an existing Release to a new major version

A major chart version change (like v2.1.0 -> v3.0.0) indicates that there may be incompatible or breaking changes that require manual actions.



  • use latest Kubernetes spec for deployment


  • Improved alpine based small image
  • clear logs in verbose mode


  • This is the initial version of the mongo-pod-labeler chart with the minimal configuration/ settings.


The following table lists main configurable most common parameters of the mongo-pod-labeler chart and their default values:

Parameter Description Default
replicaCount number of replicas 1
namespace namespace that you want to install mongo-pod-labeler mongo
labelUpdateFrequency how frequent you want to update the mongo pods labels (in seconds) 60
mongoPodSelector.keyValuePair key=value of to match and get the mongo pods app=mongodb-replicaset
verbose.enabled detailed output in the logs false
nameOverride override chart name ””
fullnameOverride override chart full name ””
image.repository image repository hmdmph/mongo-pod-labeler
image.tag image tag 1.0.1-alpine
image.pullPolicy image pull policy IfNotPresent
resources.limits.cpu cpu resource limit 200m
resources.limits.memory memory resource limit 200Mi
resources.requests.cpu cpu request 100m
resources.requests.memory memory request 128Mi
nodeSelector node selector {}
tolerations tolerations []
affinity pod affinity {}
imagePullSecrets image pull secrets []
podAnnotations pod annotations {}
podSecurityContext pod securityContext {}
autoscaling.enabled enable auto pods auto scale false
autoscaling.minReplicas minimum replica count 1
autoscaling.maxReplicas maximum replica count 2
autoscaling.targetCPUUtilizationPercentage auto scale cpu threshold 85
autoscaling.targetMemoryUtilizationPercentage auto scale memory threshold 85

Happy Helm with ♥ at hmdmph