How to support node selection when using helm install - kubernetes-helm

Question

Using helm 2.7.3. New to helm and kubernetes. I have two worker nodes, and I want to deploy to a specific node. I've assigned unique labels to each node. I then added nodeSelector to deployment.yaml. When I run helm install it appears to be ignoring the node selection and deploys randomly between the two worker nodes.
Would like to understand the best approach to node selection when deploying with helm.

Answer 1

You can use something like this:
helm install --name elasticsearch elastic/elasticsearch --set \
nodeSelector."beta\\.kubernetes\\.io/os"=linux
Note: Escaping . character! Hope this helps.

Answer 2

See the example:
kubectl label nodes <your desired node> databases=mysql --overwrite
Check the label:
kubectl get nodes --show-labels
Run the following command:
helm create test-chart && cd test-chart
helm install . --set nodeSelector.databases=mysql

Answer 3

in ansible task
- name: install etcd middleware
command:
chdir: /var/lib/kube/controlpanel/component
cmd: "{{tools.helm.path}} upgrade etcd ./etcd --install --namespace=middleware --set replicaCount=3 --set nodeSelector.\"xxx\\.yyy\\.local/node-role-middleware\"="

Answer 4

You can use this one example:
helm upgrade --install airflow apache-airflow/airflow --namespace airflow --create-namespace --set {nodeSelector="your-worker-node-name"}
--set allows setting for required parameters.
The following link provides the supported parameters of the mentioned example:
https://airflow.apache.org/docs/helm-chart/stable/parameters-ref.html#kubernetes
You can set many parameters using many --set. Look at the link:https://helm.sh/docs/helm/helm_install/. This is the example:
helm install --set foo=bar --set foo=newbar myredis ./redis
Just check that the nodeSelector parameter is supported by your chart.