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Another benefit of Helm is in it's package management. If your application requires another team's application up and running, they can publish their Helm chart to a remote repository like a ChartMuseum. You can then install their application into your Kubernetes by naming that remote chart combined with a local values file. E.g., helm install other-teams-app https://charts.mycompany.com/other-teams-app-1.2.3.tgz -f values-other-teams-app.yaml. This is convenient because it means you don't have to checkout their project and dig through it for their helm charts to get up and running - all you need to supply is your own values file.
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The imagePullPolicy must be set to Never or IfNotPresent. It cannot be set to Always otherwise Kubernetes will attempt to pull the image from a remote registry like Docker Hub, and it would fail.
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Chances are the application's service might be a ClusterIP or LoadBalancer type when deployed to other Kubernetes clusters, or that the nodePort will have a different value in those clusters. You can get around this by templating your service definition in Helm, and having different service configurations for your local Kubernetes versus other Kubernetes clusters.
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