Multi-Tenant Kubernetes Clusters: Challenges and Useful Tooling

This page summarizes the projects mentioned and recommended in the original post on dev.to

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  • rbac-manager

    A Kubernetes operator that simplifies the management of Role Bindings and Service Accounts.

    While RBAC is not particularly the toughest aspect of multi-tenancy, there are tools to help you with it. RBAC Manager was developed by Fairwinds to make security just a bit easier.

  • dex

    OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors

    Fortunately, there's an open-source tool called Dex that can help you with that. Dex uses OpenID Connect to drive authentication for other apps. This allows you to lean back and take comfort in the knowledge that your tenants can authenticate with their existing provider.

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  • vcluster

    vcluster - Create fully functional virtual Kubernetes clusters - Each vcluster runs inside a namespace of the underlying k8s cluster. It's cheaper than creating separate full-blown clusters and it offers better multi-tenancy and isolation than regular namespaces.

    To get rid of these limitations, you can look into using vcluster. A vcluster is essentially an entire Kubernetes cluster, running inside of a regular namespace on the host cluster, giving you all the advantages of multi-tenancy, with close to none of the cons.

  • prometheus

    The Prometheus monitoring system and time series database.

    Thankfully, there are many tools that can ensure you have a complete overview of what's happening inside your cluster. Undoubtedly the most popular choice is Prometheus, and Prometheus in combination with Grafana can give you incredibly valuable insights.

  • Grafana

    The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.

    Thankfully, there are many tools that can ensure you have a complete overview of what's happening inside your cluster. Undoubtedly the most popular choice is Prometheus, and Prometheus in combination with Grafana can give you incredibly valuable insights.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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