55 lines
2.0 KiB
Markdown
55 lines
2.0 KiB
Markdown
---
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layout: "docs"
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page_title: "Consul Servers Outside of Kubernetes - Kubernetes"
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sidebar_current: "docs-platform-k8s-run-servers-outside"
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description: |-
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Running Consul servers outside of Kubernetes
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---
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# Consul Servers Outside of Kubernetes
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If you have a Consul cluster already running, you can configure your
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Consul clients inside Kubernetes to join this existing cluster.
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The below `config.yaml` file shows how to configure the Helm chart to install
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Consul clients that will join an existing cluster.
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The `global.enabled` value first disables all chart components by default
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so that each component is opt-in. This allows us to _only_ setup the client
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agents. We then opt-in to the client agents by setting `client.enabled` to
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`true`.
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Next, `client.exposeGossipPorts` can be set to `true` or `false` depending on if
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you want the clients to be exposed on the Kubernetes internal node IPs (`true`) or
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their pod IPs (`false`).
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Finally, `client.join` is set to an array of valid
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[`-retry-join` values](/docs/agent/options.html#retry-join). In the
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example above, a fake [cloud auto-join](/docs/agent/cloud-auto-join.html)
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value is specified. This should be set to resolve to the proper addresses of
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your existing Consul cluster.
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```yaml
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# config.yaml
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global:
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enabled: false
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client:
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enabled: true
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# Set this to true to expose the Consul clients using the Kubernetes node
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# IPs. If false, the pod IPs must be routable from the external servers.
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exposeGossipPorts: true
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join:
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- "provider=my-cloud config=val ..."
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```
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-> **Networking:** Note that for the Kubernetes nodes to join an existing
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cluster, the nodes (and specifically the agent pods) must be able to connect
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to all other server and client agents inside and _outside_ of Kubernetes over [LAN](https://www.consul.io/docs/glossary.html#lan-gossip).
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If this isn't possible, consider running a separate Consul cluster inside Kubernetes
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and federating it with your cluster outside Kubernetes.
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You may also consider adopting Consul Enterprise for
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[network segments](/docs/enterprise/network-segments/index.html).
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