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Version: 2.3.0

Exposing Endpoints

This page provides guidance on exposing endpoints for nodes managed by Cosmopilot. Exposing API endpoints relies on the creation of ingress resources. By default, these ingresses are created for the nginx ingress controller and secured using cert-manager. You can target a different ingress controller by setting the ingressClass field in your manifests.

The only exception is the P2P port, which can be exposed without any ingress controller.

Exposing the P2P Port​

The P2P port can be exposed by configuring the .spec.expose field on a ChainNode or the .spec.nodes[].expose field on a ChainNodeSet. By default, this feature is disabled.

expose:
  p2p: true
  p2pServiceType: LoadBalancer # Optional. Default is `NodePort`.
  annotations: # Optional annotations to add to the P2P service.
    key1: value1
    key2: value2

Supported Service Types​

  • NodePort:
    • Exposes P2P traffic on a NodePort across all Kubernetes nodes.
    • This option is cost-effective as it uses existing Kubernetes node resources, but it requires Kubernetes nodes to have public access.
  • LoadBalancer:
    • On most cloud providers, this creates a dedicated Load Balancer mapped to the node.
    • Offers better performance but incurs higher costs due to the additional infrastructure.

Exposing API Endpoints​

API endpoints can be enabled either:

  1. Per ChainNode: Configure under .spec.ingress on the ChainNode resource.
  2. Per Group of Nodes: Configure under .spec.nodes[].ingress on a ChainNodeSet.
  3. Global Ingress: Configure under .spec.ingresses to target multiple groups of nodes (this is the recommended approach, as per-group ingress configuration might be deprecated in the future).

ChainNode Ingress Example​

To expose API endpoints for a single ChainNode, use the following configuration under .spec.ingress:

ingress:
  host: node.example.com
  enableRPC: true # optional. Defaults to `false`.
  enableGRPC: true # optional. Defaults to `false`.
  enableLCD: true # optional. Defaults to `false`.
  ingressClass: traefik # optional. Defaults to `nginx`.
  disableTLS: false # optional. Defaults to `false`.
  tlsSecretName: node-tls # optional. Defaults to `<service-name>-tls`.

Per Group Ingress Example​

To expose API endpoints for a specific group of nodes within a ChainNodeSet, use the following configuration under .spec.nodes[].ingress:

ingress:
  host: nodes.example.com 
  enableRPC: true # optional. Defaults to `false`.
  enableGRPC: true # optional. Defaults to `false`.
  enableLCD: true # optional. Defaults to `false`.
  enableEvmRPC: false # optional. Defaults to `false`.
  enableEvmRpcWS: false # optional. Defaults to `false`.
  ingressClass: nginx # optional. Defaults to `nginx`.
  annotations: # optional annotations to ingress resource
    nginx.ingress.kubernetes.io/proxy-body-size: "50m"
  disableTLS: false # optional. Defaults to `false`.
  tlsSecretName: example-tls-secret # optional. Defaults to `<service-name>-tls`.

Global Ingress Example​

To expose API endpoints for multiple groups of nodes, configure them under .spec.ingresses. Here’s an example:

ingresses:
  - name: global-ingress
    groups:
      - fullnode
      - archive
    host: api.nodes.example.com
    enableRPC: true # optional. Defaults to `false`.
    enableGRPC: true # optional. Defaults to `false`.
    enableLCD: true # optional. Defaults to `false`.
    enableEvmRPC: true # optional. Defaults to `false`.
    enableEvmRpcWS: true # optional. Defaults to `false`.
    ingressClass: nginx # optional. Defaults to `nginx`.
    annotations: # optional annotations to ingress resource
      nginx.ingress.kubernetes.io/proxy-body-size: "100m"
    disableTLS: false # optional. Defaults to `false`.
    tlsSecretName: global-tls-secret # optional. Defaults to `<service-name>-tls`.

Internal Services Only​

If you only need internal Service resources (for example, when another controller manages ingress creation), set servicesOnly to true on a global ingress:

ingresses:
  - name: internal-only
    groups: [fullnode]
    host: api.nodes.internal
    servicesOnly: true
NOTE

Each API endpoint is exposed as a subdomain of the configured host as follows. These are not configurable.

  • Tendermint RPC is available at rpc.<host>.
  • Cosmos-SDK RPC is available at lcd.<host>.
  • gRPC is available at grpc.<host>.
  • EVM RPC is available at evm-rpc.<host>.
  • EVM RPC Websocket is available at evm-rpc-ws.<host>.

For flexibility and better scalability, it is recommended to use .spec.ingresses to configure API endpoints instead of per-group ingress configurations.