Configuration

In this section, we will go through the configuration of Faast.

apiVersion: lambdo.io/v1alpha1
kind: Config
api:
  # The host on which the API server will listen
  web_host: 0.0.0.0
  # The port on which the API server will listen
  web_port: 3000
  # The host on which the gRPC server will listen
  grpc_host: 0.0.0.0
  # The port on which the gRPC server will listen
  gprc_port: 50051
  # Bridge name
  bridge: lambdo0
  # The IP address of the bridge
  ip: 10.0.50.0/8
vmm:
  # The kernel path to use for the vmm
  kernel: /var/lib/lambdo/kernel/vmlinux.bin
agent: # NOT IMPLEMENTED
  # The path to the agent binary
  path: /usr/local/bin/lambdo-agent
  # The path to the agent configuration file
  config: /etc/lambdo/agent.yaml
languages:
  # The name of the language runtime
  - name: NODE
    # The version of the node runtime
    version: 12
    # The initramfs to use for the runtime
    initramfs: /var/lib/lambdo/initramfs/node-12.img
    # The steps to run the code
    steps:
      - name: Run the code
        command: /usr/local/bin/node {{filename}}
        # The output configuration
        output:
          # Whether to enable the output
          enabled: true
          # Whether to enable debug output (useful for build steps)
          debug: false

API Configuration

The provided configuration file is structured to define various operational parameters for Faast. Here's an insightful breakdown of the configuration

Web Host and Port

web_host: 0.0.0.0 and web_port: 3000 specify the host IP and port for the API server, enabling it to listen for incoming HTTP requests on all available network interfaces at port 3000.

gRPC Host and Port

grpc_host: 0.0.0.0 and gprc_port: 50051 set the host IP and port for the gRPC server, facilitating it to listen for gRPC requests on all available network interfaces at port 50051.

Bridge Configuration

bridge: lambdo0 and ip: 10.0.50.0/8 designate the name and IP address for the network bridge, which is instrumental in network communications within the Faast ecosystem.

VMM (Virtual Machine Monitor) Configuration

kernel: /var/lib/lambdo/kernel/vmlinux.bin stipulates the path to the Linux kernel binary that will be utilized by the VMM.

Language Runtime Configuration

The configuration for a Node.js runtime is specified with a name name: NODE, version version: 12, and the path to the respective initramfs initramfs: /var/lib/lambdo/initramfs/node-12.img.