/etc/nats/nats-server.conf

• https://docs.nats.io/running-a-nats-service/configuration

max_connections

Default nats:alpine

# Client port of 4222 on all interfaces
port: 4222

# HTTP monitoring port
monitor_port: 8222

# This is for clustering multiple servers together.
cluster {
  # It is recommended to set a cluster name
  name: "my_cluster"

  # Route connections to be received on any interface on port 6222
  port: 6222

  # Routes are protected, so need to use them with --routes flag
  # e.g. --routes=nats-route://ruser:T0pS3cr3t@otherdockerhost:6222
  authorization {
    user: ruser
    password: T0pS3cr3t
    timeout: 2
  }

  # Routes are actively solicited and connected to from this server.
  # This Docker image has none by default, but you can pass a
  # flag to the nats-server docker image to create one to an existing server.
  routes = []
}

Websocket

websocket 
{
     port: 8080
     no_tls: true
}

Related

2023/02/27 15:01:21.572654 [INF] Using configuration file: nats-server.conf
too many open files
wss

See also

• nats-server, nats-server.conf, nats-server --help
• NATS Messaging, installation, Install NATS using docker, nats server check, nats-server.conf, nats.ws, 4222, Synadia, Synadia Cloud, NATS JetStream, Terraform provider, Leaf Nodes