Your config.json should look like this for multiple ports
{
"url": "http://example.org",
"secret": "your-secret-goes-here",
"database": "mongo",
"port": [4567, 4568, 4569],
"mongo": {
"host": "127.0.0.1",
"port": "27017",
"database": "0"
},
"redis": {
"host":"127.0.0.1",
"port":"6379",
"database": 0
}
}
After ./nodebb setup modify config.json remove port from url and add the port array. Then use ./nodebb start to start nodebb. It should start up 3 nodejs processes, you can check if it worked with top