nmo.commands.isonline(url, [url], ...) nmo.commands.isonline(cluster,...)
Check if nodes are online / available on the current network.
url: The command takes multiple url arguments for checking multiple nodes at once. The url must be a String. The last argument must be an Object providing options.
cluster: The command looks up the nodes defined in the config file for a given cluster and will check whether is node is online
The command returns a promise which will return an Object where the keys are the provided urls and the values have the type Boolean. true indicates an online, available node.