cluster-advisor

Aggregate multiple cadvisor endpoints

install

$ npm install cluster-advisor

usage

var advisor = require('cluster-advisor')

// create a cluster from multiple cadvisor endpoints
var cluster = advisor([
	'192.168.8.120:8085',
	'192.168.8.121:8085',
	'192.168.8.122:8085'
])

// load the stats which contains information about each machine
cluster.stats(function(err, stats){

	// stats is an array each element representing a machine

})

api

var cluster = advisor(serverArray)

Create a cluster from an array of server addresses.

cluster.stats(function(err, arr){})

Map the array of endpoints onto an array container information about each machine.

Each array entry is an object with the following properties:

• backend - the backend address used
• cores - the number of cores the host has
• memorytotal - the total memory capacity of the host
• containers - the number of containers running on the host
• memoryused - the total amount of memory used by containers
• rx_bytes - the total number of bytes received by containers
• tx_bytes - the total number of bytes sent by containers
• load - the total load across all containers

These values are simply the SUM of each of the individual container values

The host property is useful to determining how much free memory is left because it provides these properties:

• num_cores
• memory_capacity

cluster.ps(function(err, arr){})

Aggregate all containers across the cluster into an array of cadvisor info for each container.

Useful to get a running snapshot of the entire cluster.

Each entry in the returned array is an object with the following properties:

• backend - the backend address used
• containers - an array of container data from cadvisor

licence

MIT