dope-system-metrics

Open source sensors for Linux.

Open bash terminal:

npm install dope-system-metrics

Create file sensors.js

const Sensor = require('dope-system-metrics');
var   sensor = new Sensor({ delta:2000, rootPath:'system'});
sensor.on(sensor.events.DATA,(data) => {
    data.map((row) => {
         // write result to standard output
         process.stdout.write(row.name + ' ' + row.value + ' ' + row.time  + "\n");
    });
});
// Uncomment desired method:
// sensor.runOnce();
// sensor.runOnceDelta();
// sensor.runForever();

Available methods:

• runOnce (outputs data that does not represent deviation):

const Sensor = require('dope-system-metrics');
var   sensor = new Sensor();
      sensor.on(sensor.events.DATA,console.log);
      sensor.runOnce();

• runOnceDelta (ouputs data end exits on first iteration):

const Sensor = require('dope-system-metrics');
var   sensor = new Sensor();
      sensor.on(sensor.events.DATA,console.log);
      sensor.runOnceDelta();

• runForever (constantly ouputs data):

const Sensor = require('dope-system-metrics');
var   sensor = new Sensor();
      sensor.on(sensor.events.DATA,console.log);
      sensor.runForever();

Options:

• rootPath: first part of the name ( before first '.')
• host: name of the host ( default is HOSTNAME environment variable ).
• delta: time im milliseconds to check for deviation ( default is 2 sec. ).
• timeServer: ( timeserver to check time against ).
• timeServerCheckInterval: ( interval to perform the check in seconds. default is 12 hours ).
• precision: ( precision of metric value. default is 2).

Execute:

• As standalone linux app.

dope-sys-monitor

• In graphite compatibility mode.

dope-sys-metrics

Metrics.

• arp.*: (*ip as integer) Sends ipv4 (int) as metric name and mac addr as integer.
• cpu*.clock: (*cpu number) Current Cpu clock speed.
• cpu*.idle: (*cpu number) Current Cpu idle.
• cpu*.nice: (*cpu number) Current Cpu nice.
• cpu*.system: (*cpu number) Current Cpu system load.
• cpu*.user: (*cpu number) Current Cpu user load.
• cpu.idle: Total Cpu idle.
• cpu.nice: Total Cpu nice.
• cpu.system: Total Cpu system load.
• cpu.user: Total cpu user load.
• disk.*.usage.free: (*disk name) Current disk free space.
• disk.*.usage.percent: (*disk name) Current disk free space as percents.
• disk.*.usage.used: (*disk name) Current disk used space.
• disk.*.writespeed: (*disk name) Current disk writespeed.
• mem.free: System memory free.
• mem.used: System memory used.
• net.*.rx: (*interface) Current interface receive speed.
• net.*.tx: (*interface) Current interface trasmit speed.
• net.tcp.close:
• net.tcp.close_wait:
• net.tcp.closing:
• net.tcp.established:
• net.tcp.fin_wait1:
• net.tcp.fin_wait2:
• net.tcp.last_ack:
• net.tcp.listen:
• net.tcp.syn_recv:
• net.tcp.syn_sent:
• net.tcp.time_wait:
• openedfilehandlers: Opened file handlers by kernel.
• ping.gateway: Ping to the gateway.
• prc.*.instances: (*process name) Current process. Number of instances.
• procs.blocked: Processes blocked on CPU.
• procs.running: Processes running on CPU.
• procstotal: Total processes.
• procszombie: Number of zombie processes.
• random.entropy: Available entropy.
• random.pool: Randomness pool size.
• service.*.80: (*service name) Current service. Used port.
• terminals: Number of terminals opened.
• threads: Number of threads.
• uptime.boot: Uptime ( since boot ).
• uptime.load: System load ( returned by uptime command )
• users.*.numprocs: (*user's name) Number of processes per user.
• time.sync: Time diff. of current machine, compared to remote server.
• watcher: System file ( by default: kernel's log ) watcher ( displays changes, a.k.a. new lines ).