VMmanager includes the monitoring visualization system Grafana. Grafana is used to visualize metrics collected from cluster nodes and virtual machines.

With the Grafana information panels (dashboards) you can:

  • configure the display of metrics as charts and graphs;
  • track changes in metrics over time;
  • configure automatic notifications to messengers. Read more in Grafana. Configuring notifications.

Read more about Grafana in the official documentation .

How to open Grafana interface

Grafana's web interface is available at URL https://domain.com/vm/grafana.

domain.com — IP address or domain name of the server with VMmanager

To enter Grafana's web interface from VMmanager, in the right-hand menu click → Grafana.

VMmanager dashboard

VMmanager creates a dashboard in Grafana with cluster node metrics:

Panel name

Graph name

Metric

Generaluptime

node uptime

load average

average node load

NetworkNetwork traffic

inbound and outbound traffic

DiskIOPS

input/output operations

Root free space

free disk space

MemoryFree

free RAM

CPUUsed

CPU load


Example of a graph in VMmanager dashboard


Node cluster metrics have the name in the format: 1.node.<node_id>.<node_metric>.

<node_id> — cluster node id.

<node_metric> — cluster node metric. Examples of values:

  • cpu — CPU load;
  • df.root.free — free space in the disk root section;
  • hdd.<device>.reads — disk section read IOPS. For example, hdd.sda1.reads;
  • hdd.<device>.writes — disk section write IOPS. For example, hdd.sdb1.writes;
  • la.mid — average node load;
  • mem — free RAM;
  • net.<interface>.rx — inbound traffic. For example, net.vmbr0.rx;
  • net.<interface>.tx — outbound traffic. For example, net.vmbr0.tx;
  • uptime — node uptime.

To monitor the required metrics of cluster nodes and virtual machines, we recommend setting up your own dashboard in Grafana. Read more in Grafana. Configuring a user's dashboard.

Useful tips

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