Samba

Plugin: python.d.plugin Module: samba

Overview

This collector monitors the performance metrics of Samba file sharing.

It is using the smbstatus command-line tool.

Executed commands:

• sudo -n smbstatus -P

This collector is supported on all platforms.

This collector only supports collecting metrics from a single instance of this integration.

smbstatus is used, which can only be executed by root. It uses sudo and assumes that it is configured such that the netdata user can execute smbstatus as root without a password.

Default Behavior

Auto-Detection

After all the permissions are satisfied, the smbstatus -P binary is executed.

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per Samba instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

Metric	Dimensions	Unit
syscall.rw	sendfile, recvfile	KiB/s
smb2.rw	readout, writein, readin, writeout	KiB/s
smb2.create_close	create, close	operations/s
smb2.get_set_info	getinfo, setinfo	operations/s
smb2.find	find	operations/s
smb2.notify	notify	operations/s
smb2.sm_counters	tcon, negprot, tdis, cancel, logoff, flush, lock, keepalive, break, sessetup	count

Alerts

There are no alerts configured by default for this integration.

Setup

Prerequisites

Enable the samba collector

The samba collector is disabled by default. To enable it, use edit-config from the Netdata config directory, which is typically at /etc/netdata, to edit the python.d.conf file.

cd /etc/netdata   # Replace this path with your Netdata config directory, if different
sudo ./edit-config python.d.conf

Change the value of the samba setting to yes. Save the file and restart the Netdata Agent with sudo systemctl restart netdata, or the appropriate method for your system.

Permissions and programs

To run the collector you need:

• smbstatus program
• sudo program
• smbd must be compiled with profiling enabled
• smbd must be started either with the -P 1 option or inside smb.conf using smbd profiling level

The module uses smbstatus, which can only be executed by root. It uses sudo and assumes that it is configured such that the netdata user can execute smbstatus as root without a password.

• add to your /etc/sudoers file:

  which smbstatus shows the full path to the binary.

  netdata ALL=(root)       NOPASSWD: /path/to/smbstatus

• Reset Netdata's systemd unit CapabilityBoundingSet (Linux distributions with systemd)

  The default CapabilityBoundingSet doesn't allow using sudo, and is quite strict in general. Resetting is not optimal, but a next-best solution given the inability to execute smbstatus using sudo.

As the root user, do the following:

mkdir /etc/systemd/system/netdata.service.d
echo -e '[Service]\nCapabilityBoundingSet=~' | tee /etc/systemd/system/netdata.service.d/unset-capability-bounding-set.conf
systemctl daemon-reload
systemctl restart netdata.service

Configuration

File

The configuration file name for this integration is python.d/samba.conf.

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config python.d/samba.conf

Options

There are 2 sections:

• Global variables
• One or more JOBS that can define multiple different instances to monitor.

The following options can be defined globally: priority, penalty, autodetection_retry, update_every, but can also be defined per JOB to override the global values.

Additionally, the following collapsed table contains all the options that can be configured inside a JOB definition.

Every configuration JOB starts with a job_name value which will appear in the dashboard, unless a name parameter is specified.

Config options

Name	Description	Default	Required
update_every	Sets the default data collection frequency.	5	no
priority	Controls the order of charts at the netdata dashboard.	60000	no
autodetection_retry	Sets the job re-check interval in seconds.	0	no
penalty	Indicates whether to apply penalty to update_every in case of failures.	yes	no

Examples

Basic

A basic example configuration.

Config

my_job_name:
  name: my_name
  update_every: 1

Troubleshooting

Debug Mode

To troubleshoot issues with the samba collector, run the python.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

• Navigate to the plugins.d directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the plugins setting under [directories].

  cd /usr/libexec/netdata/plugins.d/

• Switch to the netdata user.

  sudo -u netdata -s

• Run the python.d.plugin to debug the collector:

  ./python.d.plugin samba debug trace