Samba monitoring with Netdata

Monitors the performance metrics of Samba file sharing using smbstatus command-line tool.

Executed commands:

• sudo -n smbstatus -P

Requirements

• 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

Charts

1. Syscall R/Ws in kilobytes/s

   • sendfile
   • recvfile

2. Smb2 R/Ws in kilobytes/s

   • readout
   • writein
   • readin
   • writeout

3. Smb2 Create/Close in operations/s

   • create
   • close

4. Smb2 Info in operations/s

   • getinfo
   • setinfo

5. Smb2 Find in operations/s

   • find

6. Smb2 Notify in operations/s

   • notify

7. Smb2 Lesser Ops as counters

   • tcon
   • negprot
   • tdis
   • cancel
   • logoff
   • flush
   • lock
   • keepalive
   • break
   • sessetup

Enable the 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.

Configuration

Edit the python.d/samba.conf configuration file using edit-config from the Netdata config directory, which is typically at /etc/netdata.

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

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