Collects Linux user metrics from utmp
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This project will no longer be maintained by Intel. Intel will not provide or guarantee development of or support for this project, including but not limited to, maintenance, bug fixes, new releases or updates. Patches to this project are no longer accepted by Intel. If you have an ongoing need to use this project, are interested in independently developing it, or would like to maintain patches for the community, please create your own fork of the project.

snap collector plugin - users

This plugin has ability to gather the number of logged-in users. Though this type of information can be obtained from various files in the Linux system but in this plugin there is a command line utility 'who' to get the list of user logged in the system.

The plugin is used in the [snap framework] (

  1. Getting Started
  1. Documentation
  1. Community Support
  2. Contributing
  3. License
  4. Acknowledgements

Getting Started

System Requirements

  • Linux system with available who tool at /usr/bin/who

Operating systems

All OSs currently supported by snap:

  • Linux/amd64


Download the plugin binary:

You can get the pre-built binaries for your OS and architecture at plugins's GitHub Releases page. Download the plugins package from the latest release, unzip and store in a path you want snaptel to access.

To build the plugin binary:


Clone repo into $GOPATH/src/

$ git clone<yourGithubID>/snap-plugin-collector-users.git

Build the snap users plugin by running make within the cloned repo:

$ make

This builds the plugin in ./build/

Configuration and Usage


Collected Metrics

This plugin has the ability to gather the following metrics:

Metric Namespace Data Type Description
/intel/utmp/users/logged uint64 A number of users logged-in
/intel/utmp/users/logged_min uint64 A minimum number of logged-in users(*)
/intel/utmp/users/logged_max uint64 A maximum number of logged-in users(*)
/intel/utmp/users/logged_avg float64 An average number of logged-in users(*)

(*) since the task was started By default metrics are gathered once per second.


Example of running snap users collector and writing data to file.

Ensure snap daemon is running:

  • initd: sudo service snap-telemetry start
  • systemd: sudo systemctl start snap-telemetry
  • command line: sudo snapteld -l 1 -t 0 &

Download and load snap plugins:

$ wget
$ wget
$ snaptel plugin load snap-plugin-collector-users
$ snaptel plugin load snap-plugin-publisher-file

See available metrics for your system

$ snaptel metric list

Create a task manifest file to use snap-plugin-collector-users plugin (exemplary file in [examples/tasks/] (

    "version": 1,
    "schedule": {
        "type": "simple",
        "interval": "1s"
    "workflow": {
        "collect": {
            "metrics": {
                "/intel/utmp/users/logged": {},
                "/intel/utmp/users/logged_avg": {},
                "/intel/utmp/users/logged_max": {},
                "/intel/utmp/users/logged_min": {}
            "config": {
            "process": null,
            "publish": [
                    "plugin_name": "file",
                    "config": {
                        "file": "/tmp/published_users"

Create a task:

$ snaptel task create -t users-file.json
Using task manifest to create task
Task created
ID: b0ba4a9c-9011-4117-bd25-803b732f8e5b
Name: Task-b0ba4a9c-9011-4117-bd25-803b732f8e5b
State: Running

See sample output from snaptel task watch <task_id>

$ snaptel task watch  b0ba4a9c-9011-4117-bd25-803b732f8e5b
Watching Task (b0ba4a9c-9011-4117-bd25-803b732f8e5b):
NAMESPACE                           DATA    TIMESTAMP                                   SOURCE
/intel/utmp/users/logged            6       2016-01-12 05:33:43.275317916 -0500 EST     gklab-108-166
/intel/utmp/users/logged_avg        5.48    2016-01-12 05:33:43.275317101 -0500 EST     gklab-108-166
/intel/utmp/users/logged_max        6       2016-01-12 05:33:43.275317675 -0500 EST     gklab-108-166
/intel/utmp/users/logged_min        5       2016-01-12 05:33:43.275317794 -0500 EST     gklab-108-166

(Keys ctrl+c terminate task watcher)

These data are published to file and stored there (in this example in /tmp/published_users).

Stop previously created task:

$ snaptel task stop b0ba4a9c-9011-4117-bd25-803b732f8e5b
Task stopped:
ID: b0ba4a9c-9011-4117-bd25-803b732f8e5b


There isn't a current roadmap for this plugin, but it is in active development. As we launch this plugin, we do not have any outstanding requirements for the next release.

If you have a feature request, please add it as an issue and/or submit a pull request.

Community Support

This repository is one of many plugins in Snap, a powerful telemetry framework. See the full project at To reach out to other users, head to the main framework or visit Slack.


We love contributions!

There's more than one way to give back, from examples to blogs to code updates. See our recommended process in

And thank you! Your contribution, through code and participation, is incredibly important to us.


Snap, along with this plugin, is an Open Source software released under the Apache 2.0 License.