Adding upstream version 1.29.3.upstream/1.29.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+<!--
+title: "systemd-logind monitoring with Netdata"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/python.d.plugin/logind/README.md
+sidebar_label: "systemd-logind"
+-->
+
+# Systemd-Logind monitoring with Netdata
+
+Monitors active sessions, users, and seats tracked by `systemd-logind` or `elogind`.
+
+It provides the following charts:
+
+1.  **Sessions** Tracks the total number of sessions.
+
+    -   Graphical: Local graphical sessions (running X11, or Wayland, or something else).
+    -   Console: Local console sessions.
+    -   Remote: Remote sessions.
+
+2.  **Users** Tracks total number of unique user logins of each type.
+
+    -   Graphical
+    -   Console
+    -   Remote
+
+3.  **Seats** Total number of seats in use.
+
+    -   Seats
+
+## Enable the collector
+
+The `logind` collector is disabled by default. To enable it, use `edit-config` from the Netdata [config
+directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf` file.
+
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d.conf
+```
+
+Change the value of the `logind` setting to `yes`. Save the file and restart the Netdata Agent with `sudo systemctl
+restart netdata`, or the appropriate method for your system, to finish enabling the `logind` collector.
+
+## Configuration
+
+This module needs no configuration. Just make sure the `netdata` user
+can run the `loginctl` command and get a session list without having to
+specify a path.
+
+This will work with any command that can output data in the _exact_
+same format as `loginctl list-sessions --no-legend`.  If you have some
+other command you want to use that outputs data in this format, you can
+specify it using the `command` key like so:
+
+```yaml
+command: '/path/to/other/command'
+```
+
+Edit the `python.d/logind.conf` configuration file using `edit-config` from the Netdata [config
+directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d/logind.conf
+```
+
+## Notes
+
+-   This module's ability to track logins is dependent on what PAM services
+    are configured to register sessions with logind.  In particular, for
+    most systems, it will only track TTY logins, local desktop logins,
+    and logins through remote shell connections.
+
+-   The users chart counts _usernames_ not UID's.  This is potentially
+    important in configurations where multiple users have the same UID.
+
+-   The users chart counts any given user name up to once for _each_ type
+    of login.  So if the same user has a graphical and a console login on a
+    system, they will show up once in the graphical count, and once in the
+    console count.
+
+-   Because the data collection process is rather expensive, this plugin
+    is currently disabled by default, and needs to be explicitly enabled in
+    `/etc/netdata/python.d.conf` before it will run.
+
+---
+
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fcollectors%2Fpython.d.plugin%2Flogind%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)