# 5 Discovery rules

#### Overview

The list of low-level discovery rules for a template can be accessed
from *Configuration → Templates* and then clicking on Discovery for the
respective template.

The list of low-level discovery rules for a host can be accessed from
*Configuration → Hosts* and then clicking on Discovery for the
respective host.

A list of existing low-level discovery rules is displayed.

![](../../../../../../assets/en/manual/web_interface/lld_rules.png){width="600"}

Displayed data:

|Column|Description|
|------|-----------|
|*Name*|Name of the rule, displayed as a blue link.<br>Clicking on the rule name opens the low-level discovery rule [configuration form](/manual/discovery/low_level_discovery/filesystems#discovery_rule).<br>If the discovery rule belongs to a template, the template name is displayed before the rule name, as a grey link. Clicking on the template link will open the rule list on the template level.|
|*Items*|A link to the list of item prototypes is displayed.<br>The number of existing item prototypes is displayed in grey.|
|*Triggers*|A link to the list of trigger prototypes is displayed.<br>The number of existing trigger prototypes is displayed in grey.|
|*Graphs*|A link to the list of graph prototypes displayed.<br>The number of existing graph prototypes is displayed in grey.|
|*Hosts*|A link to the list of host prototypes displayed.<br>The number of existing host prototypes is displayed in grey.|
|*Key*|The item key used for discovery is displayed.|
|*Interval*|The frequency of performing discovery is displayed.<br>*Note* that discovery can also be performed immediately by pushing the *Check now* button below the list.|
|*Type*|The item type used for discovery is displayed (Zabbix agent, SNMP agent, etc).|
|*Status*|Discovery rule status is displayed - *Enabled*, *Disabled* or *Not supported*. By clicking on the status you can change it - from Enabled to Disabled (and back); from Not supported to Disabled (and back).|
|*Info*|If everything is fine, no icon is displayed in this column. If there are errors, a red square icon with a cross is displayed. Move the mouse over the icon and you will see a tooltip with the error description.|

To configure a new low-level discovery rule, click on the *Create
discovery rule* button in the top right-hand corner.

##### Mass editing options

Buttons below the list offer some mass-editing options:

-   *Enable* - change the low-level discovery rule status to *Enabled*
-   *Disable* - change the low-level discovery rule status to *Disabled*
-   *Check now* - perform discovery based on the discovery rules
    immediately. See [more details](/manual/config/items/check_now).
    Note that when performing discovery immediately, the configuration
    cache is not updated, thus the result will not reflect very recent
    changes to discovery rule configuration
-   *Delete* - delete the low-level discovery rules

To use these options, mark the checkboxes before the respective
discovery rules, then click on the required button.