Table of Contents
discoveryrule.create
Description
object discoveryrule.create(object/array lldRules)
This method allows to create new LLD rules.
This method is only available to Admin and Super admin user types. Permissions to call the method can be revoked in user role settings. See User roles for more information.
Parameters
(object/array) LLD rules to create.
Additionally to the standard LLD rule properties, the method accepts the following parameters.
| Parameter | Type | Description |
|---|---|---|
| filter | object | LLD rule filter for the LLD rule. |
| preprocessing | array | LLD rule preprocessing options. |
| lld_macro_paths | array | LLD rule lld_macro_path options. |
| overrides | array | LLD rule overrides options. |
Return values
(object) Returns an object containing the IDs of the created LLD rules under the itemids property. The order of the returned IDs matches the order of the passed LLD rules.
Examples
Creating an LLD rule
Create a Zabbix agent LLD rule to discover mounted file systems. Discovered items will be updated every 30 seconds.
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Mounted filesystem discovery",
"key_": "vfs.fs.discovery",
"hostid": "10197",
"type": 0,
"interfaceid": "112",
"delay": "30s"
},
"id": 1
}Response:
Using a filter
Create an LLD rule with a set of conditions to filter the results by. The conditions will be grouped together using the logical "and" operator.
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Filtered LLD rule",
"key_": "lld",
"hostid": "10116",
"type": 0,
"interfaceid": "13",
"delay": "30s",
"filter": {
"evaltype": 1,
"conditions": [
{
"macro": "{#MACRO1}",
"value": "@regex1"
},
{
"macro": "{#MACRO2}",
"value": "@regex2",
"operator": "9"
},
{
"macro": "{#MACRO3}",
"value": "",
"operator": "12"
},
{
"macro": "{#MACRO4}",
"value": "",
"operator": "13"
}
]
}
},
"id": 1
}Response:
Creating an LLD rule with macro paths
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "LLD rule with LLD macro paths",
"key_": "lld",
"hostid": "10116",
"type": 0,
"interfaceid": "13",
"delay": "30s",
"lld_macro_paths": [
{
"lld_macro": "{#MACRO1}",
"path": "$.path.1"
},
{
"lld_macro": "{#MACRO2}",
"path": "$.path.2"
}
]
},
"id": 1
}Response:
Using a custom expression filter
Create an LLD rule with a filter that will use a custom expression to evaluate the conditions. The LLD rule must only discover objects the "{#MACRO1}" macro value of which matches both regular expression "regex1" and "regex2", and the value of "{#MACRO2}" matches either "regex3" or "regex4". The formula IDs "A", "B", "C" and "D" have been chosen arbitrarily.
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Filtered LLD rule",
"key_": "lld",
"hostid": "10116",
"type": 0,
"interfaceid": "13",
"delay": "30s",
"filter": {
"evaltype": 3,
"formula": "(A and B) and (C or D)",
"conditions": [
{
"macro": "{#MACRO1}",
"value": "@regex1",
"formulaid": "A"
},
{
"macro": "{#MACRO1}",
"value": "@regex2",
"formulaid": "B"
},
{
"macro": "{#MACRO2}",
"value": "@regex3",
"formulaid": "C"
},
{
"macro": "{#MACRO2}",
"value": "@regex4",
"formulaid": "D"
}
]
}
},
"id": 1
}Response:
Using custom query fields and headers
Create LLD rule with custom query fields and headers.
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"hostid": "10257",
"interfaceid": "5",
"type": 19,
"name": "API HTTP agent",
"key_": "api_discovery_rule",
"value_type": 3,
"delay": "5s",
"url": "http://127.0.0.1?discoverer.php",
"query_fields": [
{
"mode": "json"
},
{
"elements": "2"
}
],
"headers": {
"X-Type": "api",
"Authorization": "Bearer mF_A.B5f-2.1JcM"
},
"allow_traps": 1,
"trapper_hosts": "127.0.0.1"
},
"id": 1
}Response:
Creating an LLD rule with preprocessing
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Discovery rule with preprocessing",
"key_": "lld.with.preprocessing",
"hostid": "10001",
"ruleid": "27665",
"type": 0,
"value_type": 3,
"delay": "60s",
"interfaceid": "1155",
"preprocessing": [
{
"type": 20,
"params": "20",
"error_handler": 0,
"error_handler_params": ""
}
]
},
"id": 1
}Response:
Creating an LLD rule with overrides
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Discover database host",
"key_": "lld.with.overrides",
"hostid": "10001",
"type": 0,
"value_type": 3,
"delay": "60s",
"interfaceid": "1155",
"overrides": [
{
"name": "Discover MySQL host",
"step": "1",
"stop": "1",
"filter": {
"evaltype": "2",
"conditions": [
{
"macro": "{#UNIT.NAME}",
"operator": "8",
"value": "^mysqld\\.service$"
},
{
"macro": "{#UNIT.NAME}",
"operator": "8",
"value": "^mariadb\\.service$"
}
]
},
"operations": [
{
"operationobject": "3",
"operator": "2",
"value": "Database host",
"opstatus": {
"status": "0"
},
"optemplate": [
{
"templateid": "10170"
}
],
"optag": [
{
"tag": "Database",
"value": "MySQL"
}
]
}
]
},
{
"name": "Discover PostgreSQL host",
"step": "2",
"stop": "1",
"filter": {
"evaltype": "0",
"conditions": [
{
"macro": "{#UNIT.NAME}",
"operator": "8",
"value": "^postgresql\\.service$"
}
]
},
"operations": [
{
"operationobject": "3",
"operator": "2",
"value": "Database host",
"opstatus": {
"status": "0"
},
"optemplate": [
{
"templateid": "10263"
}
],
"optag": [
{
"tag": "Database",
"value": "PostgreSQL"
}
]
}
]
}
]
},
"id": 1
}Response:
Create script LLD rule
Create a simple data collection using a script LLD rule.
{
"jsonrpc": "2.0",
"method": "discoveryrule.create",
"params": {
"name": "Script example",
"key_": "custom.script.lldrule",
"hostid": "12345",
"type": 21,
"value_type": 4,
"params": "var request = new HttpRequest();\nreturn request.post(\"https://postman-echo.com/post\", JSON.parse(value));",
"parameters": [{
"name": "host",
"value": "{HOST.CONN}"
}],
"timeout": "6s",
"delay": "30s"
},
"id": 1
}Response:
See also
Source
CDiscoveryRule::create() in ui/include/classes/api/services/CDiscoveryRule.php.