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What are Assets Discovery patterns?
Assets Discovery uses Patterns to identify different devices and configuration items that it discovers on your local network. Once Assets Discovery finds a device or configuration item that matches a specific pattern, it creates an object in Assets in Jira Service Management that represents the asset.
A Pattern is an XML file that contains detailed information about how a device or configuration item might appear to the scanner.
Pattern Structure
A pattern contains the following nodes:
Node | Req’d? | Description |
|---|---|---|
<Version> | N | A version string for the pattern |
<PatternID> | Y | A unique string for each pattern |
<AlternativePattern> | Y | A pattern that will be used instead of that one (e.g. used for PowerShell). |
<ProcessType> | Y | Describes which type of execution will be proceed by the Discovery-Tool to collect information. All possible Process Types are listed down below. |
<PatternType> | Y | Describes for which type of Discovery-Object the pattern is responsible. All possible Pattern Types are listed down below. |
<OrderNr> | Y | It is possible to have multiple Pattern for one Discovery-Object, the order number is used to set in which order the Pattern are executed. (For example you can see in the pattern folder 3 Pattern for Linux Network Interface) |
<Command> | N | Contains the Command that will be executed on the Remote-System. The command depends on the Process Type examples are listed down below: |
<Processing> | Y | Contains the C# SourceCode to processing result data to Discovery-Objects. For more details see Creating Custom Pattern |
<IgnoreCommandCache> | N | If set to true, the CommandProvider will not observe the cache. Per default a command result will be stored in the cache and the result of the same command will be read from the cache. The cache is just persistent for a scan session. |
<RegValue> | N | The Registry Variable that would be read in combination with the Command used by WMIRegValue. |
<ApplicationName> | N | The name of the application that is used to collect extended information for |
<ContextName> | N | Optional SNMP Walk context name |
<WMINamespace> | N | define an alternative WMI Namespace for the initial command |
Pattern Process Types
There are several different types of processes that might be executed when a pattern is run.
Type | Example Command | Command Result Type | Description |
|---|---|---|---|
SSHExecute | ifconfig -a | Executes a SSH Command on a connected Remote Unix System | |
WMIQuery | SELECT * FROM Win32_OperatingSystem | Executes a WMI Query on a connected Remote Windows System | |
WMIExecute | netstat -an | Executes a Command on a connected Remote Windows System | |
WMIRegValue | <![CDATA[ | The result object can any type of a registry value | By WMIRegValue the Command contains the Registry Path and reads the Value described in the <RegValue> Node of the Pattern. The "Root" is set by default to "HKEY_LOCAL_MACHINE\" and should not included in the command. The Result is an object containing all Variations of an Registry Variable. |
WMIRegValueList | <![CDATA[ | <string> | By WMIRegValueList the Command contains the Registry Path and returning the "subKeys" of the Registry Path. The "Root" is set by default to "HKEY_LOCAL_MACHINE\" and should not included in the command. |
PowerShellExecute | Get-WmiObject win32_computersystem | Executes a PowerShell-Command on a connected Remote Windows System | |
SNMP_GET | 1.3.6.1.4.1.2021.4.5.0;1.3.6.1.4.1.2021.4.6.0 | ExtendedInformation is an object with two attributes: | Executes a SNMP GET Command for the given MIB's. Returning a List of ExtendedInformation, a ExtendedInformation containing the Name (the MIB) and the Value of the MIB. |
SNMP_WALK | 1.3.6.1.2.1.2.2.1.2;1.3.6.1.2.1.4.20.1.2 | ExtendedInformation is an object with two attributes: | Executes a SNMP WALK Command for the given MIB's. Returning a List of ExtendedInformation, a ExtendedInformation containing the Name (the MIB) and the Value of the MIB. |
Command Result types
Starting with Discovery v.3, every Pattern Process Type has a Command Result implementation.
Process Type | Command Result Type |
|---|---|
WMIQuery | WMIQueryResult |
WMIRegValue | WMIRegValueResult |
WMIRegValueList | WMIRegValueListResult |
WMIExecute | WMIExecuteResult |
PowerShellExecute | PowerShellExecuteResult |
SSHExecute | SSHExecuteResult |
SNMP_GET | SNMPExecuteResult |
SNMP_WALK | SNMPExecuteResult |
VIMObject | VIMCommandResult |
Pattern Types
The pattern type defines which type of Discovery-Object are returning as result from the processing.
The result of Discovery-Objects will be merged. For example in the Discovery/pattern folder you can see multiple HostInfo pattern, they are all collecting partial results of a host and the Discovery-Tool merging the Attributes together.
Type | Example pattern | Description |
|---|---|---|
Host | Linux_Hostinfo_Hostname.pat Windows_Hostinfo_Hostname_Model.pat | Processing collected data for a Host. The pattern function (PerformAction) processing a HostInfo-Object. |
Device | SNMP_Deviceinfo_Default.pat | Processing collected data for a Host or a Device. The pattern function (PerformAction) processing a DeviceInfo-Object. |
Network | Linux_NetworkInterfaces.pat Windows_NetworkInterfaces.pat | Processing collected data for NetworkInterfaces. The pattern function (PerformAction) processing the NetworkInterface-Objects of the parent system. |
CPU | Linux_CPUs.pat Windows_CPUs.pat | Processing collected data for CPUs. The pattern function (PerformAction) processing the CPUInfo-Objects of the parent system. |
OS | Linux_OS.pat Windows_OS.pat | Processing collected data for OS. The pattern function (PerformAction) processing the OSInfo-Objects of the parent system. |
FileSystem | Linux_FileSystem.pat Windows_FileSystem.pat | Processing collected data for FileSystems. The pattern function (PerformAction) processing the FileSystemInfo-Objects of the parent system. |
Application | Linux_Application_RPM.pat Windows_Application_Product.pat | Processing collected data for Applications. The pattern function (PerformAction) returning a list of ApplicationInfo-Objectsof the parent system. |
Patch | Windows_Patches.pat | Processing collected data for Patches. The pattern function (PerformAction) processing the PatchInfo-Objects of the parent system. |
ApplicationService | Windows_ApplicationServices.pat | Processing collected data for ApplicationServices. The pattern function (PerformAction) processing the ApplicationServiceInfo-Objects of the parent system. |
OSProductKey | Windows_ProductKey.pat | Processing collected data for License. The pattern function (PerformAction) processing the License for the Operating-System |
ApplicationProductKey | Processing collected data for License. The pattern function (PerformAction) processing the License for the Applications of the parent system. | |
User | Linux_User.pat | Processing collected data for User. The pattern function (PerformAction) processing the User of the parent system. |
Group | Linux_Group.pat | Processing collected data for Groups. The pattern function (PerformAction) processing the Groups of the parent system. |
ConnectedPeripherie | Windows_Peripherie_USB_Storage.pat | Processing collected data for Extended Informations. The pattern function (PerformAction) processing the ExtendedInformation-Objects of the parent system. |
SNMPExtendedValues | SNMP_Deviceinfo_ExtExampleRAM.pat | Processing collected data for Extended Informations. The pattern function (PerformAction) processing the ExtendedInformation-Objects of the parent system. |
ConnectedPeripherie | Windows_Peripherie_USB_Storage.pat | Processing collected data for Connected Devices of the parent system. |
HostinfoList | Windows_VBox_VMs.pat Linux_VBox_VMs.pat | Processing collected data for a lis of Virtual Guests The patten function (PerformAction) processing the Host-Objects (like virtual guest machines) of the parent system. |
PostProcessing | Post Processing pattern will be executed after all the pattern types and can be used to add or modify host/device information The pattern function (PerformAction) returning a HostInfo- or a DeviceInfo-Object. |
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