Pandora: Documentation en: Templates and components
- 1 Templates and Plug Ins
- 1.1 Introduction
- 1.2 Network Components
- 1.3 Local Components
- 1.4 Module Templates
- 1.5 Private Enterprise Number
- 1.6 Wizard components
- 1.7 Component Groups
1 Templates and Plug Ins
Pandora FMS performs all checks through modules allowing you to process different data types Pandora FMS is designed to process. The complete default module list for Pandora FMS can be viewed by clicking on Resources > Module Types.
By clicking on this menu, the available modules will be shown at the right side of Pandora FMS web console.
There are different module types in Pandora FMS:
- async: Asynchrounous data.
- generic: Generic data.
- keep_alive: Special keepalive module, useful to control the status of the last contact with an agent.
- icmp: ICMP check (ping).
- snmp: SNMP check.
- tcp: TCP check.
- web: Network check.
These module types can stock different types of data:
- data: Numerical data.
- proc: Boolean values. ! means true and 0 means false. For example, for web modules it means that if the value exists, it returns 1 and if it does not exist, it returns 0.
- string: Text string.
- inc: Incremental data, e.g. the amount of packets sent by an interface will always grow. They show growth by time unit.
- inc_abs: Absolute incremental data, showing the value increase since the last reading.
1.1.1 What is a component?
A component is a "generic module" which can be repeatedly applied onto an agent, as if it were a module's "master copy", generating a module associated with an agent. That way having a database of your organization's most used components turns out to come in handy when it comes to monitoring, since you have your own components adapted to the technologies you usually use and we simply have to apply these components to the new agents.
There are two types of components. Network components, which group all remote modules (wmi, tcp, snmp, icmp, plugin, web, etc.) and local components, which include the software agent module's definition as "text snippets", ready to be incorporated to the configuration file of the agent (with remote configuration enabled), or they can be cut out and pasted into the agent's configuration manually (without remote configuration).
1.1.2 What is a component template?
Pandora FMS offers the possibility of grouping network components in "templates" so that you may apply multiple network components directly on an agent. This makes it easy to deploy monitoring, as you create several modules simultaneously through the network components associated with a template.
The Recon server applies the network components associated to a template to detected hosts, adding the specified modules automatically and allowing a fast and automatic monitoring deployment.
1.2 Network Components
Network components are elements that enable remote network checks. Pandora FMS has about 40 preconfigured network checks, while the Enterprise Version comes with more than 400.
Pandora FMS network components can be created and viewed on their management page by clicking on Configuration > Network Components.
There you may look for the already existing components (by filtering 'by groups' or by 'free-text search'), see their configurations detail, modify them and create new ones.
To see any module's properties, click on its name, it will take you to its detail page:
As you can see in the picture above, all details of the "Host Alive" network component are shown.
If applied onto a module, it will retrieve the network component details except for the IP address field, where the main IP address of the agent the component is applied to will be automatically adjusted. All parameters may be edited later (e.g. changing the user or password of the WMI modules).
If any template is modified, its new values will only be applied to the modules created from that moment on, not to the the ones already created.
To modify component values, click on the name of one them and modify the desired values, e.g. the interval. Once updated, click on the 'Update' button at the bottom of the page. From that moment on, its the new component configuration will be applied to the agents added by this module.
1.2.1 Creating new Network Components
You may create three types of network components:
- Network components.
- Plug-in components (server addons).
- WMI components.
To create a new network component, go to Administration >Manage Modules and Network Components. Go to the bottom of the page, select a network component within the drop-down menu and click on the "Create" button.
Later, configure all component fields and click on "Create". This is the WMI component creation screen.
As you fill in the required fields, keep in mind that you are filling out the description of a 'generic' module which is going to be applied to different agents. Some parameters such as "snmp community", "user" or "password" may be different according to the agents the module applies later on, so you may leave them empty. If you have a common user policy for your systems, you may leave the modules completely configured by entering users, passwords and other data common to all agents here.
The same process applies to the components of the plugin type.
In this case, similarly to creating a module of the plugin type, when selecting a plugin in the interface, the fields defined in the plugin macros will appear.
1.3 Local Components
Local components are the ones that can be applied to software agents. If you have the Pandora FMS Enterprise Version, these components are applied automatically on agents through policies or manually (one by one) within the agent remote configuration editor. Check the policy section in order to know how to remotely apply a local component to a software agent under Pandora FMS Enterprise.
Local components may also be used within Pandora FMS OpenSource version. However, they will not be applied automatically through Pandora FMS. You must access the agent directly and enter the changes in the configuration file manually. The Pandora FMS Enterprise version has dozens of local modules to apply to the policies and to the agents automatically, sorted out by categories.
Once you go to their management page by clicking on Configuration > Local Components to view them, they work similar to network components.
This screen displays the already existing local modules, which can be filtered by different parameters (group, operating system, free text query). You may also also see, modify and create new components here.
To see any module's properties, click on its name. The link will lead you to its detail page, which is shown below.
As you can see, local component configuration is quite simple. The configuration's elements are described below.
- Name: Component name. This name will be visible when selecting the component to create an agent's module.
- OS: Operating system the component is intended for.
- Group: The group the module belongs to. It is quite useful to filter and assort by monitoring technologies.
- Description: Module description. A default description, which can be modified, is already in there.
- Configuration: The component's configuration like the module's configuration for software agents. For more examples or to get complementary information, check the section named Configuration.
- Warning Status: The interval in which the status changes to "warning". If the box "inverse interval" is checked, the status will change to "warning" if it is not within range of the defined interval.
- Critical Status: Interval in which the status changes to "critical" state. If the box "inverse interval" is checked, the status will change to "critical" if it is not within range of the defined interval.
- Warning Instructions: Instructions to follow if the status changed to "warning".
- Critical Instructions: Instructions to follow if the state changed to "critical".
- Unknown Instructions: Instructions to follow if the state changed to "unknown".
- Category: If you need to group or categorize differently, you may define categories here.
- Tags: You may assign tags here.
- Macros: You may define macros within the execution module (module_exec) or plugin parameters.
1.3.1 Creating new local components
To create a new local component, click on Configuration > Local components and click on the "Create" button which is located at the right bottom of the page.
A page containing the form for creating new local components will be displayed:
Fill out the form with the information given above and click on the "Create" button.
1.3.2 Local execution macros
For Pandora FMS versions 5 and later, it is possible to define macros within local components. These macros are used in the 'module_exec' parameter. They follow the structure of '_field1_, _field2_ ... _fieldN_'.
In the module edition form, macros will appear as normal fields, completely visible for the user.
Each macro has three fields: "Description", "Default Value" and "Help".
- Description: It is the label next to the field in the module form.
- Default Value: An optional value to be loaded by default in the module form field.
- Help: Optional string to add additional information to the field. If defined, a tip will appear next to the field with that string.
If a module component contains macros, the configuration data will be hidden by default to simplify the view:
But it is possible to view and modify them.
1.4 Module Templates
Module templates are templates that contain network check modules. Once created, these templates can be directly applied to agents, avoiding the need to add modules one by one, or apply the templates when carrying out a network recon task.
Click on Configuration > Module Templates to manage the module templates.
The template management window, which contains many default templates, will be displayed:
Click on any of the templates to see their details, or on the trash can icon in the right column to delete it, or on the "create" button to create a new template.
By clicking on the name of a template you will see its details, for example, the screenshot below shows the details for the basic monitoring module template.
Here you can see the name and description of the template in the first two fields of the form.
Below is the list of modules included in this template.
Finally, there is the form for adding modules, being able to filter by module group, and then select the module and add it.
In order to delete a module, select it from the right column (by clicking on the top-right box you will select all) and click on the 'Delete' button.
1.4.1 Creating new module templates
In order to create a new module template, go to the main management page, Configuration > Module templates and click on "Create" at the bottom-right side of the page.
A page containing the creation form for new local components will appear:
Enter the name and description for the new template and click on the "Create" button.
Then you may add modules to the template.
Select the modules at the bottom, filtering them by group if necessary and click on the "Add" button.
Keep in mind that you may delete the unwanted modules by selecting them and clicking on the "Delete" button.
1.4.2 Applying a module template to an agent
In order to apply one of the existing monitoring module templates or a recently created one, click on Monitoring > Views > Agent Detail as shown below.
Select one of the agent's modules:
Once you see this window, click on the "Templates" tab at the top of the page.
On the following picture, modules that already contain an agent and existing module templates are displayed. Select one and apply it to the agent.
Select a template and click on the "Assign" button. The modules contained in this template will be added automatically. Once applied the template, you may delete some of the modules by clicking on the "X" at the right-side column, or you may edit them clicking on the tool icon.
1.5 Private Enterprise Number
All SNMP devices have their own OID, which is exclusive to each device brand and model. There is a number occupying the seventh place within those strings which is the one that gives away which manufacturer it is from. This is the manufacturer's Private Enterprise Number (PEN) and it is registered on IANA. These PEN can be configured in Pandora FMS to use them together with module templates and therefore add dynamic monitoring.
Within that view, it is only necessary to enter the manufacturer's PEN, indicate its name and a brief description. That way, it will be added to the existing list.
In module templates, one or several PEN will be indicated so when there is a discovery task, Pandora FMS is able to retrieve the information about the device's manufacturer and add the appropriate monitoring information.
1.6 Wizard components
Within the capabilities of SNMP and WMI wizards, there is a type of remote components called Wizard components.
These components allow to set a base configuration for the modules that will be generated in the agents when executing any of the wizards (SNMP or WMI). Besides, it will offer the possibility of generating several modules dynamically through only one component. For example, a component to scan device storage units or processes in execution.
These components can be created from the menu Configuration > Templates > Remote components, with the option Create a new wizard component.
In the creation form, you will see some fields common to both wizards and others specific to the selected protocol.
The common fields are:
- Enabled: By activating this token, you will be indicating that the component will try to scan when the wizard is launched.
- Add by default: It allows to choose whether the modules generated by the component will be mchecked to be added by default when launching the wizard. That means that if the token is activated, the modules generated by the component will be checked by default in a view that you will find later and they will be added to the agent. This action does not mean that it cannot be modified, so in this view you can make modifications and uncheck or check at will and change thresholds, descriptions, etc.
- Module name: Name that the component will have and default name for the modules generated by it. It will be possible to use some macros. (They will be shown later on).
- Module protocol: It allows to indicate the wizard (SNMP or WMI) for which the component is configured. According to the selected protocol, the form shows the specific fields for each wizard, which are explained later.
- Component group: Group to which the component will belong. It allows to organize the way the modules will be presented.
- Module type: In this drop-down list, you can choose the type of data that the modules generated by the component will obtain.
- Module unit: Unit of the data obtained by the modules generated by the component. It is a totally editable field, so you can add the measure needed.
- Warning status: In this section you can set a threshold by default for the warning status of the wizard-generated modules. Although here a range is indicated, there will be the possibility of customizing it for each module in the final view that collects all the found modules.
- Critical status: In this section, you may set a default threshold for the critical status of the wizard-generated modules. Although there is a range in here, you may customize it for each module in the final view that collects all the found modules.
- Description: This is a description that will have the component and at the same time, the modules it generated. You will be able to use some macros. (They will be shown later on).
- Scan type: It allows to choose between two scanning modes that can be performed by wizards with this component. This field determines whether a component will generate one module or several. The selected value will affect how other specific fields of each wizard must be filled.
- Fixed: The component will only generate one module. For example, get the uptime of the device by SNMP.
- Dynamic: The component could generate one or more modules. For example, to obtain the percentage of disk unit usage by WMI.
- Execution type: This field indicates the execution type for component-generated modules. It is useful to determine the Pandora FMS server the modules will belong to when created depending on where the wizard is launched from.
- Network: The modules generated by the component will get their data with Pandora FMS own system for SNMP and WMI modules. These are, network, WMI and satellite servers.
- Plugin: The modules generated by the component will obtain their data from the execution of commands, plugins or customized scripts. Thus, they will be executed by the plugin or satellite servers through exec modules.
The specific fields SNMP wizard components are:
- Name OID: It allows to indicate an OID from which a value will be obtained that could be added to the module name through a macro.
It is especially useful when you get multiple modules generated by a dynamic component. That way they get different names by default. But it is not limited to dynamic components, since it can be used also for fixed scanning components.
The value of this OID is stored in the macro _nameOID_, that can be used in the 'Module name field.
If used in dynamic components, the OID indicated in this field should be a branch of SNMP and not a final OID. For example, if the OID .188.8.131.52.4.1.2021.10.1.2 is indicated, the values that the macro will have in each module will be obtained from the OIDs .184.108.40.206.4.1.2021.10.1.2.x, where x represents each of the terminations that the branch may have.
If used on fixed components, the OID indicated in this field must be a final OID. For example, if the OID .220.127.116.11.18.104.22.168 is indicated, the value the macro will have in the module will be retrieved directly from that OID.
- Manufacturer ID: It allows to indicate the ID of a specific manufacturer for which the SNMP wizard component will take effect.
That way, for all devices against which the wizard is launched, and whose Private Enterprise Number (PEN) is registered in Pandora FMS for the manufacturer ID assigned to the component, it will be tried to obtain the modules it generates. For example, a component assigned to general_snmp will be scanned for all devices with PEN 2021 and 8072.
If you indicate as manufacturer All, the component will be scanned for any PEN registered in Pandora.
The Private Enterprise Number (PEN) must be registered in Pandora FMS console to use Manufacturer ID
When the execution type is Network:
- Value OID: It allows to indicate the OID from which the component-generated module data will be obtained.
If used in dynamic components, the OID indicated in this field should be a branch of SNMP and not a final OID. For example, if the OID .22.214.171.124.4.1.2021.10.1.3 is indicated, the values that the modules will have will be obtained from the OIDs .126.96.36.199.4.1.2021.10.1.3.x. In addition, the X node of each OID must have the same value for the X node of the Name OID field if used.
If used in fixed components, the OID indicated in this field must be a final OID. For example, if the OID .188.8.131.52.4.1.2021.11.9.0 is indicated, the value that the module will have will be obtained directly from that OID.
When the execution type is Plugin:
- OID Macros → _oid_N_: The main purpose of using plugin type components is to be able to perform operations with the values of one or more OIDs in the same device, such as obtaining the used-memory percentage from the used-memory bytes and the total available memory bytes.
That is why in these components, you can indicate as many OIDs as you need to use them in other fields.
Besides, these OIDs, or their values, can be used from the _oid_N_ macros. Depending on which of the following fields the macro is used in, the value of the OID or the OID itself will be used.
If used in dynamic components, the OIDs indicated in these fields must be a branch of SNMP and not a final OID. For example, if the OID .184.108.40.206.4.1.33220.127.116.11.18.104.22.168 is indicated, the values that the modules will have will be obtained from the OIDs .22.214.171.124.4.1.33126.96.36.199.188.8.131.52.x. In addition, the X node of each OID must have the same value for the X node of the rest of the OIDs used and the Name OID field if used.
If used in fixed components, the OIDs indicated in these fields must be a final OID. For example, if the OID .184.108.40.206.4.1.2021.4.6.0 is indicated, the value that the module will have will be obtained directly from that OID.
- Value operation: It allows you to indicate an arithmetic operation by means of which the current value of each module generated by the component will be obtained in the preview of the wizard modules. By no means does it affect the final execution of the generated modules.
It accepts the characters "+ - * / ( ) .", numbers and the _oid_N_ macros from which the values for the operation will be obtained. For example:
(_oid_1_ * 100) / _oid_2_
- Satellite execution: It offers the possibility to indicate the execution that a Satellite Server must do for the generated modules when the wizard is launched from a Satellite Server by using the exec server. This is the command, plugin or script that should be used in a module_exec of a satellite server.
It accepts the use of macros for the SNMP wizard (they will be detailed later) and of the _oid_N_ macros to obtain the OIDs used in each module.
The Satellite Server distributes a series of recommended plugins for these components:
- /etc/pandora/satellite_plugins/wizard_snmp_module - /etc/pandora/satellite_plugins/wizard_snmp_process
- Server plugin: Through this dropdown you may indicate a plugin previously registered in Pandora FMS console, which will be used by the plugin server with each module generated by the component. The choice of a plugin shows at the same time the specific fields for its use in the form.
The own plugin fields accept the use of macros for the SNMP wizard and _oid_N_ macros to get the OIDs used in each module.
Pandora FMS console has a series of already registered plugins recommended for these components:
- Wizard SNMP module. - Wizard SNMP process.
The specific macros for the SNMP wizard components that can be used in the plugin type execution fields are
- _address_: IP address used in the SNMP wizard. This macro will not be replaced when the wizard is launched in a policy.
- _port_: Port used in the SNMP wizard.
- _version_: SNMP version used in the SNMP wizard. It can have values 1, 2c or 3.
- _community_: SNMP community used in the SNMP wizard.
- _sec_level_: SNMPv3 security level used in the SNMP wizard. It may have values noAuthNoPriv, authNoPriv or authPriv
- _auth_user_: SNMPv3 user used in the SNMP wizard.
- _auth_method_: SNMPv3 authentication method used in the SNMP wizard. It may have MD5 or SHA values.
- _auth_pass_: SNMPv3 authentication password used in the SNMP wizard.
- _priv_method_: SNMPv3 privacy method used in the SNMP wizard. It may have DES or AES values.
- _priv_pass_: SNMPv3 privacy password used in the SNMP wizard.
The specific fields for components of the WMI wizard are
- WMI class: It refers to the WMI class that will be used in the queries of the modules generated by the component. For example, Win32_LogicalDisk.
It can be used in other fields of this form through the macro _class_wmi_.
- Query key field (_field_wmi_0_): It is the name of the key field that will be obtained in the WMI query used in the generated modules.
Generally, WMI classes have a key field that they always return in any query whether it is indicated or not. That would be the field that should be indicated here. For example, the key field of the Win32_Processor class would be DeviceID.
The name of this field can be obtained in other fields of the form through the macro _field_wmi_0_, and the value that the field has for each record of the WMI query can be obtained through a macro with the same name of the field (_FIELDNAME_). These macros _FIELDNAME_ can be used, among others, in the fields Module name and Description of the component, to generate names and descriptions dynamically. For example, for the field DeviceID the macro with the value would be _DeviceID_.
- Query extra fields → _field_wmi_N_: In these fields we will indicate the names of the extra fields that should be used in the WMI query used in the generated modules.
The names of these fields can be obtained in other fields of the form through the macros _field_wmi_N_, and the values that the fields have for each record of the WMI query can be obtained through macros with the same names of the fields (_FIELDNAME_). These macros _FIELDNAME_ can be used, among others, in the fields Module name and Description of the component, to generate names and descriptions dynamically. For example, for the FreeSpace field the macro with the value would be _FreeSpace_.
- Query filters → Scan: In this space we indicate the conditions for the WMI query launched in the scan, which will allow us to obtain one or more records. For example, DriveType = 3.
In the WMI wizard components, a different module will be generated for each record returned by the WMI scan query. Based on the examples provided so far, the scan query that would be performed would obtain the free space of the Windows computer drives:
SELECT DeviceID, FreeSpace FROM Win32_LogicalDisk WHERE DriveType = 3
When the execution type is Network:
- Query filters → Execution: This space allows us to indicate the conditions for the WMI query launched by each module generated by the component.
It accepts the use of the macros with the field names of the query (_FIELDNAME_) to obtain the value of each record in that field. For example, DriveType = 3 AND DeviceID = '_DeviceID_'.
Based on the examples provided so far, the final execution query of a module generated by the component that would obtain the free space of the drive C: would be
SELECT DeviceID, FreeSpace FROM Win32_LogicalDisk WHERE DriveType = 3 AND DeviceID = 'C:'
- Field value: We will indicate the number of the field of the WMI query from which we want to obtain the value of the module, being the field 0 the key field of the class and the fields 1, and higher, the additional ones of the class.
Based on the examples provided so far, the value of free space on the disks would be obtained from field 1 (FreeSpace).
- Key string: It will allow us to convert the module value into boolean (1 or 0) depending on whether the value of the field indicated in Field value matches the text string indicated in this field.
The Key string option will not be taken into account when the wizard is launched from a Satellite Server by exec server
When the execution type is Plugin:
- Value operation: The main purpose of using plugin type components is to be able to perform operations with the values of different fields of the query, such as obtaining the percentage of disk used from the free disk bytes and the total disk bytes available.
This field allows you to indicate an arithmetic operation with which you will obtain the current value of each module generated by the component in the wizard's module preview. It does not affect in any case the final execution of the generated modules.
It accepts the characters + - * / ( ) . numbers and the macros with the names of the fields of the class (_FIELDNAME_), from which the values for the operation will be obtained. For example:
((_Size_ - _FreeSpace_) * 100) / _Size_
- Satellite execution: Allows you to indicate the execution that a Satellite Server should perform for the generated modules when the wizard is launched from a Satellite Server by using the exec server. This is the command, plugin or script that must be used in a module_exec of Satellite Server.
It accepts the use of the macros for the WMI wizard and of the macros _class_wmi_ to obtain the name of the WMI class and _field_wmi_N_ to obtain the names of the fields of the class used in each module.
The Satellite Server distributes a recommended plugin for these components:
- Server plugin: Allows to indicate a plugin registered in Pandora's console that will be used by the plugin server with each module generated by the component. The choice of a plugin shows at the same time in the form the specific fields for its use.
The own fields of the plugin accept the use of the macros for the WMI wizard and of the macros _class_wmi_ to get the name of the WMI class and _field_wmi_N_ to get the names of the fields of the class used in each module.
Pandora FMS console has a plugin already registered and recommended for these components:
Wizard WMI module
The specific macros for the WMI wizard components that can be used in the plug-in type run fields are
- _address_: IP address used in the WMI wizard This macro will not be replaced when the wizard is launched in a policy.
- _namespace_wmi_: Namespace used in the WMI wizard.
- _user_wmi_: User used in the WMI wizard.
- _pass_wmi_: Password used in the WMI wizard.
1.7 Component Groups
In order to help sorting and classifying components, component groups have been created. Components are associated to groups when created.
In order to see the existing component groups, go to Resources > Component groups:
The already existing groups and their description is shown on the picture below.
You may view the details on the groups by clicking on their name, delete them by clicking on the "X" at the right side or create new ones by clicking on the "Create" button on the bottom.
If you intend to create a new components group, click on the "Create" button and fill out the form fields.
Just provide a name for the group and determine whether it has a parent among the existing groups or not. Then click on the "Create" button once you are done.
Add as many new components to your newly created component group as you like.