Host Groups Inventory

This section shows the complete list of Host Groups defined and managed in the selected Realm.

Remember

A Host Group is a logical grouping of certain Hosts that is made to extract statistics and availability data from the set more easily.

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Host Group Inventory Columns/Fields

The fields that head the inventory are described below:

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✓ Host Group: registers the formal identifier of the Host Group. It is determined by the value of the Display Name attribute, freely configurable if it has the appropriate permissions.

Clicking on the group name will take you to the corresponding Detailed view of a Host Group.

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✓ Hosts: this column counts the total number of Hosts that constitute the group. The data is accompanied by a percentage bar. By sorting the column, you get a ranking of the Host Groups with more or less members in the Realm.

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By clicking on the bar, the user is redirected to the updated Hosts Inventory, showing only the Hosts belonging to the selected Host Group, i.e. the table is filtered with the Hosts that are part of the group.

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✓ Hosts by State: This field is a summary of the hosts (group members) classified by their different operational states.

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Like the previous bar, each status icon redirects the user to the updated Hosts Inventory, showing the filtered table with the Hosts members of the group, plus the selected availability status. The query is further refined by discriminating the rest of the elements, as shown in the following image:

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Attention

This action shall be blocked in non-occurring monitoring states, i.e. whose value is 0.

✓ Services: this column counts the total number of Services that are associated to the Hosts that are members of the group. The data is accompanied by a percentage bar.

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By clicking on the bar, the user is redirected to the updated Services Inventory, showing only the Hosts and associated Services belonging to the selected Host Group, i.e. the table is filtered with the Hosts and Services that are part of the group.

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✓ Services by State: this field is a summary of the Services associated to the member Hosts of the group classified by their different operational states.

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Like the previous bar, each status icon redirects the user to the updated Services Inventory, showing the filtered table with the Hosts and Services members of the group, plus the selected availability status. The query is further refined by discriminating the rest of the elements, as shown in the following image:

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Remember

Although a Host Group itself does not have its own availability status, the system proceeds to determine and assign an overall status according to the percentage of Hosts that are members of the group that are active (Up).

The following monitoring state calculation method is implemented:

  • If more than 66% of the member Hosts are in Up, it is considered a Up state.

  • If between 33 % and 66 % of the member Hosts are in Up, it is considered a Unreachable state.

  • If less than 33% of the member Hosts are in Up, it is considered a Down state.

  • If finally there are no member Hosts in Up, a Pending state is considered.

Additionally, the status of the Host Group (as its own entity) can be known in the table according to the background colour of each of the rows of elements.

Each monitoring status is associated with an identifying colour. More information can be found at: Statements of Assets in WOCU.

Exporting Host Groups from the inventory

Although WOCU-Monitoring offers a multitude of functions for the administration of data, metrics, graphs, etc., at some point it may be necessary to use other external tools to process this information. For this purpose, the export function is integrated, which facilitates the download of the inventory data in a file to the hard disk for further processing or use.

The two buttons next to the Search bar, CSV and JSON, facilitate the export of data in both formats:

CSV

Clicking on the corresponding button will open a new modal for the selection and marking of parameters to be exported at the user’s discretion. The available options are:

  • Host Group (Obligatory)

  • Members (Obligatory)

  • Realm Name (Obligatory)

  • Total Hosts

  • Hosts Up

  • Hosts Down

  • Hosts Pending

  • Hosts Unrepairable

  • Total Services

  • Services Ok

  • Services Warning

  • Services Critical

  • Services Unknown

  • Services Pending

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JSON

This other option follows the same operation as the previous case, but initiates the download of a file in JSON (JavaScript Object Notation) format, a lightweight data interchange format capable of being read by any programming language and, therefore, used to exchange information between different technologies.

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In both options, the system will offer the option to select the directory where to download and store the generated inventory file and to assign an alternative name to it. By default, the system assigns the following name:

assets_hostgroup_[nombre del reino]_00h-00min_dd-mm-aaaa y la extensión ``.csv`` o ``.json`` según la opción escogida.

Multi-realm Hostgroup Management

Within Multi-Realm entities, Host Groups will follow a special casuistry, since WOCU-Monitoring allows a Host Group to have several associated Realms.

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Unlike standard Realms, each list entry records a particular Hostgroup, followed by the Realm or Realms to which it is linked (enclosed in square brackets). Only Hostgroups with more than one Realm will display a button with the plus icon (+) inside it, which displays new sub-entries, one for each associated Realm.

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By placing the cursor over a percentage bar, the user will be able to consult the detail of the same through a pop-up text, where the total number of Hosts that constitute the Realm is counted.

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Note

To retract the view repeat the action on the button (now with a minus sign inside) and the Realms will disappear from the list.

Access to their respective modals is facilitated by clicking on the name of a given Realm. You will then be taken to its Detailed view of a Host Group. This new view is displayed in a pop-up window in front of the current tab.

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Fixed at the top left of the Detailed view of a Host Group, there is a Realm Selector available, in order to be able to switch entities from any position within the modal.

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