Monitoring and controlling devices

Locating devices

Cumulocity provides the option to view all devices in your account on a map.

Click Map in the Devices menu in the navigator to display a map showing all devices in real time.

Devices are represented as “pins”. Click a pin to see the name of the respective device. Click the device name to switch to its device details.

Connection monitoring

In the Device Management application you can monitor the connections to your devices.

This can be done at the level of individual devices (see below) or across multiple devices in a list.

To monitor the connection for multiple devices

Open a device list to monitor the connections for multiple devices.

The connection status is represented by arrows in the Status column in the device list.

Send connections

The top arrow represents the send connection (traffic from the device to Cumulocity). The status for the send connections may be one of:

• Online (data was sent within the required interval)- indicated by a green arrow .
• Offline (data was not sent within the required interval) - indicated by a red arrow .
• Unknown or not monitored (no interval configured) - indicated by a grey arrow .

Hovering over the arrow displays the timestamp of the last request from the device to the server.

When a device is detected to be offline (stops sending data within required interval and top arrow changes to red color), an unavailability alarm is created for the device: “No data received from device within required interval”.

Send connections are updated when something is sent from the device, such as alarms, events, measurements or if a blank update is sent to the device itself. For details see Device availability.

Push connections

The bottom arrow represents the push connection (from Cumulocity to the device). The status for the push connections may be one of:

• Online (connection established)- indicated by a green arrow .
• Offline (connection not established) - indicated by a red arrow .
• Not monitored - indicated by a grey arrow .

A push connection is an active HTTPS long poll connection to the /notification/operations API endpoint or an active MQTT connection to the MQTT endpoint of Cumulocity. It is always green if the device is connected, even without data.

Maintenance mode

Moreover, the device may be in “Maintenance” mode, indicated by the tool icon in the Status column. This is a special connection status indicating that the device is currently being maintained and cannot be monitored. While a device is being maintained, no alarms for that device are raised.

You can turn the maintenance mode on or off for a device through a toggle in the Connection monitoring card in its Info tab, see below.

To monitor the connection of a particular device

Navigate to the Info tab of a particular device to monitor the connections of this device. Under Device status, the connection status for the device is displayed.

Below the send connection and push connection status, the time of the last communication is displayed.

In the Required interval field you can specify an interval. This parameter defines how often you expect to hear from the device. If, for example, you set the required interval to 60, you expect the device at least to communicate once in an hour with Cumulocity. The interval is either set by the device itself, based on the device’s knowledge how often it will try to send data, or it is set manually by you.

If an interval is set, you will find the Maintenance toggle below it.

With the Maintenance toggle you can turn the maintenance mode for the device on or off which is immediately reflected in the connection status.

Availability

Cumulocity distinguishes between connection monitoring and availability. Connection monitoring, as described in the previous section, only indicates if the device is communicating with Cumulocity, it does not automatically indicate if it is functional or not.

Availability indicates if a device is in service. For example, a vending machine is in service if it is ready to sell goods. A vending machine can sell goods using cash money without a connection to Cumulocity. From the perspective of a merchant, it is in service. Similar, if you switch off the power on a gateway, the devices behind the gateway can still continue to work.

Cumulocity considers a device to be in service while there is no critical, unresolved alarm present for the machine. This is displayed as a share of time such an alarm was present. If a machine didn’t have any critical alarms whatsoever during a time period, it was 100% in service. If half of the time there was some critical, unresolved alarm, the machine was 50% in service.

While a machine is offline, Cumulocity assumes by default

• that the machine continues to stay in service during the connection outage, if this was the status before it lost connection.
• that the machine continues to stay out of service, if this was the status before it lost connection.

There may be exceptions from this rule. If your vending machines rely exclusively on cashless payment, losing the connection to the network means that your machine is out of service and stops selling. In this case, unavailability alarms must be set in the Administration application which have CRITICAL severity instead of MAJOR severity.

Cumulocity displays service availability at the level of individual devices and across all devices.

To view the availability of a particular device

Click the Availability tab in the details of a particular device to check the availability of this device.

To view the availability across all devices

Click Availability in the Device menu in the navigator to display the overall service across all devices.

The Availability page shows the availability of devices for the last 24 hours, last 7 days and last 30 days in percentage.

Working with alarms

Devices can raise alarms to indicate that there is a problem requiring an intervention.

To view alarms

Cumulocity displays alarms at the level of individual devices and across all devices:

• To check the alarms for all devices, click Alarms in the Overview menu in the navigator.
• To check the alarms of a particular device, switch to the Alarm tab in the details of this device.

By default,

• only unresolved alarms are shown. If you turn on Show cleared alarms at the right of the top menu bar, you will see the entire alarm history.
• alarms are shown as coming in from the devices in real time. Click Realtime in the top menu bar to disable real-time updates.

Alarms are classified according to their severity. Cumulocity includes four different alarm types:

The Alarm tab is split into four sections corresponding to these alarm types.

In the top menu bar, buttons are provided to filter for severity. By clicking a button, the corresponding section will be hidden. Click it once more to make it visible again.

Within each section, the alarms are sorted by their occurrence, displaying the most recent alarm first.

In each row, the following information for an alarm is provided:

Click the arrow on the right of a row to expand it and display further details on the alarm.

• Status: Providing further information on the alarm status and showing the type of the alarm. The type info is used for duplicating alarms and for configuring the priority of alarms in Alarm mapping.
• Change Log: Providing the server time when the alarm was created, which may differ from the device time.

To change the status of an alarm

To change the status of an alarm, hover over it and click the button for the desired status or click the menu icon and select the desired status. It is also possible to change the status of all alarms to “clear” at once. Click Clear all in the top menu bar, to clear all alarms of the selected severities.

Working with operations

Operations are used to remotely control devices.

You can view operations at the level of individual devices and across all devices:

• To view the operations for all devices, click Device control in the Overview menu in the navigator.
• To view the operations of a particular device, switch to the Control tab in the details of this device.

There are two types of operations in Device control, each represented by a tab:

• Single operations execute on a single device, see To view single operations.
• Bulk operations comprise of the same single operation executed on a set of devices, see To view bulk operations.

To view single operations

See the list of single operations in the Single operations tab.

Single operations can have one of the following four statuses:

In each row, the following information for an operation is provided:

Clicking a row expands it and displays further details on the operation.

• Details: Providing information on the operation name and status. In case of status = FAILED the reason for the failure is provided. In case the single operation is part of a bulk operation, you can see the bulk operation details.
• History of Changes: Providing information on the past changes of the operation.

To filter the list of single operations by status, click one of the status buttons in the top menu bar. Click All to clear the filter.

Click Realtime at the right of the top menu bar to see operations coming in from the devices in realtime. Click Reload to update the list once manually.

To add and execute a single operation

Single operations can be created either from bulk operations or via the different types of operations that the device supports: managing firmware, software, configurations and more.

When you create a bulk operation, the single operations entailed in the bulk operation are also added to the list of single operations.

Operations for a specific device can also be created and executed in the Shell tab of the device, see Shell.

To cancel pending single operations

You can cancel particular pending single operations or all pending single operations at once.

To cancel a particular pending single operation, click the menu icon at the right of the respective single operation entry and select Cancel operation.

To create a smart rule from a single operation

Click the menu icon at the right of the single operation that you want to create a smart rule for, and select Create smart rule.

See To create a smart rule for further steps.

To view bulk operations

See the list of bulk operations in the Bulk operations tab.

Bulk operations have an operation type and status.

You can add bulk operations of the following operation types with the bulk operation wizard:

Bulk operations can have other operation types as well, for example when you schedule a single operation as bulk operation and the single operation has a different operation type.

Bulk operations can have one of the following statuses:

In each row, the following information for a bulk operation is provided:

Clicking the arrow button at the right in a row expands the row and displays further details on the bulk operation.

• Details: Providing information on the start date, delay, status and result of the bulk operation. The result lists the number of successful, failed and pending operations. If the bulk operation is a retry attempt for failed operations, there will be an additional row that shows the index of the bulk operation it was retried from. Click the index to scroll to that bulk operation. If a description was added when the bulk operation has been created, there will be an additional row that shows this description.
• Operation: Providing information on the operation in the form of a JSON object.
• Operations: Only present for executing or completed bulk operations. Providing information on the status and the device of single operations entailed in the bulk operation. Can be filtered by status. You may also either retry all failed operations by clicking Retry failed operations at the top right of the Operations section or retry single operations by hovering over them and then clicking the Retry operation button that appears right next to it. Also see To retry failed operations.
• History of Changes: In a second tab, providing information on the past changes of the bulk operation.

To filter the list of bulk operations by operation type, click the dropdown list in the top menu bar and select a set of operation types, then click Apply. To clear the filter, select All in the dropdown list and click Apply once more.

To filter the list of bulk operations by status, click one of the status buttons in the top menu bar. Click All to clear the filter.

To filter the list of bulk operations by date, select a date in both the Date from and Date to datepickers, then click Apply right next to it. To clear the filter, click Clear right next to it.

To clear both filters, click Reset filters at the bottom of the list (only visible if filters are applied).

To add a bulk operation

There are two ways of creating a bulk operation:

• Use the bulk operation wizard
• Schedule a single operation as bulk operation

To add a bulk operation using the wizard

Follow these steps:

1. In the Bulk operations tab, click New bulk operation at the right of the top menu bar.
2. In the resulting dialog, select an operation type.
3. The resulting wizard has four steps. The first two steps differ depending on the operation type:

• Configuration update
  • Select a configuration from the list. The list can be filtered by configuration type or by configuration name. Click Next.
  • Check the preview of the selected configuration. Click Next.
• Firmware update
  • Select a firmware from the list. The list can be filtered by firmware name. Click Next.
  • Expand a version and select a patch. Click Next.
• Software update
  • Expand a software from the list and select a version, then also choose to install/update or remove the software from the dropdown list. The list of available software can be filtered by device type, by software type or by software name. Click Next. If you selected software for multiple device types, a warning dialogue appears and informs you that some operations may fail due to unsupported software, and ask for confirmation.
  • Confirm the selection and click Next.
• Apply device profile
  • Select a device profile from the list. The list can be filtered by device type or by profile name. Click Next.
  • Confirm the selection and click Next.

4. Select target devices by applying filters to the paginated list of all devices. You can filter by status, name, type, model, group, registration date and alarms. You may apply multiple filters. To apply a filter, click the column header, make your filter option choices in the context menu and click Apply. The group filter also allows filtering by subgroups. To select a subgroup, if there are any, click the arrow button at the right of a group and select the desired subgroups from the dropdown. You can clear all filters by clicking Clear filters above the list. For the operation types “configuration update”, “software update” and “apply device profile”, the list is already filtered by the according device type. Click Next.
5. Enter a new title or use the preset title. Optionally enter a description. Select a start date and a delay. The delay may either be in seconds or milliseconds and is the time spent between each single operation of the bulk operation. Click Schedule bulk operation to create the bulk operation.

To schedule a single operation as bulk operation

You can schedule a single operation as a bulk operation either from the Single operations tab or from a Control tab of a particular device. Follow these steps:

1. Click the menu icon at the right of the single operation that you want to schedule as a bulk operation and then click Schedule as bulk operation.
2. The resulting wizard is similar to the new bulk operation wizard described in To add a bulk operation using the wizard. However, there are just two steps because the operation type is inferred from the operation that is scheduled as a bulk operation. See the description of the full wizard and follow it.

To edit the schedule of bulk operations

You may only edit the schedule of bulk operations with status = SCHEDULED.

1. Click the menu icon to the right of the bulk operation that you want to edit, and then click Edit schedule.
2. In the resulting dialog box you may change the Start date and Delay values.
3. Click Reschedule to apply your changes.

The changes are applied to the bulk operation accordingly.

To cancel bulk operations

You may only cancel bulk operations with status = SCHEDULED or EXECUTING. If it is executing, you may only cancel the operation until all of its single operations are created. This way, you can cancel the creation of the remaining single operations.

Click the menu icon to the right of the bulk operation that you want to cancel, then click Cancel bulk operation.

To retry failed operations

You may retry the failed operations of a bulk operation that is either executing or completed with failures.

To do so, expand the desired bulk operation, then click Retry failed operations under Operations to create a new bulk operation with all failed operations. To retry a single operation, hover over the operation and click Retry operation. This will create a new single operation.

For a bulk operation that completed with failures, you may also click the menu icon to the right of the operation, then click Retry failed operations.

To manually set failed bulk operations to successful

You may manually set a failed bulk operation to the status SUCCESSFUL.

To do so, click the menu icon to the right of the bulk operation, then click Set operation to successful.

This may be useful if the operation is generally a success, but contains operation failures on devices that are not too important. These failures would otherwise still leave the bulk operation in status FAILED.

Troubleshooting devices

Troubleshooting devices at a more detailed level can be done with the help of events. Events are low-level messages sent by devices that are usually used for application-specific processing. For example, a vending device sends its real-time sales in the form of events.

To view events

Cumulocity displays events at the level of individual devices and across all devices:

• To view the events for all devices, click Events in the Overview menu in the navigator.
• To view the events of a particular device, switch to the Events tab in the details of this device.

Per default, events are shown as coming in from the devices in real time. To disable real-time updates, click Realtime at the right of the top menu bar.

For each event, the following information is provided:

In the event list, the latest entry is displayed on top.

Clicking a row expands it and displays further details on the event (as type and position of the device).

Since devices may send large amounts of event data, you can filter the data to be displayed by date.

Select a start date and an end date from the fields in the top menu bar and click Apply to apply the filter. Click Clear to clear the filter again.