The Cleo Harmony and Cleo VLTrader built-in NoSQL database in the web UI is used as a repository for all runtime messages and log files. The level of messages logged can be configured; by default, the last ten minutes of the event log is shown.
To view logged events in the web UI, click Logs in the top menu bar.
- Using the drop-down menu at the top of the table, you can switch the logs table to display the Event Log, Debug Log, Certificate Log, and System Counters. Select Event Log.
- Choose Show milliseconds to display or hide the milliseconds of the logs. Choose Show colors to view the line-based error and warning colors.
- Use the View Thread Events button by selecting a message row in the log table and clicking the View Thread Events icon. The event thread will appear in a tab below the log table. This tab is resizeable; click and drag the grey bar separating the table and the tab to change the size. Each time you click View Thread Events, the selected thread will open in a new tab.
- Use the Pre-filter (Server-side) button to pre-filter data before it reaches your Logs page. See Advanced filtering options for Logs for detailed information.
- You can also double-click a specific message to view its thread events. The selected thread will open in a new tab.
- To filter event logs, use the inline filtering options at the top of the log table. Available filtering options are Date, Node, Source, Event Type, and Event Details.
- Use Date to filter by date and time. Using the drop-down menu, choose from Last 10 minutes, Last hour, Last 4 hours, Last 12 hours, Today, Yesterday, and Custom. If you choose Custom, a Date and Time dialog box will appear. You can choose a custom date and time range in this dialog box. Click Apply to save your changes. Note that the read-only date range that is displayed in the upper corner of the page reflects your selection. Relative time selections are updated during any page refresh or by clicking the refresh button in the page footer. Custom selections are persistent until changed.
- To filter by Node, click the Node menu which contains a list of all configured nodes in the cluster. Select the desired node(s).
- To filter by Source, click the Source menu which contains a list of all sources represented by the current dataset. Select the desired source(s).
- To filter by Event Type, click the Event Type drop-down menu. You can select Errors, Warnings, Errors and Warnings, and Advanced. Clicking Advanced opens a dialog box where you can choose the types of events by which to filter.
- To filter by Event Details, click the Event Details menu and type a text string by which to filter.
- You can export the log threads. Click the tab of the event thread to be exported. Two orange buttons appear to the right of the tab:
- Open thread: Opens the thread in a new browser window.
- Download thread: Downloads the thread as an .html file.
Advanced filtering options for Logs
Advanced filtering options are used to pre-filter data from the server side before it reaches your Logs page. To access these options, click the Pre-Filter (Server-Side) button in the button row:
The Pre-filter Data (server-side) dialog box appears:
- Start Time
- Use the Start Time drop-down menu to choose a start time for pre-filtering. The start time is bound to the full Logs list start time.
- Use the Nodes option to filter by specific nodes. You can toggle this from a drop-down menu to a text field by clicking the down arrow button. Click the field to open the drop-down menu or, when toggled to text, enter text. Nodes are live data. Nodes that are online are available for you to select from the drop-down menu. Offline Nodes must be typed into the text field.
Note: The Nodes visible to a given user depend on the user's specific system privileges.
- Event Type
- Use the Event Type drop-down menu to choose a type of event to filter. Select from All, Errors, Warnings, and Errors and Warnings.
- Use the System and Local Listener options to pre-filter data from the System, Local Listener, or both.
- Use the Sources option to filter by a specific source. You can toggle this from a drop-down menu to a text field by clicking the down arrow button. Click the field to open the drop-down menu or, when toggled to text, enter text.