Analyzing Logs

In log analysis, the log of the monitoring target is collected and its contents are checked, and it can be monitored by converting it into an indicator, which is a structured data. Basic collection logs are provided for each monitoring target, and users can create custom logs to collect and check desired logs in addition.

Start log analysis

You can check the log status list or search for the monitoring target log to check. To check the log status list, follow the procedure below.

1. Cloud Monitoring Console > Log Analysis > Log Status을 클릭하세요. Log Status 페이지로 이동합니다.
2. Enter the search conditions of the service to be analyzed in the search area, and then click Log Search.
   • A list of services that match the search criteria and search information will be displayed at the bottom.
   • Clicking the Detail View button for each service displays detailed log information for the service.

     Item	Description
     Search Area	The search filters displayed in the search area may vary depending on the service type Advanced Search can be done by clicking the Advanced Search button. Each detailed search filter condition item can be selected one or more
     Number of items to display for monitoring targets	Displays the number of search results and the performance number that can be viewed at once in the list The default is to view 20 at a time. The number of items listed can be changed to view 10, 20, 30, 40, 50, or 100 at a time
     Search Information	Displays the search result value for the search condition item
     Detailed View	Check the detailed information of the corresponding monitoring target
     Log Search	Search logs by combining keywords and queries and check detailed history

Check log details

You can view the detailed log records and log graphs of the monitoring target.

Checking the log list

You can check the log details in the monitoring detail pop-up window. To check the monitoring details of the log, follow the next procedure.

1. Cloud Monitoring Console > Log Analysis > Log Status을 클릭하세요. Log Status 페이지로 이동합니다.

2. Click on the log to check the detailed information on the Log Status page. The Monitoring Details popup window will open.

3. Click the log tab. When you place the mouse cursor on the graph, the value of each log item appears in a popup window.

   • You can set the inquiry period or change the refresh cycle by clicking the icon at the top right.
   • You can select the graph display method by clicking the Detail, Summary buttons at the top left of the log chart.

   Item	Description
   Basic Information	Displays basic information about the monitoring target
   Details	The chart for each log of the monitoring target is unfolded and displayed Check one chart in detail
   Summary	Performance charts of monitoring targets are displayed in a checkerboard format Check multiple charts at a glance
   Setting the inquiry period	Date/Time: Displays the standard time of the data inquiry. Refresh: Refreshes directly to the current time. Start/Stop: Turns the automatic refresh function on or off. Settings: Sets the data inquiry period or changes the automatic refresh cycle
   Performance comparison	Combine keywords and queries to search logs and check detailed history
   Performance-based chart	The log-based chart of the monitoring target is displayed as a graph If you place the mouse cursor over the graph, the log item value at the specified time will appear in a popup window.

Check by searching the log

You can search logs by combining keywords and queries, and check the details.

To search logs, follow the next procedure.

1. Cloud Monitoring Console > Log Analysis > Log Status을 클릭하세요. Log Status 페이지로 이동합니다.

2. Click Log Status on the Log Search page. It moves to the Log Search page.

   Item	Description
   Monitoring target	Indicates the type of service for the monitoring target to be compared Click the monitoring target list to change the service If the service is changed, all charts created so far will disappear. Click the Add button to search for and add the monitoring target of the currently selected service The selected monitoring target is displayed on the page, and you can delete the monitoring target by clicking X or Delete all.
   Search Condition	Set the condition for the log to be searched
   Setting the inquiry period	Date/Time: Displays the standard time of the data inquiry. Refresh: Refreshes directly to the current time. Start/Stop: Turns the auto-refresh function on or off. Settings: Sets the data inquiry period or changes the auto-refresh cycle
   The graph of log occurrence	Log occurrence graph
   Occurrence log message	Log messages that occurred from the monitoring target are displayed by time

3. Add button is clicked. A popup window that can add a monitoring target will open.

4. Click the monitoring target and select the log file you want to add.

5. Once the log file selection is complete, click the Confirm button.

6. Enter the search conditions and click the Search button. The search results will be displayed on the log volume graph and the occurred log message.

   Item	Description
   Add Metric	Add a metric to the log search results Use after searching logs
   Execution History	Check the list of search conditions that were recently executed for the search Execution history displays up to 20 most recently executed search conditions Select the desired execution history to input as the current search condition
   Search field	Select search field
   Condition	Select search condition like , !like , = , != , <= , >= , > , < can be selected
   Search value	Enter the keyword to search
   Log Search	Select an operator (AND, OR) for the newly added search condition Only displayed when a new search condition is added
   Add condition	Add new search condition

7. When searching logs, the log history corresponding to the entered condition is displayed as a chart.

   • Log history is displayed in seconds.

     Item	Description
     Log occurrence graph	The log occurrence during the set period is displayed as a graph If you place the mouse cursor over the graph, the value of each log item appears in a popup window. Clicking on the bar graph of the graph displays the list of logs at that point in time.
     Setting the inquiry period	Date/Time: Displays the reference time of the data Refresh: Refreshes directly to the current time. Start/Stop: Turns the automatic refresh function on or off. Settings: Sets the data inquiry period or changes the automatic refresh cycle
     Monitoring target	The monitoring target list is displayed If you select a monitoring target to check the log message, the contents will be displayed in the log list
     Log list	Log messages that occurred in the monitoring target are displayed by time Clicking the button in the log list displays the full message of the log Click download to download the currently displayed log message in Excel and TXT file formats

Check the status of log collection

You can check the collection information of major logs for the past 7 days in a chart.

When you place the mouse cursor on the graph, detailed information appears in a pop-up window. Only collected logs are aggregated, and uncollected logs are not displayed in the current status.

To check the log collection status, click Cloud Monitoring Console > Log Analysis > Log Collection Dashboard.

Check the status of the indicator settings

You can create metrics to display the occurrence of log patterns over time as a time series. To check the list of metrics, click Cloud Monitoring Console > Log Analysis > Current Metric Settings.

Check the details of the indicator

To view detailed information about the metric, follow these steps.

1. Cloud Monitoring Console > Log Analysis > Metric Setting Status will be clicked. It moves to the Metric Setting Status page.
2. On the Indicator Setting Status page, click the indicator name to check detailed information. The Indicator Details popup window will open.

Adding Indicators

You can add new metrics to display the desired log data as a time series.

To add a new metric, follow the procedure below.

1. Cloud Monitoring Console > Log Analysis > Metric Setting Status will be clicked. It moves to the Metric Setting Status page.

2. On the Indicator Setting Status page, click the Add button. The Add Indicator popup window opens.

3. Indicator Name을 입력하세요.

   • Indicator names can only use English uppercase and lowercase letters, underscores (_), periods (.), and hyphens (-).
   • To distinguish metrics from general performance, the prefix metricfilter. is automatically added and cannot be deleted or changed.

   Item	Description
   Indicator Name	Enter the name of the new indicator to be created
   Monitoring Target	Indicates the type of service for the monitoring target to be compared Click the monitoring target list to change the service If the service is changed, all charts created so far will disappear. Click the add button to search for and add the monitoring target of the currently selected service The selected monitoring target is displayed on the page and can be deleted by clicking X or delete all
   Search Conditions	Set conditions for logs to be searched
   Set query period	Date/Time: Displays the reference time for data query Refresh: Refreshes directly to the current time. Start/Stop: Turns automatic refresh on or off. Settings: Allows setting the data query period or changing the automatic refresh cycle.
   Log Volume Graph	When searching for logs, the log history that matches the entered conditions is displayed as a chart
   Occurrence Log Message	Log messages that occurred from the monitoring target are displayed by time

4. Add button is clicked. A popup window that can add monitoring targets will be opened.

5. Click the monitoring target and select the log file you want to add.

6. Once the log file selection is complete, click the Confirm button.

7. Enter the search conditions and click the Search button. The search results will be displayed in the log volume graph and occurrence log message.

   Item	Description
   Add Metric	Add metrics to log search results Use after searching logs
   Execution History	Check the list of search conditions that were recently executed for searching Execution history displays up to 20 most recently executed search conditions Can input the desired search history as the current search condition
   Search Field	Select Search Field
   Condition	Select search condition like , !like , = , != , <= , >= , > , < can be selected
   Search value	Enter the keyword to search
   Operator	Select an operator (AND, OR) for the newly added search condition Only displayed when a new search condition is added
   Add condition	Add new search condition

8. Click the Confirm button. A new metric will be added with a toast popup message.

Modifying Indicator Search Conditions

To modify the search criteria of the indicator, follow the next procedure.

1. Cloud Monitoring Console > Log Analysis > Metric Setting Status will be clicked. It moves to the Metric Setting Status page.
2. On the Indicator Setting Status page, click the Indicator Name of the indicator you want to modify. The Indicator Details popup window will open.
3. Indicator Details popup window, click the Edit button. The Edit Indicator popup window opens.
4. In the Modify Indicator popup window, modify the search conditions and click the Confirm button. The indicator will be modified along with a toast popup message.

Deleting Indicators

To delete an indicator, follow these steps.

1. Cloud Monitoring Console > Log Analysis > Metric Setting Status을 클릭하세요. Metric Setting Status 페이지로 이동합니다.
2. On the Indicator Setting Status page, select the indicator to be deleted and click the Delete button. The indicator will be deleted along with a toast popup message.