Log Online Search

Scenario

FusionInsight Manager allows you to search for logs online and view the log content of components to locate faults.

Procedure

1. Log in to FusionInsight Manager.
2. Choose O&M > Log > Online Search.
3. Configure the parameters listed in Table 1 to search for the logs you need. You can select a default log search duration (including 0.5h, 1h, 2h, 6h, 12h, 1d, 1w, and 1m), or click to customize Start Data and End Data.

   Table 1 Log search parameters

   Parameter	Description
   Search Content	Keywords or regular expression to be searched for
   Service	Service or module for which you want to query logs
   File	Log files to be searched for when only one role is selected
   Lowest Log Level	Lowest level of logs to be queried. After you select a level, the logs of this level and higher levels are displayed. The levels in ascending order are as follows: TRACE < DEBUG < INFO < WARN < ERROR < FATAL
   Host Scope	You can click to select hosts. Enter the host name of the node for which you want to query logs or the IP address of the management plane. Use commas (,) to separate IP addresses, for example, 192.168.10.10,192.168.10.11. Use hyphens (-) to indicate an IP address segment if the IP addresses are consecutive, for example, 192.168.10.[10-20]. Use hyphens (-) to indicate an IP address segment if the IP addresses are consecutive, and use commas (,) to separate IP address segments, for example, 192.168.10.[10-20,30-40]. NOTE: If this parameter is not specified, all hosts are selected by default. A maximum of 10 expressions can be entered at a time. A maximum of 2,000 hosts can be matched for all entered expressions at a time.
   Advanced Configurations	Max Quantity: maximum number of logs that can be displayed at a time. If the number of queried logs exceeds the value of this parameter, the earliest logs will be ignored. If this parameter is not set, the maximum number of logs that can be displayed at a time is not limited. Timeout Duration: log query timeout duration. This parameter is used to limit the maximum log query time on each node. When the query times out, the query is stopped and the logs that have been searched for are still displayed.

4. Click Search. Table 2 describes the fields in search results.

   Table 2 Parameters in search results

   Parameter	Description
   Time	Time when a line of log is generated
   Source Cluster	Cluster for which the log is generated
   Host Name	Host name of the node where the log file recording the line of log is located
   Location	Path of the log file recording the line of log Click the location information to go to the online log browsing page. By default, 100 lines of logs before and 100 lines after the line of log are displayed. You can click Load More on the top or bottom of the page to view more logs. Click Download to download the log file to the local PC.
   Line No.	Line number of a line of log in the log file
   Level	Level of the line of log
   Log	Log content

   

   You can click Stop to forcibly stop the search. You can view the search results in the list.

5. Click Filter to filter the logs to display on the page. Table 3 lists the fields that you can use to filter logs. After you configure these parameters, click Filter to search for logs meeting the search criteria. You can click Reset to clear the information that you have filled in.

   Table 3 Parameters for filtering logs

   Parameter	Description
   Keywords	Keywords of the losg to be searched for
   Host Name	Name of the host to be searched for
   Location	Path of the log file to be searched for
   Started	Start time for logs to be searched for
   Completed	End time for logs to be searched for
   Source Cluster	Cluster for which logs need to be searched