Interface Error Troubleshooting

How to quickly locate interfaces and query logs for interface errors

How to locate

1.Front end F12 interface error

Error information troubleshooting If an error message is found, press f12--network-- filter the request information fetch/xhr-- check the single request --priview-- locate the error reporting request

Find URL Click the headers of a single request, and you will see general. Here you will see the request address:

Request URL ：XXXXX /api/rest_j/v1/data-source-manager/op/connect/json

2. App name found

When an interface request reports an error, the URL specification locates the application name. The linkis interface URL follows the design specification:

/api/rest_j/v1/{applicationName}/.

ApplicationName is the application name. Find the microservice to which you belong through the application name, and view the log under the corresponding microservice.

Correspondence between application name and microservice

ApplicationName	Microservice
linkismanager	cg-linkismanager
engineplugin	cg-engineplugin
cg-engineconnmanager	cg-engineconnmanager
entrance	cg-entrance
bml	ps-bml
contextservice	ps-cs
datasource	ps-datasource
configuration
microservice
jobhistory	ps-publicservice
variable
udf

3. Find log path

The user service address is different. We need to locate the log address first

ps -ef | grep ps-datasource

• cg-linkismanager：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-cg-linkismanager-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-cg-linkismanager.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-cg-linkismanager.out

• cg-engineplugin：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineplugin-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineplugin.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineplugin.out

• cg-engineconnmanager：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineconnmanager-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineconnmanager.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-cg-engineconnmanager.out

• cg-entrance：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-cg-entrance-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-cg-entrance.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-cg-entrance.out

• ps-bml：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-ps-bml-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-ps-bml.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-ps-bml.out

• ps-cs：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-ps-cs-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-ps-cs.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-ps-cs.out

• ps-datasource：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-ps-datasource-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-ps-datasource.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-ps-datasource.out

• ps-publicservice：

  GC log： /${LINKIS_HOME}/logs/linkis/linkis-ps-publicservice-gc.log

  Service log： /${LINKIS_HOME}/logs/linkis/linkis-ps-publicservice.log

  System out log： /${LINKIS_HOME}/logs/linkis/linkis-ps-publicservice.out

4. view log

Display the error message corresponding to the interface

Find the request log, in which other services called by the service are displayed, or the logical logs processed in their own services are displayed

tail -fn200 linkis-ps-data-source-manager.log

The above figure shows the logs of service calling other services. You can query the logs of other services based on this information

The following figure shows the service logs that actually report errors

tail -fn200 linkis-ps-metadataquery.log

Front end error reporting display

5.Exception location

ECMResourceClear failed, ecm current resource:bdpuje s110003:9102{"instance":0,"memory":"0.0 B","cpu":0} org.apache.linkis.manager.exception.PersistenceErrorException: errCode: 210001 ,desc: label not found, this label may be removed a lready. , ip: localhost110003 ,port: 9101 ,serviceKind: linkis-cg-linkismanager

Where IP and port are the corresponding service addresses, and servicekind is the corresponding service name. If the RPC call log fails, you can use this information to find the corresponding service