Error while trying to connect to the endpoint. Cannot borrow client for ssl

Question

This error is being printed in the WSO2 API Manager wso2carbon.log..

sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:88)
    at org.wso2.carbon.databridge.agent.endpoint.binary.BinarySecureClientPoolFactory.createClient(BinarySecureClientPoolFactory.java:53)
    ... 9 more
TID: [-1] [] [2016-12-28 22:16:04,043] ERROR {org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker} -  Error while trying to connect to the endpoint. Cannot borrow client for ssl://192.168.1.36:9711 {org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker}
org.wso2.carbon.databridge.agent.exception.DataEndpointAuthenticationException: Cannot borrow client for ssl://192.168.1.36:9711
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:100)
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.run(DataEndpointConnectionWorker.java:43)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.wso2.carbon.databridge.agent.exception.DataEndpointException: Error while opening socket to 192.168.1.36:9711. Connection refused: connect
    at org.wso2.carbon.databridge.agent.endpoint.binary.BinarySecureClientPoolFactory.createClient(BinarySecureClientPoolFactory.java:58)
    at org.wso2.carbon.databridge.agent.client.AbstractClientPoolFactory.makeObject(AbstractClientPoolFactory.java:39)
    at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1212)
    at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:92)
    ... 6 more
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)

Can any one help me to fix this?I am just using WSO2 API Manager alone

Answer 1

This exceptions shows that connection made to APIM-Publisher URL is not from authenticated client.

To resolve this issue you have to import your created < new-keystore-name >.jks's public certificate to $Server_Home/repository/resources/security/client-truststore.jks file. client-truststore.jks contains the certificate entries, so that client side can use it to talk with the back end.

Follow the below steps.

Export the public certificate to a .pem file keytool -export -alias wso2carbon -keystore wso2carbon.jks -file publickey.pem

The above command, go through the wso2carbon.jks keystore and check for entry with ‘wso2carbon’. When find it, copy the public certificate in that entry to publickey.pem file.

Import the .pem file to client-truststore.jks. keytool -import -alias wso2 -file publickey.pem -keystore client-truststore.jks -storepass wso2carbon

Answer 2

Possibly you have changed the password of the "admin" user from the console and you have not changed it in the deployment.toml associated with the superadmin.

Doing this I solve it