LDAP even it worked successfully after any restart, then after a while, it stopped.

LDAP even it worked successfully after any restart, then after a while, it stopped.

The it reworked again,

ERROR 20 Nov 2016 16:10:28 org.joget.plugin.ldap.UserDaoLDAPImpl - org.springframework.ldap.CommunicationException: fastlink.com
.jo:389; nested exception is javax.naming.CommunicationException: fastlink.com.jo:389 [Root exception is java.net.ConnectExceptio
n: Connection timed out: connect]
org.springframework.ldap.CommunicationException: fastlink.com.jo:389; nested exception is javax.naming.CommunicationException: fa
stlink.com.jo:389 [Root exception is java.net.ConnectException: Connection timed out: connect]
at org.springframework.ldap.support.LdapUtils.convertLdapException(LdapUtils.java:108)
at org.springframework.ldap.core.support.AbstractContextSource.createContext(AbstractContextSource.java:356)
at org.springframework.ldap.core.support.AbstractContextSource.doGetContext(AbstractContextSource.java:140)
at org.springframework.ldap.core.support.AbstractContextSource.getReadOnlyContext(AbstractContextSource.java:159)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:357)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:309)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:616)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:586)
at org.springframework.ldap.core.LdapTemplate.search(LdapTemplate.java:474)
at org.joget.plugin.ldap.UserDaoLDAPImpl.getUser(UserDaoLDAPImpl.java:116)
at org.joget.plugin.ldap.DirectoryManagerLDAPImpl.getUserByUsername(DirectoryManagerLDAPImpl.java:247)
at org.joget.plugin.ldap.DirectoryManagerLDAPImpl.getUserRoles(DirectoryManagerLDAPImpl.java:281)
at org.joget.directory.ext.DirectoryManagerAuthenticatorImpl.authenticate_aroundBody10(DirectoryManagerAuthenticatorImpl.
java:146)
at org.joget.directory.ext.DirectoryManagerAuthenticatorImpl.authenticate_aroundBody11$advice(DirectoryManagerAuthenticat
orImpl.java:94)
at org.joget.directory.ext.DirectoryManagerAuthenticatorImpl.authenticate(DirectoryManagerAuthenticatorImpl.java:1)
at org.joget.directory.model.service.DirectoryManagerProxyImpl.authenticate(DirectoryManagerProxyImpl.java:321)
at org.joget.apps.workflow.security.WorkflowAuthenticationProvider.authenticate(WorkflowAuthenticationProvider.java:57)
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:167)
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:192)
at org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter.attemptAuthentication(UsernamePas
swordAuthenticationFilter.java:93)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthentication
ProcessingFilter.java:217)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManag
erIntegrationFilter.java:53)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.ja
va:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
at org.joget.commons.spring.web.CustomDelegatingFilterProxy.doFilter(CustomDelegatingFilterProxy.java:30)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.joget.apps.app.web.ExpireFilter.doFilter(ExpireFilter.java:43)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.naming.CommunicationException: fastlink.com.jo:389 [Root exception is java.net.ConnectException: Connection time
d out: connect]
at com.sun.jndi.ldap.Connection.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapClient.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapClient.getInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.ldap.InitialLdapContext.<init>(Unknown Source)
at org.springframework.ldap.core.support.LdapContextSource.getDirContextInstance(LdapContextSource.java:42)
at org.springframework.ldap.core.support.AbstractContextSource.createContext(AbstractContextSource.java:344)
... 60 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at com.sun.jndi.ldap.Connection.createSocket(Unknown Source)
... 75 more
INFO 20 Nov 2016 16:10:28 org.joget.plugin.ldap.UserDaoLDAPImpl - User:k2admin is LDAP admin.
INFO 20 Nov 2016 16:10:28 org.joget.apps.workflow.security.WorkflowAuthenticationProvider - Authentication for user k2admin: tr
ue
INFO 20 Nov 2016 16:10:28 org.joget.plugin.ldap.UserDaoLDAPImpl - getUser(username:k2admin)
INFO 20 Nov 2016 16:10:28 org.joget.plugin.ldap.UserDaoLDAPImpl - filter: (&(objectClass=person)(sAMAccountName=k2admin))