[keycloak-user] Deploying Keycloak on Openshift with MariaDB persistence produces errors in logs

Skorupa, Sascha Sascha.Skorupa at rwth-aachen.de
Thu Feb 7 07:17:43 EST 2019


Hi,


I had the same problem with Keycloak 4.8.3 Docker Image and Galera Cluster. The problem seems to be in MariaDB Conncetor/J since version 2.2.5. With older versions it worked and with newer versions I need to change the connection-url to sth like this:


jdbc:mariadb:failover://${SOME_URL}/${DB}


jdbc:mariadb:sequential://${SOME_URL}/${DB}


Unfortunately it was not possible to change the protocol part of that URL via Docker env variables, so I had to extend the image with some custom CLI scripts.


Cheers,

sascha

________________________________
Von: keycloak-user-bounces at lists.jboss.org <keycloak-user-bounces at lists.jboss.org> im Auftrag von Cristi Cioriia <cristi.cioriia at gmail.com>
Gesendet: Freitag, 26. Oktober 2018 15:25:09
An: keycloak-user at lists.jboss.org
Betreff: [keycloak-user] Deploying Keycloak on Openshift with MariaDB persistence produces errors in logs

Hello,


While deploying Keycloak 4.5.0.Final in an Openshift environment, using
Mariadb (Galera) as a database produces several exceptions in the logs, all
of them being related to the communication between the Keycloak server and
the database. The access to the Galera server (3 instances) is performed
via a Maxscale proxy. The Galera server, Maxscale (deployment of 3 pods)
and Keycloak (deployment of 2 replicas) are all deployed inside Openshift,
on AWS (1master + 3 workers).


I am hoping you guys can help with fixing these issues.


The errors look like below:



08:40:46,603 WARN
[org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory]
(ConnectionValidator) IJ030027: Destroying connection that is not valid,
due to the following exception: org.mariadb.jdbc.MariaDbConnection at 76883993:
java.sql.SQLNonTransientConnectionException: (conn=24) unexpected end of
stream, read 0 bytes from 4 (socket was closed by server)
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:175)
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:110)
at
org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(MariaDbStatement.java:228)
at
org.mariadb.jdbc.MariaDbStatement.executeInternal(MariaDbStatement.java:334)
at org.mariadb.jdbc.MariaDbStatement.execute(MariaDbStatement.java:386)
at
org.jboss.jca.adapters.jdbc.CheckValidConnectionSQL.isValidConnection(CheckValidConnectionSQL.java:74)
at
org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:1273)
at
org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory.getInvalidConnections(BaseWrapperManagedConnectionFactory.java:1086)
at
org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.validateConnections(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1442)
at
org.jboss.jca.core.connectionmanager.pool.validator.ConnectionValidator$ConnectionValidatorRunner.run(ConnectionValidator.java:277)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLException: unexpected end of stream, read 0 bytes
from 4 (socket was closed by server)
Query is: SELECT 1
at
org.mariadb.jdbc.internal.util.LogQueryTool.exceptionWithQuery(LogQueryTool.java:119)
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:199)
at
org.mariadb.jdbc.MariaDbStatement.executeInternal(MariaDbStatement.java:328)
... 9 more
Caused by: java.io.EOFException: unexpected end of stream, read 0 bytes
from 4 (socket was closed by server)
at
org.mariadb.jdbc.internal.io.input.StandardPacketInputStream.getPacketArray(StandardPacketInputStream.java:239)
at
org.mariadb.jdbc.internal.io.input.StandardPacketInputStream.getPacket(StandardPacketInputStream.java:207)
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.readPacket(AbstractQueryProtocol.java:1347)
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.getResult(AbstractQueryProtocol.java:1328)
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:196)
... 10 more


I suspect that the errors come from the way the jdbc data source is
configured. The mariadb configurations related to connections and wait
timeouts are like below:


max_connections=1000

wait_timeout=180

The second issue I noticed was the following: one of the pods in the
deployments (we deploy 2 replicas of Keycloak) sometimes does not start
correctly because of the following exception, which is still related to the
database connection:


08:13:03,409 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool
-- 52) MSC000001: Failed to start service
jboss.undertow.deployment.default-server.default-host./auth:
org.jboss.msc.service.StartException in service
jboss.undertow.deployment.default-server.default-host./auth:
java.lang.RuntimeException: RESTEASY003325: Failed to construct public
org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at
org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: java.lang.RuntimeException: RESTEASY003325: Failed to construct
public
org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)
at
org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:162)
at
org.jboss.resteasy.spi.ResteasyProviderFactory.createProviderInstance(ResteasyProviderFactory.java:2676)
at
org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:361)
at
org.jboss.resteasy.spi.ResteasyDeployment.startInternal(ResteasyDeployment.java:274)
at
org.jboss.resteasy.spi.ResteasyDeployment.start(ResteasyDeployment.java:86)
at
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:119)
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init(HttpServletDispatcher.java:36)
at
io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117)
at
org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(RunAsLifecycleInterceptor.java:78)
at
io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:103)
at
io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:300)
at
io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:140)
at
io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:584)
at
io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:555)
at
io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
at
io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at
org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:597)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:97)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
... 8 more
Caused by: java.lang.RuntimeException: Failed to connect to database
at
org.keycloak.connections.jpa.DefaultJpaConnectionProviderFactory.getConnection(DefaultJpaConnectionProviderFactory.java:373)
at
org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.lazyInit(LiquibaseDBLockProvider.java:65)
at
org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.lambda$waitForLock$0(LiquibaseDBLockProvider.java:97)
at
org.keycloak.models.utils.KeycloakModelUtils.suspendJtaTransaction(KeycloakModelUtils.java:611)
at
org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.waitForLock(LiquibaseDBLockProvider.java:95)
at
org.keycloak.services.resources.KeycloakApplication$1.run(KeycloakApplication.java:143)
at
org.keycloak.models.utils.KeycloakModelUtils.runJobInTransaction(KeycloakModelUtils.java:227)
at
org.keycloak.services.resources.KeycloakApplication.<init>(KeycloakApplication.java:136)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:150)
... 31 more
Caused by: java.sql.SQLException: javax.resource.ResourceException:
IJ000453: Unable to get managed connection for
java:jboss/datasources/KeycloakDS
at
org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:146)
at
org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
at
org.keycloak.connections.jpa.DefaultJpaConnectionProviderFactory.getConnection(DefaultJpaConnectionProviderFactory.java:367)
... 43 more
Caused by: javax.resource.ResourceException: IJ000453: Unable to get
managed connection for java:jboss/datasources/KeycloakDS
at
org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:690)
at
org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:430)
at
org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:789)
at
org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
... 45 more
Caused by: javax.resource.ResourceException: IJ031084: Unable to create
connection
at
org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:345)
at
org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:352)
at
org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:287)
at
org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1326)
at
org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:499)
at
org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:632)
at
org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:604)
at
org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:624)
... 48 more
Caused by: java.sql.SQLNonTransientConnectionException: could not load
system variables
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:175)
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:110)
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1093)
at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:494)
at
org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:150)
at org.mariadb.jdbc.Driver.connect(Driver.java:86)
at
org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:321)
... 55 more
Caused by: java.sql.SQLNonTransientConnectionException: could not load
system variables
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:175)
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.connException(ExceptionMapper.java:83)
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.readPipelineAdditionalData(AbstractConnectProtocol.java:606)
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:477)
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:1089)
... 59 more
Caused by: java.sql.SQLException: Error reading SessionVariables results.
Socket is connected ? true
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.readRequestSessionVariables(AbstractConnectProtocol.java:572)
at
org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.readPipelineAdditionalData(AbstractConnectProtocol.java:603)
... 61 more

The pod is in state running, but it is not ready, as it can be seen below:


 oc describe pod keycloak-787795bbcb-qng6j
Name:           keycloak-787795bbcb-qng6j
Namespace:      frame-2900
Start Time:     Thu, 25 Oct 2018 10:03:30 +0200
Labels:         application=keycloak
                pod-template-hash=3433516676
Annotations:    openshift.io/scc=restricted
Status:         *Running*
IP:             10.131.0.12
Controlled By:  ReplicaSet/keycloak-787795bbcb
Containers:
  keycloak:
    Container ID:
 docker://b703c13a70ffa24f696e08996590b972ec65e6b6041f8d08f50a44372b9e4760
    Image:          jboss/keycloak
    Image ID:       docker-pullable://
docker.io/jboss/keycloak at sha256:cb5c24d06f22c51ca193e6d1e930d206ef0b841a745f8e475a08e33f10b38ad4
    Ports:          8080/TCP, 8443/TCP
    *State:          Waiting*
*      Reason:       CrashLoopBackOff*
    Last State:     Terminated
      Reason:       Error
      Exit Code:    1
      Started:      Thu, 25 Oct 2018 10:12:43 +0200
      Finished:     Thu, 25 Oct 2018 10:13:03 +0200
    Ready:          False
*    Restart Count:  6*
    Liveness:       http-get http://:8080/auth/realms/master delay=60s
timeout=1s period=10s #success=1 #failure=3
    Readiness:      http-get http://:8080/auth/realms/master delay=30s
timeout=1s period=10s #success=1 #failure=10
    Environment:
      KEYCLOAK_USER:                 BokIm2Kl
      KEYCLOAK_PASSWORD:             o8QobI0D
      PROXY_ADDRESS_FORWARDING:      true
      DB_VENDOR:                     MARIADB
      JGROUPS_DISCOVERY_PROTOCOL:    dns.DNS_PING
      JGROUPS_DISCOVERY_PROPERTIES:
dns_query=keycloak.default.svc.cluster.local
      DB_ADDR:                       max-scale
      DB_DATABASE:                   keycloak
      DB_PORT:                       4408
      DB_USER:                       <set to the key
'keycloakDatabaseUserName' in secret 'qa-complex-secret'>      Optional:
false
      DB_PASSWORD:                   <set to the key
'keycloakDatabaseUserPassword' in secret 'qa-complex-secret'>  Optional:
false
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from
frame-2900-token-k8cwj (ro)
Conditions:
  Type           Status
  Initialized    True
  Ready          False
  PodScheduled   True
Volumes:
  frame-2900-token-k8cwj:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  frame-2900-token-k8cwj
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  node-role.kubernetes.io/compute=true
Tolerations:     <none>
Events:
  Type     Reason                 Age                From
                              Message
  ----     ------                 ----               ----
                              -------
  Normal   Scheduled              11m                default-scheduler
                             Successfully assigned
keycloak-787795bbcb-qng6j to ip-10-0-141-24.eu-west-1.compute.internal
  Normal   SuccessfulMountVolume  11m                kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  MountVolume.SetUp succeeded for
volume "frame-2900-token-k8cwj"
  Normal   Pulled                 7m (x4 over 9m)    kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  Successfully pulled image
"jboss/keycloak"
  Normal   Created                7m (x4 over 9m)    kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  Created container
  Normal   Started                7m (x4 over 9m)    kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  Started container
  Normal   Pulling                6m (x5 over 10m)   kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  pulling image "jboss/keycloak"
  Warning  BackOff                53s (x31 over 8m)  kubelet,
ip-10-0-141-24.eu-west-1.compute.internal  Back-off restarting failed
container

The pod is restarted several times it seems, but it does not start
correctly. I deleted the pod and it was recreated automatically by
Openshift and the new pod started correctly.


Then, there is a third issue that I've encountered while trying to login
into the deployed application. While entering some wrong credentials I got
an error page and noticed in the logs that there is still a database
connection error:


08:18:12,405 WARN  [org.keycloak.services] (default task-2)
KC-SERVICES0013: Failed authentication:
javax.persistence.PersistenceException:
org.hibernate.exception.JDBCConnectionException: could not extract ResultSet
at
org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692)
at
org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602)
at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:492)
at
org.keycloak.models.jpa.JpaUserProvider.getUserByUsername(JpaUserProvider.java:526)
at
org.keycloak.storage.UserStorageManager.getUserByUsername(UserStorageManager.java:390)
at
org.keycloak.models.cache.infinispan.UserCacheSession.getUserByUsername(UserCacheSession.java:253)
at
org.keycloak.models.utils.KeycloakModelUtils.findUserByNameOrEmail(KeycloakModelUtils.java:213)
at
org.keycloak.authentication.authenticators.browser.AbstractUsernameFormAuthenticator.validateUserAndPassword(AbstractUsernameFormAuthenticator.java:153)
at
org.keycloak.authentication.authenticators.browser.UsernamePasswordForm.validateForm(UsernamePasswordForm.java:55)
at
org.keycloak.authentication.authenticators.browser.UsernamePasswordForm.action(UsernamePasswordForm.java:48)
at
org.keycloak.authentication.DefaultAuthenticationFlow.processAction(DefaultAuthenticationFlow.java:113)
at
org.keycloak.authentication.DefaultAuthenticationFlow.processAction(DefaultAuthenticationFlow.java:97)
at
org.keycloak.authentication.AuthenticationProcessor.authenticationAction(AuthenticationProcessor.java:873)
at
org.keycloak.services.resources.LoginActionsService.processFlow(LoginActionsService.java:292)
at
org.keycloak.services.resources.LoginActionsService.processAuthentication(LoginActionsService.java:263)
at
org.keycloak.services.resources.LoginActionsService.authenticate(LoginActionsService.java:259)
at
org.keycloak.services.resources.LoginActionsService.authenticateForm(LoginActionsService.java:320)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
at
org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:510)
at
org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:401)
at
org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$0(ResourceMethodInvoker.java:365)
at
org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:361)
at
org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:367)
at
org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:339)
at
org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:137)
at
org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:100)
at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:441)
at
org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:231)
at
org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:137)
at
org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:361)
at
org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:140)
at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:217)
at
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:227)
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at
io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
at
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at
org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:90)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at
io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at
io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
at
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
at
io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at
io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at
io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
at
io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
at
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
at
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
at
io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at
io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at
org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)
at
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
at
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at
org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at
org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.exception.JDBCConnectionException: could not
extract ResultSet
at
org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:48)
at
org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
at
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)
at
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:79)
at org.hibernate.loader.Loader.getResultSet(Loader.java:2122)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1905)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1881)
at org.hibernate.loader.Loader.doQuery(Loader.java:925)
at
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342)
at org.hibernate.loader.Loader.doList(Loader.java:2622)
at org.hibernate.loader.Loader.doList(Loader.java:2605)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2434)
at org.hibernate.loader.Loader.list(Loader.java:2429)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:501)
at
org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:370)
at
org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1339)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:87)
at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:606)
at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:483)
... 83 more
Caused by: java.sql.SQLNonTransientConnectionException: (conn=476)
Connection is closed
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:175)
at
org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:110)
at
org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(MariaDbStatement.java:228)
at
org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:216)
at
org.mariadb.jdbc.MariaDbPreparedStatementClient.execute(MariaDbPreparedStatementClient.java:150)
at org.mariadb.jdb
c.MariaDbPreparedStatementClient.executeQuery(MariaDbPreparedStatementClient.java:164)
at
org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:504)
at
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70)
... 99 more
Caused by: java.sql.SQLException: Connection is closed
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.cmdPrologue(AbstractQueryProtocol.java:1711)
at
org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:237)
at
org.mariadb.jdbc.MariaDbPreparedStatementClient.executeInternal(MariaDbPreparedStatementClient.java:209)
... 103 more

After a couple of seconds, the issue dissapeared, probably because Keycloak
was able to get a valid connection from the connection pool.


Thanks in advance for your help.


Greetings,

Cristi
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