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com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Too 
 many connections	at com.mysql.jdbc.Util.handleNewInstance(Util.java:389)	at com.mysql.jdbc.Util.getInstance(Util.java:372)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:958)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3835)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3771)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870)	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659)	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206)	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2239)	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2270)	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2069)	at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:794)	at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:44)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:389)	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399)	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)	at java.sql.DriverManager.getConnection(DriverManager.java:571)	at java.sql.DriverManager.getConnection(DriverManager.java:187)	at rundeck.services.DbStorageService.listDirectory(DbStorageService.groovy:183)	at com.dtolabs.rundeck.core.storage.ResolvedExtTree.listDirectory(ResolvedExtTree.java:62)	at org.rundeck.storage.impl.DelegateTree.listDirectory(DelegateTree.java:55)	at org.rundeck.storage.impl.DelegateTree.listDirectory(DelegateTree.java:55)	at org.rundeck.storage.conf.ListenerTree.listDirectory(ListenerTree.java:81)	at org.rundeck.storage.impl.DelegateTree.listDirectory(DelegateTree.java:55)	at org.rundeck.storage.impl.DelegateTree.listDirectory(DelegateTree.java:55)	at org.rundeck.storage.impl.StringToPathTree.listDirectory(StringToPathTree.java:50)	at rundeck.services.ConfigStorageService.$tt__listDirPaths(ConfigStorageService.groovy:55)	at rundeck.services.AuthorizationService.loadStoredPolicies(AuthorizationService.groovy:133)	at rundeck.services.AuthorizationService.getStoredPolicies(AuthorizationService.groovy:116)	at rundeck.services.AuthorizationService.getRoleList(AuthorizationService.groovy:66)	at rundeck.services.FrameworkService.getFrameworkRoles(FrameworkService.groovy:654)	at org.rundeck.web.infosec.ContainerRoleSource.getUserRoles(ContainerRoleSource.groovy:19)	at rundeck.filters.AuthorizationFilters$_createAuthSubject_closure2.doCall(AuthorizationFilters.groovy:166)	at rundeck.filters.AuthorizationFilters.createAuthSubject(AuthorizationFilters.groovy:164)	at rundeck.filters.AuthorizationFilters$_closure1_closure4_closure7.doCall(AuthorizationFilters.groovy:63)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1360)	at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:198)	at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:477)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:539)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:288)	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:115)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at com.codahale.metrics.servlet.AbstractInstrumentedFilter.doFilter(AbstractInstrumentedFilter.java:97)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at com.google.servlet.GoogleSsoFilter.doFilter(GoogleSsoFilter.java:106)	at com.google.servlet.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:30)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:477)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:521)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)	at org.eclipse.jetty.server.Server.handle(Server.java:349)	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:910)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)	at java.lang.Thread.run(Thread.java:745)