java.util.concurrent.RejectedExecutionException at server start

[schragman]

I am fairly new to wildfly and I barly have any experience with Ubuntu. I have tried to install wildfly in version 16.0.0.Final onto Ubuntu 18.04 LTS using the instructions given by Install and Configure Wildfly (JBoss) on Ubuntu 18.04 LTS . It all worked fine on a local Ubuntu which I installed on virtual box. But when I try to install it on a rented server I'll get a java.util.concurrent.RejectedExecutionException.
Does anyone has an idea what went wrong?
When I enter the command sudo systemctl status wildfly I'll get the following message:

● wildfly.service - The WildFly Application Server

   Loaded: loaded (/etc/systemd/system/wildfly.service; disabled; vendor preset: enabled)

   Active: failed (Result: exit-code) since Wed 2019-07-24 16:50:25 CEST; 19min ago

  Process: 8351 ExecStart=/opt/wildfly/bin/launch.sh $WILDFLY_MODE $WILDFLY_CONFIG $WILDFLY_BIND (code=exited, status=1/FAILURE)

Main PID: 8351 (code=exited, status=1/FAILURE)

Jul 24 16:50:22 h2830632.stratoserver.net systemd[1]: Started The WildFly Application Server.

Jul 24 16:50:25 h2830632.stratoserver.net systemd[1]: wildfly.service: Main process exited, code=exited, status=1/FAILURE

Jul 24 16:50:25 h2830632.stratoserver.net systemd[1]: wildfly.service: Failed with result 'exit-code'.

I then tried to make any sense of the server log with cat /opt/wildfly-16.0.0.Final/standalone/log/server.log

2019-07-24 16:50:23,357 INFO  [org.jboss.modules] (main) JBoss Modules version 1.9.0.Final

2019-07-24 16:50:24,056 WARN  [org.jboss.as.server] (main) WFLYSRV0266: Server home is set to '/opt/wildfly/standalone', but server real home is '/opt/wildfly-16.0.0.Final/standalone' - unpredictable results may occur.

2019-07-24 16:50:24,090 INFO  [org.jboss.msc] (main) JBoss MSC version 1.4.5.Final

2019-07-24 16:50:24,097 INFO  [org.jboss.threads] (main) JBoss Threads version 2.3.3.Final

2019-07-24 16:50:24,313 INFO  [org.jboss.as] (MSC service thread 1-1) WFLYSRV0049: WildFly Full 16.0.0.Final (WildFly Core 8.0.0.Final) starting

2019-07-24 16:50:24,315 DEBUG [org.jboss.as.config] (MSC service thread 1-1) Configured system properties:

        [Standalone] =

        awt.toolkit = sun.awt.X11.XToolkit

        file.encoding = UTF-8

        file.separator = /

        java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment

        java.awt.headless = true

        java.awt.printerjob = sun.print.PSPrinterJob

        java.class.path = /opt/wildfly/jboss-modules.jar

        java.class.version = 55.0

        java.home = /usr/lib/jvm/java-11-openjdk-amd64

        java.io.tmpdir = /tmp

        java.library.path = /usr/java/packages/lib:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib

        java.net.preferIPv4Stack = true

        java.runtime.name = OpenJDK Runtime Environment

        java.runtime.version = 11.0.3+7-Ubuntu-1ubuntu218.04.1

        java.specification.name = Java Platform API Specification

        java.specification.vendor = Oracle Corporation

        java.specification.version = 11

        java.util.logging.manager = org.jboss.logmanager.LogManager

        java.vendor = Oracle Corporation

        java.vendor.url = http://java.oracle.com/

        java.vendor.url.bug = http://bugreport.java.com/bugreport/

        java.version = 11.0.3

        java.version.date = 2019-04-16

        java.vm.compressedOopsMode = 32-bit

        java.vm.info = mixed mode, sharing

        java.vm.name = OpenJDK 64-Bit Server VM

        java.vm.specification.name = Java Virtual Machine Specification

        java.vm.specification.vendor = Oracle Corporation

        java.vm.specification.version = 11

        java.vm.vendor = Oracle Corporation

        java.vm.version = 11.0.3+7-Ubuntu-1ubuntu218.04.1

        javax.management.builder.initial = org.jboss.as.jmx.PluggableMBeanServerBuilder

        jboss.bind.address = 0.0.0.0

        jboss.home.dir = /opt/wildfly

        jboss.host.name = h2830632

        jboss.modules.dir = /opt/wildfly/modules

        jboss.modules.system.pkgs = org.jboss.byteman

        jboss.node.name = h2830632

        jboss.qualified.host.name = h2830632.stratoserver.net

        jboss.server.base.dir = /opt/wildfly-16.0.0.Final/standalone

        jboss.server.config.dir = /opt/wildfly-16.0.0.Final/standalone/configuration

        jboss.server.data.dir = /opt/wildfly-16.0.0.Final/standalone/data

        jboss.server.deploy.dir = /opt/wildfly-16.0.0.Final/standalone/data/content

        jboss.server.log.dir = /opt/wildfly-16.0.0.Final/standalone/log

        jboss.server.name = h2830632

        jboss.server.persist.config = true

        jboss.server.temp.dir = /opt/wildfly-16.0.0.Final/standalone/tmp

        jdk.debug = release

        line.separator =

        logging.configuration = file:/opt/wildfly/standalone/configuration/logging.properties

        module.path = /opt/wildfly/modules

        org.jboss.boot.log.file = /opt/wildfly/standalone/log/server.log

        org.jboss.resolver.warning = true

        os.arch = amd64

        os.name = Linux

        os.version = 4.15.0

        path.separator = :

        sun.arch.data.model = 64

        sun.boot.library.path = /usr/lib/jvm/java-11-openjdk-amd64/lib

        sun.cpu.endian = little

        sun.cpu.isalist =

        sun.io.unicode.encoding = UnicodeLittle

        sun.java.command = /opt/wildfly/jboss-modules.jar -mp /opt/wildfly/modules org.jboss.as.standalone -Djboss.home.dir=/opt/wildfly -Djboss.server.base.dir=/opt/wildfly/standalone -c standalone.xml -b 0.0.0.0

        sun.java.launcher = SUN_STANDARD

        sun.jnu.encoding = UTF-8

        sun.management.compiler = HotSpot 64-Bit Tiered Compilers

        sun.os.patch.level = unknown

        user.country = DE

        user.dir = /

        user.home = /opt/wildfly

        user.language = de

        user.name = wildfly

        user.timezone = Europe/Berlin

2019-07-24 16:50:24,319 DEBUG [org.jboss.as.config] (MSC service thread 1-1) VM Arguments: -D[Standalone] -Xms64m -Xmx512m -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED --add-exports=jdk.unsupported/sun.reflect=ALL-UNNAMED --add-modules=java.se -Dorg.jboss.boot.log.file=/opt/wildfly/standalone/log/server.log -Dlogging.configuration=file:/opt/wildfly/standalone/configuration/logging.properties

2019-07-24 16:50:24,963 ERROR [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0055: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: WFLYCTL0085: Failed to parse configuration

        at [e-mail]//org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:145)

        at [e-mail]//org.jboss.as.server.ServerService.boot(ServerService.java:385)

        at [e-mail]//org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:374)

        at java.base/java.lang.Thread.run(Thread.java:834)

Caused by: java.util.concurrent.RejectedExecutionException

        at [e-mail]//org.jboss.threads.RejectingExecutor.execute(RejectingExecutor.java:37)

        at [e-mail]//org.jboss.threads.EnhancedQueueExecutor.rejectException(EnhancedQueueExecutor.java:1999)

        at [e-mail]//org.jboss.threads.EnhancedQueueExecutor.doStartThread(EnhancedQueueExecutor.java:1619)

        at [e-mail]//org.jboss.threads.EnhancedQueueExecutor.execute(EnhancedQueueExecutor.java:751)

        at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)

        at [e-mail]//org.jboss.as.controller.parsing.DeferredExtensionContext.load(DeferredExtensionContext.java:77)

        at [e-mail]//org.jboss.as.server.parsing.StandaloneXml_10.readServerElement(StandaloneXml_10.java:237)

        at [e-mail]//org.jboss.as.server.parsing.StandaloneXml_10.readElement(StandaloneXml_10.java:137)

        at [e-mail]//org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:126)

        at [e-mail]//org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:52)

        at [e-mail]//org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:122)

        at [e-mail]//org.jboss.staxmapper.XMLMapperImpl.parseDocument(XMLMapperImpl.java:76)

        at [e-mail]//org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:126)

        ... 3 more

        Suppressed: java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached

                at java.base/java.lang.Thread.start0(Native Method)

                at java.base/java.lang.Thread.start(Thread.java:803)

                at [e-mail]//org.jboss.threads.JBossThread.start(JBossThread.java:507)

                at [e-mail]//org.jboss.threads.EnhancedQueueExecutor.doStartThread(EnhancedQueueExecutor.java:1615)

                ... 13 more

2019-07-24 16:50:25,060 FATAL [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0056: Server boot has failed in an unrecoverable manner; exiting. See previous messages for details.

I anyone knows what could be the problem, I'd be very grateful for feedback.

Thanks

Michael

[jaikiran]

But when I try to install it on a rented server I'll get a

Suppressed: java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached

Are you sure the rented server provides/reserves you enough resources to start the server? This looks like some kind of throttling at the server level.

[schragman]

Hello Jaikiran, 

thank you for your reply. I was thinking the same thing. The server I am renting is a virtual server from strato.de which guaranties at least 4 GB Ram, 2 vCore CPUs and 300 GB diskspace. On my virtual box I did not even provide 4 GB ram, less diskspace and it worked. The server from strato is freshly installed and nothing else is running on it yet. There might be adjustments necessary on the serverside but my knowledge about Ubuntu and linux is very limited.

[jaikiran]

You might have to get in touch with your server provider to try and understand what kind of restricting on resources are in place here. This looks very much a hosting issue.

[heinebold]

Did you solve this? I'm having the exact same problem too with WIldfly on a strato box.