ActiveMQ Service unavailable

Markus Kehrer

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Oct 18, 2018, 3:24:56 AM10/18/18

to Opencast Users

Hello everybody,

i'm new to this group and also new in the field of opencast. I'm studying computer science and media in a german university and need to get the new opencast version running on a testserver for my team.

I installed the opencast version 5.1 and got it running on a ubuntu 14.04 system. Everything works fine and i can access my opencast installation over the network.

But everytime i open up opencast ,there is a error message telling me "ActiveMQ Service unavailable", altough i installed it too. When i try to get ActiveMQ Broker to run with

$ sudo activemq start

the system tells me it is not running, altough it works when i type in

$ sudo activemq restart

Does anybody know this error and can provide me with some help?

Thanks very much in advance.

Markus Kehrer

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Oct 18, 2018, 3:29:52 AM10/18/18

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btw, my console output is this:

VM1157:1 GET http://141.64.64.100/info/me.json 404 (Not Found)

VM1157:1 GET http://141.64.64.100/broker/status 503 (Service Unavailable)

fdsb.PNG

Maxime Pedrotti

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Oct 18, 2018, 3:34:10 AM10/18/18

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Hi,

Unless you compiled ActiveMQ yourself, it should be installed via the package manager, and subsequently registered as a service with systemd, which means you would not start it directly, but rather like this:

$ systemctl restart activemq

You can then check the status of the service by calling:

$ systemctl status activemq

and get systemd log with journalctl:

$ journalctl -u activemq

The same goes for Opencast, the DB server (e.g. MariaDB), and a proxy web server you might have (e.g. nginx or Apache), with the unit names adjusted accordingly, of course.

Best,

Maxime

Maxime Pedrotti

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Oct 18, 2018, 3:42:49 AM10/18/18

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Sorry, missed a point, I just remembered that systemd may not be the default in 14.04...

The commands to start up the service and check the status might thus be different:

$ sudo service activemq restart

and

$ sudo service activemq status

Message logs should then be located somewhere under /var/log/ either in a subdirectory for activemq, or in the central messages log (which will be crowded with messages from other parts of the OS, however).

Opencast logs are usually in /var/log/opencast/ and could be helpful, as well.

Message has been deleted

Markus Kehrer

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Oct 18, 2018, 4:13:03 AM10/18/18

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Thanks for the fast help. Altough the command seems to operate something, the output is still an error. I dont really get this:

activemq.service - Messaging and Integration Patterns provider

Loaded: loaded (/etc/systemd/system/activemq.service; disabled; vendor preset: enable

Active: failed (Result: exit-code) since Do 2018-10-18 10:10:46 CEST; 9s ago

Process: 21831 ExecStart=/usr/bin/activemq console (code=exited, status=1/FAILURE)

Main PID: 21831 (code=exited, status=1/FAILURE)

Okt 18 10:10:46 teacher activemq[21831]: at java.lang.reflect.Method.invoke(Meth

Okt 18 10:10:46 teacher activemq[21831]: at org.apache.activemq.console.Main.run

Okt 18 10:10:46 teacher activemq[21831]: at org.apache.activemq.console.Main.mai

Okt 18 10:10:46 teacher activemq[21831]: Caused by: java.io.FileNotFoundException: class

Okt 18 10:10:46 teacher activemq[21831]: at org.springframework.core.io.ClassPat

Okt 18 10:10:46 teacher activemq[21831]: at org.springframework.beans.factory.xm

Okt 18 10:10:46 teacher activemq[21831]: ... 24 more

Okt 18 10:10:46 teacher systemd[1]: activemq.service: Main process exited, code=exited,

Okt 18 10:10:46 teacher systemd[1]: activemq.service: Unit entered failed state.

Okt 18 10:10:46 teacher systemd[1]: activemq.service: Failed with result 'exit-code'.

Maxime Pedrotti

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Oct 18, 2018, 4:25:19 AM10/18/18

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At first glance at the last few lines it would seem some file is missing for ActiveMQ to start up correctly. The output from the status call is cut off, however, you may have to check the output from

$ journalctl -u activemq

maybe post a few more blocks up to the actual error. Stack traces from applications like ActiveMQ or Opencast tend to be very long, often the most useful information point is at the top, where the actual exception is named.

Also: Did you check (and double-check) you went through all the steps described in the docs for the ActiveMQ configuration (https://docs.opencast.org/r/5.x/admin/configuration/message-broker/)?

I had some trouble setting up the message broker (and other parts of Opencast) the first time, as well, sometimes it is easy to miss some setting or adjustment. :)

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Markus Kehrer

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Oct 18, 2018, 4:33:33 AM10/18/18

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Thansk Maxime. I think i went trough all the configuration steps, but maybe i will jsut do that again. Thanks for the suggestion.

And here ist output from the journalctl cmd:

teacher@teacher:/opt/activemq/bin$ journalctl -u activemq

-- Logs begin at So 2018-10-14 16:32:13 CEST, end at Do 2018-10-18 10:28:36 CEST. --

Okt 18 10:06:25 teacher systemd[1]: Stopped Messaging and Integration Patterns provider.

Okt 18 10:06:25 teacher systemd[1]: Started Messaging and Integration Patterns provider.

Okt 18 10:06:25 teacher activemq[21293]: INFO: Loading '/etc/default/activemq'

Okt 18 10:06:25 teacher activemq[21293]: INFO: Using java '/usr/bin/java'

Okt 18 10:06:25 teacher activemq[21293]: INFO: Starting in foreground, this is just for

Okt 18 10:06:25 teacher activemq[21293]: INFO: Creating pidfile /usr/share/activemq//dat

Okt 18 10:06:25 teacher activemq[21293]: Java Runtime: Oracle Corporation 1.8.0_181 /usr

Okt 18 10:06:25 teacher activemq[21293]: Heap sizes: current=121856k free=120586k ma

Okt 18 10:06:25 teacher activemq[21293]: JVM args: -Djava.util.logging.config.file=l

Okt 18 10:06:25 teacher activemq[21293]: Extensions classpath:

Okt 18 10:06:25 teacher activemq[21293]: [/usr/share/activemq/lib,/usr/share/activemq/

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_HOME: /usr/share/activemq

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_BASE: /usr/share/activemq

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_CONF: /usr/share/activemq/conf

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_DATA: /usr/share/activemq/data

Okt 18 10:06:25 teacher activemq[21293]: Loading message broker from: xbean:activemq.xml

Okt 18 10:06:25 teacher activemq[21293]: ERROR: java.lang.RuntimeException: Failed to ex

Okt 18 10:06:25 teacher activemq[21293]: java.lang.RuntimeException: Failed to execute s

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.

Okt 18 10:06:25 teacher activemq[21293]: at sun.reflect.NativeMethodAccessorImpl

Okt 18 10:06:25 teacher activemq[21293]: at sun.reflect.DelegatingMethodAccessor

Okt 18 10:06:25 teacher activemq[21293]: at java.lang.reflect.Method.invoke(Meth

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.Main.run

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.Main.mai

Okt 18 10:06:25 teacher activemq[21293]: Caused by: org.springframework.beans.factory.Be

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.beans.factory.xm

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.Reso

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.context.support.

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.Reso

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.xbean.XBeanBroke

lines 1-41...skipping...

-- Logs begin at So 2018-10-14 16:32:13 CEST, end at Do 2018-10-18 10:28:36 CEST. --

Okt 18 10:06:25 teacher systemd[1]: Stopped Messaging and Integration Patterns provider.

Okt 18 10:06:25 teacher systemd[1]: Started Messaging and Integration Patterns provider.

Okt 18 10:06:25 teacher activemq[21293]: INFO: Loading '/etc/default/activemq'

Okt 18 10:06:25 teacher activemq[21293]: INFO: Using java '/usr/bin/java'

Okt 18 10:06:25 teacher activemq[21293]: INFO: Starting in foreground, this is just for debugging purposes (stop process by pressing CTRL+C)

Okt 18 10:06:25 teacher activemq[21293]: INFO: Creating pidfile /usr/share/activemq//data/activemq.pid

Okt 18 10:06:25 teacher activemq[21293]: Java Runtime: Oracle Corporation 1.8.0_181 /usr/lib/jvm/java-8-openjdk-amd64/jre

Okt 18 10:06:25 teacher activemq[21293]: Heap sizes: current=121856k free=120586k max=1791488k

Okt 18 10:06:25 teacher activemq[21293]: JVM args: -Djava.util.logging.config.file=logging.properties -Djava.security.auth.login.config=/usr/share/activemq//conf/login.config -Djava.awt.headles

Okt 18 10:06:25 teacher activemq[21293]: Extensions classpath:

Okt 18 10:06:25 teacher activemq[21293]: [/usr/share/activemq/lib,/usr/share/activemq/lib/camel,/usr/share/activemq/lib/optional,/usr/share/activemq/lib/web,/usr/share/activemq/lib/extra]

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_HOME: /usr/share/activemq

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_BASE: /usr/share/activemq

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_CONF: /usr/share/activemq/conf

Okt 18 10:06:25 teacher activemq[21293]: ACTIVEMQ_DATA: /usr/share/activemq/data

Okt 18 10:06:25 teacher activemq[21293]: Loading message broker from: xbean:activemq.xml

Okt 18 10:06:25 teacher activemq[21293]: ERROR: java.lang.RuntimeException: Failed to execute start task. Reason: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing

Okt 18 10:06:25 teacher activemq[21293]: java.lang.RuntimeException: Failed to execute start task. Reason: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML do

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:91)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:63)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:154)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:63)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:104)

Okt 18 10:06:25 teacher activemq[21293]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

Okt 18 10:06:25 teacher activemq[21293]: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

Okt 18 10:06:25 teacher activemq[21293]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

Okt 18 10:06:25 teacher activemq[21293]: at java.lang.reflect.Method.invoke(Method.java:498)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.Main.runTaskClass(Main.java:262)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.Main.main(Main.java:115)

Okt 18 10:06:25 teacher activemq[21293]: Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [activemq.xml]; nested

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:344)

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.ResourceXmlApplicationContext.loadBeanDefinitions(ResourceXmlApplicationContext.java:111)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.ResourceXmlApplicationContext.loadBeanDefinitions(ResourceXmlApplicationContext.java:104)

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:614)

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:515)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:64)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:52)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.xbean.XBeanBrokerFactory$1.<init>(XBeanBrokerFactory.java:104)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.xbean.XBeanBrokerFactory.createApplicationContext(XBeanBrokerFactory.java:104)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:67)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:71)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54)

Okt 18 10:06:25 teacher activemq[21293]: at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:87)

Okt 18 10:06:25 teacher activemq[21293]: ... 10 more

Okt 18 10:06:25 teacher activemq[21293]: Caused by: java.io.FileNotFoundException: class path resource [activemq.xml] cannot be opened because it does not exist

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)

Okt 18 10:06:25 teacher activemq[21293]: at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:330)

Okt 18 10:06:25 teacher activemq[21293]: ... 24 more

Maxime Pedrotti

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Oct 18, 2018, 4:44:58 AM10/18/18

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OK, so from this output the application cannot find the central configuration file (which should be /etc/activemq/activemq.xml). If you followed the steps from the docs, you should have started with a copy of Opencast's sample configuration, and adjusted some settings to make ActiveMQ accessible to Opencast.

Can you check that the config file is actually at /etc/activemq/activemq.xml and contains all adjustments mentioned in the configuration guide from the docs?

Markus Kehrer

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Oct 22, 2018, 7:37:29 AM10/22/18

to Opencast Users

Thanks Maxime for the help.

It helped me a lot. I figured i copied the config file into the wrong directory. Now ActiveMQ is running fine.

Opencast also seems to run now, altough i can not upload videos by now and the menu is not doing anything, but i guess is just have to go trough the opencast configuration doc as soon as possible.

Thanks a lot again.

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