v5.0.1 stalled startup on ubuntu 14.04.3 x64

[kotinkarwak]

Running server on digitalocean and getting intermittent start problems.
More often than not, the startup fails. spec of machine is 1GB Ram

Starting up using "service ebase-ufs start" only shows this portion of log

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S T A R T I N G   T H E   E B A S E   S E R V E R


Using CATALINA_BASE:   /home/ebaseXi64/UfsServer/tomcat
Using CATALINA_HOME:   /home/ebaseXi64/UfsServer/tomcat
Using CATALINA_TMPDIR: /home/ebaseXi64/UfsServer/tomcat/temp
Using JRE_HOME:        /home/ebaseXi64/UfsServer/../jre
Using CLASSPATH:       /home/ebaseXi64/UfsServer/tomcat/bin/bootstrap.jar:/home/ebaseXi64/UfsServer/tomcat/bin/tomcat-juli.jar
Tomcat started.
Listening for transport dt_socket at address: 8000

Doesn't proceed to start the server. How to troubleshoot this.
I have looked at the processes running and see the following. Ihave checked to confirm each path mentioned exists and apart from

/home/ebaseXi64/UfsServer/tomcat/endorsed

the rest are ok.

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root      1437     1 17 13:08 pts/1    00:00:10 /home/ebaseXi64/UfsServer/../jre/bin/java -Djava.util.logging.config.file=/home/ebaseXi64/UfsServer/tomcat/co
nf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Dxr.util-logging.loggingEnabled=true -Duser.timezone=UCT -Djava.awt.
headless=true -Djava.security.auth.login.config=/home/ebaseXi64/UfsServer/conf/ebaselogin.config -Dmail.mime.charset=ISO-8859-1 -Dderby.system.home=/home/eba
seXi64/UfsServer/DB -Dhttp.nonProxyHosts=localhost|127.0.0.1 -Djava.server=ufs -Dfile.encoding=UTF-8 -server -XX:+CMSClassUnloadingEnabled -Xms1024m -Xmx1024
m -XX:NewSize=512m -XX:MaxNewSize=512m -XX:+DisableExplicitGC -Xdebug -Dnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,address=8000,susp
end=n -Djava.endorsed.dirs=/home/ebaseXi64/UfsServer/tomcat/endorsed -classpath /home/ebaseXi64/UfsServer/tomcat/bin/bootstrap.jar:/home/ebaseXi64/UfsServer/
tomcat/bin/tomcat-juli.jar -Dcatalina.base=/home/ebaseXi64/UfsServer/tomcat -Dcatalina.home=/home/ebaseXi64/UfsServer/tomcat -Djava.io.tmpdir=/home/ebaseXi64
/UfsServer/tomcat/temp org.apache.catalina.startup.Bootstrap start

[Jon]

Check the log files for errors. Your post doesn't actually contain any errors. It could be that the server is starting, but that it's extremely slow. My initial reaction is that 1GB is not that much to contain the operating system, Ebase + database. You may need more memory. You want to avoid swapping at all costs i.e. where the virtual memory exceeds the physical memory. If I'm right, then your server will eventually start, it might just take a long time.

[kotinkarwak]

My luck! Have another machine 1GB, ebase, oracle, VNC running happily, this one only ebase and throws a tantrum . Have upped the memory for server and now starts fine.



Spoke too soon. A reboot of box returns us to no start position. oops:

[kotinkarwak]

Jon,
When you have time to spare please try the install on DO, I think something is amiss since I have done this on several boxed today and appears the server starts ok only at the initial time during the install process and after that, it becomes unpredictable. 2GB boxes and experiencing similar scenario

File used: EbaseXi_5_0_1-x64.tar.gz
Linux: Ubuntu 14.04.3 x64

[Ian]

OK I have been able to reproduce (and fix) this.
I created a new DigitalOcean server with 2GB ram.
Installed Ebase V5 and was able to start and stop it twice before it hung.

After that even rebooting it would not allow me to start the server.


For me the issue was to do with a setting in the <b>java.security file</b>.
This file is located in the shipped <b>jre/security</b> directory.

There is a section that looks like this:

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# In addition, if "file:/dev/random" or "file:/dev/urandom" is
# specified, the "NativePRNG" implementation will be more preferred than
# SHA1PRNG in the Sun provider.
#
securerandom.source=file:/dev/./random

This is what is should look like

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# In addition, if "file:/dev/random" or "file:/dev/urandom" is
# specified, the "NativePRNG" implementation will be more preferred than
# SHA1PRNG in the Sun provider.
#
securerandom.source=file:/dev/./urandom

Notice that the word should have been urandom and not random

Having made this change I can now start and stop the server as many times as I like.

Please let me know if this fixes the issue for you as well.


ian
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[kotinkarwak]

Thanks Ian,
Can confirm that my server is now behaving after making the suggested change.
Testing spec is 1GB.

Suggest that the document currently available for install on digitalocean be updated to take into account the versions being deployed as well as a portion for MySQL install alongside oracle.

Let me dash off and try n' break something else .
Thanks again Ian and Jon.

[Ian]

I have already started to update the DigitalOcean document to take into account what we have found today.
I will also add in a section regarding Ebase versions and on how to install MySql and get it working with Ebase.

Email me your details (ian.bramford@ebasetech.com) and I will send you a copy once it is complete.


Ian