Hi Roger,
wait, I've seen what I was looking for after all:

java.lang.UnsupportedClassVersionError:
org/geoserver/GeoserverInitStartupListener : Unsupported major.minor
version 51.0 (unable to load class
org.geoserver.GeoserverInitStartupListener)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2899)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at
org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
at
org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
at
org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4854)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:976)
at
org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1653)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

So yeah, you cannot use java 6 anymore (GeoServer 2.5 was the last release
to support it if memory serves me well),
you need at least java 7, but the above log comes from the
logs2-8-0Java8.zip, which makes me believe your tomcat is not really running
on Java 8 after all

Cheers
Andrea


On Thu, Oct 1, 2015 at 11:10 AM, Andrea Aime <andrea.a...@geo-solutions.it>
wrote:

> Hi Roger,
> I don't see GeoServer own log, to be found in the data directory, under
> logs/geoserver.log
> That's the one I was interested into when I described the procedure to
> gather the full logs :-)
>
> Cheers
> Andrea
>
>
> On Thu, Oct 1, 2015 at 11:07 AM, Roger Bedell <sylvanasc...@gmail.com>
> wrote:
>
>> Hello Andrea,
>> Here are the logs, but I don't think you find much more. This is the
>> problem - very little to go on. However, when I put 2.5.5.1 back in the
>> Tomcat Webapps (the same exact place as I tried 2.8.0), it starts up and
>> runs fine.
>>
>> This got me thinking, why not try the releases since 2.5.5.1?
>>
>> So, I did the following:
>>
>> 1) Started the 2.5.5.1 war with no extensions. - this started fine
>> 2) Same for 2.6.5. Didn't start, but the log has some details about
>> security.
>> 3) Same for 2.7.2 Also didn't start, nothing in the log.
>> 4) And for 2.8.0, same as 2.7.2
>>
>> This made me think about the Java version. On the dev server, we have
>>
>> java version "1.7.0"
>> Java(TM) SE Runtime Environment (build 1.7.0-b147)
>> Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)
>>
>> On the new server, we had JRE-6u43_64bit, but then I upgraded to:
>>
>> java version "1.8.0_60"
>> Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
>> Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)
>>
>> with the same result, no startup for 1.8.0 or 1.6.5 (logs attached also)
>>
>> All the logs for each startup are attached.
>>
>> Thanks for your help,
>> Roger
>>
>>
>> On Thu, Oct 1, 2015 at 9:40 AM, Andrea Aime <andrea.a...@geo-solutions.it
>> > wrote:
>>
>>> Hi Roger,
>>> there is not enough info in the logs you provided. Suggestion:
>>> * clean the log file completely
>>> * restart geoserver, make it fail
>>> * zip the full log file, share it on the list
>>>
>>> Cheers
>>> Andrea
>>>
>>>
>>> On Thu, Oct 1, 2015 at 9:10 AM, Roger Bedell <sylvanasc...@gmail.com>
>>> wrote:
>>>
>>>> Just for completeness, I just tried the 2.8.0 release, and it doesn't
>>>> start either.
>>>> Thanks for your help,
>>>> Roger
>>>>
>>>> On Thu, Oct 1, 2015 at 8:59 AM, Roger Bedell <sylvanasc...@gmail.com>
>>>> wrote:
>>>>
>>>>> Good morning,
>>>>> I just ran into a strange situation:
>>>>>
>>>>> I have been testing 2.8 RC1 on a development server with good results.
>>>>>
>>>>> I then tried to run it on another server, which has the same Tomcat
>>>>> version and has been running 2.5.5.1 happily for some time.
>>>>>
>>>>> 2.8RC1 refuses to start. Very little information in the log files,
>>>>> just this:
>>>>>
>>>>> INFO: Starting service Catalina
>>>>> Oct 1, 2015 1:17:32 AM org.apache.catalina.core.StandardEngine
>>>>> startInternal
>>>>> INFO: Starting Servlet Engine: Apache Tomcat/7.0.42
>>>>> Oct 1, 2015 1:17:32 AM org.apache.catalina.startup.HostConfig deployWAR
>>>>> INFO: Deploying web application archive
>>>>> E:\OGI\Programs\Tomcat\apache-tomcat-GeoServer\webapps\geoserver.war
>>>>> Oct 1, 2015 1:17:38 AM org.apache.catalina.core.StandardContext
>>>>> startInternal
>>>>> SEVERE: Error listenerStart
>>>>>
>>>>> Any hints on what to look for?
>>>>>
>>>>> Thanks,
>>>>> Roger
>>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> Geoserver-users mailing list
>>>> Geoserver-users@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>>>>
>>>>
>>>
>>>
>>> --
>>> ==
>>> GeoServer Professional Services from the experts! Visit
>>> http://goo.gl/it488V for more information.
>>> ==
>>>
>>> Ing. Andrea Aime
>>> @geowolf
>>> Technical Lead
>>>
>>> GeoSolutions S.A.S.
>>> Via Poggio alle Viti 1187
>>> 55054  Massarosa (LU)
>>> Italy
>>> phone: +39 0584 962313
>>> fax: +39 0584 1660272
>>> mob: +39  339 8844549
>>>
>>> http://www.geo-solutions.it
>>> http://twitter.com/geosolutions_it
>>>
>>> *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*
>>>
>>> Le informazioni contenute in questo messaggio di posta elettronica e/o
>>> nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
>>> loro utilizzo è consentito esclusivamente al destinatario del messaggio,
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>>> divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
>>> utilizzarlo per finalità diverse, costituisce comportamento contrario ai
>>> principi dettati dal D.Lgs. 196/2003.
>>>
>>>
>>>
>>> The information in this message and/or attachments, is intended solely
>>> for the attention and use of the named addressee(s) and may be confidential
>>> or proprietary in nature or covered by the provisions of privacy act
>>> (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
>>> Code).Any use not in accord with its purpose, any disclosure, reproduction,
>>> copying, distribution, or either dissemination, either whole or partial, is
>>> strictly forbidden except previous formal approval of the named
>>> addressee(s). If you are not the intended recipient, please contact
>>> immediately the sender by telephone, fax or e-mail and delete the
>>> information in this message that has been received in error. The sender
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>>> e-mail transmission, viruses, etc.
>>>
>>> -------------------------------------------------------
>>>
>>
>>
>
>
> --
> ==
> GeoServer Professional Services from the experts! Visit
> http://goo.gl/it488V for more information.
> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054  Massarosa (LU)
> Italy
> phone: +39 0584 962313
> fax: +39 0584 1660272
> mob: +39  339 8844549
>
> http://www.geo-solutions.it
> http://twitter.com/geosolutions_it
>
> *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*
>
> Le informazioni contenute in questo messaggio di posta elettronica e/o
> nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
> loro utilizzo è consentito esclusivamente al destinatario del messaggio,
> per le finalità indicate nel messaggio stesso. Qualora riceviate questo
> messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
> darcene notizia via e-mail e di procedere alla distruzione del messaggio
> stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
> divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
> utilizzarlo per finalità diverse, costituisce comportamento contrario ai
> principi dettati dal D.Lgs. 196/2003.
>
>
>
> The information in this message and/or attachments, is intended solely for
> the attention and use of the named addressee(s) and may be confidential or
> proprietary in nature or covered by the provisions of privacy act
> (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
> Code).Any use not in accord with its purpose, any disclosure, reproduction,
> copying, distribution, or either dissemination, either whole or partial, is
> strictly forbidden except previous formal approval of the named
> addressee(s). If you are not the intended recipient, please contact
> immediately the sender by telephone, fax or e-mail and delete the
> information in this message that has been received in error. The sender
> does not give any warranty or accept liability as the content, accuracy or
> completeness of sent messages and accepts no responsibility  for changes
> made after they were sent or for other risks which arise as a result of
> e-mail transmission, viruses, etc.
>
> -------------------------------------------------------
>



-- 
==
GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V for more information.
==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054  Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39  339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

*AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*

Le informazioni contenute in questo messaggio di posta elettronica e/o
nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
loro utilizzo è consentito esclusivamente al destinatario del messaggio,
per le finalità indicate nel messaggio stesso. Qualora riceviate questo
messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia via e-mail e di procedere alla distruzione del messaggio
stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
utilizzarlo per finalità diverse, costituisce comportamento contrario ai
principi dettati dal D.Lgs. 196/2003.



The information in this message and/or attachments, is intended solely for
the attention and use of the named addressee(s) and may be confidential or
proprietary in nature or covered by the provisions of privacy act
(Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
Code).Any use not in accord with its purpose, any disclosure, reproduction,
copying, distribution, or either dissemination, either whole or partial, is
strictly forbidden except previous formal approval of the named
addressee(s). If you are not the intended recipient, please contact
immediately the sender by telephone, fax or e-mail and delete the
information in this message that has been received in error. The sender
does not give any warranty or accept liability as the content, accuracy or
completeness of sent messages and accepts no responsibility  for changes
made after they were sent or for other risks which arise as a result of
e-mail transmission, viruses, etc.

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