Can you please doublecheck if it brake something for you or not? In my case this exception was triggered by one of our timer tasks and there were no errors/sideeffects (like nothing to fix :) )
On Thu, Dec 13, 2012 at 4:22 PM, Mikael Kurula <alcar...@gmail.com> wrote: > Aha, very interesting that you now got this problem too. I didn't check if > I could log in again or not, but I do think it broke something in my > situation. Namely, I was recording a session, but when I pushed the stop > recording button, the video was not processed and it didn't show up in the > list of recordings. Instead I just got this error in the log. I am not 100% > sure this is how it all went, because at that time I was so new to OM and > generally too confused about everything to make any sharp observations. > Thanks also for filling in the version number in my e-mail to openjpa! > > > On 13 December 2012 07:33, Maxim Solodovnik <solomax...@gmail.com> wrote: > >> Hello Mikael, >> >> Tonight I perform following test: >> 1) start OM in 5PM >> 2) take a look at the console at 11 AM next day >> Result: >> org.apache.openjpa.persistence.PersistenceException: Communications link >> failure >> >> The last packet successfully received from the server was 32,999,961 >> milliseconds ago. The last packet sent successfull >> y to the server was 2 milliseconds ago. >> .....<stack trace stripped> >> >> Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: >> Communications link failure >> >> The last packet successfully received from the server was 32,999,961 >> milliseconds ago. The last packet sent successfull >> y to the server was 2 milliseconds ago. >> .....<stack trace stripped> >> >> >> 3) I open the browser and was able to successfully connect to OM (login >> etc.) >> I I guess above error can be treated as warning, since it doesn't break >> anything. >> >> Is it your case? Or you are unable to login after such exception? >> >> >> >> On Thu, Dec 13, 2012 at 7:11 AM, Mikael Kurula <alcar...@gmail.com>wrote: >> >>> Dimitri, >>> >>> Thanks a lot for your friendly and constructive message! With your help >>> I now managed to install the libreoffice converter, so now I can import >>> almost any imaginable file format to the whiteboard, which is awesome. :) >>> (The alternative command didn't find Oracle's java on my server, but I >>> changed the symlink to java in /etc/alternatives by hand.) >>> >>> Unfortunately, unlike you (and perhaps most users it seems?), my >>> situation is not that everything "just works"; therefore I ask for help >>> here. I also hope that my questions indicate issues which might need to be >>> addressed before OpenMeetings can be accessible to the wide public; I >>> suppose it is in the interest of the developers to at least be aware of my >>> problems. I'm very surprised if nobody else has these problems. And it says >>> on a page somewhere that the OM project is grateful for any feedback; maybe >>> my questions can be regarded as feedback from a not-quite-so-technical user. >>> >>> I tried looking at the mailing list archive again, but I can't find a >>> way to search per author (or per keyword either for that matter), so I >>> cannot find your earlier posts. If you happen to know the answer to any of >>> my questions in this post, then I'd be most grateful: >>> >>> >>> http://mail-archives.apache.org/mod_mbox/incubator-openmeetings-user/201212.mbox/%3C081FEEE9-ACDF-4E35-B8B4-CA0910711F88%40gmail.com%3E >>> >>> After I wrote that post, I have now found some suggestions for server >>> hardware for OM, but it's still not clear to me if the fact that my server >>> is a single 2 GHz cpu with only 2GB of RAM is connected to my problem 3 or >>> not. We have so far only been testing with one or two clients at once. >>> >>> I had a new look at the installation instructions for CentOS 6 and I >>> installed all the listed packages using yum. I didn't want to follow these >>> instructions earlier, because as I have understood, you shouldn't install >>> software from source outside of your package manager. In Ubuntu it's easy >>> to compile from source with the package manager but in CentOS it seems very >>> complicated; I have tried without success a few times. >>> >>> Desperate to get the recordings to work, I anyway tried installing >>> ffmpeg-0.10.6.tar.bz2 from source (I chose version 0.10.6 because it says >>> in the OpenMeetings installation instructions that OM is tested against >>> ffmpeg 10.3), since my version from the package manager was antique. >>> Unfortunately, that didn't improve anything. I didn't compile flvtools from >>> source, because the package maintainer's version was 0.9.1. >>> >>> Which version of flvtools and ffmpeg are you using if I may ask? What >>> other packages could cause me recording problems? And what are the CPU/RAM >>> specifications of your server? Which version of OM do you use and where did >>> you download it if you have a newer version than 2.0? I downloaded 2.0 from >>> the download page, since I got the impression that is the latest stable >>> version, but I'd be happy to test with newer versions in case there is hope >>> they'd work better for me. >>> >>> Very grateful for any help as usual, >>> Mikael >>> >>> >>> On 12 December 2012 15:56, Dimitri Yioulos <dyiou...@onpointfc.com>wrote: >>> >>>> Mikael, >>>> >>>> This response is more motivational than technical: >>>> >>>> I had no problem at all using OM/LibreOffice with Oracle's >>>> Java. Both OpenJDK and Java 7 are installed on my machine, >>>> but I've made Java 7 the "active" version using the >>>> alternatives command. Likewise, using MySQL works, as does >>>> recording. I'm sure you're searching the mailing list >>>> archive for some guidance (you'll see plenty of shouts for >>>> help from me :-) ). Also, I found that this how-to: >>>> >>>> http://code.google.com/p/openmeetings/wiki/InstallationCentOS5 >>>> >>>> is a good starting point for installing OM on CentOS (5 and >>>> 6). >>>> >>>> What I've found (surprise, surprise) is that you do have to >>>> tweak and test to get everything working just right. I >>>> suppose these are the "rough edges" of the current OM >>>> release. However, this release has come a long way from >>>> earlier ones, which I tried in the way-back. I'm thinking >>>> that future releases will be kick-a**. >>>> >>>> Keep at it; it's worth the effort! >>>> >>>> Dimitri >>>> >>>> >>>> On Wednesday 12 December 2012 8:23:10 am Mikael Kurula >>>> wrote: >>>> > Hi! >>>> > >>>> > I'm also in the process of trying out if OpenMeetings is >>>> > a possible alternative to Adobe Connect, with which I'm >>>> > utterly fed up. >>>> > >>>> > The only problem I had with CentOS is that LibreOffice >>>> > for CentOS 6 depends on OpenJDK whereas OpenMeetings need >>>> > Oracle's Java. Somebody better att juggling with with yum >>>> > probably can probably solve this easily (in which case >>>> > I'd be grateful for help). >>>> > >>>> > Avoiding MySQL sounds like a reasonable idea to me, since >>>> > I ran into this problem: >>>> > https://issues.apache.org/jira/browse/OPENMEETINGS-488 >>>> > (From what I understood this is very rare.) >>>> > >>>> > Right now my only showstopper issues are with recording, >>>> > so I could suggest you check out if the recording >>>> > capabilities are sufficient for your needs. In addition >>>> > to the messages I've posted to the users list, I'm also >>>> > having this problem: >>>> > https://issues.apache.org/jira/browse/OPENMEETINGS-270 >>>> > >>>> > Otherwise OpenMeetings would surely do the job just fine >>>> > for me, so I sincerely hope I can make the recordings >>>> > work, but I need help from the OM experts for that. :) >>>> > >>>> > Friendly greetings, >>>> > Mikael >>>> > >>>> > On 2012.12.12, at 15:09, Nicklas af Ekenstam wrote: >>>> > > Thanks Dimitri, >>>> > > >>>> > > That's helpful nonetheless. I may try both CentOS and >>>> > > Ubuntu then. >>>> > > >>>> > > I also found something which I think answers my >>>> > > somewhat ill articulated question regarding upstream >>>> > > relay servers: >>>> > > https://cwiki.apache.org/confluence/display/OPENMEETING >>>> > >S/Cluster+Master-Slave+overview >>>> > > >>>> > > Thanks again, >>>> > > Nicklas >>>> > > >>>> > > On Wed, Dec 12, 2012 at 2:04 PM, Dimitri Yioulos >>>> > > <dyiou...@onpointfc.com> wrote: Hi, Nicklas. >>>> > > >>>> > > I can't answer any of your technical questions, but can >>>> > > say that I've installed OM on a VMware virtual machine >>>> > > running CentOS 6.3. It works a treat. Others have >>>> > > installed it on machines running Ubuntu. I guess >>>> > > that's a matter of personal choice depending on, for >>>> > > example, the distro you're most comfortable with, or >>>> > > run in your environment. >>>> > > >>>> > > HTH. >>>> > > >>>> > > Dimitri >>>> > > >>>> > > >>>> > > On Wednesday 12 December 2012 5:55:41 am Nicklas af >>>> > > Ekenstam >>>> > > >>>> > > wrote: >>>> > > > Hello, >>>> > > > >>>> > > > I am in the process of setting up a proof of concept >>>> > > > based on OpenMeetings and would very much appreciate >>>> > > > your input on a few questions before I get started. >>>> > > > The goal of this proof of concept is to evaluate if >>>> > > > OpenMeetings would be a suitable replacement for a >>>> > > > current system based on Adobe Connect. (I sure hope >>>> > > > so.) >>>> > > > >>>> > > > What I would like to do is install a fully working >>>> > > > OpenMeetings environment that we can play around >>>> > > > with. As I would propably have to take this on the >>>> > > > road I'm wondering if a VMware based install would >>>> > > > work? I see that there are some VMware images >>>> > > > available for download but I think I would prefer to >>>> > > > do the install from scratch myself in order to assess >>>> > > > the installation process as well. >>>> > > > >>>> > > > I'm thinking of doing the install in one of our >>>> > > > Vsphere clusters and, if I need to take it on the >>>> > > > road with me, export it to VMware Workstation images >>>> > > > and run locally on one (or more) laptops with my own >>>> > > > networking equipment. >>>> > > > >>>> > > > These are my questions: >>>> > > > What is a solid choice for the OS/distro? I'm >>>> > > > guessing, based on reading the Wiki, that CentOS is a >>>> > > > good choice; but what version? Or should I look into >>>> > > > one of the other fine distros out there? >>>> > > > >>>> > > > I'm looking to try the clustering features as well on >>>> > > > this project so, based on that, how many servers - >>>> > > > performing what tasks - do you propose I setup? I >>>> > > > would like to use PostgreSQL for the DB, but MySQL >>>> > > > would also work. Two servers running OpenMeetings and >>>> > > > one server running the database? >>>> > > > >>>> > > > I would also like to explore SIP connectivity so >>>> > > > perhaps one server running Asterisk (or similiar)? >>>> > > > >>>> > > > Do I need any more servers for something that would, >>>> > > > pretty much, mimic a real live situation? >>>> > > > >>>> > > > And while I'm asking questions: >>>> > > > Is there a way to extend OpenMeetings so that video >>>> > > > broadcasts could use upstream relaying servers >>>> > > > somehow? We have schools in different locations and >>>> > > > it would be nice if people in these schools could >>>> > > > connect to a locally installed relay server for the >>>> > > > video feed instead of each of them having to go the >>>> > > > main OpenMeetings server gobbling up unnecessary >>>> > > > bandwidth in the process. >>>> > > > >>>> > > > Thanks in advance, >>>> > > > Nicklas >>>> > > >>>> > > -- >>>> > > This message has been scanned for viruses and >>>> > > dangerous content by MailScanner, and is >>>> > > believed to be clean. >>>> >>>> >>>> >>>> -- >>>> This message has been scanned for viruses and >>>> dangerous content by MailScanner, and is >>>> believed to be clean. >>>> >>>> >>> >> >> >> -- >> WBR >> Maxim aka solomax >> > > -- WBR Maxim aka solomax
