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 <[email protected]> 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 <[email protected]> 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 <[email protected]>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 >>> > > <[email protected]> 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 >
