More of a server problem than bukkit problem but maybe you could help?

Discussion in 'Bukkit Help' started by tremor, Oct 21, 2011.

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  1. Offline

    tremor

    I just purchased a Centos based Dedicated server (an upgrade from my Centos VPS) so that I could host a better, faster, more stable minecraft server for my players... the expense of this new server is still something I'm trying to get over and not have heart failure. Thus so, you could deduce that I have not opted for all the extras like high-end support, VNC, etc.. so basically what I have is a SSH access. I'm "fair" in regards to administering a linux box, I know enough to be dangerous. I thought everything was find and dandy, I've had my server up, people connecting.. i've even setup a couple of domain names and web directories, all seemed to be going swimmingly.. but now, for the 2nd day in a row i've encountered this problem.

    Code:
     Failed to verify username! [internal error java.net.UnknownHostException: session.minecraft.net]
    07:34:00 [SEVERE] java.net.UnknownHostException: session.minecraft.net
    07:34:00 [SEVERE]       at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:158)
    07:34:00 [SEVERE]       at java.net.Socket.connect(Socket.java:546)
    07:34:00 [SEVERE]       at java.net.Socket.connect(Socket.java:495)
    07:34:00 [SEVERE]       at sun.net.NetworkClient.doConnect(NetworkClient.java:174)
    07:34:00 [SEVERE]       at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
    07:34:00 [SEVERE]       at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
    07:34:00 [SEVERE]       at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
    07:34:00 [SEVERE]       at sun.net.www.http.HttpClient.New(HttpClient.java:321)
    07:34:00 [SEVERE]       at sun.net.www.http.HttpClient.New(HttpClient.java:338)
    07:34:00 [SEVERE]       at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
    07:34:00 [SEVERE]       at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
    07:34:00 [SEVERE]       at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
    07:34:00 [SEVERE]       at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
    07:34:00 [SEVERE]       at java.net.URL.openStream(URL.java:1029)
    07:34:00 [SEVERE]       at net.minecraft.server.ThreadLoginVerifier.run(ThreadLoginVerifier.java:34)
    
    Yesterday I fiddled with some of my network settings, to no avail, and then suddenly out of the blue the problem went away... then I check back in today, and the problem has returned. No one can connect, this error comes up when they attempt to connect. My research tells me that this error is saying that JAVA could not resolve the IP ADDRESS of the host. But which host? Session.minecraft.net? or my server? I can successfully ping Session.minecraft.net from my server. I can also successfully ping my server from another source.

    People are unable to login when they are getting this error. I've taken all the steps of removing my plugins, even running vanilla Minecraft... and all the same. I also run a game server of a different game type on this box, which.. is having no issues. So i'm assuming that somehow, somewhere there is a configuration problem or network issue between my new dedicated server and the minecraft session server which is not allowing them to communicate properly. Please advise, thank you!!!! Much karma to whomever can help me solve this.
     
  2. Offline

    nickrak

    that looks like an issue with DNS resolution, you should try switching to a more reliable DNS, 8.8.4.4 or 8.8.8.8 (Google).

    If you only have SSH access to the CentOS machine, the DNS settings are located in /etc/resolv.conf
     
  3. Offline

    ledhead900

    http://forums.bukkit.org/threads/cl...n-own-server-for-other-players-as-well.42475/
    and
    http://forums.bukkit.org/threads/threadloginverifier.42472/

    Appears another Notch server issue.

    Make it a habbit to check the server in both Online and Offline mode :) Just remember to switch back to online mode before resuming normal operation.
     
  4. Offline

    nickrak

    The authentication servers have been down, but the DNS has been fine. If the DNS was fine but the server was down he wouldn't get an UnknownHostException, he'd get a SocketException.
     
  5. Offline

    tremor

    My other server on a different host (vps) never has any problem like this... i'm so far testing this on the new ded server in hopes of fully moving but it no look so good.. problem wont go away
     
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