tomcat7 cluster not communicating
So, I have a tomcat7 cluster on AWS with a cluster configuration that works on my local VirtualBox cluster. Specs: - Same config. - Firewall turned off on all hosts. - unicast instead of multicast the following commands time out: nc -zv member1 8080 nc -zv member1 4110 They are listening however: tcp0 0 0.0.0.0:41100.0.0.0:* LISTEN tcp0 0 0.0.0.0:80800.0.0.0:* LISTEN tcpdump shows over and over SYN's but no replies on all members: 18:57:23.762712 IP member1: 52548 192.168.10.10.g2tag: Flags [S], seq 215397535, win 14600, options [mss 1460,sackOK,TS val 159216257 ecr 0,nop,wscale 7], length 0 Connecting to any other port from one member to another works fine, for example ssh. So I can't figure out why network communication works between all hosts, tomcat is listening, but trying to connect to the listening port fails. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat7 cluster not communicating
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Frank, On 3/8/13 2:42 PM, Zippy Zeppoli wrote: So, I have a tomcat7 cluster on AWS with a cluster configuration that works on my local VirtualBox cluster. Specs: - Same config. - Firewall turned off on all hosts. - unicast instead of multicast the following commands time out: nc -zv member1 8080 nc -zv member1 4110 They are listening however: tcp0 0 0.0.0.0:4110 0.0.0.0:* LISTEN tcp0 0 0.0.0.0:8080 0.0.0.0:* LISTEN tcpdump shows over and over SYN's but no replies on all members: 18:57:23.762712 IP member1: 52548 192.168.10.10.g2tag: Flags [S], seq 215397535, win 14600, options [mss 1460,sackOK,TS val 159216257 ecr 0,nop,wscale 7], length 0 Connecting to any other port from one member to another works fine, for example ssh. So I can't figure out why network communication works between all hosts, tomcat is listening, but trying to connect to the listening port fails. Are you using your EC2 internal IP addresses or external PI addresses? When you say you have the same config, I presume that you have different IP addresses configured, yes? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEAREIAAYFAlE6VqAACgkQ9CaO5/Lv0PC7zQCffK+OuT2bKd87ziLS3+ICL8II GjUAoICdZSixj/MTozTEtrlpjJa8W9iw =xEcb -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat7 cluster not communicating
I don't think it has anything to do with EC2, but I could be wrong. Like I said before other ports connect fine, and everything is in the same subnet. There's no way for a firewall to interfere as iptables is disabled. It's a VPC with private (different IPs, you can't have duplicate IP's in EC2). On Fri, Mar 8, 2013 at 1:22 PM, Christopher Schultz ch...@christopherschultz.net wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Frank, On 3/8/13 2:42 PM, Zippy Zeppoli wrote: So, I have a tomcat7 cluster on AWS with a cluster configuration that works on my local VirtualBox cluster. Specs: - Same config. - Firewall turned off on all hosts. - unicast instead of multicast the following commands time out: nc -zv member1 8080 nc -zv member1 4110 They are listening however: tcp0 0 0.0.0.0:4110 0.0.0.0:* LISTEN tcp0 0 0.0.0.0:8080 0.0.0.0:* LISTEN tcpdump shows over and over SYN's but no replies on all members: 18:57:23.762712 IP member1: 52548 192.168.10.10.g2tag: Flags [S], seq 215397535, win 14600, options [mss 1460,sackOK,TS val 159216257 ecr 0,nop,wscale 7], length 0 Connecting to any other port from one member to another works fine, for example ssh. So I can't figure out why network communication works between all hosts, tomcat is listening, but trying to connect to the listening port fails. Are you using your EC2 internal IP addresses or external PI addresses? When you say you have the same config, I presume that you have different IP addresses configured, yes? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEAREIAAYFAlE6VqAACgkQ9CaO5/Lv0PC7zQCffK+OuT2bKd87ziLS3+ICL8II GjUAoICdZSixj/MTozTEtrlpjJa8W9iw =xEcb -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: tomcat7 cluster not communicating
if this is a newly installed system with linux in each virtual machine, make sure you have registered the IP address (192.168.x.x) in \etc\hosts files. On Sat, Mar 9, 2013 at 8:42 AM, Zippy Zeppoli zippyzepp...@gmail.comwrote: So, I have a tomcat7 cluster on AWS with a cluster configuration that works on my local VirtualBox cluster. Specs: - Same config. - Firewall turned off on all hosts. - unicast instead of multicast the following commands time out: nc -zv member1 8080 nc -zv member1 4110 They are listening however: tcp0 0 0.0.0.0:41100.0.0.0:* LISTEN tcp0 0 0.0.0.0:80800.0.0.0:* LISTEN tcpdump shows over and over SYN's but no replies on all members: 18:57:23.762712 IP member1: 52548 192.168.10.10.g2tag: Flags [S], seq 215397535, win 14600, options [mss 1460,sackOK,TS val 159216257 ecr 0,nop,wscale 7], length 0 Connecting to any other port from one member to another works fine, for example ssh. So I can't figure out why network communication works between all hosts, tomcat is listening, but trying to connect to the listening port fails. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Vince Stewart
Re: tomcat7 cluster not communicating [SOLVED]
It was AWS security groups. Bit me. AWS VLAN != Regular VLAN On Fri, Mar 8, 2013 at 2:12 PM, Vince Stewart stewart.vi...@gmail.com wrote: if this is a newly installed system with linux in each virtual machine, make sure you have registered the IP address (192.168.x.x) in \etc\hosts files. On Sat, Mar 9, 2013 at 8:42 AM, Zippy Zeppoli zippyzepp...@gmail.comwrote: So, I have a tomcat7 cluster on AWS with a cluster configuration that works on my local VirtualBox cluster. Specs: - Same config. - Firewall turned off on all hosts. - unicast instead of multicast the following commands time out: nc -zv member1 8080 nc -zv member1 4110 They are listening however: tcp0 0 0.0.0.0:41100.0.0.0:* LISTEN tcp0 0 0.0.0.0:80800.0.0.0:* LISTEN tcpdump shows over and over SYN's but no replies on all members: 18:57:23.762712 IP member1: 52548 192.168.10.10.g2tag: Flags [S], seq 215397535, win 14600, options [mss 1460,sackOK,TS val 159216257 ecr 0,nop,wscale 7], length 0 Connecting to any other port from one member to another works fine, for example ssh. So I can't figure out why network communication works between all hosts, tomcat is listening, but trying to connect to the listening port fails. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Vince Stewart - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
