[lvs-users] Real Servers receive nothing
Hello, I am trying to configure LVS on CentOS 5.3. I have followed the tuturial LVS-NAT on http://www.ultramonkey.org/papers/lvs_tutorial/html/ I have typed on the load balancer : ifconfig eth0:0 10.8.8.85 netmask 255.255.255.0 ipvsadm -A -t 10.8.8.85:80 ipvsadm -a -t 10.8.8.85:80 -r 10.8.10.2:80 -m ipvsadm -a -t 10.8.8.85:80 -r 10.8.10.3:80 -m the ip forwarding is correctlt activated. The network mask for every ip is 255.255.255.0. Virtual IP = 10.8.8.85 |---|- |eth0=10.8.9.1 | --|-- | loadbalancer | | router| || --|-- |eth1=10.8.10.1 | |---|-|--|--- |eth0=10.8.10.2|eth0=10.8.10.3 |gateway=10.8.8.85 |gateway=10.8.8.85 |-||-| | rs1 || rs2 | |_||_| It does not work and I don't have any ideas how to debug that. Thank you very much for your help. ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] Real Servers receive nothing
On Tue, 2009-05-26 at 14:04 +0800, Guillaume Charhon wrote: It does not work and I don't have any ideas how to debug that. The default gateway for the realservers should be 10.8.10.1. If the netmask for everything is 255.255.255.0 (/24) then they'll have no idea how to route back to 10.8.8.85. Graeme ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] Real Servers receive nothing
poiuytrez wrote: Hello, Ok, but the packets does not seems to go to the realservers. There is no log entry in apache. So the gateway is not the main problem. IP 101 is your friend. I mean, SYN packets probably reach the RS, but because the ACK arrive out of context on the client, the TCP connection is never fully established, even less the HTTP connection, hence no entries in your apache logs. You can probably confirm my theory in running tcpdump on the RS, and you'll see the SYN packets arriving. -- Thomas ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] cluster setup
On Mon, May 25, 2009 at 10:38 PM, Graeme Fowler gra...@graemef.net wrote: On Mon, 2009-05-25 at 20:49 +0530, Kaushal Shriyan wrote: I have heartbeat 2.99 and ldirectord running on mthost04 and mthost03. when i stop apache on either of mthost05/02 it works as expected. when i stop primary node (mthost04) the failover does not happen. means to say that mthost03 does not take over. I am using /var/lib/heartbeat/crm/cib.xml file for resources You need to ask this over on the Linux-HA lists - that's where support for Heartbeat lives. Graeme ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users Hi Graeme Thanks for the quick reply. is my setup correct ? or am i missing something ?. Thanks and Regards Kaushal ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] ldirectord: same port number used with NAT and Direct Routing + monitoring = problem
Hi Simon, apt-get install ldirectord ii ldirectord 1.2.5-3 Monitors virtual services provided by LVS Simon Horman wrote: Hi Daniel, This looks like a bug in ldirectord whereby it thinks 192.168.58.56:/Route and 192.168.58.55:/Masq are the same thing and is using the same data structure to handle them internally. I'll look into this. Could you let me know how you installed ldirectord. Was it using the Debian ldirectord package for etch, if so, which version? ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] cluster setup
On Tue, 2009-05-26 at 20:11 +0530, Kaushal Shriyan wrote: Thanks for the quick reply. is my setup correct ? or am i missing something ?. I don't know; your question is not related to LVS itself but to Heartbeat, which has its own support mailing list. You'll find it here: http://lists.linux-ha.org/mailman/listinfo/linux-ha Graeme ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] ldirectord: failed check doesn't remove a machine from the pool
Hi Graeme, I found that it was not because OK is an HTTP keyword that the check was not working, but because OK is a substring of BR*OK*EN. Daniel Daniel Lemay wrote: Hi Graeme, You were correct. It is now working. Thank you Daniel Graeme Fowler wrote: On Mon, 2009-05-25 at 16:19 +, Daniel Lemay wrote: T 192.168.58.56:7778 - 192.168.58.2:60760 [AP] HTTP/1.1 200 OK..Date: Mon, 25 May 2009 16:06:14 GMT..Server: Spot the OK above? ldirectord is matching on that. If you make your string something which isn't defined as a response code in the HTTP protocol, you'll probably make it work :) Try: SERVER_OK_RIGHT_NOW for OK SERVER_BUSTED for BROKEN Graeme ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
[lvs-users] List connections on server backup
Hello, We having a problem where we use two servers as balancers LVS, one master and other backup. However, my backup LVS server yet received connections list. In the doc i saw a question about this and the answer was that he could not list these connections. (http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.server_state_sync_demon.html) 1) Should the backup server list connections its received? Horms No I did something wrong? Note: This only occurs using TCP. Using realservers udp protocol with this problem does not occur. Leandro Ferreira ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] Real Servers receive nothing
I have inverstigated deeper with filtering only the port 80. Packets now go to The request is going to the real server, then go back to the load balancer but never go back to the workstation. No output on eth0 to go out... (only 10.8.8.111 10.8.8.85) Do I have to add a route or something like that ? Thank you. poiuytrez wrote: I have tried the tcp dump but it gives to much info, I don't really understand it, but it does not seems to have any http request. Here is a screen shoot at time of the request. The workstation that tries to retrive the page is 10.8.8.111. http://www.nabble.com/file/p23734830/screen.jpg Thank you. Thomas Pedoussaut-2 wrote: poiuytrez wrote: Hello, Ok, but the packets does not seems to go to the realservers. There is no log entry in apache. So the gateway is not the main problem. IP 101 is your friend. I mean, SYN packets probably reach the RS, but because the ACK arrive out of context on the client, the TCP connection is never fully established, even less the HTTP connection, hence no entries in your apache logs. You can probably confirm my theory in running tcpdump on the RS, and you'll see the SYN packets arriving. -- Thomas ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users -- View this message in context: http://www.nabble.com/-lvs-users--Real-Servers-receive-nothing-tp23717632p23735056.html Sent from the LVS mailing list archive at Nabble.com. ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
Re: [lvs-users] ldirectord feature patch - add abilility to signal system maintenance
Hello Simon, On Tue, 26 May 2009 16:27:45 +1000 Simon Horman wrote: On Fri, May 22, 2009 at 06:08:18PM +0900, Christian Balzer wrote: Hello, One more thing I just noticed (must be part of the newer kernel since I never saw it before is that it states this in the kernel log when trying to (falsely) route packets to the dead RS: --- May 22 18:04:45 engtest02 kernel: [282126.815844] IPVS: SH: no destination available Is this causing trouble? Err, come again? It is the first time that I see the scheduler actually logging that it is falling flat on it's face despite the fact that it very much has a working realserver and thus a destination available. It is indication/acknowledgment of the problems with SH and quiescent=yes I pointed out earlier in this thread. Regards, Christian -- Christian BalzerNetwork/Systems EngineerNOC ch...@gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/ https://secure3.gol.com/mod-pl/ols/index.cgi/?intr_id=F-2ECXvzcr6656 ___ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
