|
I just want to add few things (if they matter):
-I am running both servers on VMWare ESX
-nothing else is running on servers (even heartbeat is down)
-network connectivity works fine, I can connect to ssh of problematic server
On Fri, Feb 6, 2009 at 12:16 PM, Dusan Djordjevic
<dusan.djordjevic@xxxxxxxxx> wrote:
> Hi all,
>
> I am trying to install two LVS servers connected with Heartbeat. As
> first step i installed just two servers and tested if pure LVS is
> working. Strange, with identical setup, it works on one server, not on
> another.
>
> Here is setup:
>
> both nodes are ubuntu 8.04
> ipvsadm is installed from standard ubuntu repo (apt-get install ipvsadm)
>
> I added following setup to /etc/rc.local
>
> echo 1 > /proc/sys/net/ipv4/ip_forward
> echo 0 > /proc/sys/net/ipv4/conf/all/send_redirects
> echo 0 > /proc/sys/net/ipv4/conf/eth0/send_redirects
>
> From both LVS, I can reach real servers.
>
> Here is LVS setup I am testing:
>
> ipvsadm -C
> ipvsadm -A -t 192.168.21.100:80 -s rr -p 900
> ipvsadm -a -t 192.168.21.100:80 -r 192.168.20.1 -m -w 100
> ipvsadm -a -t 192.168.21.100:80 -r 192.168.20.2 -m -w 100
> ipvsadm -a -t 192.168.21.100:80 -r 192.168.20.3 -m -w 100
>
> On one of nodes, it works withou any problem. On other one, it is not
> working. Here is output from tcpdump (I am trying to connect to lvs on
> address 192.168.21.100 from server 192.168.21.10).
>
> root@ucplb-second-node:~# tcpdump -ln host 192.168.21.10
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
> 06:13:54.197763 arp who-has 192.168.21.100 tell 192.168.21.10
> 06:13:54.198226 arp reply 192.168.21.100 is-at 00:50:56:92:4d:a2
> 06:13:54.197809 IP 192.168.21.10.46204 > 192.168.21.100.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1070655
> 0,nop,wscale 5>
> 06:13:54.197867 IP 192.168.21.10.46204 > 192.168.20.3.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1070655
> 0,nop,wscale 5>
> 06:13:57.186597 IP 192.168.21.10.46204 > 192.168.21.100.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1070955
> 0,nop,wscale 5>
> 06:13:57.186645 IP 192.168.21.10.46204 > 192.168.20.3.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1070955
> 0,nop,wscale 5>
> 06:14:03.186451 IP 192.168.21.10.46204 > 192.168.21.100.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1071555
> 0,nop,wscale 5>
> 06:14:03.186489 IP 192.168.21.10.46204 > 192.168.20.3.80: S
> 3085705580:3085705580(0) win 5840 <mss 1460,sackOK,timestamp 1071555
> 0,nop,wscale 5>
>
> Any idea what might cause the problem. I am very confused since I
> literally copied configuration from another node where it works. Any
> idea how to troubleshoot this ?
>
> Thank you in advance.
>
> Dusan
>
--
Dusan Djordjevic, CMO | Troxo doo | http://www.troxo.com
tel +381 18 29 29 40 | fax +381 18 526 917 | mob +381 69 22 44 617
_______________________________________________
Please read the documentation before posting - it's available at:
http://www.linuxvirtualserver.org/
LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://lists.graemef.net/mailman/listinfo/lvs-users
|
