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Hi all,
I still have the same problem.
Meantime, to be sure what is going on, I reinstalled my server. So I
have ubuntu 8.04, installed from scratch and updated (apt-get
upgrade). I installed only ipvsadm (apt-get install ipvsadm). This is
my sample config file:
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
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
It is not working still.
Any ideas ? TIA
On Fri, Feb 6, 2009 at 12:38 PM, Dusan Djordjevic
<dusan.djordjevic@xxxxxxxxx> wrote:
> 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
>
--
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
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