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What happens if you remove the ipvsadm rules on the host which does not
have the VIP active on eth0 on it?
Sounds like both systems are running the packet through LVS and routing
it back and forth. I guess you could implement it with FWM and have it
not match packets coming from the MAC of the other director.
When I've done a two-node environment with director and real on the same
box, I've always ran a private interconnect between them and routed
traffic over that.
On 10/23/11 4:37 PM, Tomasz Chmielewski wrote:
> I'm trying to set up both director and realserver on one machine, and run 2
> such servers.
>
> Unfortunately, it results in terrible packet storm/looping (200k "repeated"
> packets/s) when:
>
> - I start ipvsadm rules on *both* servers,
> - LVS connects the client to the other server.
>
>
> Is it expected? Is there a workaround or something I didn't set?
>
>
>
> Settings - server 1:
>
> server1:/# ipvsadm -Ln
> IP Virtual Server version 1.2.1 (size=4096)
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP 209.15.13.253:80 lc
> -> 209.15.13.228:80 Local 20 0 0
> -> 209.15.13.229:80 Route 20 0 0
>
>
> eth0 Link encap:Ethernet HWaddr 78:2b:cb:49:75:a7
> inet addr:209.15.13.228 Bcast:209.15.13.255 Mask:255.255.255.224
> inet6 addr: fe80::7a2b:cbff:fe49:75a7/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:565546 errors:0 dropped:0 overruns:0 frame:0
> TX packets:565232 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:44152913 (44.1 MB) TX bytes:44132615 (44.1 MB)
> Interrupt:36 Memory:da000000-da012800
>
> lo:253 Link encap:Local Loopback
> inet addr:209.15.13.253 Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
>
>
> Settings - server 2:
>
> server2:/# ipvsadm -Ln
> IP Virtual Server version 1.2.1 (size=4096)
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP 209.15.13.253:80 lc
> -> 209.15.13.228:80 Route 20 0 0
> -> 209.15.13.229:80 Local 20 0 0
>
>
> eth0 Link encap:Ethernet HWaddr 78:2b:cb:4a:d7:1d
> inet addr:209.15.13.229 Bcast:209.15.13.255 Mask:255.255.255.224
> inet6 addr: fe80::7a2b:cbff:fe4a:d71d/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:1379119 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1378568 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:107695951 (107.6 MB) TX bytes:108057297 (108.0 MB)
> Interrupt:36 Memory:da000000-da012800
>
> eth0:u253 Link encap:Ethernet HWaddr 78:2b:cb:4a:d7:1d
> inet addr:209.15.13.253 Bcast:209.15.13.253 Mask:255.255.255.255
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> Interrupt:36 Memory:da000000-da012800
>
> lo:253 Link encap:Local Loopback
> inet addr:209.15.13.253 Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
>
>
>
> 85.183.95.92 is client IP. It just sends a few packets, which results in
> massive amounts of repeated packets (200 kp/s).
>
>
> 21:07:34.048984 IP (tos 0x0, ttl 56, id 58921, offset 0, flags [DF], proto
> TCP (6), length 60)
> 85.183.95.92.37297> 209.15.13.253.80: Flags [S], cksum 0x5fb3
> (correct), seq 3532512711, win 14520, options [mss 1452,sackOK,TS val 8338414
> ecr 0,nop,wscale 7], length 0
> 21:07:34.048987 IP (tos 0x0, ttl 56, id 58921, offset 0, flags [DF], proto
> TCP (6), length 60)
> 85.183.95.92.37297> 209.15.13.253.80: Flags [S], cksum 0x5fb3
> (correct), seq 3532512711, win 14520, options [mss 1452,sackOK,TS val 8338414
> ecr 0,nop,wscale 7], length 0
> 21:07:34.049029 IP (tos 0x0, ttl 56, id 58921, offset 0, flags [DF], proto
> TCP (6), length 60)
> 85.183.95.92.37297> 209.15.13.253.80: Flags [S], cksum 0x5fb3
> (correct), seq 3532512711, win 14520, options [mss 1452,sackOK,TS val 8338414
> ecr 0,nop,wscale 7], length 0
> 21:07:34.049031 IP (tos 0x0, ttl 56, id 58921, offset 0, flags [DF], proto
> TCP (6), length 60)
> 85.183.95.92.37297> 209.15.13.253.80: Flags [S], cksum 0x5fb3
> (correct), seq 3532512711, win 14520, options [mss 1452,sackOK,TS val 8338414
> ecr 0,nop,wscale 7], length 0
> 21:07:34.049073 IP (tos 0x0, ttl 56, id 58921, offset 0, flags [DF], proto
> TCP (6), length 60)
>
>
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