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Re: [lvs-users] LVS configuration using pirahna

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] LVS configuration using pirahna
From: Reet Vyas <reet.vyas28@xxxxxxxxx>
Date: Thu, 22 Mar 2012 13:54:54 +0530
Hi
this is my routing tables

192.168.3.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
122.166.233.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0
virbr0
169.254.0.0     0.0.0.0         255.255.0.0     U     1003   0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1004   0        0 eth1
0.0.0.0         122.166.233.1   0.0.0.0         UG    0      0        0 eth0


On Wed, Mar 21, 2012 at 7:46 PM, David Coulson <david@xxxxxxxxxxxxxxxx>wrote:

> Yes, that won't work - If squid is running on lvs router, and pointed at
> vip, it's not going to route via lvs. You can't run a lvs client on the lvs
> router, and in this case squid is the lvs client as it is proxying.
>
> Not really sure i understand your need to use squid. lvs should still work
> even if they are 'different networks' as long as your routing is setup
> properly.
>
>
> On 3/21/12 10:06 AM, Reet Vyas wrote:
>
>> I have squid on lvs router cause my real servers on diif n/w so add squid
>> proxy on lvs and gave real server ip address of my lvs router may be this
>> can be reason i cant access my application using VIP..please suggest
>>
>> On Wed, Mar 21, 2012 at 5:17 PM, David Coulson<david@xxxxxxxxxxxxxxxx**
>> >wrote:
>>
>>  All I see in your tcpdump is ports 22 and 443. Can you only capture the
>>> packets related to the LVS connection? You also need to do the capture on
>>> the real server, since that is probably where the issue is.
>>>
>>>
>>> On 3/21/12 3:51 AM, Reet Vyas wrote:
>>>
>>>  Hi I Have reconfigured everything below are the details
>>>>
>>>> this is my ifconfig
>>>>
>>>> eth0      Link encap:Ethernet  HWaddr 00:00:E8:F6:74:DA
>>>>           inet addr:122.166.233.133  Bcast:122.166.233.255
>>>> Mask:255.255.255.0
>>>>           inet6 addr: fe80::200:e8ff:fef6:74da/64 Scope:Link
>>>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>           RX packets:94433 errors:0 dropped:0 overruns:0 frame:0
>>>>           TX packets:130966 errors:0 dropped:0 overruns:0 carrier:0
>>>>           collisions:0 txqueuelen:1000
>>>>           RX bytes:9469972 (9.0 MiB)  TX bytes:19929308 (19.0 MiB)
>>>>           Interrupt:16 Base address:0x2000
>>>>
>>>> eth0:1    Link encap:Ethernet  HWaddr 00:00:E8:F6:74:DA
>>>>           inet addr:122.166.233.136  Bcast:122.166.233.255
>>>> Mask:255.255.255.0
>>>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>           Interrupt:16 Base address:0x2000
>>>>
>>>> eth1      Link encap:Ethernet  HWaddr 00:E0:20:14:F9:2D
>>>>           inet addr:192.168.3.1  Bcast:192.168.3.255  Mask:255.255.255.0
>>>>           inet6 addr: fe80::2e0:20ff:fe14:f92d/64 Scope:Link
>>>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>           RX packets:123718 errors:0 dropped:0 overruns:0 frame:0
>>>>           TX packets:148856 errors:0 dropped:0 overruns:0 carrier:0
>>>>           collisions:0 txqueuelen:1000
>>>>           RX bytes:18738556 (17.8 MiB)  TX bytes:11697153 (11.1 MiB)
>>>>           Interrupt:17 Memory:60000400-600004ff
>>>>
>>>> eth1:1    Link encap:Ethernet  HWaddr 00:E0:20:14:F9:2D
>>>>           inet addr:192.168.3.10  Bcast:192.168.3.255
>>>>  Mask:255.255.255.0
>>>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>           Interrupt:17 Memory:60000400-600004ff
>>>>
>>>> eth2      Link encap:Ethernet  HWaddr 00:16:76:6E:D1:D2
>>>>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>>>>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>>>>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>>>>           collisions:0 txqueuelen:1000
>>>>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>>>>           Interrupt:21 Base address:0xa500
>>>>
>>>>
>>>>  and ipvsadm -ln command
>>>>
>>>> IP Virtual Server version 1.2.1 (size=4096)
>>>> Prot LocalAddress:Port Scheduler Flags
>>>>   ->   RemoteAddress:Port           Forward Weight ActiveConn InActConn
>>>> TCP  122.166.233.136:5001 rr
>>>> FWM  80 wlc
>>>>   ->   192.168.3.2:80               Masq    1      0          0
>>>>   ->   192.168.3.3:80               Masq    1      0          0
>>>>
>>>>
>>>>
>>>> and tcpdump as u asked for tcpdump -nn
>>>>
>>>> 13:20:51.719651 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 71072, win 1842, options [nop,nop,TS val 5369796 ecr 15415484],
>>>> length 0
>>>> 13:20:51.719666 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 76992:77344, ack 49, win 338, options [nop,nop,TS val 15415577 ecr
>>>> 5369796], length 352
>>>> 13:20:51.723067 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 71424, win 1842, options [nop,nop,TS val 5369799 ecr 15415487],
>>>> length 0
>>>> 13:20:51.723083 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 77344:77696, ack 49, win 338, options [nop,nop,TS val 15415581 ecr
>>>> 5369799], length 352
>>>> 13:20:51.727503 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 71776, win 1842, options [nop,nop,TS val 5369804 ecr 15415488],
>>>> length 0
>>>> 13:20:51.727518 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 77696:78048, ack 49, win 338, options [nop,nop,TS val 15415585 ecr
>>>> 5369804], length 352
>>>> 13:20:51.729719 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 71984, win 1842, options [nop,nop,TS val 5369806 ecr 15415499],
>>>> length 0
>>>> 13:20:51.729734 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 78048:78400, ack 49, win 338, options [nop,nop,TS val 15415587 ecr
>>>> 5369806], length 352
>>>> 13:20:51.730957 IP 180.149.241.196.443>   122.166.233.133.54647: Flags
>>>> [.],
>>>> ack 3204, win 258, options [nop,nop,TS val 8618337 ecr 15415521],
>>>> length 0
>>>> 13:20:51.730985 IP 122.166.233.133.54647>   180.149.241.196.443: Flags
>>>> [P.],
>>>> seq 3204:4628, ack 631, win 1002, options [nop,nop,TS val 15415589 ecr
>>>> 8618337], length 1424
>>>> 13:20:51.734903 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 72336, win 1842, options [nop,nop,TS val 5369811 ecr 15415504],
>>>> length 0
>>>> 13:20:51.734918 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 78400:79120, ack 49, win 338, options [nop,nop,TS val 15415593 ecr
>>>> 5369811], length 720
>>>> 13:20:51.738592 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 72688, win 1842, options [nop,nop,TS val 5369815 ecr 15415517],
>>>> length 0
>>>> 13:20:51.738608 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 79120:79472, ack 49, win 338, options [nop,nop,TS val 15415596 ecr
>>>> 5369815], length 352
>>>> 13:20:51.744741 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [.],
>>>> ack 73200, win 1842, options [nop,nop,TS val 5369821 ecr 15415518],
>>>> length 0
>>>> 13:20:51.744756 IP 122.166.233.133.22>   14.140.226.234.42148: Flags
>>>> [P.],
>>>> seq 79472:79824, ack 49, win 338, options [nop,nop,TS val 15415602 ecr
>>>> 5369821], length 352
>>>> 13:20:51.748002 IP 180.149.241.196.443>   122.166.233.133.54647: Flags
>>>> [P.],
>>>> seq 631:678, ack 3204, win 258, options [nop,nop,TS val 8618339 ecr
>>>> 15415521], length 47
>>>> 13:20:51.748016 IP 122.166.233.133.54647>   180.149.241.196.443: Flags
>>>> [.],
>>>> ack 678, win 1002, options [nop,nop,TS val 15415606 ecr 8618339],
>>>> length 0
>>>> 13:20:51.753389 IP 14.140.226.234.42148>   122.166.233.133.22: Flags
>>>> [P.],
>>>> seq 49:97, ack 73200, win 1842, options [nop,nop,TS val 5369829 ecr
>>>> 15415518], length 48
>>>>
>>>> On Wed, Mar 21, 2012 at 12:43 AM, Enno Gröper<enno+lvs@groeper-**
>>>> berlin.de<enno%2Blvs@groeper-**berlin.de<enno%252Blvs@xxxxxxxxxxxxxxxxx>
>>>> >>wrote:
>>>>
>>>>  Hi,
>>>>
>>>>> Am 20.03.2012 13:15, schrieb Reet Vyas:
>>>>>
>>>>>  I did that but still no luck I just want to know wat i am trying to
>>>>>> configure is correct or not .. Can i access url from VIP as
>>>>>> 192.168.3.10:8080 or not? this is the VIP of my lvs router and it is
>>>>>> working with reasl server 192.168.3.2:8080 ..
>>>>>>
>>>>>>  Without knowledge about the client, we can't tell. In theory yes, it
>>>>> should work (just looking at the lvs configuration).
>>>>> For now I simply ignore your second NIC on the LVS node.
>>>>> I think you have either a 1-NIC, 2 Network LVS-NAT [1] or a One Network
>>>>> LVS-NAT [2]. But only you know that for sure.
>>>>> In both cases the LVS configuration is correct, but you still need
>>>>> tweaks for your network setup.
>>>>> The problem with one-arm LVS nodes is ICMP redirects.
>>>>> What happens, if you ping the client from one of your realservers?
>>>>> Is there a redirect shown? (Don't know what this looks like on Windows.
>>>>> But I assume, Windows ping shows such things, too)
>>>>>
>>>>> If I'm wrong with my assumption:
>>>>> What is your exact setup?
>>>>> * IP of client
>>>>> * routing table of LVS node
>>>>>
>>>>> HTH,
>>>>> Enno
>>>>>
>>>>> [1]
>>>>>
>>>>> http://www.austintek.com/LVS/****LVS-HOWTO/HOWTO/LVS-HOWTO.**LVS-**<http://www.austintek.com/LVS/**LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-**>
>>>>> NAT.html#lvs_nat_one_network_****two_nic<http://www.austintek.**
>>>>> com/LVS/LVS-HOWTO/HOWTO/LVS-**HOWTO.LVS-NAT.html#lvs_nat_**
>>>>> one_network_two_nic<http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.html#lvs_nat_one_network_two_nic>
>>>>> >
>>>>> [2]
>>>>>
>>>>> http://www.austintek.com/LVS/****LVS-HOWTO/HOWTO/LVS-HOWTO.**LVS-**<http://www.austintek.com/LVS/**LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-**>
>>>>> NAT.html#one_network<http://**www.austintek.com/LVS/LVS-**
>>>>> HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.**html#one_network<http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.html#one_network>
>>>>> >
>>>>>
>>>>>
>>>>> ______________________________****_________________
>>>>>
>>>>> Please read the documentation before posting - it's available at:
>>>>> http://www.linuxvirtualserver.****org/<http://www.**
>>>>> linuxvirtualserver.org/ <http://www.linuxvirtualserver.org/>>
>>>>>
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>>>>> *org
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>>>>> <htt**p://lists.graemef.net/mailman/**listinfo/lvs-users<http://lists.graemef.net/mailman/listinfo/lvs-users>
>>>>> >
>>>>>
>>>>>  ______________________________****_________________
>>>>>
>>>> Please read the documentation before posting - it's available at:
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>>>> linuxvirtualserver.org/ <http://www.linuxvirtualserver.org/>>
>>>>
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>>>> >
>>>>
>>>>  ______________________________**_________________
>> Please read the documentation before posting - it's available at:
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>>
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>>
>
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