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Re: [lvs-users] The Weirdest Thing You've Ever Seen with ldirectord

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] The Weirdest Thing You've Ever Seen with ldirectord
From: "Robinson, Eric" <eric.robinson@xxxxxxxxx>
Date: Fri, 14 Nov 2008 18:36:26 -0800
Furthermore, the following tcpdump from the load balancer shows
ldirectord's healthceck of the RS on port 5060 and the RS answering, yet
ipvsadm still shows the RS with weight 0. Meanwhile, ipvsadm shows a
bogus RS at port 5061 with weight 1, even though no packets are ever
sent to that port!

18:31:26.511709 IP lb2-inside.mycharts.md.47285 > 192.168.10.200.5060: S
2859466238:2859466238(0) win 5840 <mss 1460,sackOK,timestamp 2064340618
0,nop,wscale 6>
18:31:26.511854 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: S
2367511769:2367511769(0) ack 2859466239 win 5792 <mss
1460,sackOK,timestamp 1578913689 2064340618,nop,wscale 2>
18:31:26.511896 IP lb2-inside.mycharts.md.47285 > 192.168.10.200.5060: .
ack 1 win 92 <nop,nop,timestamp 2064340618 1578913689>
18:31:26.512725 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: P
1:66(65) ack 1 win 1448 <nop,nop,timestamp 1578913690 2064340618>
18:31:26.512758 IP lb2-inside.mycharts.md.47285 > 192.168.10.200.5060: .
ack 66 win 92 <nop,nop,timestamp 2064340618 1578913690>
18:31:26.513130 IP lb2-inside.mycharts.md.47285 > 192.168.10.200.5060: P
1:255(254) ack 66 win 92 <nop,nop,timestamp 2064340619 1578913690>
18:31:26.513348 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: .
ack 255 win 1716 <nop,nop,timestamp 1578913691 2064340619>
18:31:26.513371 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: P
66:86(20) ack 255 win 1716 <nop,nop,timestamp 1578913691 2064340619>
18:31:26.513379 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: F
86:86(0) ack 255 win 1716 <nop,nop,timestamp 1578913691 2064340619>
18:31:26.513385 IP 192.168.10.200.5060 > lb2-inside.mycharts.md.47285: R
87:87(0) ack 255 win 1716 <nop,nop,timestamp 1578913691 2064340619>


--
Eric Robinson



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