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You can cancel this post. I wasn't sending traffic over 127.0.0.1 like i
thought
On Mon, Jul 2, 2018 at 4:02 PM, Steve Stonebraker <
steve.stonebraker@xxxxxxxxx> wrote:
> I am unable to capture lvsadm traffic on the loopback interface.
>
> I am sucessfully sending traffic to my SIEM via ipvsadm.
>
> I was able to do this on both interfaces; ens192 and interface lo.
>
> I had no issues using tcpdump to view traffic being sent via ipvsadm on
> interface ens192.
>
> My problem is that when i use tcpdump on interface lo I do not see any
> ipvsadm traffic.
>
>
> ** When I run tcpdump I don't see any udp traffic
> # tcpdump -i lo -n udp port 51444 -vv
> tcpdump: listening on lo, link-type EN10MB (Ethernet), capture size 262144
> bytes
>
> # ifconfig
> ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 10.0.10.136 netmask 255.255.255.0 broadcast 10.0.10.255
>
> ether 00:50:56:ce:e3:dc txqueuelen 1000 (Ethernet)
> RX packets 63480807660 bytes 12508576879467 (11.3 TiB)
> RX errors 0 dropped 2 overruns 0 frame 0
> TX packets 19861938950 bytes 5978856268385 (5.4 TiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
> inet 127.0.0.1 netmask 255.0.0.0
> inet6 ::1 prefixlen 128 scopeid 0x10<host>
> loop txqueuelen 1 (Local Loopback)
> RX packets 351855 bytes 1689650676 (1.5 GiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 351855 bytes 1689650676 (1.5 GiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
>
> ** ipvsadm commands to set up round robin load balancing to three SIEM
> nodes **
>
> # ipvsadm -A -u 127.0.0.1:51444 -s rr -o
> # ipvsadm -a -u 127.0.0.1:51444 -r 10.10.10.77:514 -m -w 1
> # ipvsadm -a -u 127.0.0.1:51444 -r 10.10.10.78:514 -m -w 1
> # ipvsadm -a -u 127.0.0.1:51444 -r 10.10.10.79:514 -m -w 1
>
> # ipvsadm
> IP Virtual Server version 1.2.1 (size=4096)
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> UDP localhost:51444 rr ops
> -> 10.10.10.77:syslog Masq 1 0 1
> -> 10.10.10.78:syslog Masq 1 0 2
> -> 10.10.10.79:syslog Masq 1 0 2
>
>
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