make hsflowd to listen to multiple interfaces

[Johan De Graeve]

Hi everybody,

How do you enable hsflowd on linux to listen to multiple interfaces. 

I found in the documentation at https://github.com/sflow/host-sflow/blob/master/src/Linux/scripts/hsflowd.conf

that you can use 

pcap { speed=1G-1T }

but when I start hsflowd I get

[root@saturnus1 ~]# cat /etc/hsflowd.conf 

sflow {

  sampling = 500

  collector { ip = 10.110.3.160 udpport=6343 }

  pcap { speed=1G-1T }

  kvm {}

}

[root@saturnus1 ~]# /sbin/hsflowd -ddd

started

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(64)

dbg1: my_os_calloc(32)

dbg1: my_os_calloc(128)

dbg1: my_os_calloc(64)

parse error at <speed><1G-1T> on line 4 of /etc/hsflowd.conf : unexpected pcap setting

failed to read config file

I'm using the following version of hsflowd

[root@saturnus1 ~]# yum info hsflowd

Loaded plugins: fastestmirror

Loading mirror speeds from cached hostfile

Installed Packages

Name        : hsflowd

Arch        : x86_64

Version     : 2.0.4

Release     : 6

Size        : 674 k

Repo        : installed

From repo   : hsflow

Summary     : host sFlow daemon

URL         : http://sflow.net

License     : http://sflow.net/license.html

Description : This program implements the host sFlow(R) standard - sending

            : key performance metrics to an sFlow collector to enable

            : highly-scalable monitoring of all critical resources in

            : the network. If Open VSwitch is present, will also control

            : the Open VSwitch sFlow configuration.

Any ideas?

Much appreciated!

Johan De Graeve

[Neil McKee]

That pcap option was added in 2.0.5.  Latest is 2.0.7:

https://github.com/sflow/host-sflow/releases

Provided your kernel is 3.19 or newer this will be done efficiently (with BPF sampling in kernel).  Otherwise you will see hsflowd use more CPU.   If hsflowd uses too much CPU then you can either switch to using nflog { } instead,  or upgrade the kernel (e.g. using "elrepo").

------
Neil McKee
InMon Corp.
http://www.inmon.com

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[Johan De Graeve]

Hi Neil,

Thank you for your help.

We are using centos and apparently we can't yet upgrade to 3.19. Centos runs a bit behind

I'll try to upgrade to 2.0.7

Thx a lot.

Grtz,

Johan

[Johan De Graeve]

Upgraded all our centos 7 ovirt hypervisors to hsflowd 2.07 and problem is solved

Thx

Johan