[ixpmanager] peer-to-peer statistics | sFlow

[Nick Hilliard]

Hi Vladislav,

Vladislav Leontjev wrote on 20/03/2019 14:29:
> ----------------------------------------------------------------------------
>   /srv/ixpmanager/config/grapher.php
> -----------------------------------------------------------------------------
> 
>          'sflow' => [
>              // show sflow / p2p links on the frontend
>              'enabled' => env( 'GRAPHER_BACKEND_SFLOW_ENABLED', false ),
> 
>              // for larger IXPs, it's quite intensive to display all the 
> graphs
>              'show_graphs_on_index_page' => env( 
> 'GRAPHER_BACKEND_SFLOW_SHOW_ON_INDEX', false ),
> 
>              // where to find the MRTG rrd files
>              'root'  => env( 'GRAPHER_BACKEND_SFLOW_ROOT', 
> 'http://10.81.7.10/grapher-sflow/' ),
>          ],

oops, you shouldn't change this file under any circumstances.  Can you 
reset this file using "git checkout"?

Any customisation you might need to make can be handled in .env.

> ------------------------------------------------------------------------
> /srv/ixpmanager/.env
> ------------------------------------------------------------------------
> GRAPHER_BACKENDS="mrtg|sflow"
> GRAPHER_BACKEND_SFLOW_ENABLED=true
> GRAPHER_BACKEND_SFLOW_ROOT="http://10.81.7.10/grapher-sflow"
> GRAPHER_ACCESS_CUSTOMER=0
> GRAPHER_ACCESS_P2P=1
> 
> ----------------------------------------------------------------

that looks correct.

> Files have been gathered as it should be;
> #/var/www/ixp_p2p/ipv4/bytes/p2p/src-00001$ ls
> p2p.ipv4.bytes.src-00001.dst-00003.rrd

You should use "rrdtool dump p2p.ipv4.bytes.src-00001.dst-00003.rrd" to 
ensure that sflow is reading the data correctly.

> I have got 2 peering ports UP and till now 2 rrd files accordingly;
> will leave "./sflow-to-rrd-handler --macdbtype=configured" for sometime
> to gather more of them;
> 
> ------------------------------------------------------------------
> local install of apache: added lines (used apache the same which was 
> installed with IXP manager)
> ------------------------------------------------------------------
> /etc/apache2/apache2.conf
> 
> Alias /grapher-sflow /var/www/ixp_p2p
> <Directory "/data/ixpmatrix">
>          Options None
>          AllowOverride None
> </Directory>
> ----------------------------------------------------------------
> shows the content of /var/www/ixp_p2p with all of its subdirs
> http://10.81.7.10/grapher-sflow/
> visual prtn-src:of apache https://prnt.sc/n0ijkk

Correct.

> -------------------------------------------------------------
> /usr/local/etc/ixpmanager.conf
> -------------------------------------------------------------
> 
> <sql>
>          dbase_type      = mysql
>          dbase_database  = ixpmanager
>          dbase_username  = ixpmanager
>          dbase_password  = *
>          dbase_hostname  = 127.0.0.1
>          #dbase_portname = /tmp/mysql.sock
> </sql>
> 
> <ixp>
>          sflow_rrdcached = 0
>          sflowtool = /usr/local/bin/sflowtool
>          sflowtool_opts = -4 -p 6343 -l
>          sflow_rrddir = /var/www/ixp_p2p
> #       debug = 1
>          apikey = *
>          apibaseurl = http://10.81.7.10/api/v4
>          macdbtype = configured
> </ixp>
> 
> Do I understand wright:
> 
> 1. If I see some page NOT with "dummy" and NOT with "no image found" it 
> means it's normally tries to interpreter sflow
> converted *.rrd's? -> visual prtn-src:of vlan graph: https://prnt.sc/n0im4x

The "dummy" / "no image found" are only for mrtg, not sflow.

> 2. As far as there will be enough *.rrd files the graph
> visual prtn-src:of vlan graph: https://prnt.sc/n0im4x
> will be shown with in/out statistics at the bottom as it should be?
> 3. GRAPHER_BACKENDS="mrtg|sflow" - tries to use mrtg -> failed -> then 
> sflow?

no, it means that the Grapher back-end uses both mrtg and sflow.  These 
are separate things: the MRTG grapher produces interface graphs and the 
sflow grapher produces point-to-point graphs.

> 4. from log means: production.ERROR: No backend available to process 
> this graph
> It's because of mrtg is not installed?
> 5. Do I understand documentation in a wright way: Overall peering graph 
> is available only by mrtg? I need to implement it too them?

yes, you need to install mrtg if you want regular interface graphs.

Nick

> 
> Thank you.
> 
> Vladislav.
> 
> ср, 20 мар. 2019 г. в 11:00, Nick Hilliard <nick at foobar.org 
> <mailto:nick at foobar.org>>:
> 
>     Vladislav Leontjev wrote on 20/03/2019 06:42:
>      > ./sflow-to-rrd-handler --macdbtype=configured
>      >
>      > runs whitout any error output; In my understanding I should then get
>      > rrd files into my mentioned dir in cfg?
>      >
> 
>     Yes, if there are MAC addresses defined in the database, you should see
>     .rrd files in a bunch of subdirectories in /var/www.
> 
>     If you're not seeing any files in there, then you need to use "--debug"
>     to see what's happening.
> 
>      > I'm using V4.9.2; In my situation (till next bug-fix) the way to get
>      > *.rrd is ./sflow-to-rrd-handler --macdbtype=configured ? or did I
>      > mess up something?
>     Just stick with v4.9.2 for the moment.
> 
>     Nick
> 
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