Cacti (home)ForumsRepositoryDocumentation
Cacti: offical forums and support  

 FAQFAQ   SearchSearch   MemberlistMemberlist    RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in    


Cacti "loosing" data on virtual hosts

 
Post new topic   Reply to topic    Cacti Forum Index -> Help: Linux/Unix Specific
Author Message
SoftDux



Joined: 19 Jun 2008
Posts: 37
Location: Johannesburg, South Africa
PostPosted: Mon Oct 06, 2008 2:37 am    Post subject: Cacti "loosing" data on virtual hosts Reply with quote
Hi,

I have a XEN server with 4 XEN VPS's, and have set each VPS's network interface name as vifandr0, vifplut0, vifwise0 & vifkeith0

For some odd reason, it tends to loose on of the interfaces data from time to time.

The one that's just done this is vifwise0 - On the main host, when I run ifconfig, I can see the interface is up:

Code:
vifwise0  Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:102771 errors:0 dropped:0 overruns:0 frame:0
          TX packets:581620 errors:0 dropped:156 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:29892687 (28.5 MiB)  TX bytes:65585542 (62.5 MiB)


Then, in Cacti > Devices > localhost > Create Graphs for this Host, I can sometimes see at least 9 entries for vifwise0 (or any other interfaces), with one being up, and the others being down. When I press the green circle to fresh the list, the number of entries are often less, but there's at least 2 that are down, and one that's up. The strange things, is that they all have the same Hardware Address, Name & everything. So, I choose the one that's up, and it start graphing on the new interface, but the old interface doesn't.

So, for this host, I now have 2 inbound & 2 outbound data sources - both with the same name, as can be seen here:



So, why does this happen?
Back to top
TheWitness
Developer


Joined: 14 May 2002
Posts: 9736
Location: MI, USA
PostPosted: Mon Oct 06, 2008 6:44 am    Post subject: Reply with quote
Verbose Query Please. Likely an SNMP issue with XEN. Check for Net-SNMP updates. But start with Verbose Query.

TheWitness
Back to top
SoftDux



Joined: 19 Jun 2008
Posts: 37
Location: Johannesburg, South Africa
PostPosted: Wed Oct 08, 2008 12:03 am    Post subject: Reply with quote
Here's the debug info:

Code:

RRDTool Command:
/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Traffic - wiseguy" \
--rigid \
--base=1000 \
--height=150 \
--width=650 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="bytes per second" \
--slope-mode \
--font TITLE:10: \
--font AXIS:8: \
--font LEGEND:8: \
--font UNIT:8: \
DEF:a="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_in:AVERAGE \
DEF:b="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_in:MAX \
DEF:c="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_out:AVERAGE \
DEF:d="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_out:MAX \
AREA:a#00CF00FF:"Inbound"  \
GPRINT:a:LAST:" Current\:%8.2lf %s"  \
GPRINT:a:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:b:MAX:"Maximum\:%8.2lf %s"  \
COMMENT:"Total In\:  7.86 MB\n"  \
LINE1:c#002A97FF:"Outbound"  \
GPRINT:c:LAST:"Current\:%8.2lf %s"  \
GPRINT:c:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:d:MAX:"Maximum\:%8.2lf %s"  \
COMMENT:"Total Out\: 15.41 MB"
RRDTool Says:
OK



And it's stoppped graphing the traffic as well


Here's the debugging info for the other / old interface

Code:

RRDTool Command:
/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Saturn - Traffic - vifwise0" \
--rigid \
--base=1000 \
--height=150 \
--width=650 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="bytes per second" \
--slope-mode \
--font TITLE:10: \
--font AXIS:8: \
--font LEGEND:8: \
--font UNIT:8: \
DEF:a="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_in:AVERAGE \
DEF:b="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_in:MAX \
DEF:c="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_out:AVERAGE \
DEF:d="/var/www/html/graphs/rra/saturn_traffic_in_58.rrd":traffic_out:MAX \
AREA:a#00CF00FF:"Inbound"  \
GPRINT:a:LAST:" Current\:%8.2lf %s"  \
GPRINT:a:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:b:MAX:"Maximum\:%8.2lf %s"  \
COMMENT:"Total In\:  7.86 MB\n"  \
LINE1:c#002A97FF:"Outbound"  \
GPRINT:c:LAST:"Current\:%8.2lf %s"  \
GPRINT:c:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:d:MAX:"Maximum\:%8.2lf %s"  \
COMMENT:"Total Out\: 15.41 MB"
RRDTool Says:
OK
Back to top
SoftDux



Joined: 19 Jun 2008
Posts: 37
Location: Johannesburg, South Africa
PostPosted: Tue Oct 14, 2008 12:25 am    Post subject: Reply with quote
Can someone please help me with this?
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Cacti Forum Index -> Help: Linux/Unix Specific All times are GMT - 5 Hours
Page 1 of 1

 



Powered by phpBB © 2001, 2005 phpBB Group