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The precision of rx_rate, tx_rate, rx_drop, and tx_drop of virtual and host network interfaces have been increased. Network traffic 100 times smaller can now be detected on network interface statistics. If traffic on the network interface is below the precision of the network interface statistics, it is not reflected in the statistics.
+++ This bug is a downstream clone. The original bug is: +++ +++ bug 1459908 +++ ====================================================================== Description of problem: Rest API does not report network statistics host "data.current.tx, data.current.rx" Version-Release number of selected component (if applicable): rhevm 4.0.3-0.1.el7ev rhvh 4.0.5.2 rhvh 4.0.7.1 How reproducible: everytime Steps to Reproduce: 1. install rhevm and hypervisor 2. connect hypervisor to rhevm 3. query app "curl -s -k -X GET -H "Accept: application/json" -u admin@internal:redhat https://rhevm.example.com/ovirt-engine/api/hosts/host_uuid/nics/nic_uuid/statistics" Actual results: "host_nic" : { "href" : "/ovirt-engine/api/hosts/0d6fdb5d-7fc5-40a7-a8fe-dd2ab75143a1/nics/ca159e66-1f76-4d9e-b072-d6146c665722", "id" : "ca159e66-1f76-4d9e-b072-d6146c665722" }, "name" : "data.current.rx", "description" : "Receive data rate", "href" : "/ovirt-engine/api/hosts/0d6fdb5d-7fc5-40a7-a8fe-dd2ab75143a1/nics/ca159e66-1f76-4d9e-b072-d6146c665722/statistics/ecd0559f-e88f-3330-94b4-1f091b0ffdf7", "id" : "ecd0559f-e88f-3330-94b4-1f091b0ffdf7" }, { "kind" : "gauge", "type" : "decimal", "unit" : "bytes_per_second", "values" : { "value" : [ { "datum" : 0 } ] }, "host_nic" : { "href" : "/ovirt-engine/api/hosts/0d6fdb5d-7fc5-40a7-a8fe-dd2ab75143a1/nics/ca159e66-1f76-4d9e-b072-d6146c665722", "id" : "ca159e66-1f76-4d9e-b072-d6146c665722" }, "name" : "data.current.tx", "description" : "Transmit data rate", "href" : "/ovirt-engine/api/hosts/0d6fdb5d-7fc5-40a7-a8fe-dd2ab75143a1/nics/ca159e66-1f76-4d9e-b072-d6146c665722/statistics/2c6fe105-4913-3f90-9425-07ddfeca5417", "id" : "2c6fe105-4913-3f90-9425-07ddfeca5417" }, { "kind" : "counter", "type" : "integer", "unit" : "bytes", "values" : { "value" : [ { "datum" : 286967489913 } ] }, Expected results: values for current statistics Additional info: (Originally by Marian Jankular)
RX/TX values in API are computed from RX/TX percentages and max bandwidth of the interface (provided by speed attribute), so if speed is zero, the also RX/TX are zeros. Could you please take a look at the value of speed attribute? If it's non-zero could you please check RX/TX values in webadmin if they are the same as in API? (Originally by Martin Perina)
in my setup i have speed 0, and rx/tx values are "<1" (Originally by Marian Jankular)
(In reply to Marian Jankular from comment #2) > in my setup i have speed 0, and rx/tx values are "<1" Can you try and run some traffic over? (Originally by Yaniv Kaul)
I did tried on our 4.1 environment which has load - 20 vms per node in web ui i see speed 1000, rx rate is 10, txrate is <1 however when using api i am still getting no value for current "name" : "data.current.rx", "description" : "Receive data rate", "href" : "/ovirt-engine/api/hosts/f1e96245-7ca3-4729-8abf-980501380a2b/nics/a442b3d7-7d3e-456b-a9cb-900d22171464/statistics/ecd0559f-e88f-3330-94b4-1f091b0ffdf7", "id" : "ecd0559f-e88f-3330-94b4-1f091b0ffdf7" }, { "kind" : "gauge", "type" : "decimal", "unit" : "bytes_per_second", "values" : { "value" : [ { "datum" : 0 } ] }, "host_nic" : { "href" : "/ovirt-engine/api/hosts/f1e96245-7ca3-4729-8abf-980501380a2b/nics/a442b3d7-7d3e-456b-a9cb-900d22171464", "id" : "a442b3d7-7d3e-456b-a9cb-900d22171464" }, "name" : "data.current.tx", "description" : "Transmit data rate", "href" : "/ovirt-engine/api/hosts/f1e96245-7ca3-4729-8abf-980501380a2b/nics/a442b3d7-7d3e-456b-a9cb-900d22171464/statistics/2c6fe105-4913-3f90-9425-07ddfeca5417", "id" : "2c6fe105-4913-3f90-9425-07ddfeca5417" }, { "kind" : "counter", "type" : "integer", "unit" : "bytes", "values" : { "value" : [ { "datum" : 199652833504 } ] (Originally by Marian Jankular)
I'm not able to reproduce on RHVM 4.1.2, it works as expected (checked on several hosts): 1. When rx/tx rate in webadmin is <1, then it's shown as 0 in restapi 2. When speed is non-zero and rx/tx rate in webadmin are different than <1, non-zero values are shown in restapi @Dan, is there any known issue around this area? (Originally by Martin Perina)
Moving to network team. (Originally by Oved Ourfali)
We are planning to release a metrics store next month that will allow you to collect raw value more accurately. The customer will probably want to move to this for monitoring. (Originally by ylavi)
If we change the value type then the DWH will need to be changed as well. (Originally by ylavi)
(In reply to Martin Perina from comment #5) > I'm not able to reproduce on RHVM 4.1.2, it works as expected (checked on > several hosts): > > 1. When rx/tx rate in webadmin is <1, then it's shown as 0 in restapi > 2. When speed is non-zero and rx/tx rate in webadmin are different than <1, > non-zero values are shown in restapi > > @Dan, is there any known issue around this area? I remember sradco complaining about something similar in the past. Do you recall a bz#? (Originally by danken)
Verified on - 4.2.0-0.0.master.20170901193740.git7900511.el7.centos (Originally by Michael Burman)
Dan - can we push to 4.1.z? A CFME bug depends on that one. (Originally by Oved Ourfali)
(In reply to Oved Ourfali from comment #14) > Dan - can we push to 4.1.z? > A CFME bug depends on that one. yes, it should not be hard. (Originally by danken)
This sneaked into 4.1.7. Not too bad.
I got unplausible values for rx and tx data rate in my local virtual environment. Would be good if the plausibility of the data rates can be checked in a physical environment.
(In reply to Dominik Holler from comment #19) > I got unplausible values for rx and tx data rate in my local virtual > environment. Would be good if the plausibility of the data rates can be > checked in a physical environment. Dominik, you are absolutely right, api report wrong data rate(tested with physical hosts). I will report a new bug for this issue, this should be fixed for both master and 4.1.7. The current report can be verified as we do report the current rx and tx, but report wrong data rates. Verified on - 4.2.0-0.0.master.20171022103432.gitaf9d8b6.el7.centos
To track the new issue please see BZ 1505328
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:3138