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I am trying to gather some cpu metrics from nova instances on devstack newton.

asked 2017-02-04 10:56:40 -0500

SyCode7 gravatar image

updated 2017-02-04 11:07:59 -0500

I am trying to gather some cpu metrics from nova instances on devstack newton.I am employing [JMX] ( approach, however even after configuring the security group rules to permit the traffic, the connection still fails. Has anyone ever faced/overcome this challenge ? I am also not too sure if there are requisite configuration I have left out.

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Is it possible that there is a firewall running in the guest itself? Is other connectivity (e.g. SSH) working end to end?

sgordon gravatar imagesgordon ( 2017-02-04 15:43:10 -0500 )edit

@sgordon I can ssh into these instances, pinging out for within them is also possible. I have confirmed that there is no firewall. I really don't know what is happening, I also ensured that the security rules are permissive for all HTTP, TCP, ICMP and SSH traffic.

SyCode7 gravatar imageSyCode7 ( 2017-02-09 11:33:58 -0500 )edit

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answered 2017-02-26 07:35:26 -0500

SyCode7 gravatar image

In order to solve this issue, I finally installed ceilometer. I can get cpu_util on an instance basis now.

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answered 2017-02-26 14:29:10 -0500

raddaoui gravatar image

I would say try to to do a tcpdump on the interface used to send the data and check if there is data being sent. If yes then you probably didn't configure the security group correctly! just allow everything to flow in/out and recheck. If not then it must be a problem of you data collector.

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Asked: 2017-02-04 10:56:40 -0500

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Last updated: Feb 26 '17