How to monitor LXC CPU usage ?

[ca_maer]

How would I go about monitoring the CPU usage for an LXC container ? Solutions like in Nagios reads /proc but since the CPU are shared we get a lot of false positive.

Example:
CT A has 4 cores and uses 2 at 100% - 50% total CPU usage
CT B has 2 cores which are shared with CT A - 100% CPU usage (false reading since this CT does nothing)

Thanks

 

[sg90]

Are you looking at running something on each VM, or happy with something running on the node?

If so then on the node you can make use of the built in LXC tools such as lxc-info

 

[ca_maer]

Are you looking at running something on each VM, or happy with something running on the node?

If so then on the node you can make use of the built in LXC tools such as lxc-info

I'm open to both. I've look into lxc-info or lxc-top but it gives CPU use in seconds and not %. I'm not sure how I could convert it.

 

[ca_maer]

Still looking for some clue !

 

[lckmt]

maybe have a look at netdata

 

[ca_maer]

maybe have a look at netdata

Yeah I've look into netdata but the end goal is to have a script on the host that would report the CPU usage so we could plug it into Nagios for alerting.