[Containers] container monitoring
asarai at suse.com
Tue Mar 8 15:40:49 MST 2016
> Hello all
> what is the best tools to monitor i/o, filesystem,cpu, memory, ...of
> each container either on one node or multinode?
> i/o, filesystem are the most important ones to monitor.
On a single-node basis, you can get /some/ information from `docker
stats`, which uses information from the related cgroups of the
containers (this includes both the usage and limit for most of things
you mention -- though I'm not sure what you mean by "filesystem").
There's a new feature that's being worked on in Docker to allow a
container to join the cgroups of another container, once that's done you
could run a container with your tooling and connect it to a container
you want to monitor and then scoop up the output (see next point).
As for multi-node, I'm not really sure if there's a dedicated tool. You
could try playing with something like logstash and elasticsearch to
"log" the usage statistics and do analytics on them. I've never use
logstash personally, so I can't really comment on how well that would
work for your usecase (which you haven't told us).
Docker Core Specialist
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