Have you looked at cpuplugd -
https://www.ibm.com/support/knowledgecenter/linuxonibm/com.ibm.linux.z.lhdd/lhdd_r_cpuplugdcmd.html
- which uses a set of rules to dynamically enable or disable CPUs and
also dynamically add or remove memory.
Mike Friesenegger
On 10/27/2016 06:56 PM, PHILIP TULLY wrote:
The issue here is we have multiple docker engines on multiple lpars (
we still think from an economics and manageability point of view that
under VM is better than on the metal).
We have been doing the testing to have one engine pick up the workload
form another that has failed, this works.
We are still trying to make the environment more flexible. These
docker engine VMs are sized at 60G and 8 vcpu but can grow (without
ipl) to 120G and 16 vcpu's. It is the automation piece to exploit
the flexibility of the platform that we need to figure out. Yes, we
can define full and "waste" resources but at these sizes the resources
are big.
On Tue, Oct 25, 2016 at 04:57 PM, R P Herrold wrote:
On Tue, 25 Oct 2016, PHILIP TULLY wrote:
We are looking to implement Docker on Z, as we have begun the testing
part of the issue is to be able to grow a docker engine and growing it
dynamically based on it's current needs especially when a node in the
Docker cluster fails.
So the question is does anyone see a way for the VM system to see the
memory resource grow, which would allow me to add more dynamically.
I thought one point of Docker was to have 'fast to spin up'
instances, ready to spin up, which then pulled in ephemeral
data from a back end persistent store, so that a swarm of them
handled load spikes, and once the spike passes, that the
excess units are shut down
-- Russ herrold
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