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Kube-proxy requests 2x cpu shares of addons. #22022

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Feb 26, 2016
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Kube-proxy requests 2x cpu shares of addons. #22022

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4 changes: 3 additions & 1 deletion cluster/saltbase/salt/kube-proxy/init.sls
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,8 @@
- mode: 644
- makedirs: true
- dir_mode: 755
- context:
cpurequest: '200m'
- require:
- service: docker
- service: kubelet
Expand All @@ -26,7 +28,7 @@
- group: root
- mode: 644

#stop legacy kube-proxy service
#stop legacy kube-proxy service
stop_kube-proxy:
service.dead:
- name: kube-proxy
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3 changes: 3 additions & 0 deletions cluster/saltbase/salt/kube-proxy/kube-proxy.manifest
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Expand Up @@ -31,6 +31,9 @@ spec:
containers:
- name: kube-proxy
image: {{pillar['kube_docker_registry']}}/kube-proxy:{{pillar['kube-proxy_docker_tag']}}
resources:
requests:
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We should set limits ideally.

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I don't want to curtail kube-proxy, I want it to get what it needs (plus I'm not 100% sure how much it will need).

But I guess it doesn't make sense giving unlimited cpu to the proxy if nothing can run on the node, and if it bumps into the limit it's because something else with higher priority came along, and it'll just be slow, unlike memory.

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requests are OK for now I guess.
Depending on where we go with the QoS policies, this might make kube-proxy
have less priority. But given that it is a DaemonSet, I guess the policies
will be thwarted anyways.

On Thu, Feb 25, 2016 at 3:25 PM, Prashanth B notifications@github.com
wrote:

In cluster/saltbase/salt/kube-proxy/kube-proxy.manifest
#22022 (comment)
:

@@ -31,6 +31,9 @@ spec:
containers:

  • name: kube-proxy
    image: {{pillar['kube_docker_registry']}}/kube-proxy:{{pillar['kube-proxy_docker_tag']}}
    • resources:
    •  requests:

I don't want to curtail kube-proxy, I want it to get what it needs (plus
I'm not 100% sure how much it will need).

But I guess it doesn't make sense giving unlimited cpu to the proxy if
nothing can run on the node, and if it bumps into the limit it's because
something else with higher priority came along, and it'll just be slow,
unlike memory.

—
Reply to this email directly or view it on GitHub
https://github.com/kubernetes/kubernetes/pull/22022/files#r54182925.

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Yeah none of the master components set limits, for the same reason. If kube-proxy on a node is really slow it could impact a cluster spanning service, so I think we should leave it as request for now and revisit if required.

cpu: {{ cpurequest }}
command:
- /bin/sh
- -c
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