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data/bootstrap: pass volume-plugin-dir to kubelet param to avoid flexvolume warnings #1681

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vrutkovs
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@vrutkovs vrutkovs commented Apr 26, 2019

Bootstrap kubelet attempts to create /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ for flexvolume plugins and warns readonly FS in kubelet log:

Apr 25 13:53:45 ip-10-0-8-85 hyperkube[1358]: W0425 13:53:45.762647    1358 probe.go:271] Flexvolume plugin directory at /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ does not exist. Recreating.
Apr 25 13:53:45 ip-10-0-8-85 hyperkube[1358]: E0425 13:53:45.762700    1358 plugins.go:517] Error initializing dynamic plugin prober: Error (re-)creating driver directory: mkdir /usr/libexec/kubernetes: read-only file system

This PR would ensure /etc/kubernetes/kubelet-plugins/volume/exec is used for flexvolume plugins, this would prevent this misleading warning from showing.

MCO does the same on masters: openshift/machine-config-operator#315

…bout flexvolume

Boostrap kubelet attempts to create /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ for flexvolume plugins and warns readonly FS in kubelet log. This commit would ensure /etc/kubernetes/kubelet-plugins/volume/exec is used for flexvolume plugins, this would prevent this misleading warning from showing
@openshift-ci-robot openshift-ci-robot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Apr 26, 2019
@abhinavdahiya
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  1. what errors?
  2. how did you decide that location

@vrutkovs
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Updated description, see also openshift/machine-config-operator#315

@gnufied
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gnufied commented Apr 26, 2019

yeah I guess this is a minor annoyance. We do not expect an actual flexvolume plugin to be deployed on bootstrap kubelet!

@vrutkovs
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/retest

@abhinavdahiya
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/lgtm

@openshift-ci-robot openshift-ci-robot added the lgtm Indicates that a PR is ready to be merged. label Apr 26, 2019
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhinavdahiya, vrutkovs

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@openshift-ci-robot openshift-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Apr 26, 2019
@openshift-merge-robot openshift-merge-robot merged commit b1de2ac into openshift:master Apr 26, 2019
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5 participants