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rkt: Force rkt fetch to fetch from remote to conform the fetch policy.

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This commit is contained in:
Yifan Gu 2016-08-24 12:23:55 -07:00
parent ea805efa4f
commit de402ac2c5
1 changed files with 4 additions and 1 deletions
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5
pkg/kubelet/rkt/image.go
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@ -76,7 +76,10 @@ func (r *Runtime) PullImage(image kubecontainer.ImageSpec, pullSecrets []api.Sec
return err
}
if _, err := r.cli.RunCommand(&config, "fetch", dockerPrefix+img); err != nil {
// Today, `--no-store` will fetch the remote image regardless of whether the content of the image
// has changed or not. This causes performance downgrades when the image tag is ':latest' and
// the image pull policy is 'always'. The issue is tracked in https://github.com/coreos/rkt/issues/2937.
if _, err := r.cli.RunCommand(&config, "fetch", "--no-store", dockerPrefix+img); err != nil {
glog.Errorf("Failed to fetch: %v", err)
return err
}