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Merge pull request #41674 from ixdy/etcd-empty-dir-cleanup-busybox

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Automatic merge from submit-queue

Base etcd-empty-dir-cleanup on busybox, run as nobody, and update to etcdctl 3.0.14

**What this PR does / why we need it**: since the `etcd-empty-dir-cleanup` image just uses a simple shell script and `etcdctl`, we can base it on busybox, which is a smaller target than alpine.

I've also updated this to use an `etcdctl` from etcd 3.0.14, which matches the version of etcd we're running in 1.6 clusters (I believe), and changed the tag to match the `etcdctl` version.

Tested in my own e2e cluster, where it seems to work.

I haven't pushed the image yet, so e2e tests *may* fail. Tagging `do-not-merge`; if you think this looks good, I'll push the image and retest.

**Release note**:

```release-note
```

cc @timstclair @mml @wojtek-t
This commit is contained in:
Kubernetes Submit Queue 2017-02-23 21:25:56 -08:00 committed by GitHub
commit 84b74074a4
4 changed files with 15 additions and 13 deletions
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2
cluster/addons/etcd-empty-dir-cleanup/etcd-empty-dir-cleanup.yaml
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@ -10,4 +10,4 @@ spec:
dnsPolicy: Default dnsPolicy: Default
containers: containers:
- name: etcd-empty-dir-cleanup - name: etcd-empty-dir-cleanup
image: gcr.io/google_containers/etcd-empty-dir-cleanup:0.0.1 image: gcr.io/google-containers/etcd-empty-dir-cleanup:3.0.14.0

14
cluster/images/etcd-empty-dir-cleanup/Dockerfile
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@ -12,12 +12,14 @@
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
FROM gliderlabs/alpine FROM busybox
COPY etcdctl etcd-empty-dir-cleanup.sh /
RUN chmod a+rx /etcdctl /etcd-empty-dir-cleanup.sh
RUN apk-install bash
ADD etcd-empty-dir-cleanup.sh etcd-empty-dir-cleanup.sh
ADD etcdctl etcdctl
ENV ETCDCTL /etcdctl ENV ETCDCTL /etcdctl
ENV SLEEP_SECOND 3600 ENV SLEEP_SECOND 3600
RUN chmod +x etcd-empty-dir-cleanup.sh
CMD bash /etcd-empty-dir-cleanup.sh USER nobody:nogroup
ENTRYPOINT ["/etcd-empty-dir-cleanup.sh"]

6
cluster/images/etcd-empty-dir-cleanup/Makefile
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@ -14,9 +14,9 @@
.PHONY: build push .PHONY: build push
ETCD_VERSION = 2.2.1 ETCD_VERSION = 3.0.14
IMAGE = gcr.io/google_containers/etcd-empty-dir-cleanup IMAGE = gcr.io/google-containers/etcd-empty-dir-cleanup
TAG = 0.0.1 TAG = 3.0.14.0
clean: clean:
rm -rf etcdctl etcd-v$(ETCD_VERSION)-linux-amd64 etcd-v$(ETCD_VERSION)-linux-amd64.tar.gz rm -rf etcdctl etcd-v$(ETCD_VERSION)-linux-amd64 etcd-v$(ETCD_VERSION)-linux-amd64.tar.gz

6
cluster/images/etcd-empty-dir-cleanup/etcd-empty-dir-cleanup.sh
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@ -1,4 +1,4 @@
#!/bin/bash #!/bin/sh
# Copyright 2016 The Kubernetes Authors. # Copyright 2016 The Kubernetes Authors.
# #
@ -17,7 +17,7 @@
echo "Removing empty directories from etcd..." echo "Removing empty directories from etcd..."
cleanup_empty_dirs () { cleanup_empty_dirs () {
if [[ $(${ETCDCTL} ls $1) ]]; then if [ "$(${ETCDCTL} ls $1)" ]; then
for SUBDIR in $(${ETCDCTL} ls -p $1 | grep "/$") for SUBDIR in $(${ETCDCTL} ls -p $1 | grep "/$")
do do
cleanup_empty_dirs ${SUBDIR} cleanup_empty_dirs ${SUBDIR}
@ -34,4 +34,4 @@ do
cleanup_empty_dirs "/registry" cleanup_empty_dirs "/registry"
echo "Done with cleanup." echo "Done with cleanup."
sleep ${SLEEP_SECOND} sleep ${SLEEP_SECOND}
done done