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Merge pull request #56692 from mborsz/backups

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Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Modify 'restore-from-backup.sh' to work in multinode etcd cluster.

**What this PR does / why we need it**:
This PR modifies cluster/restore-from-backup.sh to work in multinode etcd cluster.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2017-12-07 10:23:48 -08:00 committed by GitHub
commit 1fcbbd38a7
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1 changed files with 8 additions and 5 deletions
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cluster/restore-from-backup.sh
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@ -62,6 +62,9 @@ ETCD_API="$(echo $VERSION_CONTENTS | cut -d '/' -f 2)"
# NOTE: NAME HAS TO BE EQUAL TO WHAT WE USE IN --name flag when starting etcd. # NOTE: NAME HAS TO BE EQUAL TO WHAT WE USE IN --name flag when starting etcd.
NAME="${NAME:-etcd-$(hostname)}" NAME="${NAME:-etcd-$(hostname)}"
INITIAL_CLUSTER="${INITIAL_CLUSTER:-${NAME}=http://localhost:2380}"
INITIAL_ADVERTISE_PEER_URLS="${INITIAL_ADVERTISE_PEER_URLS:-http://localhost:2380}"
# Port on which etcd is exposed. # Port on which etcd is exposed.
etcd_port=2379 etcd_port=2379
event_etcd_port=4002 event_etcd_port=4002
@ -101,7 +104,7 @@ wait_for_cluster_healthy() {
# Wait until etcd and apiserver pods are down. # Wait until etcd and apiserver pods are down.
wait_for_etcd_and_apiserver_down() { wait_for_etcd_and_apiserver_down() {
for i in $(seq 120); do for i in $(seq 120); do
etcd=$(docker ps | grep etcd | grep -v etcd-empty-dir | grep -v etcd-monitor | wc -l) etcd=$(docker ps | grep etcd-server | wc -l)
apiserver=$(docker ps | grep apiserver | wc -l) apiserver=$(docker ps | grep apiserver | wc -l)
# TODO: Theoretically it is possible, that apiserver and or etcd # TODO: Theoretically it is possible, that apiserver and or etcd
# are currently down, but Kubelet is now restarting them and they # are currently down, but Kubelet is now restarting them and they
@ -134,6 +137,8 @@ if ! wait_for_etcd_and_apiserver_down; then
exit 1 exit 1
fi fi
read -rsp $'Press enter when all etcd instances are down...\n'
# Create the sort of directory structure that etcd expects. # Create the sort of directory structure that etcd expects.
# If this directory already exists, remove it. # If this directory already exists, remove it.
BACKUP_DIR="/var/tmp/backup" BACKUP_DIR="/var/tmp/backup"
@ -185,15 +190,13 @@ elif [ "${ETCD_API}" == "etcd3" ]; then
# Run etcdctl snapshot restore command and wait until it is finished. # Run etcdctl snapshot restore command and wait until it is finished.
# setting with --name in the etcd manifest file and then it seems to work. # setting with --name in the etcd manifest file and then it seems to work.
# TODO(jsz): This command may not work in case of HA. docker run -v ${BACKUP_DIR}:/var/tmp/backup --env ETCDCTL_API=3 \
image=$(docker run -d -v ${BACKUP_DIR}:/var/tmp/backup --env ETCDCTL_API=3 \
"gcr.io/google_containers/etcd:${ETCD_VERSION}" /bin/sh -c \ "gcr.io/google_containers/etcd:${ETCD_VERSION}" /bin/sh -c \
"/usr/local/bin/etcdctl snapshot restore ${BACKUP_DIR}/${snapshot} --name ${NAME} --initial-cluster ${NAME}=http://localhost:2380; mv /${NAME}.etcd/member /var/tmp/backup/") "/usr/local/bin/etcdctl snapshot restore ${BACKUP_DIR}/${snapshot} --name ${NAME} --initial-cluster ${INITIAL_CLUSTER} --initial-advertise-peer-urls ${INITIAL_ADVERTISE_PEER_URLS}; mv /${NAME}.etcd/member /var/tmp/backup/"
if [ "$?" -ne "0" ]; then if [ "$?" -ne "0" ]; then
echo "Docker container didn't started correctly" echo "Docker container didn't started correctly"
exit 1 exit 1
fi fi
echo "Prepare container exit code: $(docker wait ${image})"
rm -f "${BACKUP_DIR}/${snapshot}" rm -f "${BACKUP_DIR}/${snapshot}"
fi fi