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Merge pull request #54009 from MrHohn/delete-custom-subnetwork-fix

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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>.

Fix gce util script for getting PREEXISTING_NETWORK_MODE

**What this PR does / why we need it**:
Using `x_gcloud_subnet_mode` seems return nothing and broke the custom network cleanup logic, causing [pull-kubernetes-e2e-gce-gpu](https://k8s-testgrid.appspot.com/kubernetes-presubmits#pull-kubernetes-e2e-gce-gpu) constantly leaking network resource.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/kubernetes/test-infra/issues/5019

**Special notes for your reviewer**:
/assign @bowei 
cc @jingax10 @krzyzacy @mindprince 

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2017-10-17 19:34:25 -07:00 committed by GitHub
commit 79d2f4f41c
1 changed files with 14 additions and 2 deletions
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16
cluster/gce/util.sh
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@ -771,6 +771,18 @@ function check-existing() {
fi
}
# TODO(#54017): Remove below logics for handling deprecated network mode field.
# `x_gcloud_mode` was replaced by `x_gcloud_subnet_mode` in gcloud 175.0.0 and
# the content changed as well. Keeping such logic to make the transition eaiser.
function check-network-mode() {
local mode="$(gcloud compute networks list --filter="name=('${NETWORK}')" --project ${NETWORK_PROJECT} --format='value(x_gcloud_subnet_mode)' || true)"
if [[ -z "${mode}" ]]; then
mode="$(gcloud compute networks list --filter="name=('${NETWORK}')" --project ${NETWORK_PROJECT} --format='value(x_gcloud_mode)' || true)"
fi
# The deprecated field uses lower case. Convert to upper case for consistency.
echo "$(echo $mode | tr [a-z] [A-Z])"
}
function create-network() {
if ! gcloud compute networks --project "${NETWORK_PROJECT}" describe "${NETWORK}" &>/dev/null; then
# The network needs to be created synchronously or we have a race. The
@ -783,7 +795,7 @@ function create-network() {
gcloud compute networks create --project "${NETWORK_PROJECT}" "${NETWORK}" --mode="${network_mode}"
else
PREEXISTING_NETWORK=true
PREEXISTING_NETWORK_MODE="$(gcloud compute networks list --filter="name=('${NETWORK}')" --project ${NETWORK_PROJECT} --format='value(x_gcloud_subnet_mode)' || true)"
PREEXISTING_NETWORK_MODE="$(check-network-mode)"
echo "Found existing network ${NETWORK} in ${PREEXISTING_NETWORK_MODE} mode."
fi
@ -946,7 +958,7 @@ function delete-network() {
function delete-subnetworks() {
if [[ ${ENABLE_IP_ALIASES:-} != "true" ]]; then
# If running in custom mode network we need to delete subnets
mode="$(gcloud compute networks list --filter="name=('${NETWORK}')" --project ${NETWORK_PROJECT} --format='value(x_gcloud_subnet_mode)' || true)"
mode="$(check-network-mode)"
if [[ "${mode}" == "CUSTOM" ]]; then
if [[ "${ENABLE_BIG_CLUSTER_SUBNETS}" = "true" ]]; then
echo "Deleting default subnets..."