Revert "Revert "Merge pull request kubernetes#28172 from zmerlynn/push-alt-ci""

This reverts commit fe64293.

Author: zmerlynn

build/common.sh

@@ -1229,6 +1229,16 @@ function kube::release::gcs::copy_release_artifacts() {
   fi
 
   gsutil ls -lhr "${gcs_destination}" || return 1
+
+  if [[ -n "${KUBE_GCS_RELEASE_BUCKET_MIRROR:-}" ]]; then
+    local -r gcs_mirror="gs://${KUBE_GCS_RELEASE_BUCKET_MIRROR}/${KUBE_GCS_RELEASE_PREFIX}"
+    kube::log::status "Mirroring build to ${gcs_mirror}"
+    gsutil -q -m "${gcs_options[@]+${gcs_options[@]}}" rsync -d -r "${gcs_destination}" "${gcs_mirror}" || return 1
+    if [[ ${KUBE_GCS_MAKE_PUBLIC} =~ ^[yY]$ ]]; then
+      kube::log::status "Marking all uploaded mirror objects public"
+      gsutil -q -m acl ch -R -g all:R "${gcs_mirror}" >/dev/null 2>&1 || return 1
+    fi
+  fi
 }
 
 # Publish a new ci version, (latest,) but only if the release files actually
@@ -1493,7 +1503,19 @@ function kube::release::gcs::verify_ci_ge() {
 #   If new version is greater than the GCS version
 function kube::release::gcs::publish() {
   local -r publish_file="${1-}"
-  local -r publish_file_dst="gs://${KUBE_GCS_RELEASE_BUCKET}/${publish_file}"
+
+  kube::release::gcs::publish_to_bucket "${KUBE_GCS_RELEASE_BUCKET}" "${publish_file}" || return 1
+
+  if [[ -n "${KUBE_GCS_RELEASE_BUCKET_MIRROR:-}" ]]; then
+    kube::release::gcs::publish_to_bucket "${KUBE_GCS_RELEASE_BUCKET_MIRROR}" "${publish_file}" || return 1
+  fi
+}
+
+
+function kube::release::gcs::publish_to_bucket() {
+  local -r publish_bucket="${1}"
+  local -r publish_file="${2}"
+  local -r publish_file_dst="gs://${publish_bucket}/${publish_file}"
 
   mkdir -p "${RELEASE_STAGE}/upload" || return 1
   echo "${KUBE_GCS_PUBLISH_VERSION}" > "${RELEASE_STAGE}/upload/latest" || return 1
@@ -1506,7 +1528,7 @@ function kube::release::gcs::publish() {
     gsutil acl ch -R -g all:R "${publish_file_dst}" >/dev/null 2>&1 || return 1
     gsutil setmeta -h "Cache-Control:private, max-age=0" "${publish_file_dst}" >/dev/null 2>&1 || return 1
     # If public, validate public link
-    local -r public_link="https://storage.googleapis.com/${KUBE_GCS_RELEASE_BUCKET}/${publish_file}"
+    local -r public_link="https://storage.googleapis.com/${publish_bucket}/${publish_file}"
     kube::log::status "Validating uploaded version file at ${public_link}"
     contents="$(curl -s "${public_link}")"
   else

build/push-ci-build.sh

@@ -31,6 +31,7 @@ KUBE_GCS_MAKE_PUBLIC='y'
 KUBE_GCS_UPLOAD_RELEASE='y'
 KUBE_GCS_DELETE_EXISTING='n'
 : ${KUBE_GCS_RELEASE_BUCKET:='kubernetes-release'}
+: ${KUBE_GCS_RELEASE_BUCKET_MIRROR:='kubernetes-release-dev'}
 KUBE_GCS_RELEASE_PREFIX="ci/${LATEST}"
 KUBE_GCS_PUBLISH_VERSION="${LATEST}"