Pass --keepalive-time 2 to curl to fix unexpected EOF flakes

Author: ixdy

hack/jenkins/dockerized-e2e-runner.sh

@@ -63,4 +63,4 @@ docker run --rm=true -i \
   "${docker_extra_args[@]:+${docker_extra_args[@]}}" \
   "${METADATA_SERVER_ADD_HOST_ARGS[@]:+${METADATA_SERVER_ADD_HOST_ARGS[@]}}" \
   gcr.io/google_containers/kubekins-test:0.11 \
-  bash -c "bash <(curl -fsS --retry 3 'https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/e2e-runner.sh')"
+  bash -c "bash <(curl -fsS --retry 3 --keepalive-time 2 'https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/e2e-runner.sh')"

hack/jenkins/e2e-runner.sh

@@ -162,7 +162,7 @@ function dump_cluster_logs() {
 
 ### Pre Set Up ###
 if running_in_docker; then
-    curl -fsSL --retry 3 -o "${WORKSPACE}/google-cloud-sdk.tar.gz" 'https://dl.google.com/dl/cloudsdk/channels/rapid/google-cloud-sdk.tar.gz'
+    curl -fsSL --retry 3 --keepalive-time 2 -o "${WORKSPACE}/google-cloud-sdk.tar.gz" 'https://dl.google.com/dl/cloudsdk/channels/rapid/google-cloud-sdk.tar.gz'
     install_google_cloud_sdk_tarball "${WORKSPACE}/google-cloud-sdk.tar.gz" /
 fi
 
@@ -286,7 +286,7 @@ cd kubernetes
 # Upload build start time and k8s version to GCS, but not on PR Jenkins.
 # On PR Jenkins this is done before the build.
 if [[ ! "${JOB_NAME}" =~ -pull- ]]; then
-    JENKINS_BUILD_STARTED=true bash <(curl -fsS --retry 3 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh")
+    JENKINS_BUILD_STARTED=true bash <(curl -fsS --retry 3 --keepalive-time 2 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh")
 fi
 
 # Have cmd/e2e run by goe2e.sh generate JUnit report in ${WORKSPACE}/junit*.xml
@@ -304,7 +304,7 @@ if [[ ( ${KUBERNETES_PROVIDER} == "gce" || ${KUBERNETES_PROVIDER} == "gke" ) &&
   gcp_list_resources="true"
   # Always pull the script from HEAD, overwriting the local one if it exists.
   # We do this to pick up fixes if we are running tests from a branch or tag.
-  curl -fsS --retry 3 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/cluster/gce/list-resources.sh" > "${gcp_list_resources_script}"
+  curl -fsS --retry 3 --keepalive-time 2 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/cluster/gce/list-resources.sh" > "${gcp_list_resources_script}"
 else
   gcp_list_resources="false"
 fi

hack/jenkins/upload-finished.sh

@@ -39,5 +39,5 @@ echo
 if [[ -x ./hack/jenkins/upload-to-gcs.sh ]]; then
   ./hack/jenkins/upload-to-gcs.sh
 else
-  curl -fsS --retry 3 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh" | bash -
+  curl -fsS --retry 3 --keepalive-time 2 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh" | bash -
 fi

hack/jenkins/upload-started.sh

@@ -34,5 +34,5 @@ echo
 if [[ -x ./hack/jenkins/upload-to-gcs.sh ]]; then
   ./hack/jenkins/upload-to-gcs.sh
 else
-  curl -fsS --retry 3 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh" | bash -
+  curl -fsS --retry 3 --keepalive-time 2 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh" | bash -
 fi

hack/lib/etcd.sh

@@ -74,12 +74,12 @@ kube::etcd::install() {
     cd "${KUBE_ROOT}/third_party"
     if [[ $(uname) == "Darwin" ]]; then
       download_file="etcd-v${ETCD_VERSION}-darwin-amd64.zip"
-      curl -fsSLO --retry 3 https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/"${download_file}"
+      curl -fsSLO --retry 3 --keepalive-time 2 https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/"${download_file}"
       unzip -o "${download_file}"
       ln -fns "etcd-v${ETCD_VERSION}-darwin-amd64" etcd
       rm "${download_file}"
     else
-      curl -fsSL --retry 3 https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz | tar xzf -
+      curl -fsSL --retry 3 --keepalive-time 2 https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz | tar xzf -
       ln -fns "etcd-v${ETCD_VERSION}-linux-amd64" etcd
     fi
     kube::log::info "etcd v${ETCD_VERSION} installed. To use:"