Automatically install periodic cleanup script on macOS and Linux

hack/jenkins/cron/Darwin.crontab

@@ -0,0 +1 @@
+*/20 * * * * /Users/jenkins/cleanup-and-reboot.sh

hack/jenkins/cron/cleanup-and-reboot_Linux.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+# Periodically cleanup and reboot if no Jenkins subprocesses are running.
+#
+# Installation:
+#   install cleanup-and-reboot.linux /etc/cron.hourly/cleanup-and-reboot
+
+function check_jenkins() {
+  jenkins_pid="$(pidof java)"
+  if [[ "${jenkins_pid}" = "" ]]; then
+          return
+  fi
+  pstree "${jenkins_pid}" \
+        | grep -v java \
+        && echo "jenkins is running at pid ${jenkins_pid} ..." \
+        && exit 1
+}
+
+check_jenkins
+logger "cleanup-and-reboot running - may shutdown in 60 seconds"
+wall "cleanup-and-reboot running - may shutdown in 60 seconds"
+
+sleep 60
+
+check_jenkins
+logger "cleanup-and-reboot is happening!"
+
+# kill jenkins to avoid an incoming request
+killall java
+
+# disable localkube, kubelet
+systemctl list-unit-files --state=enabled \
+        | grep kube \
+        | awk '{ print $1 }' \
+        | xargs systemctl disable
+
+# update and reboot
+apt update -y \
+        && apt upgrade -y \
+        && reboot

hack/jenkins/linux_integration_tests_kvm.sh

@@ -30,5 +30,7 @@ VM_DRIVER="kvm2"
 JOB_NAME="KVM_Linux"
 PARALLEL_COUNT=4
 
+install cron/cleanup-and-reboot.linux /etc/cron.hourly/cleanup-and-reboot
+
 # Download files and set permissions
 source ./common.sh

hack/jenkins/linux_integration_tests_none.sh

@@ -50,5 +50,7 @@ systemctl is-active --quiet kubelet \
   && echo "stopping kubelet" \
   && sudo systemctl stop kubelet
 
+install cron/cleanup-and-reboot.linux /etc/cron.hourly/cleanup-and-reboot
+
 # Download files and set permissions
 source ./common.sh

hack/jenkins/linux_integration_tests_virtualbox.sh

@@ -30,5 +30,7 @@ VM_DRIVER="virtualbox"
 JOB_NAME="VirtualBox_Linux"
 PARALLEL_COUNT=4
 
+install cron/cleanup-and-reboot.linux /etc/cron.hourly/cleanup-and-reboot
+
 # Download files and set permissions
 source ./common.sh

hack/jenkins/osx_integration_tests_hyperkit.sh

@@ -33,5 +33,8 @@ EXTRA_ARGS="--bootstrapper=kubeadm"
 EXTRA_START_ARGS=""
 PARALLEL_COUNT=3
 
+install cron/cleanup_and_reboot_Darwin.sh $HOME/cleanup_and_reboot.sh
+crontab < cron/Darwin.crontab
+
 # Download files and set permissions
 source common.sh

hack/jenkins/osx_integration_tests_virtualbox.sh

@@ -31,5 +31,8 @@ JOB_NAME="VirtualBox_macOS"
 EXTRA_ARGS="--bootstrapper=kubeadm"
 PARALLEL_COUNT=3
 
+install cron/cleanup_and_reboot_Darwin.sh $HOME/cleanup_and_reboot.sh
+crontab < cron/Darwin.crontab
+
 # Download files and set permissions
 source common.sh