Adding final ESXI deployment code

ESXi/Packer/scripts/update.sh

@@ -0,0 +1,40 @@
+#!/bin/sh -eux
+export DEBIAN_FRONTEND=noninteractive
+
+ubuntu_version="`lsb_release -r | awk '{print $2}'`";
+major_version="`echo $ubuntu_version | awk -F. '{print $1}'`";
+
+# Disable release-upgrades
+sed -i.bak 's/^Prompt=.*$/Prompt=never/' /etc/update-manager/release-upgrades;
+
+# Disable systemd apt timers/services
+if [ "$major_version" -ge "16" ]; then
+  systemctl stop apt-daily.timer;
+  systemctl stop apt-daily-upgrade.timer;
+  systemctl disable apt-daily.timer;
+  systemctl disable apt-daily-upgrade.timer;
+  systemctl mask apt-daily.service;
+  systemctl mask apt-daily-upgrade.service;
+  systemctl daemon-reload;
+fi
+
+# Disable periodic activities of apt to be safe
+cat <<EOF >/etc/apt/apt.conf.d/10periodic;
+APT::Periodic::Enable "0";
+APT::Periodic::Update-Package-Lists "0";
+APT::Periodic::Download-Upgradeable-Packages "0";
+APT::Periodic::AutocleanInterval "0";
+APT::Periodic::Unattended-Upgrade "0";
+EOF
+
+# Clean and nuke the package from orbit
+rm -rf /var/log/unattended-upgrades;
+apt-get -y purge unattended-upgrades;
+
+# Update the package list
+apt-get -y update;
+
+# Upgrade all installed packages incl. kernel and kernel headers
+apt-get -y dist-upgrade -o Dpkg::Options::="--force-confnew";
+
+reboot