+# make sure we don't require tty for sudo operations
+cat <<EOF >/etc/sudoers.d/89-jenkins-user-defaults
+Defaults:jenkins !requiretty
+jenkins ALL = NOPASSWD: ALL
+EOF
+
+# Add 'hostname' into /etc/hosts during node spinup time to avoid sudo returning
+# an 'unable to resolve host' message or some Java API's returning an unknown
+# host exception. The workaround on adding "myhostname" into /etc/nss-switch.conf
+# does not work on Ubuntu flavours.
+sed -i "/127.0.0.1/s/$/\t$(hostname)/" /etc/hosts
+