Merge "add: packer template for debian-9 installation"

[infra.git] / packer / debian-9 / scripts / 99-cleanup.sh

diff --git a/packer/debian-9/scripts/99-cleanup.sh b/packer/debian-9/scripts/99-cleanup.sh
new file mode 100755 (executable)
index 0000000..4c4070d
--- /dev/null
+++ b/packer/debian-9/scripts/99-cleanup.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+export DEBIAN_FRONTEND=noninteractive
+
+# Finally, cleanup all the things
+apt-get install --yes deborphan # Let's try to remove some more
+apt-get autoremove \
+  $(deborphan) \
+  deborphan \
+  dictionaries-common \
+  iamerican \
+  ibritish \
+  localepurge \
+  task-english \
+  tasksel \
+  tasksel-data \
+  --purge --yes
+
+# Remove downloaded .deb files
+apt-get clean
+
+# Remove instance-specific files: we want this image to be as "impersonal" as
+# possible.
+find \
+  /var/cache/apt \
+  /var/lib/apt \
+  /var/lib/dhcp \
+  /var/log \
+  -mindepth 1 -print -delete
+
+rm -vf \
+  /etc/network/interfaces.d/50-cloud-init.cfg \
+  /etc/adjtime \
+  /etc/hostname \
+  /etc/hosts \
+  /etc/ssh/*key* \
+  /var/cache/ldconfig/aux-cache \
+  /var/lib/systemd/random-seed \
+  ~/.bash_history \
+  "${SUDO_USER}/.bash_history"
+
+# From https://www.freedesktop.org/software/systemd/man/machine-id.html:
+# For operating system images which are created once and used on multiple
+# machines, [...] /etc/machine-id should be an empty file in the generic file
+# system image.
+truncate -s 0 /etc/machine-id
+
+# Recreate some useful files.
+touch /var/log/lastlog
+chown root:utmp /var/log/lastlog
+chmod 664 /var/log/lastlog
+
+
+# Free all unused storage block. This makes the final image smaller.
+fstrim --all --verbose