91 lines
4.0 KiB
Bash
91 lines
4.0 KiB
Bash
#!/bin/sh
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
# Packages to install into the image we're creating. This is a deliberately
|
|
# minimalist set, providing only the packages necessary to bootstrap further
|
|
# package installation as specified via EC2 user-data.
|
|
export VM_EXTRA_PACKAGES="ec2-scripts firstboot-freebsd-update firstboot-pkgs dual-dhclient"
|
|
|
|
# Set to a list of third-party software to enable in rc.conf(5).
|
|
export VM_RC_LIST="ec2_configinit ec2_fetchkey ec2_ephemeralswap ec2_loghostkey firstboot_freebsd_update firstboot_pkgs"
|
|
|
|
# Build with a 1.5 GB UFS partition; the growfs rc.d script will expand
|
|
# the partition to fill the root disk after the EC2 instance is launched.
|
|
# Note that if this is set to <N>G, we will end up with an <N+1> GB disk
|
|
# image since VMSIZE is the size of the UFS partition, not the disk which
|
|
# it resides within.
|
|
export VMSIZE=1536M
|
|
|
|
# No swap space; the ec2_ephemeralswap rc.d script will allocate swap
|
|
# space on EC2 ephemeral disks. (If they exist -- the T2 low-cost instances
|
|
# and the C4 compute-optimized instances don't have ephemeral disks. But
|
|
# it would be silly to bloat the image and increase costs for every instance
|
|
# just for those two families, especially since instances ranging in size
|
|
# from 1 GB of RAM to 60 GB of RAM would need different sizes of swap space
|
|
# anyway.)
|
|
export NOSWAP=YES
|
|
|
|
vm_extra_pre_umount() {
|
|
# The firstboot_pkgs rc.d script will download the repository
|
|
# catalogue and install or update pkg when the instance first
|
|
# launches, so these files would just be replaced anyway; removing
|
|
# them from the image allows it to boot faster.
|
|
env ASSUME_ALWAYS_YES=yes pkg -c ${DESTDIR} delete -f -y pkg
|
|
rm ${DESTDIR}/var/db/pkg/repo-*.sqlite
|
|
|
|
# The size of the EC2 root disk can be configured at instance launch
|
|
# time; expand our filesystem to fill the disk.
|
|
echo 'growfs_enable="YES"' >> ${DESTDIR}/etc/rc.conf
|
|
|
|
# EC2 instances use DHCP to get their network configuration. IPv6
|
|
# requires accept_rtadv.
|
|
echo 'ifconfig_DEFAULT="SYNCDHCP accept_rtadv"' >> ${DESTDIR}/etc/rc.conf
|
|
|
|
# Unless the system has been configured via EC2 user-data, the user
|
|
# will need to SSH in to do anything.
|
|
echo 'sshd_enable="YES"' >> ${DESTDIR}/etc/rc.conf
|
|
|
|
# The AWS CLI tools are generally useful, and small enough that they
|
|
# will download quickly; but users will often override this setting
|
|
# via EC2 user-data.
|
|
echo 'firstboot_pkgs_list="awscli"' >> ${DESTDIR}/etc/rc.conf
|
|
|
|
# Enable IPv6 on all interfaces, and use DHCP on both IPv4 and IPv6.
|
|
echo 'ipv6_activate_all_interfaces="YES"' >> ${DESTDIR}/etc/rc.conf
|
|
echo 'dhclient_program="/usr/local/sbin/dual-dhclient"' >> ${DESTDIR}/etc/rc.conf
|
|
|
|
# The EC2 console is output-only, so while printing a backtrace can
|
|
# be useful, there's no point dropping into a debugger or waiting
|
|
# for a keypress.
|
|
echo 'debug.trace_on_panic=1' >> ${DESTDIR}/etc/sysctl.conf
|
|
echo 'debug.debugger_on_panic=0' >> ${DESTDIR}/etc/sysctl.conf
|
|
echo 'kern.panic_reboot_wait_time=0' >> ${DESTDIR}/etc/sysctl.conf
|
|
|
|
# The console is not interactive, so we might as well boot quickly.
|
|
echo 'autoboot_delay="-1"' >> ${DESTDIR}/boot/loader.conf
|
|
echo 'beastie_disable="YES"' >> ${DESTDIR}/boot/loader.conf
|
|
|
|
# EC2 has two consoles: An emulated serial port ("system log"),
|
|
# which has been present since 2006; and a VGA console ("instance
|
|
# screenshot") which was introduced in 2016.
|
|
echo 'boot_multicons="YES"' >> ${DESTDIR}/boot/loader.conf
|
|
|
|
# Some older EC2 hardware used a version of Xen with a bug in its
|
|
# emulated serial port. It is not clear if EC2 still has any such
|
|
# nodes, but apply the workaround just in case.
|
|
echo 'hw.broken_txfifo="1"' >> ${DESTDIR}/boot/loader.conf
|
|
|
|
# The first time the AMI boots, the installed "first boot" scripts
|
|
# should be allowed to run:
|
|
# * ec2_configinit (download and process EC2 user-data)
|
|
# * ec2_fetchkey (arrange for SSH using the EC2-provided public key)
|
|
# * growfs (expand the filesystem to fill the provided disk)
|
|
# * firstboot_freebsd_update (install critical updates)
|
|
# * firstboot_pkgs (install packages)
|
|
touch ${DESTDIR}/firstboot
|
|
|
|
return 0
|
|
}
|