Creating a Script To Run at First Boot

Near the top of the SMF service manifest shown in Creating an SMF Manifest File, the service is enabled by the following line:

<create_default_instance enabled='true' />

At the end of your first-boot script, disable the service and uninstall the package so that the first-boot script runs only one time.

#!/bin/sh

svcadm disable svc:/site/first-boot-script-svc:default
pkg uninstall pkg:/first-boot-script

exit $SMF_EXIT_OK

In this example, first-boot-script-svc is the SMF service created in Creating an SMF Manifest File, and first-boot-script is the IPS package created in Creating an IPS Package For the Script and Service.

Example 13-1 Sample First-Boot Script

This example shows a sample first-boot script named /opt/site/first-boot-script.sh. This script first saves a copy of the boot environment (BE) that was just created by the AI installation. Saving a copy of the BE before the first-boot script modifies it enables you to easily recover from any problems introduced by the script by booting into the saved BE.

#!/bin/sh

# Load SMF shell support definitions
. /lib/svc/share/smf_include.sh

echo "Save original boot environment first."
# Obtain the active BE name from beadm: The active BE on reboot has an R in
# the third column of 'beadm list' output. Its name is in column one.
bename=`beadm list -Hd|nawk -F ';' '$3 ~ /R/ {print $1}'`
beadm create ${bename}.orig

# Add support for faster serial console
echo "Setting up support for faster serial console"
! grep console115200 >/dev/null /etc/ttydefs && \
    echo "console115200:115200 hupcl opost onlcr:115200::console115200" \
    >>/etc/ttydefs

echo "Configure ssh server for root login and X11 forwarding"
ed - << EOF
r /etc/ssh/sshd_config
/PermitRootLogin/
c
PermitRootLogin yes
.
/X11Forwarding/
c
X11Forwarding yes
.
w
q
EOF
svcadm refresh ssh

# Set up coreadm
echo "Setting core file configuration"
coreadm -G default -g /var/cores/%f.%u.%p.%t.core
coreadm -e global
coreadm -e process
coreadm -e proc-setid
coreadm -e log

# Disable service and uninstall package
svcadm disable svc:/site/first-boot-script-svc:default
pkg uninstall pkg:/first-boot-script

echo "Site first-boot script done. Rebooting in 5 seconds." > /dev/console

sleep 5 && reboot -p || reboot &

exit $SMF_EXIT_OK