5b9adb60de
The boot-time script (prepare_guest.sh) is one of the less reliable parts of the install process. This change enables SSH into the host as well as reporting of the IP address. This significantly helps debugging issues now and enables moving of all other setup code to being executed over SSH. Change-Id: I1555f1d91353ba8b75e2de4607df33ee20307a6e
124 lines
3.1 KiB
Bash
Executable File
124 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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# This script is run on an Ubuntu VM.
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# This script is inserted into the VM by prepare_guest_template.sh
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# and is run when that VM boots.
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# It customizes a fresh Ubuntu install, so it is ready
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# to run stack.sh
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#
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# This includes installing the XenServer tools,
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# creating the user called "stack",
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# and shuts down the VM to signal the script has completed
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set -o errexit
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set -o nounset
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set -o xtrace
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# Configurable nuggets
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GUEST_PASSWORD="$1"
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STACK_USER="$2"
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DOMZERO_USER="$3"
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function setup_domzero_user {
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local username
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username="$1"
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local key_updater_script
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local sudoers_file
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key_updater_script="/home/$username/update_authorized_keys.sh"
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sudoers_file="/etc/sudoers.d/allow_$username"
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# Create user
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adduser --disabled-password --quiet "$username" --gecos "$username"
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# Give passwordless sudo
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cat > $sudoers_file << EOF
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$username ALL = NOPASSWD: ALL
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EOF
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chmod 0440 $sudoers_file
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# A script to populate this user's authenticated_keys from xenstore
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cat > $key_updater_script << EOF
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#!/bin/bash
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set -eux
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DOMID=\$(sudo xenstore-read domid)
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sudo xenstore-exists /local/domain/\$DOMID/authorized_keys/$username
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sudo xenstore-read /local/domain/\$DOMID/authorized_keys/$username > /home/$username/xenstore_value
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cat /home/$username/xenstore_value > /home/$username/.ssh/authorized_keys
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EOF
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# Give the key updater to the user
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chown $username:$username $key_updater_script
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chmod 0700 $key_updater_script
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# Setup the .ssh folder
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mkdir -p /home/$username/.ssh
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chown $username:$username /home/$username/.ssh
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chmod 0700 /home/$username/.ssh
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touch /home/$username/.ssh/authorized_keys
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chown $username:$username /home/$username/.ssh/authorized_keys
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chmod 0600 /home/$username/.ssh/authorized_keys
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# Setup the key updater as a cron job
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crontab -u $username - << EOF
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* * * * * $key_updater_script
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EOF
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}
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# Make a small cracklib dictionary, so that passwd still works, but we don't
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# have the big dictionary.
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mkdir -p /usr/share/cracklib
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echo a | cracklib-packer
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# Make /etc/shadow, and set the root password
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pwconv
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echo "root:$GUEST_PASSWORD" | chpasswd
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# Put the VPX into UTC.
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rm -f /etc/localtime
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# Add stack user
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groupadd libvirtd
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useradd $STACK_USER -s /bin/bash -d /opt/stack -G libvirtd
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echo $STACK_USER:$GUEST_PASSWORD | chpasswd
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echo "$STACK_USER ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
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setup_domzero_user "$DOMZERO_USER"
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# Add an udev rule, so that new block devices could be written by stack user
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cat > /etc/udev/rules.d/50-openstack-blockdev.rules << EOF
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KERNEL=="xvd[b-z]", GROUP="$STACK_USER", MODE="0660"
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EOF
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# Give ownership of /opt/stack to stack user
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chown -R $STACK_USER /opt/stack
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function setup_vimrc {
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if [ ! -e $1 ]; then
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# Simple but usable vimrc
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cat > $1 <<EOF
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se ts=4
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se expandtab
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se shiftwidth=4
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EOF
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fi
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}
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# Setup simple .vimrcs
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setup_vimrc /root/.vimrc
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setup_vimrc /opt/stack/.vimrc
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# remove self from local.rc
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# so this script is not run again
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rm -rf /etc/rc.local
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# Restore rc.local file
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cp /etc/rc.local.preparebackup /etc/rc.local
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# shutdown to notify we are done
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shutdown -h now
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