d15c8a0824
As we are moving forward to test XenAPI in the gate, it is necessary to
move dom0 related modifications to be performed from domU. For this
purpose, a new user is created, and that user should be used to talk to
dom0 from domU. This change creates that user, makes it possible for
dom0 to log in to domU with that account, and configure that account to
be able to talk down to dom0.
Also move several steps to the nova xenserver plugin:
- dom0 plugin installation
- create kernels and images directory
- install console rotate script
- configure a cron to execute console rotate script
Configuration changes:
A new configuration option, DOMZERO_USER has been created, that
specifies a user account that is configured to be able to do
passwordless ssh to dom0.
Change-Id: If9de0b297a67b7cdb5de78d8dd0e8b2ca578b601
137 lines
3.5 KiB
Bash
Executable File
137 lines
3.5 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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XS_TOOLS_PATH="$2"
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STACK_USER="$3"
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DOMZERO_USER="$4"
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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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# Install basics
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apt-get update
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apt-get install -y cracklib-runtime curl wget ssh openssh-server tcpdump ethtool
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apt-get install -y curl wget ssh openssh-server python-pip git vim-nox sudo python-netaddr
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pip install xenapi
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# Install XenServer guest utilities
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dpkg -i $XS_TOOLS_PATH
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update-rc.d -f xe-linux-distribution remove
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update-rc.d xe-linux-distribution defaults
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# Make a small cracklib dictionary, so that passwd still works, but we don't
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# have the big dictionary.
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mkdir -p /usr/share/cracklib
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echo a | cracklib-packer
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# Make /etc/shadow, and set the root password
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pwconv
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echo "root:$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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syntax on
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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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