Package db migration scripts in placement pypi dist
Having the db migration scripts within the openstack-placement pypi
distribution is desirable for deployment tools, such as
openstack-ansible. It provides a known good location for the script,
available with a pip install.
There are several ways to distribute files with a python package. The
method used here was chosen because it works both with tarballs and
wheels (the files are already in the tarball, as a result of the way pbr
works, but not in the wheel).
Here's what's done:
* The db migrate scripts are put in their own direcory,
placement_db_tools, so that only they are packaged, not the other
tools.
* To preserve how grenade interacts with these files as well as not
disrupt the docs, symlinks from tools to placement_db_tools have been
created.
* placement_db_tools is added to the list of packages included in the
openstack-placement distro. This means that when 'pip install
openstack-placement' happens, the python environment will then include
placement and placement_db_tools directories.
The end result is that the true path to the script can be found with:
pkg_resources.resource_filename('placement_db_tools', 'mysql-migrate-db.sh')
This has been noted in the to-stein.rst document.
A different package was chosen to not muddy the waters of what is
"actually placement".
Similarly, the 'data_files' functionality provided by pbr was not used,
because that requires the file be written to a location on the local
filesystem, relative to the install prefix. Dirtying the filesystem
outside the python lib with this sort of thing is inappropriate.
Change-Id: Ie326ce8a2a0692d20793bc18be606e034fa94a44
Story: 2005535
Task: 30671
This commit is contained in:
Chris Dent
Matt Riedemann
parent
6137a69cbc
commit
c62ed6ccba
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@ -62,6 +62,13 @@ There are database migrations scripts in the placement code repository which
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may be used to copy the data or as models for your own tooling:
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`mysql-migrate-db.sh`_ and `postgresql-migrate-db.sh`_.
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.. note:: Starting in the Train release, these migration scripts are also
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packaged with the `openstack-placement`_ package on PyPI. Their
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filenames may be discovered using ``pkg_resources`` to look in the
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``placement_db_tools`` package::
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pkg_resources.resource_filename('placement_db_tools', 'mysql-migrate-db.sh')
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For best results run the database migration on your database host. If you are
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unable to do this, you will need to take some additional steps below.
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@ -0,0 +1,21 @@
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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This package provides a way to distribute useful database management tools as
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part of the Python package of the placement service: openstack-placement.
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Their filenames may be discovered using ``pkg_resources`` to look in the
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``placement_db_tools`` package:
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pkg_resources.resource_filename('placement_db_tools',
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'mysql-migrate-db.sh')
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"""
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@ -0,0 +1,301 @@
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#!/bin/bash
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# This script will attempt to migrate your nova-api placement data to
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# a new placement database. Run it with --help for usage, and --mkconfig
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# to write a template config file to use.
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# Defaults we can guess
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DEFAULT_MIGRATE_TABLES="allocations placement_aggregates consumers inventories projects "
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DEFAULT_MIGRATE_TABLES+="resource_classes resource_provider_aggregates resource_provider_traits "
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DEFAULT_MIGRATE_TABLES+="resource_providers traits users "
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MIGRATE_TABLES=${MIGRATE_TABLES:-$DEFAULT_MIGRATE_TABLES}
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PLACEMENT_DB_HOST=${PLACEMENT_DB_HOST:-localhost}
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PLACEMENT_DB=${PLACEMENT_DB:-placement}
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NOVA_API_DB_HOST=${NOVA_API_DB_HOST:-localhost}
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NOVA_API_DB=${NOVA_API_DB:-nova_api}
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TMPDIR=${TMPDIR:-/tmp}
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LAST_MYSQL_ERR=${TMPDIR}/migrate-mysql-db.err
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INITIAL_PLACEMENT_DB_VERSION=${INITIAL_DB_VERSION:-b4ed3a175331}
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ME=$(basename "$0")
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declare -a ARGS
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declare -a OPTS
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function getflag() {
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# Return true if --$flag is present on the command line
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# Usage: getflag help -> 0
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local flag="$1"
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for opt in ${OPTS[*]}; do
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if [ "$opt" == "--${flag}" ]; then
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return 0
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fi
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done
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return 1
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}
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function parse_argv() {
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# Parse command line arguments into positional arguments and
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# option flags. Store each in $ARGS, $OPTS.
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# Usage: parse_argv $*
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for item in $*; do
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if echo $item | grep -q -- '^--'; then
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OPTS+=($item)
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else
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ARGS+=($item)
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fi
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done
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}
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function db_var() {
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# Return an attribute of database config based on the symbolic
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# name
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# Usage: db_var PLACEMENT USER -> $PLACEMENT_USER
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local db="$1"
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local var="$2"
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eval echo "\$${db}_${var}"
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}
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function mysql_command() {
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# Run a mysql command with the usual connection information taken
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# from a symbolic configuration name
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# Usage: mysql_command PLACEMENT [command] [args..] -> stdout
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local whichdb="$1"
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shift
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local command=mysql
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if [ "$2" ]; then
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command=${1:-mysql}
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shift
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fi
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local db=$(db_var $whichdb DB)
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local host=$(db_var $whichdb DB_HOST)
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local user=$(db_var $whichdb USER)
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local pass=$(db_var $whichdb PASS)
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if [ "$command" = "mysql" ]; then
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command="mysql --skip-column-names"
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fi
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$command -h$host -u$user -p$pass $db $* 2>$LAST_MYSQL_ERR
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}
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function show_error() {
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# Prints the last error (if present) and removes the temporary
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# file
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if [ -f $LAST_MYSQL_ERR ]; then
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cat $LAST_MYSQL_ERR
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rm -f $LAST_MYSQL_ERR
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fi
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}
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function check_db() {
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# Check a DB to see if it's missing, present, filled with data
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# Returns 0 if it is present with data, 1 if present but no data
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# or 2 if not present (or unable to connect)
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# Usage: check_db PLACEMENT -> 0
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local whichdb="$1"
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local inv
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local inv_count
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if ! echo "SELECT DATABASE()" | mysql_command $whichdb >/dev/null 2>&1; then
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echo "Failed to connect to $whichdb database"
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show_error
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return 2
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fi
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inv=$(echo "SELECT COUNT(id) FROM inventories" |
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mysql_command $whichdb)
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if [ $? -ne 0 ]; then
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# No schema
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return 1
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fi
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inv_count=$(echo $inv | tail -n1)
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if [ $inv_count -gt 0 ]; then
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# Data found
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return 0
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else
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# No data found, but schema intact
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return 1
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fi
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}
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function check_cli() {
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# Returns 0 if placement cli is installed and configured,
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# 1 if it is not installed, or 2 if the access to the
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# placement database fails
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# Usage: check_cli -> 0
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placement-manage --version > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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# placement not installed
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return 1
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fi
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placement-manage db version > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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# DB connection fails
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return 2
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fi
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}
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function migrate_data() {
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# Actually migrate data from a source to destination symbolic
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# database. Returns 1 if failure, 0 otherwise.
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# Usage: migrate_data NOVA_API PLACEMENT -> 0
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local source="$1"
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local dest="$2"
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local tmpdir=$(mktemp -d migrate-db.XXXXXXXX)
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local tmpfile="${tmpdir}/from-nova.sql"
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echo "Dumping from $source to $tmpfile"
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mysql_command $source mysqldump $MIGRATE_TABLES > $tmpfile || {
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echo 'Failed to dump source database:'
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show_error
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return 1
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}
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echo "Loading to $dest from $tmpfile"
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mysql_command $dest < $tmpfile || {
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echo 'Failed to load destination database:'
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show_error
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return 1
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}
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}
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function sanity_check_env() {
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# Check that we have everything we need to examine the situation
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# and potentially do the migration. Loads values from the rcfile,
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# if present. Returns 1 if a config was not found, 2 if that
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# config is incomplete or 0 if everything is good.
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# Usage: sanity_check_env $rcfile -> 0
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RCFILE="${1:-migrate-db.rc}"
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if [ "$RCFILE" = '-' ]; then
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# Don't require a file and assume everything is already
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# set in the environment
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true
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elif [ ! -f "$RCFILE" ]; then
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echo -n 'ERROR: Specify an RC file on the command line or create '
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echo 'migrate-db.rc in the current directory'
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echo
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show_help
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else
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source $RCFILE
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fi
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required="NOVA_API_DB NOVA_API_USER NOVA_API_PASS PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS"
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for var in $required; do
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value=$(eval echo "\$$var")
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if [ -z "$value" ]; then
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echo "A value for $var was not provided but is required"
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return 2
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fi
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done
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}
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function make_config() {
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# Create or update a config file with defaults we know. Either use
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# the default migrate-db.rc or the file specified on the command
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# line.
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RCFILE="${1:-migrate-db.rc}"
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if [ -f "$RCFILE" ]; then
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source $RCFILE
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fi
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vars="NOVA_API_DB NOVA_API_USER NOVA_API_PASS NOVA_API_DB_HOST "
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vars+="PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS PLACEMENT_DB_HOST "
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vars+="MIGRATE_TABLES"
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(for var in $vars; do
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val=$(eval echo "\$$var")
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echo "${var}=\"$val\""
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done) > $RCFILE
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echo Wrote $(readlink -f $RCFILE)
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}
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function show_help() {
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echo "Usage: $ME [flags] [rcfile]"
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echo
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echo "Flags:"
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echo " --help: this text"
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echo " --migrate: actually do data migration"
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echo " --mkconfig: write/update config to \$rcfile"
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echo
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echo "Pass '-' as \$rcfile if all config values are set in"
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echo "the environment."
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echo
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echo "Exit codes:"
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echo " 0: Success"
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echo " 1: Usage error"
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echo " 2: Configuration missing or incomplete"
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echo " 3: Migration already completed"
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echo " 4: No data to migrate from nova (new deployment)"
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echo " 5: Unable to connect to one or both databases"
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echo " 6: Unable to execute placement's CLI commands"
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exit 0
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}
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parse_argv $*
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if getflag help; then
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show_help
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fi
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if getflag mkconfig; then
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make_config $ARGS
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exit 0
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fi
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#
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# Actual migration logic starts here
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#
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# Sanity check that we have what we need or bail
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sanity_check_env $ARGS || exit $?
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# Check the state of each database we care about
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check_db NOVA_API
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nova_present=$?
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check_db PLACEMENT
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placement_present=$?
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check_cli
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placement_cli=$?
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# Try to come up with a good reason to refuse to migrate
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if [ $nova_present -eq 0 -a $placement_present -eq 0 ]; then
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echo "Migration has already completed. The placement database appears to have data."
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exit 3
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elif [ $nova_present -eq 1 ]; then
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echo "No data present in nova database - nothing to migrate (new deployment?)"
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exit 4
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elif [ $nova_present -eq 2 ]; then
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echo "Unable to proceed without connection to nova database"
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exit 5
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elif [ $placement_present -eq 2 ]; then
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echo "Unable to proceed without connection to placement database"
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exit 5
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elif [ $placement_cli -eq 1 ]; then
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echo "Unable to proceed without placement installed"
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exit 6
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elif [ $placement_cli -eq 2 ]; then
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echo "The 'placement-manage db version' command fails"
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echo "Is placement.conf configured to access the new database?"
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exit 6
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fi
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# If we get here, we expect to be able to migrate. Require them to opt into
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# actual migration before we do anything.
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echo Nova database contains data, placement database does not. Okay to proceed with migration
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if getflag migrate $*; then
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migrate_data NOVA_API PLACEMENT
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placement-manage db stamp $INITIAL_PLACEMENT_DB_VERSION
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else
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echo "To actually migrate, run me with --migrate"
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fi
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rm -f $LAST_MYSQL_ERR
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@ -0,0 +1,287 @@
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#!/bin/bash
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# This script will attempt to migrate your nova-api placement data to
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# a new placement database. Run it with --help for usage, and --mkconfig
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# to write a template config file to use.
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# Defaults we can guess
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DEFAULT_MIGRATE_TABLES="allocations placement_aggregates consumers inventories projects "
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DEFAULT_MIGRATE_TABLES+="resource_classes resource_provider_aggregates resource_provider_traits "
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DEFAULT_MIGRATE_TABLES+="resource_providers traits users "
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MIGRATE_TABLES=${MIGRATE_TABLES:-$DEFAULT_MIGRATE_TABLES}
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PG_MIGRATE_TABLES=${MIGRATE_TABLES// /|}}
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PLACEMENT_DB_HOST=${PLACEMENT_DB_HOST:-localhost}
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PLACEMENT_DB=${PLACEMENT_DB:-placement}
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NOVA_API_DB_HOST=${NOVA_API_DB_HOST:-localhost}
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NOVA_API_DB=${NOVA_API_DB:-nova_api}
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TMPDIR=${TMPDIR:-/tmp}
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LAST_PSQL_ERR=${TMPDIR}/migrate-psql-db.err
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INITIAL_PLACEMENT_DB_VERSION=${INITIAL_DB_VERSION:-b4ed3a175331}
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declare -a ARGS
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declare -a OPTS
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function getflag() {
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# Return true if --$flag is present on the command line
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# Usage: getflag help -> 0
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local flag="$1"
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for opt in ${OPTS[*]}; do
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if [ "$opt" == "--${flag}" ]; then
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return 0
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fi
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done
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return 1
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}
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function parse_argv() {
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# Parse command line arguments into positional arguments and
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# option flags. Store each in $ARGS, $OPTS.
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# Usage: parse_argv $*
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for item in $*; do
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if echo $item | grep -q -- '^--'; then
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OPTS+=($item)
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else
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ARGS+=($item)
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fi
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done
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}
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function db_var() {
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# Return an attribute of database config based on the symbolic
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# name
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# Usage: db_var PLACEMENT USER -> $PLACEMENT_USER
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local db="$1"
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local var="$2"
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eval echo "\$${db}_${var}"
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}
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function psql_command() {
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# Run a psql command with the usual connection information taken
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# from a symbolic configuration name
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# Usage: psql_command PLACEMENT [command] [args..] -> stdout
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local whichdb="$1"
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shift
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local command=psql
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if [ "$2" ]; then
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command=${1:-psql}
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shift
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fi
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local db=$(db_var $whichdb DB)
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local host=$(db_var $whichdb DB_HOST)
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local user=$(db_var $whichdb USER)
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local pass=$(db_var $whichdb PASS)
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if [ "$command" = "psql" ]; then
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command="psql -t"
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fi
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PGPASSWORD=$pass $command -h$host -U$user $db $* 2>$LAST_PSQL_ERR
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}
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function check_db() {
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# Check a DB to see if it's missing, present, filled with data
|
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# Returns 0 if it is present with data, 1 if present but no data
|
||||
# or 2 if not present (or unable to connect)
|
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# Usage: check_db PLACEMENT -> 0
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local whichdb="$1"
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local inv
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local inv_count
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local error_found
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if ! echo "SELECT CURRENT_DATABASE()" | psql_command $whichdb >/dev/null 2>&1; then
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echo "Failed to connect to $whichdb database"
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return 2
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fi
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||||
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||||
inv=$(echo "SELECT COUNT(id) FROM inventories" |
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psql_command $whichdb)
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if [ $? -ne 0 ]; then
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# No DB
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||||
return 1
|
||||
fi
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||||
|
||||
error_found=$(cat $LAST_PSQL_ERR | grep ERROR)
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||||
if [ $? -eq 0 ]; then
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||||
# No schema
|
||||
return 1
|
||||
fi
|
||||
|
||||
inv_count=$(echo $inv | tail -n1)
|
||||
if [ $inv_count -gt 0 ]; then
|
||||
# Data found
|
||||
return 0
|
||||
else
|
||||
# No data found, but schema intact
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
function check_cli() {
|
||||
# Returns 0 if placement cli is installed and configured,
|
||||
# 1 if it is not installed, or 2 if the access to the
|
||||
# placement database fails
|
||||
# Usage: check_cli -> 0
|
||||
placement-manage --version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# placement not installed
|
||||
return 1
|
||||
fi
|
||||
|
||||
placement-manage db version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# DB connection fails
|
||||
return 2
|
||||
fi
|
||||
}
|
||||
|
||||
function migrate_data() {
|
||||
# Actually migrate data from a source to destination symbolic
|
||||
# database. Returns 1 if failure, 0 otherwise.
|
||||
# Usage: migrate_data NOVA_API PLACEMENT -> 0
|
||||
local source="$1"
|
||||
local dest="$2"
|
||||
local tmpdir=$(mktemp -d migrate-db.XXXXXXXX)
|
||||
local tmpfile="${tmpdir}/from-nova.sql"
|
||||
|
||||
echo "Dumping from $source to $tmpfile"
|
||||
psql_command $source pg_dump -t $PG_MIGRATE_TABLES > $tmpfile || {
|
||||
echo 'Failed to dump source database:'
|
||||
cat $LAST_PSQL_ERR
|
||||
return 1
|
||||
}
|
||||
echo "Loading to $dest from $tmpfile"
|
||||
# There is some output when loading file, so we redirect it to /dev/null.
|
||||
psql_command $dest < $tmpfile >/dev/null || {
|
||||
echo 'Failed to load destination database:'
|
||||
cat $LAST_PSQL_ERR
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
function sanity_check_env() {
|
||||
# Check that we have everything we need to examine the situation
|
||||
# and potentially do the migration. Loads values from the rcfile,
|
||||
# if present. Returns 1 if a config was not found, 2 if that
|
||||
# config is incomplete or 0 if everything is good.
|
||||
# Usage: sanity_check_env $rcfile -> 0
|
||||
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ ! -f "$RCFILE" ]; then
|
||||
echo 'Specify an RC file on the command line or create migrate-db.rc in the current directory'
|
||||
return 1
|
||||
fi
|
||||
|
||||
source $RCFILE
|
||||
|
||||
required="NOVA_API_DB NOVA_API_USER NOVA_API_PASS PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS"
|
||||
for var in $required; do
|
||||
value=$(eval echo "\$$var")
|
||||
if [ -z "$value" ]; then
|
||||
echo "A value for $var was not provided but is required"
|
||||
return 2
|
||||
fi
|
||||
done
|
||||
|
||||
}
|
||||
|
||||
function make_config() {
|
||||
# Create or update a config file with defaults we know. Either use
|
||||
# the default migrate-db.rc or the file specified on the command
|
||||
# line.
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ -f "$RCFILE" ]; then
|
||||
source $RCFILE
|
||||
fi
|
||||
|
||||
vars="NOVA_API_DB NOVA_API_USER NOVA_API_PASS NOVA_API_DB_HOST "
|
||||
vars+="PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS PLACEMENT_DB_HOST "
|
||||
vars+="MIGRATE_TABLES"
|
||||
|
||||
(for var in $vars; do
|
||||
val=$(eval echo "\$$var")
|
||||
echo "${var}=\"$val\""
|
||||
done) > $RCFILE
|
||||
|
||||
echo Wrote $(readlink -f $RCFILE)
|
||||
}
|
||||
|
||||
parse_argv $*
|
||||
|
||||
if getflag help; then
|
||||
echo "Usage: $0 [flags] [rcfile]"
|
||||
echo
|
||||
echo "Flags:"
|
||||
echo " --help: this text"
|
||||
echo " --migrate: actually do data migration"
|
||||
echo " --mkconfig: write/update config to \$rcfile"
|
||||
echo
|
||||
echo "Exit codes:"
|
||||
echo " 0: Success"
|
||||
echo " 1: Usage error"
|
||||
echo " 2: Configuration missing or incomplete"
|
||||
echo " 3: Migration already completed"
|
||||
echo " 4: No data to migrate from nova (new deployment)"
|
||||
echo " 5: Unable to connect to one or both databases"
|
||||
echo " 6: Unable to execute placement's CLI commands"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if getflag mkconfig; then
|
||||
make_config $ARGS
|
||||
exit 0
|
||||
fi
|
||||
|
||||
#
|
||||
# Actual migration logic starts here
|
||||
#
|
||||
|
||||
# Sanity check that we have what we need or bail
|
||||
sanity_check_env $ARGS || exit $?
|
||||
|
||||
# Check the state of each database we care about
|
||||
check_db NOVA_API
|
||||
nova_present=$?
|
||||
check_db PLACEMENT
|
||||
placement_present=$?
|
||||
check_cli
|
||||
placement_cli=$?
|
||||
|
||||
# Try to come up with a good reason to refuse to migrate
|
||||
if [ $nova_present -eq 0 -a $placement_present -eq 0 ]; then
|
||||
echo "Migration has already completed. The placement database appears to have data."
|
||||
exit 3
|
||||
elif [ $nova_present -eq 1 ]; then
|
||||
echo "No data present in nova database - nothing to migrate (new deployment?)"
|
||||
exit 4
|
||||
elif [ $nova_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to nova database"
|
||||
exit 5
|
||||
elif [ $placement_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to placement database"
|
||||
exit 5
|
||||
elif [ $placement_cli -eq 1 ]; then
|
||||
echo "Unable to proceed without placement installed"
|
||||
exit 6
|
||||
elif [ $placement_cli -eq 2 ]; then
|
||||
echo "The 'placement-manage db version' command fails"
|
||||
echo "Is placement.conf configured to access the new database?"
|
||||
exit 6
|
||||
fi
|
||||
|
||||
# If we get here, we expect to be able to migrate. Require them to opt into
|
||||
# actual migration before we do anything.
|
||||
|
||||
echo Nova database contains data, placement database does not. Okay to proceed with migration
|
||||
|
||||
if getflag migrate $*; then
|
||||
migrate_data NOVA_API PLACEMENT
|
||||
placement-manage db stamp $INITIAL_PLACEMENT_DB_VERSION
|
||||
else
|
||||
echo "To actually migrate, run me with --migrate"
|
||||
fi
|
||||
|
||||
rm -f $LAST_PSQL_ERR
|
||||
|
|
@ -25,6 +25,7 @@ setup-hooks =
|
|||
[files]
|
||||
packages =
|
||||
placement
|
||||
placement_db_tools
|
||||
|
||||
[entry_points]
|
||||
oslo.config.opts =
|
||||
|
|
|
|||
|
|
@ -1,301 +0,0 @@
|
|||
#!/bin/bash
|
||||
|
||||
# This script will attempt to migrate your nova-api placement data to
|
||||
# a new placement database. Run it with --help for usage, and --mkconfig
|
||||
# to write a template config file to use.
|
||||
|
||||
# Defaults we can guess
|
||||
DEFAULT_MIGRATE_TABLES="allocations placement_aggregates consumers inventories projects "
|
||||
DEFAULT_MIGRATE_TABLES+="resource_classes resource_provider_aggregates resource_provider_traits "
|
||||
DEFAULT_MIGRATE_TABLES+="resource_providers traits users "
|
||||
MIGRATE_TABLES=${MIGRATE_TABLES:-$DEFAULT_MIGRATE_TABLES}
|
||||
PLACEMENT_DB_HOST=${PLACEMENT_DB_HOST:-localhost}
|
||||
PLACEMENT_DB=${PLACEMENT_DB:-placement}
|
||||
NOVA_API_DB_HOST=${NOVA_API_DB_HOST:-localhost}
|
||||
NOVA_API_DB=${NOVA_API_DB:-nova_api}
|
||||
TMPDIR=${TMPDIR:-/tmp}
|
||||
LAST_MYSQL_ERR=${TMPDIR}/migrate-mysql-db.err
|
||||
INITIAL_PLACEMENT_DB_VERSION=${INITIAL_DB_VERSION:-b4ed3a175331}
|
||||
ME=$(basename "$0")
|
||||
|
||||
declare -a ARGS
|
||||
declare -a OPTS
|
||||
|
||||
function getflag() {
|
||||
# Return true if --$flag is present on the command line
|
||||
# Usage: getflag help -> 0
|
||||
local flag="$1"
|
||||
for opt in ${OPTS[*]}; do
|
||||
if [ "$opt" == "--${flag}" ]; then
|
||||
return 0
|
||||
fi
|
||||
done
|
||||
return 1
|
||||
}
|
||||
|
||||
function parse_argv() {
|
||||
# Parse command line arguments into positional arguments and
|
||||
# option flags. Store each in $ARGS, $OPTS.
|
||||
# Usage: parse_argv $*
|
||||
for item in $*; do
|
||||
if echo $item | grep -q -- '^--'; then
|
||||
OPTS+=($item)
|
||||
else
|
||||
ARGS+=($item)
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
function db_var() {
|
||||
# Return an attribute of database config based on the symbolic
|
||||
# name
|
||||
# Usage: db_var PLACEMENT USER -> $PLACEMENT_USER
|
||||
local db="$1"
|
||||
local var="$2"
|
||||
|
||||
eval echo "\$${db}_${var}"
|
||||
}
|
||||
|
||||
function mysql_command() {
|
||||
# Run a mysql command with the usual connection information taken
|
||||
# from a symbolic configuration name
|
||||
# Usage: mysql_command PLACEMENT [command] [args..] -> stdout
|
||||
local whichdb="$1"
|
||||
shift
|
||||
local command=mysql
|
||||
if [ "$2" ]; then
|
||||
command=${1:-mysql}
|
||||
shift
|
||||
fi
|
||||
local db=$(db_var $whichdb DB)
|
||||
local host=$(db_var $whichdb DB_HOST)
|
||||
local user=$(db_var $whichdb USER)
|
||||
local pass=$(db_var $whichdb PASS)
|
||||
|
||||
if [ "$command" = "mysql" ]; then
|
||||
command="mysql --skip-column-names"
|
||||
fi
|
||||
|
||||
$command -h$host -u$user -p$pass $db $* 2>$LAST_MYSQL_ERR
|
||||
}
|
||||
|
||||
function show_error() {
|
||||
# Prints the last error (if present) and removes the temporary
|
||||
# file
|
||||
if [ -f $LAST_MYSQL_ERR ]; then
|
||||
cat $LAST_MYSQL_ERR
|
||||
rm -f $LAST_MYSQL_ERR
|
||||
fi
|
||||
}
|
||||
|
||||
function check_db() {
|
||||
# Check a DB to see if it's missing, present, filled with data
|
||||
# Returns 0 if it is present with data, 1 if present but no data
|
||||
# or 2 if not present (or unable to connect)
|
||||
# Usage: check_db PLACEMENT -> 0
|
||||
local whichdb="$1"
|
||||
|
||||
local inv
|
||||
local inv_count
|
||||
|
||||
if ! echo "SELECT DATABASE()" | mysql_command $whichdb >/dev/null 2>&1; then
|
||||
echo "Failed to connect to $whichdb database"
|
||||
show_error
|
||||
return 2
|
||||
fi
|
||||
|
||||
inv=$(echo "SELECT COUNT(id) FROM inventories" |
|
||||
mysql_command $whichdb)
|
||||
if [ $? -ne 0 ]; then
|
||||
# No schema
|
||||
return 1
|
||||
fi
|
||||
|
||||
inv_count=$(echo $inv | tail -n1)
|
||||
if [ $inv_count -gt 0 ]; then
|
||||
# Data found
|
||||
return 0
|
||||
else
|
||||
# No data found, but schema intact
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
function check_cli() {
|
||||
# Returns 0 if placement cli is installed and configured,
|
||||
# 1 if it is not installed, or 2 if the access to the
|
||||
# placement database fails
|
||||
# Usage: check_cli -> 0
|
||||
placement-manage --version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# placement not installed
|
||||
return 1
|
||||
fi
|
||||
|
||||
placement-manage db version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# DB connection fails
|
||||
return 2
|
||||
fi
|
||||
}
|
||||
|
||||
function migrate_data() {
|
||||
# Actually migrate data from a source to destination symbolic
|
||||
# database. Returns 1 if failure, 0 otherwise.
|
||||
# Usage: migrate_data NOVA_API PLACEMENT -> 0
|
||||
local source="$1"
|
||||
local dest="$2"
|
||||
local tmpdir=$(mktemp -d migrate-db.XXXXXXXX)
|
||||
local tmpfile="${tmpdir}/from-nova.sql"
|
||||
|
||||
echo "Dumping from $source to $tmpfile"
|
||||
mysql_command $source mysqldump $MIGRATE_TABLES > $tmpfile || {
|
||||
echo 'Failed to dump source database:'
|
||||
show_error
|
||||
return 1
|
||||
}
|
||||
echo "Loading to $dest from $tmpfile"
|
||||
mysql_command $dest < $tmpfile || {
|
||||
echo 'Failed to load destination database:'
|
||||
show_error
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
function sanity_check_env() {
|
||||
# Check that we have everything we need to examine the situation
|
||||
# and potentially do the migration. Loads values from the rcfile,
|
||||
# if present. Returns 1 if a config was not found, 2 if that
|
||||
# config is incomplete or 0 if everything is good.
|
||||
# Usage: sanity_check_env $rcfile -> 0
|
||||
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ "$RCFILE" = '-' ]; then
|
||||
# Don't require a file and assume everything is already
|
||||
# set in the environment
|
||||
true
|
||||
elif [ ! -f "$RCFILE" ]; then
|
||||
echo -n 'ERROR: Specify an RC file on the command line or create '
|
||||
echo 'migrate-db.rc in the current directory'
|
||||
echo
|
||||
show_help
|
||||
else
|
||||
source $RCFILE
|
||||
fi
|
||||
|
||||
required="NOVA_API_DB NOVA_API_USER NOVA_API_PASS PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS"
|
||||
for var in $required; do
|
||||
value=$(eval echo "\$$var")
|
||||
if [ -z "$value" ]; then
|
||||
echo "A value for $var was not provided but is required"
|
||||
return 2
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
function make_config() {
|
||||
# Create or update a config file with defaults we know. Either use
|
||||
# the default migrate-db.rc or the file specified on the command
|
||||
# line.
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ -f "$RCFILE" ]; then
|
||||
source $RCFILE
|
||||
fi
|
||||
|
||||
vars="NOVA_API_DB NOVA_API_USER NOVA_API_PASS NOVA_API_DB_HOST "
|
||||
vars+="PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS PLACEMENT_DB_HOST "
|
||||
vars+="MIGRATE_TABLES"
|
||||
|
||||
(for var in $vars; do
|
||||
val=$(eval echo "\$$var")
|
||||
echo "${var}=\"$val\""
|
||||
done) > $RCFILE
|
||||
|
||||
echo Wrote $(readlink -f $RCFILE)
|
||||
}
|
||||
|
||||
function show_help() {
|
||||
echo "Usage: $ME [flags] [rcfile]"
|
||||
echo
|
||||
echo "Flags:"
|
||||
echo " --help: this text"
|
||||
echo " --migrate: actually do data migration"
|
||||
echo " --mkconfig: write/update config to \$rcfile"
|
||||
echo
|
||||
echo "Pass '-' as \$rcfile if all config values are set in"
|
||||
echo "the environment."
|
||||
echo
|
||||
echo "Exit codes:"
|
||||
echo " 0: Success"
|
||||
echo " 1: Usage error"
|
||||
echo " 2: Configuration missing or incomplete"
|
||||
echo " 3: Migration already completed"
|
||||
echo " 4: No data to migrate from nova (new deployment)"
|
||||
echo " 5: Unable to connect to one or both databases"
|
||||
echo " 6: Unable to execute placement's CLI commands"
|
||||
exit 0
|
||||
}
|
||||
|
||||
parse_argv $*
|
||||
|
||||
if getflag help; then
|
||||
show_help
|
||||
fi
|
||||
|
||||
if getflag mkconfig; then
|
||||
make_config $ARGS
|
||||
exit 0
|
||||
fi
|
||||
|
||||
#
|
||||
# Actual migration logic starts here
|
||||
#
|
||||
|
||||
# Sanity check that we have what we need or bail
|
||||
sanity_check_env $ARGS || exit $?
|
||||
|
||||
# Check the state of each database we care about
|
||||
check_db NOVA_API
|
||||
nova_present=$?
|
||||
check_db PLACEMENT
|
||||
placement_present=$?
|
||||
check_cli
|
||||
placement_cli=$?
|
||||
|
||||
# Try to come up with a good reason to refuse to migrate
|
||||
if [ $nova_present -eq 0 -a $placement_present -eq 0 ]; then
|
||||
echo "Migration has already completed. The placement database appears to have data."
|
||||
exit 3
|
||||
elif [ $nova_present -eq 1 ]; then
|
||||
echo "No data present in nova database - nothing to migrate (new deployment?)"
|
||||
exit 4
|
||||
elif [ $nova_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to nova database"
|
||||
exit 5
|
||||
elif [ $placement_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to placement database"
|
||||
exit 5
|
||||
elif [ $placement_cli -eq 1 ]; then
|
||||
echo "Unable to proceed without placement installed"
|
||||
exit 6
|
||||
elif [ $placement_cli -eq 2 ]; then
|
||||
echo "The 'placement-manage db version' command fails"
|
||||
echo "Is placement.conf configured to access the new database?"
|
||||
exit 6
|
||||
fi
|
||||
|
||||
# If we get here, we expect to be able to migrate. Require them to opt into
|
||||
# actual migration before we do anything.
|
||||
|
||||
echo Nova database contains data, placement database does not. Okay to proceed with migration
|
||||
|
||||
if getflag migrate $*; then
|
||||
migrate_data NOVA_API PLACEMENT
|
||||
placement-manage db stamp $INITIAL_PLACEMENT_DB_VERSION
|
||||
else
|
||||
echo "To actually migrate, run me with --migrate"
|
||||
fi
|
||||
|
||||
rm -f $LAST_MYSQL_ERR
|
||||
|
|
@ -0,0 +1 @@
|
|||
../placement_db_tools/mysql-migrate-db.sh
|
||||
|
|
@ -1,287 +0,0 @@
|
|||
#!/bin/bash
|
||||
|
||||
# This script will attempt to migrate your nova-api placement data to
|
||||
# a new placement database. Run it with --help for usage, and --mkconfig
|
||||
# to write a template config file to use.
|
||||
|
||||
# Defaults we can guess
|
||||
DEFAULT_MIGRATE_TABLES="allocations placement_aggregates consumers inventories projects "
|
||||
DEFAULT_MIGRATE_TABLES+="resource_classes resource_provider_aggregates resource_provider_traits "
|
||||
DEFAULT_MIGRATE_TABLES+="resource_providers traits users "
|
||||
MIGRATE_TABLES=${MIGRATE_TABLES:-$DEFAULT_MIGRATE_TABLES}
|
||||
PG_MIGRATE_TABLES=${MIGRATE_TABLES// /|}}
|
||||
PLACEMENT_DB_HOST=${PLACEMENT_DB_HOST:-localhost}
|
||||
PLACEMENT_DB=${PLACEMENT_DB:-placement}
|
||||
NOVA_API_DB_HOST=${NOVA_API_DB_HOST:-localhost}
|
||||
NOVA_API_DB=${NOVA_API_DB:-nova_api}
|
||||
TMPDIR=${TMPDIR:-/tmp}
|
||||
LAST_PSQL_ERR=${TMPDIR}/migrate-psql-db.err
|
||||
INITIAL_PLACEMENT_DB_VERSION=${INITIAL_DB_VERSION:-b4ed3a175331}
|
||||
|
||||
declare -a ARGS
|
||||
declare -a OPTS
|
||||
|
||||
function getflag() {
|
||||
# Return true if --$flag is present on the command line
|
||||
# Usage: getflag help -> 0
|
||||
local flag="$1"
|
||||
for opt in ${OPTS[*]}; do
|
||||
if [ "$opt" == "--${flag}" ]; then
|
||||
return 0
|
||||
fi
|
||||
done
|
||||
return 1
|
||||
}
|
||||
|
||||
function parse_argv() {
|
||||
# Parse command line arguments into positional arguments and
|
||||
# option flags. Store each in $ARGS, $OPTS.
|
||||
# Usage: parse_argv $*
|
||||
for item in $*; do
|
||||
if echo $item | grep -q -- '^--'; then
|
||||
OPTS+=($item)
|
||||
else
|
||||
ARGS+=($item)
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
function db_var() {
|
||||
# Return an attribute of database config based on the symbolic
|
||||
# name
|
||||
# Usage: db_var PLACEMENT USER -> $PLACEMENT_USER
|
||||
local db="$1"
|
||||
local var="$2"
|
||||
|
||||
eval echo "\$${db}_${var}"
|
||||
}
|
||||
|
||||
function psql_command() {
|
||||
# Run a psql command with the usual connection information taken
|
||||
# from a symbolic configuration name
|
||||
# Usage: psql_command PLACEMENT [command] [args..] -> stdout
|
||||
local whichdb="$1"
|
||||
shift
|
||||
local command=psql
|
||||
if [ "$2" ]; then
|
||||
command=${1:-psql}
|
||||
shift
|
||||
fi
|
||||
local db=$(db_var $whichdb DB)
|
||||
local host=$(db_var $whichdb DB_HOST)
|
||||
local user=$(db_var $whichdb USER)
|
||||
local pass=$(db_var $whichdb PASS)
|
||||
|
||||
if [ "$command" = "psql" ]; then
|
||||
command="psql -t"
|
||||
fi
|
||||
|
||||
PGPASSWORD=$pass $command -h$host -U$user $db $* 2>$LAST_PSQL_ERR
|
||||
}
|
||||
|
||||
function check_db() {
|
||||
# Check a DB to see if it's missing, present, filled with data
|
||||
# Returns 0 if it is present with data, 1 if present but no data
|
||||
# or 2 if not present (or unable to connect)
|
||||
# Usage: check_db PLACEMENT -> 0
|
||||
local whichdb="$1"
|
||||
|
||||
local inv
|
||||
local inv_count
|
||||
local error_found
|
||||
|
||||
if ! echo "SELECT CURRENT_DATABASE()" | psql_command $whichdb >/dev/null 2>&1; then
|
||||
echo "Failed to connect to $whichdb database"
|
||||
return 2
|
||||
fi
|
||||
|
||||
inv=$(echo "SELECT COUNT(id) FROM inventories" |
|
||||
psql_command $whichdb)
|
||||
if [ $? -ne 0 ]; then
|
||||
# No DB
|
||||
return 1
|
||||
fi
|
||||
|
||||
error_found=$(cat $LAST_PSQL_ERR | grep ERROR)
|
||||
if [ $? -eq 0 ]; then
|
||||
# No schema
|
||||
return 1
|
||||
fi
|
||||
|
||||
inv_count=$(echo $inv | tail -n1)
|
||||
if [ $inv_count -gt 0 ]; then
|
||||
# Data found
|
||||
return 0
|
||||
else
|
||||
# No data found, but schema intact
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
function check_cli() {
|
||||
# Returns 0 if placement cli is installed and configured,
|
||||
# 1 if it is not installed, or 2 if the access to the
|
||||
# placement database fails
|
||||
# Usage: check_cli -> 0
|
||||
placement-manage --version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# placement not installed
|
||||
return 1
|
||||
fi
|
||||
|
||||
placement-manage db version > /dev/null 2>&1
|
||||
|
||||
if [ $? -ne 0 ]; then
|
||||
# DB connection fails
|
||||
return 2
|
||||
fi
|
||||
}
|
||||
|
||||
function migrate_data() {
|
||||
# Actually migrate data from a source to destination symbolic
|
||||
# database. Returns 1 if failure, 0 otherwise.
|
||||
# Usage: migrate_data NOVA_API PLACEMENT -> 0
|
||||
local source="$1"
|
||||
local dest="$2"
|
||||
local tmpdir=$(mktemp -d migrate-db.XXXXXXXX)
|
||||
local tmpfile="${tmpdir}/from-nova.sql"
|
||||
|
||||
echo "Dumping from $source to $tmpfile"
|
||||
psql_command $source pg_dump -t $PG_MIGRATE_TABLES > $tmpfile || {
|
||||
echo 'Failed to dump source database:'
|
||||
cat $LAST_PSQL_ERR
|
||||
return 1
|
||||
}
|
||||
echo "Loading to $dest from $tmpfile"
|
||||
# There is some output when loading file, so we redirect it to /dev/null.
|
||||
psql_command $dest < $tmpfile >/dev/null || {
|
||||
echo 'Failed to load destination database:'
|
||||
cat $LAST_PSQL_ERR
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
function sanity_check_env() {
|
||||
# Check that we have everything we need to examine the situation
|
||||
# and potentially do the migration. Loads values from the rcfile,
|
||||
# if present. Returns 1 if a config was not found, 2 if that
|
||||
# config is incomplete or 0 if everything is good.
|
||||
# Usage: sanity_check_env $rcfile -> 0
|
||||
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ ! -f "$RCFILE" ]; then
|
||||
echo 'Specify an RC file on the command line or create migrate-db.rc in the current directory'
|
||||
return 1
|
||||
fi
|
||||
|
||||
source $RCFILE
|
||||
|
||||
required="NOVA_API_DB NOVA_API_USER NOVA_API_PASS PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS"
|
||||
for var in $required; do
|
||||
value=$(eval echo "\$$var")
|
||||
if [ -z "$value" ]; then
|
||||
echo "A value for $var was not provided but is required"
|
||||
return 2
|
||||
fi
|
||||
done
|
||||
|
||||
}
|
||||
|
||||
function make_config() {
|
||||
# Create or update a config file with defaults we know. Either use
|
||||
# the default migrate-db.rc or the file specified on the command
|
||||
# line.
|
||||
RCFILE="${1:-migrate-db.rc}"
|
||||
if [ -f "$RCFILE" ]; then
|
||||
source $RCFILE
|
||||
fi
|
||||
|
||||
vars="NOVA_API_DB NOVA_API_USER NOVA_API_PASS NOVA_API_DB_HOST "
|
||||
vars+="PLACEMENT_DB PLACEMENT_USER PLACEMENT_PASS PLACEMENT_DB_HOST "
|
||||
vars+="MIGRATE_TABLES"
|
||||
|
||||
(for var in $vars; do
|
||||
val=$(eval echo "\$$var")
|
||||
echo "${var}=\"$val\""
|
||||
done) > $RCFILE
|
||||
|
||||
echo Wrote $(readlink -f $RCFILE)
|
||||
}
|
||||
|
||||
parse_argv $*
|
||||
|
||||
if getflag help; then
|
||||
echo "Usage: $0 [flags] [rcfile]"
|
||||
echo
|
||||
echo "Flags:"
|
||||
echo " --help: this text"
|
||||
echo " --migrate: actually do data migration"
|
||||
echo " --mkconfig: write/update config to \$rcfile"
|
||||
echo
|
||||
echo "Exit codes:"
|
||||
echo " 0: Success"
|
||||
echo " 1: Usage error"
|
||||
echo " 2: Configuration missing or incomplete"
|
||||
echo " 3: Migration already completed"
|
||||
echo " 4: No data to migrate from nova (new deployment)"
|
||||
echo " 5: Unable to connect to one or both databases"
|
||||
echo " 6: Unable to execute placement's CLI commands"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if getflag mkconfig; then
|
||||
make_config $ARGS
|
||||
exit 0
|
||||
fi
|
||||
|
||||
#
|
||||
# Actual migration logic starts here
|
||||
#
|
||||
|
||||
# Sanity check that we have what we need or bail
|
||||
sanity_check_env $ARGS || exit $?
|
||||
|
||||
# Check the state of each database we care about
|
||||
check_db NOVA_API
|
||||
nova_present=$?
|
||||
check_db PLACEMENT
|
||||
placement_present=$?
|
||||
check_cli
|
||||
placement_cli=$?
|
||||
|
||||
# Try to come up with a good reason to refuse to migrate
|
||||
if [ $nova_present -eq 0 -a $placement_present -eq 0 ]; then
|
||||
echo "Migration has already completed. The placement database appears to have data."
|
||||
exit 3
|
||||
elif [ $nova_present -eq 1 ]; then
|
||||
echo "No data present in nova database - nothing to migrate (new deployment?)"
|
||||
exit 4
|
||||
elif [ $nova_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to nova database"
|
||||
exit 5
|
||||
elif [ $placement_present -eq 2 ]; then
|
||||
echo "Unable to proceed without connection to placement database"
|
||||
exit 5
|
||||
elif [ $placement_cli -eq 1 ]; then
|
||||
echo "Unable to proceed without placement installed"
|
||||
exit 6
|
||||
elif [ $placement_cli -eq 2 ]; then
|
||||
echo "The 'placement-manage db version' command fails"
|
||||
echo "Is placement.conf configured to access the new database?"
|
||||
exit 6
|
||||
fi
|
||||
|
||||
# If we get here, we expect to be able to migrate. Require them to opt into
|
||||
# actual migration before we do anything.
|
||||
|
||||
echo Nova database contains data, placement database does not. Okay to proceed with migration
|
||||
|
||||
if getflag migrate $*; then
|
||||
migrate_data NOVA_API PLACEMENT
|
||||
placement-manage db stamp $INITIAL_PLACEMENT_DB_VERSION
|
||||
else
|
||||
echo "To actually migrate, run me with --migrate"
|
||||
fi
|
||||
|
||||
rm -f $LAST_PSQL_ERR
|
||||
|
|
@ -0,0 +1 @@
|
|||
../placement_db_tools/postgresql-migrate-db.sh
|
||||
Loading…
Reference in New Issue