81 lines
2.7 KiB
Bash
Executable File
81 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright 2013 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved.
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#
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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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set -eux
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set -o pipefail
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DISTRO=`lsb_release -si`
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# Quietly go away unless a migration has been asked for
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DEFAULTS=/etc/mysql/migration_default
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[ -e $DEFAULTS ] || exit 0
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source $DEFAULTS
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DONE_FILE=/etc/mysql/migration_done
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if [ -e $DONE_FILE ] ; then
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echo migration from [$MIGRATION_HOST] already completed.
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ls -l $DONE_FILE
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exit 0
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fi
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# MySQL may be stopped pre-configuration, so try to start it
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if [ -d /etc/init ] && [ "$DISTRO" = "Ubuntu" ] ; then
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# Upstart: During initial boot, mysql will start in parallel with os-refresh-config
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# wait-for-state is a job that allows blocking until a particular state is reached.
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start wait-for-state WAIT_FOR=mysql WAITER=$(basename $0) WAIT_FOREVER=Y TARGET_GOAL=start WAIT_STATE=running
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else
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service mysql start || service mysqld start || :
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fi
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local_mysql() {
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if [ -e /root/.my.cnf ] ; then
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mysql --defaults-extra-file=/root/.my.cnf "$@"
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else
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mysql "$@"
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fi
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}
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local_mysql -e 'SHOW GRANTS'
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# This runs as root. We assume root has a .my.cnf or access
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# via localhost.
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if [ -n "$MIGRATION_HOST" ] ; then
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local_mysql -e 'STOP SLAVE' || :
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# If we are planning on setting up a full slave
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SLAVE_OPTS=""
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if [ -n "$MIGRATION_USER" ] && [ -n "$MIGRATION_PASSWORD" ] ; then
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local_mysql -e "CHANGE MASTER TO master_host='${MIGRATION_HOST}', master_user='${MIGRATION_USER}', master_password='${MIGRATION_PASSWORD}'"
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SLAVE_OPTS="--master-data"
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fi
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mysqldump --defaults-extra-file=/root/metadata.my.cnf \
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-u $MIGRATION_DUMP_USER \
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--single-transaction \
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--all-databases \
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$SLAVE_OPTS -h $MIGRATION_HOST | local_mysql
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# After this following command, our ~/.my.cnf may stop working as its
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# password may change due to the dump loaded above.
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local_mysql -e 'FLUSH PRIVILEGES'
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# Now that database has been loaded, use creds that should match
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cp -f /root/metadata.my.cnf /root/.my.cnf
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# Now get the slave going if creds were provided
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if [ -n "$MIGRATION_USER" ] && [ -n "$MIGRATION_PASSWORD" ] ; then
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local_mysql -e "START SLAVE"
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fi
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touch $DONE_FILE
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fi
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