replication-helper/replication-master-to-master.sh

#!/bin/bash
export DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
CONFIG_FILE=$DIR/config.sh
[[ ! -r "${CONFIG_FILE}" ]] && { echo "Could not read ${CONFIG_FILE}!"; exit 1; }
set -a
. "${CONFIG_FILE}"
set +a

echo "Started activation of master-to-master replication" >> $log_file

echo "Stop remote slave" >> $log_file
mysql --defaults-extra-file=./.remote.my.cnf -e "STOP SLAVE;"

echo "Execute command on local server with push local binlog position to remote server" >> $log_file

LOCAL_SQL=

for i in ${databases[@]}
do
    LOCAL_SQL=LOCAL_SQL' USE '$i'; FLUSH TABLES WITH READ LOCK;'
done

LOCAL_SQL=LOCAL_SQL' system ./_activate-master-to-master.sh;'

for i in ${databases[@]}
do
    LOCAL_SQL=LOCAL_SQL' USE '$i'; UNLOCK TABLES;'
done

mysql --defaults-extra-file=./.my.cnf -e "$REMOTE_SQL"

echo "Start remote slave" >> $log_file

mysql --defaults-extra-file=./.remote.my.cnf -e "START SLAVE;"