replication-helper/start-replication.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 "Stop local slave" > $log_file
mysql --defaults-extra-file=./.my.cnf -e "STOP SLAVE;"

#Started line on execute remote sql on remote server
echo "Start execution all commands on remote server" >> $log_file

REMOTE_SQL=

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

REMOTE_SQL=$REMOTE_SQL' system ./_activate-slave.sh;'

REMOTE_SQL=$REMOTE_SQL' system ./_dump.sh;'

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

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

echo "Start local slave" >> $log_file

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

if [[ "$1" = "master-to-master" ]]; then
    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;"
fi