101 lines
2.8 KiB
Bash
101 lines
2.8 KiB
Bash
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#!/bin/sh
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# Script to install MySQL and lsync replication on master and slave host.
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# It's part of Evocluster project.
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set -e
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LOGFILE=~/log/evocluster.log
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error() {
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echo -n "$(date +"%b %d %T") " >>$LOGFILE
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echo "ERROR: $1" |tee -a $LOGFILE >&2
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}
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info() {
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echo -n "$(date +"%b %d %T") " >>$LOGFILE
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echo "INFO: $1" |tee -a $LOGFILE
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}
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if [ $# -ne 1 ] && ([ $1 != 'master' ] || [ $1 != 'slave']); then
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error 'You must specify one argument: master or slave'
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exit 2
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fi
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if [ $1 = 'master' ]; then
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# **
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# Warning: script supposes the database to configure is empty and stay
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# empty during all the configuration process.
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# **
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# Change MySQL configuration
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sed -i 's/^bind-address\t.*$/#&/' /etc/mysql/my.cnf
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sed -i 's/^#\(server-id\t.*\)$/\1/' /etc/mysql/my.cnf
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sed -i 's/^#\(log_bin\t.*\)$/\1/' /etc/mysql/my.cnf
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/etc/init.d/mysql restart # a voir...
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# Create repl user if it doesn't exist
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pass=$(apg -c /dev/urandom -n1 -E \&\\\/\"\')
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if [ -z "$(mysql -e "SELECT user FROM mysql.user WHERE user='repl'")" ]
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then
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mysql -e "GRANT REPLICATION SLAVE ON *.* to repl@'%' IDENTIFIED BY
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'$pass'"
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fi
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# lsyncd daemon
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(crontab -l; echo "@reboot lsyncd ~/www slave:www") |crontab -
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# TODO: Monitoring lsyncd a mettre en place
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MASTER_LOG_FILE=$(mysql -Ne "SHOW MASTER STATUS" |cut -f 1)
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MASTER_LOG_POS=$(mysql -Ne "SHOW MASTER STATUS" |cut -f 2)
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if [ -z $MASTER_LOG_FILE ] || [ -z $MASTER_LOG_POS ]; then
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error 'MASTER_LOG_FILE or MASTER_LOG_POS are not set, bin-log seem not
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working correctly.'
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fi
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# Return some MySQL information
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# (required to configure slave)
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echo "MASTER_PASSWORD=$pass"
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echo "MASTER_LOG_FILE=$MASTER_LOG_FILE"
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echo "MASTER_LOG_POS=$MASTER_LOG_POS"
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else
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# Source stding
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# doesn't POSIX compatible :'(
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#. <(grep -E '^MASTER_(HOST|DATABASE|PASSWORD|LOG_FILE|LOG_POS)=')
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tmpfile=$(mktemp)
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grep -E '^MASTER_(HOST|DATABASE|PASSWORD|LOG_FILE|LOG_POS)=' >$tmpfile
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. $tmpfile
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rm $tmpfile
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# Change MySQL configuration
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sed -i 's/^#(server-id\t.*)\d$/\12/' /etc/mysql/my.cnf
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if grep -q '^replicate-do-db' /etc/mysql/my.cnf; then
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sed -i "/^replicate-do-db\t.*/&, $MASTER_DATABASE"
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else
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sed -i "/^#binlog_ignore_db/a replicate-do-db = $MASTER_DATABASE"
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fi
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/etc/init.d/mysql restart # a voir...
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# Start replication
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mysql -e "CHANGE MASTER TO
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MASTER_HOST='$MASTER_HOST',
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MASTER_USER='repl',
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MASTER_PASSWORD='$MASTER_PASSWORD',
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MASTER_LOG_FILE='$MASTER_LOG_FILE',
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MASTER_LOG_POS=$MASTER_LOG_FILE"
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mysql -e "START SLAVE"
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sleep 2
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mysql -Ne "SHOW SLAVE STATUS"
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# TODO: Add nagios check
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# info a retourner :
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# - show slave status pour etre sur que la replication a demarre
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fi
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