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run.sh
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#!/bin/bash
/systpl/systpl.jinja.py /systpl/my.cnf.tmpl > /etc/mysql/my.cnf
/systpl/systpl.jinja.py /systpl/make-backup.sh.tmpl > /make-backup.sh
chmod 755 /make-backup.sh
####
VOLUME_HOME="/vol/database/`hostname`-mysql"
VOLUME_TMP="/vol/database/`hostname`-mysql-tmp"
CONF_FILE="/etc/mysql/my.cnf"
LOG="/vol/logs/`hostname`-mysql-error.log"
# Set permission of config file
chmod 644 ${CONF_FILE}
chmod 644 /etc/mysql/conf.d/mysqld_charset.cnf
StartMySQL ()
{
/usr/bin/mysqld_safe > /dev/null 2>&1 &
# Time out in 1 minute
LOOP_LIMIT=13
for (( i=0 ; ; i++ )); do
if [ ${i} -eq ${LOOP_LIMIT} ]; then
echo "Time out. Error log is shown as below:"
tail -n 100 ${LOG}
exit 1
fi
echo "=> Waiting for confirmation of MySQL service startup, trying ${i}/${LOOP_LIMIT} ..."
sleep 5
mysql -uroot -e "status" > /dev/null 2>&1 && break
done
}
CreateMySQLUser()
{
StartMySQL
if [ "$VAR_MYSQL_PASS" = "**Random**" ]; then
unset VAR_MYSQL_PASS
fi
export VAR_MYSQL_PASS=${VAR_MYSQL_PASS:-$(pwgen -s 12 1)}
_word=$( [ ${VAR_MYSQL_PASS} ] && echo "preset" || echo "random" )
echo "=> Creating MySQL user ${VAR_MYSQL_USER} with ${_word} password"
mysql -uroot -e "CREATE USER '${VAR_MYSQL_USER}'@'%' IDENTIFIED BY '$VAR_MYSQL_PASS'"
mysql -uroot -e "GRANT ALL PRIVILEGES ON *.* TO '${VAR_MYSQL_USER}'@'%' WITH GRANT OPTION"
echo "=> Done!"
echo "========================================================================"
echo "You can now connect to this MySQL Server using:"
echo ""
echo " mysql -u$VAR_MYSQL_USER -p$VAR_MYSQL_PASS -h<host> -P<port>"
echo ""
echo "Please remember to change the above password as soon as possible!"
echo "MySQL user 'root' has no password but only allows local connections"
echo "========================================================================"
mysqladmin -uroot shutdown
}
if [[ ! -d $VOLUME_TMP ]]; then
echo "=> Creating MySQL TMP in $VOLUME_TMP"
mkdir -p $VOLUME_TMP
chown heap:root $VOLUME_TMP
echo "=> Done!"
fi
if [[ ! -d $VOLUME_HOME ]]; then
echo "=> An empty or uninitialized MySQL volume is detected in $VOLUME_HOME"
echo "=> Installing MySQL ..."
if [ ! -f /usr/share/mysql/my-default.cnf ] ; then
cp /etc/mysql/my.cnf /usr/share/mysql/my-default.cnf
fi
mysql_install_db > /dev/null 2>&1
echo "=> Done!"
echo "=> Creating admin user ..."
CreateMySQLUser
else
echo "=> Using an existing volume of MySQL"
fi
# Set MySQL REPLICATION - MASTER
if [ -n "${VAR_MYSQL_REPLICATION_MASTER}" ]; then
echo "=> Configuring MySQL replication as master ..."
if [ ! -f ${VOLUME_HOME}/.master.configured ]; then
echo "=> Starting MySQL ..."
StartMySQL
echo "=> Creating a log user ${VAR_MYSQL_REPLICATION_USER}:${VAR_MYSQL_REPLICATION_PASSWORD}"
mysql -uroot -e "CREATE USER '${VAR_MYSQL_REPLICATION_USER}'@'%' IDENTIFIED BY '${VAR_MYSQL_REPLICATION_PASSWORD}'"
mysql -uroot -e "GRANT REPLICATION SLAVE ON *.* TO '${VAR_MYSQL_REPLICATION_USER}'@'%'"
echo "=> Done!"
mysqladmin -uroot shutdown
touch ${VOLUME_HOME}/.master.configured
else
echo "=> MySQL replication master already configured, skipping."
fi
fi
# Set MySQL REPLICATION - SLAVE
if [ -n "${VAR_MYSQL_REPLICATION_SLAVE}" ]; then
echo "=> Configuring MySQL replication as slave ..."
if [ -n "${VAR_MYSQL_REPLICATION_HOST}" ] && [ -n "${VAR_MYSQL_REPLICATION_PORT}" ]; then
if [ ! -f ${VOLUME_HOME}/.slave.configured ]; then
echo "=> Starting MySQL ..."
StartMySQL
echo "=> Setting master connection info on slave"
mysql -uroot -e "STOP SLAVE"
mysql -uroot -e "CHANGE MASTER TO MASTER_HOST='${VAR_MYSQL_REPLICATION_HOST}',MASTER_USER='${VAR_MYSQL_REPLICATION_USER}',MASTER_PASSWORD='${VAR_MYSQL_REPLICATION_PASSWORD}',MASTER_PORT=${VAR_MYSQL_REPLICATION_PORT}, MASTER_CONNECT_RETRY=30"
echo "=> Done!"
mysqladmin -uroot shutdown
touch ${VOLUME_HOME}/.slave.configured
else
echo "=> MySQL replicaiton slave already configured, skipping."
fi
else
echo "=> Cannot configure slave, please link it to another MySQL container with alias as 'mysql'"
exit 1
fi
fi
exec /usr/sbin/mysqld