devstack/lib/databases/mysql
Sean Dague 37421991b4 optional pymysql support
This allows you to specify MYSQL_DRIVER=PyMySQL and get it in the
environment.

Change-Id: Ic9d75266640b7aa6d7efb6e882d3027e81414059
2015-05-20 14:58:50 -07:00

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#!/bin/bash
#
# lib/databases/mysql
# Functions to control the configuration and operation of the **MySQL** database backend
# Dependencies:
#
# - DATABASE_{HOST,USER,PASSWORD} must be defined
# Save trace setting
MY_XTRACE=$(set +o | grep xtrace)
set +o xtrace
MYSQL_DRIVER=${MYSQL_DRIVER:-MySQL-python}
# Force over to pymysql driver by default if we are using it.
if is_service_enabled mysql; then
if [[ "$MYSQL_DRIVER" == "PyMySQL" ]]; then
SQLALCHEMY_DATABASE_DRIVER=${SQLALCHEMY_DATABASE_DRIVER:-"pymysql"}
fi
fi
register_database mysql
# Linux distros, thank you for being incredibly consistent
MYSQL=mysql
if is_fedora && ! is_oraclelinux; then
MYSQL=mariadb
fi
# Functions
# ---------
# Get rid of everything enough to cleanly change database backends
function cleanup_database_mysql {
stop_service $MYSQL
if is_ubuntu; then
# Get ruthless with mysql
apt_get purge -y mysql* mariadb*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql
return
elif is_suse || is_oraclelinux; then
uninstall_package mysql-community-server
sudo rm -rf /var/lib/mysql
elif is_fedora; then
uninstall_package mariadb-server
sudo rm -rf /var/lib/mysql
else
return
fi
}
function recreate_database_mysql {
local db=$1
mysql -u$DATABASE_USER -p$DATABASE_PASSWORD -h$MYSQL_HOST -e "DROP DATABASE IF EXISTS $db;"
mysql -u$DATABASE_USER -p$DATABASE_PASSWORD -h$MYSQL_HOST -e "CREATE DATABASE $db CHARACTER SET utf8;"
}
function configure_database_mysql {
local my_conf mysql slow_log
echo_summary "Configuring and starting MySQL"
if is_ubuntu; then
my_conf=/etc/mysql/my.cnf
mysql=mysql
elif is_suse || is_oraclelinux; then
my_conf=/etc/my.cnf
mysql=mysql
elif is_fedora; then
mysql=mariadb
my_conf=/etc/my.cnf
else
exit_distro_not_supported "mysql configuration"
fi
# Start mysql-server
if is_fedora || is_suse; then
# service is not started by default
start_service $mysql
fi
# Set the root password - only works the first time. For Ubuntu, we already
# did that with debconf before installing the package.
if ! is_ubuntu; then
sudo mysqladmin -u root password $DATABASE_PASSWORD || true
fi
# Update the DB to give user $DATABASE_USER@% full control of the all databases:
sudo mysql -uroot -p$DATABASE_PASSWORD -h127.0.0.1 -e "GRANT ALL PRIVILEGES ON *.* TO '$DATABASE_USER'@'%' identified by '$DATABASE_PASSWORD';"
# Now update ``my.cnf`` for some local needs and restart the mysql service
# Change bind-address from localhost (127.0.0.1) to any (0.0.0.0) and
# set default db type to InnoDB
sudo bash -c "source $TOP_DIR/functions && \
iniset $my_conf mysqld bind-address 0.0.0.0 && \
iniset $my_conf mysqld sql_mode STRICT_ALL_TABLES && \
iniset $my_conf mysqld default-storage-engine InnoDB"
if [[ "$DATABASE_QUERY_LOGGING" == "True" ]]; then
echo_summary "Enabling MySQL query logging"
if is_fedora; then
slow_log=/var/log/mariadb/mariadb-slow.log
else
slow_log=/var/log/mysql/mysql-slow.log
fi
sudo sed -e '/log.slow.queries/d' \
-e '/long.query.time/d' \
-e '/log.queries.not.using.indexes/d' \
-i $my_conf
# Turn on slow query log, log all queries (any query taking longer than
# 0 seconds) and log all non-indexed queries
sudo bash -c "source $TOP_DIR/functions && \
iniset $my_conf mysqld slow-query-log 1 && \
iniset $my_conf mysqld slow-query-log-file $slow_log && \
iniset $my_conf mysqld long-query-time 0 && \
iniset $my_conf mysqld log-queries-not-using-indexes 1"
fi
restart_service $mysql
}
function install_database_mysql {
if is_ubuntu; then
# Seed configuration with mysql password so that apt-get install doesn't
# prompt us for a password upon install.
sudo debconf-set-selections <<MYSQL_PRESEED
mysql-server mysql-server/root_password password $DATABASE_PASSWORD
mysql-server mysql-server/root_password_again password $DATABASE_PASSWORD
mysql-server mysql-server/start_on_boot boolean true
MYSQL_PRESEED
fi
# while ``.my.cnf`` is not needed for OpenStack to function, it is useful
# as it allows you to access the mysql databases via ``mysql nova`` instead
# of having to specify the username/password each time.
if [[ ! -e $HOME/.my.cnf ]]; then
cat <<EOF >$HOME/.my.cnf
[client]
user=$DATABASE_USER
password=$DATABASE_PASSWORD
host=$DATABASE_HOST
EOF
chmod 0600 $HOME/.my.cnf
fi
# Install mysql-server
if is_suse || is_oraclelinux; then
if ! is_package_installed mariadb; then
install_package mysql-community-server
fi
elif is_fedora; then
install_package mariadb-server
elif is_ubuntu; then
install_package mysql-server
else
exit_distro_not_supported "mysql installation"
fi
}
function install_database_python_mysql {
# Install Python client module
pip_install_gr $MYSQL_DRIVER
if [[ "$MYSQL_DRIVER" == "MySQL-python" ]]; then
ADDITIONAL_VENV_PACKAGES+=",MySQL-python"
fi
}
function database_connection_url_mysql {
local db=$1
echo "$BASE_SQL_CONN/$db?charset=utf8"
}
# Restore xtrace
$MY_XTRACE
# Local variables:
# mode: shell-script
# End: