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freedombonee/src/freedombone-utils-database

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#!/bin/bash
#
# .---. . .
# | | |
# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
#
# Freedom in the Cloud
#
# Database functions
#
# License
# =======
#
# Copyright (C) 2014-2018 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# default MariaDB password
MARIADB_PASSWORD=
# Used to indicate whether the backup contains MariaDB databases or not
BACKUP_INCLUDES_DATABASES="no"
function store_original_mariadb_password {
if [ ! -f /root/.mariadboriginal ]; then
echo $'Storing original mariadb password'
ORIGINAL_MARIADB_PASSWORD=$("${PROJECT_NAME}-pass" -u root -a mariadb)
# We can store this in plaintext because it will soon be of historical interest only
echo -n "$ORIGINAL_MARIADB_PASSWORD" > /root/.mariadboriginal
fi
}
function keep_database_running {
if [ ! "$(daemon_is_running mariadb)" ]; then
systemctl start mariadb
fi
}
function remove_backup_database_local {
database_name=$1
sed -i "/# Backup the ${database_name} database/,/# End of ${database_name} database backup/d" /usr/bin/backupdatabases
sed -i "/# Backup ${database_name}/,/# End of backup for ${database_name}/d" /etc/cron.weekly/backupdatabasesweekly
sed -i "/# Backup ${database_name}/,/# End of backup for ${database_name}/d" /etc/cron.monthly/backupdatabasesmonthly
sed -i "/${database_name}/d" /etc/cron.hourly/repair
}
function backup_database_local {
# Makes local backups of databases which can then be automatically rolled
# back if corruption is detected
database_name=$1
backup_databases_script=/usr/bin/backupdatabases
if ! grep -q "# Check database daemon" /usr/bin/backupdatabases; then
{ echo '';
echo '# Check database daemon is running';
echo "if [ ! \$(systemctl is-active mariadb >/dev/null 2>&1 && echo Running) ]; then";
echo ' systemctl start mariadb';
echo 'fi';
echo ''; } >> /usr/bin/backupdatabases
fi
if ! grep -q "# Backup the ${database_name} database" $backup_databases_script; then
{ echo "# Backup the ${database_name} database";
echo "TEMPFILE=/root/${database_name}.sql";
echo "DAILYFILE=/var/backups/${database_name}_daily.sql";
echo "mysqldump --password=\"\$MYSQL_PASSWORD\" ${database_name} > \$TEMPFILE";
echo "FILESIZE=\$(stat -c%s \$TEMPFILE)";
echo "if [ \"\$FILESIZE\" -eq \"0\" ]; then";
echo " if [ -f \$DAILYFILE ]; then";
echo " cp \$DAILYFILE \$TEMPFILE";
echo '';
echo ' # try to restore yesterdays database';
echo " mysql -u root --password=\"\$MYSQL_PASSWORD\" ${database_name} -o < \$DAILYFILE";
echo '';
echo ' # Send a warning email';
echo " echo \"Unable to create a backup of the ${database_name} database. Attempted to restore from yesterdays backup\" | mail -s \"${database_name} backup\" \$EMAIL";
echo ' else';
echo ' # Send a warning email';
echo " echo \"Unable to create a backup of the ${database_name} database.\" | mail -s \"${database_name} backup\" \$EMAIL";
echo ' fi';
echo 'else';
echo " chmod 600 \$TEMPFILE";
echo " mv \$TEMPFILE \$DAILYFILE";
echo '';
echo ' # Make the backup readable only by root';
echo " chmod 600 \$DAILYFILE";
echo 'fi';
echo "# End of ${database_name} database backup"; } >> $backup_databases_script
fi
weekly_backup_script=/etc/cron.weekly/backupdatabasesweekly
if ! grep -q "Backup ${database_name}" ${weekly_backup_script}; then
{ echo "# Backup ${database_name}";
echo "if [ -f /var/backups/${database_name}_weekly.sql ]; then";
echo " cp -f /var/backups/${database_name}_weekly.sql /var/backups/${database_name}_2weekly.sql";
echo 'fi';
echo "if [ -f /var/backups/${database_name}_daily.sql ]; then";
echo " cp -f /var/backups/${database_name}_daily.sql /var/backups/${database_name}_weekly.sql";
echo 'fi';
echo "# End of backup for ${database_name}"; } >> ${weekly_backup_script}
fi
monthly_backup_script=/etc/cron.monthly/backupdatabasesmonthly
if ! grep -q "Backup ${database_name}" ${monthly_backup_script}; then
{ echo "# Backup ${database_name}";
echo "if [ -f /var/backups/${database_name}_monthly.sql ]; then";
echo " cp -f /var/backups/${database_name}_monthly.sql /var/backups/${database_name}_2monthly.sql";
echo 'fi';
echo "if [ -f /var/backups/${database_name}_weekly.sql ]; then";
echo " cp -f /var/backups/${database_name}_weekly.sql /var/backups/${database_name}_monthly.sql";
echo 'fi';
echo "# End of backup for ${database_name}"; } >> ${monthly_backup_script}
fi
if ! grep -q "${database_name}" /etc/cron.hourly/repair; then
echo "${PROJECT_NAME}-repair-database ${database_name}" >> /etc/cron.hourly/repair
# remove legacy stuff
sed -i 's|/usr/bin/repairdatabase redmatrix||g' /etc/cron.hourly/repair
fi
}
function get_mariadb_password {
# migrate from database password file to using the password store
DATABASE_PASSWORD_FILE=/root/dbpass
if [ -f $DATABASE_PASSWORD_FILE ]; then
MARIADB_PASSWORD=$(cat $DATABASE_PASSWORD_FILE)
"${PROJECT_NAME}-pass" -u root -a mariadb -p "$MARIADB_PASSWORD"
stored_password=$("${PROJECT_NAME}-pass" -u root -a mariadb)
if [[ "$stored_password" == "$MARIADB_PASSWORD" ]]; then
shred -zu $DATABASE_PASSWORD_FILE
echo $'MariaDB password moved into password store'
return
fi
fi
MARIADB_PASSWORD=$("${PROJECT_NAME}-pass" -u root -a mariadb)
if [[ "$MARIADB_PASSWORD" == *'failed'* ]]; then
echo $'Could not obtain mariadb password'
exit 835225
fi
}
function mariadb_kill_stone_dead {
systemctl stop mariadb
kill_pid=$(pgrep mysqld_safe | head -n 1)
kill -9 "$kill_pid"
kill_pid=$(pgrep mysqld | head -n 1)
kill -9 "$kill_pid"
kill_pid=$(pgrep mysqld | head -n 1)
kill -9 "$kill_pid"
}
function mariadb_fix_authentication {
# See http://www.pontikis.net/blog/debian-9-stretch-rc3-web-server-setup-php7-mariadb
# https://mariadb.com/kb/en/mariadb/unix_socket-authentication-plugin
remove_watchdog_daemon mariadb
mariadb_kill_stone_dead
mysqld_safe --skip-grant-tables &
sleep 5
mysql -u root --password="$MARIADB_PASSWORD" << EOF
use mysql;
update mysql.user set plugin = '' where User='root';
UPDATE user SET Password=PASSWORD('$MARIADB_PASSWORD') where USER='root';
flush privileges;
EOF
mariadb_kill_stone_dead
sed -i 's| --skip-grant-tables||g' /lib/systemd/system/mariadb.service
systemctl daemon-reload
systemctl start mariadb
add_watchdog_daemon mariadb
}
function mariadb_create_root_user {
run_query mysql "CREATE USER 'root@localhost' IDENTIFIED BY '${MARIADB_PASSWORD}'; flush privileges;"
run_query mysql "update mysql.user set plugin = '' where User='root@localhost'; flush privileges;"
run_query mysql "GRANT ALL PRIVILEGES ON * TO 'root@localhost'; flush privileges;"
}
function install_mariadb {
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
apt-get -yq install software-properties-common debconf-utils
apt-get -yq update
remove_watchdog_daemon mariadb
function_check get_mariadb_password
get_mariadb_password
if [ ! "$MARIADB_PASSWORD" ]; then
if [ -f "$IMAGE_PASSWORD_FILE" ]; then
passfile="$(cat "$IMAGE_PASSWORD_FILE")"
MARIADB_PASSWORD="$(printf "%s" "$passfile")"
else
MARIADB_PASSWORD=$(create_password "${MINIMUM_PASSWORD_LENGTH}")
fi
fi
"${PROJECT_NAME}-pass" -u root -a mariadb -p "$MARIADB_PASSWORD"
debconf-set-selections <<< "mariadb-server mariadb-server/root_password password $MARIADB_PASSWORD"
debconf-set-selections <<< "mariadb-server mariadb-server/root_password_again password $MARIADB_PASSWORD"
apt-get -yq install mariadb-server mariadb-client
apt-get -yq remove --purge apache2-bin*
if [ -d /etc/apache2 ]; then
rm -rf /etc/apache2
echo $'Removed Apache installation after MariaDB install'
fi
if [ ! -d /etc/mysql ]; then
echo $"ERROR: mariadb-server does not appear to have installed. $CHECK_MESSAGE"
exit 54
fi
if [ ! -f /usr/bin/mysql ]; then
echo $"ERROR: mariadb-server does not appear to have installed. $CHECK_MESSAGE"
exit 34672
fi
sed -i 's|ExecStart=/usr/sbin/mysqld|ExecStart=/usr/sbin/mysqld --skip-grant-tables|g' /lib/systemd/system/mariadb.service
systemctl daemon-reload
systemctl restart mariadb
mariadb_fix_authentication
mariadb_create_root_user
mark_completed "${FUNCNAME[0]}"
}
function backup_databases_script_header {
if [ ! -f /usr/bin/backupdatabases ]; then
# daily
{ echo '#!/bin/sh';
echo '';
echo "EMAIL='$MY_EMAIL_ADDRESS'";
echo '';
echo "MYSQL_PASSWORD=\$(${PROJECT_NAME}-pass -u root -a mariadb)";
echo 'umask 0077';
echo '';
echo '# exit if we are backing up to friends servers';
echo "if [ -f $FRIENDS_SERVERS_LIST ]; then";
echo ' exit 1';
echo 'fi'; } > /usr/bin/backupdatabases
chmod 600 /usr/bin/backupdatabases
chmod +x /usr/bin/backupdatabases
{ echo '#!/bin/sh';
echo '/usr/bin/backupdatabases'; } > /etc/cron.daily/backupdatabasesdaily
chmod 600 /etc/cron.daily/backupdatabasesdaily
chmod +x /etc/cron.daily/backupdatabasesdaily
# weekly
{ echo '#!/bin/sh';
echo '';
echo 'umask 0077'; } > /etc/cron.weekly/backupdatabasesweekly
chmod 600 /etc/cron.weekly/backupdatabasesweekly
chmod +x /etc/cron.weekly/backupdatabasesweekly
# monthly
{ echo '#!/bin/sh';
echo '';
echo 'umask 0077'; } > /etc/cron.monthly/backupdatabasesmonthly
chmod 600 /etc/cron.monthly/backupdatabasesmonthly
chmod +x /etc/cron.monthly/backupdatabasesmonthly
fi
}
function repair_databases_script {
if [ -f /etc/cron.hourly/repair ]; then
sed -i "s|/usr/bin/repairdatabase|${PROJECT_NAME}-repair-database|g" /etc/cron.hourly/repair
fi
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
db_pass=$("${PROJECT_NAME}-pass" -u root -p mariadb)
if [[ "$db_pass" == 'Error:'* ]]; then
return
fi
echo '#!/bin/bash' > /etc/cron.hourly/repair
echo '' >> /etc/cron.hourly/repair
chmod 600 /etc/cron.hourly/repair
chmod +x /etc/cron.hourly/repair
mark_completed "${FUNCNAME[0]}"
}
function remove_database {
app_name="$1"
if [ ! -d "$INSTALL_DIR" ]; then
mkdir "$INSTALL_DIR"
fi
echo "drop database ${app_name};
quit" > "$INSTALL_DIR/batch.sql"
chmod 600 "$INSTALL_DIR/batch.sql"
keep_database_running
mysql -u root --password="$MARIADB_PASSWORD" < "$INSTALL_DIR/batch.sql"
shred -zu "$INSTALL_DIR/batch.sql"
}
function initialise_database {
database_name=$1
database_file=$2
keep_database_running
mysql -u root --password="$MARIADB_PASSWORD" -D "$database_name" < "$database_file"
# shellcheck disable=SC2181
if [ ! "$?" = "0" ]; then
exit 62952
fi
}
function run_query {
database_name=$1
database_query=$2
keep_database_running
mysql -u root --password="$MARIADB_PASSWORD" -e "$database_query" "$database_name"
}
function run_query_root {
database_name=$1
database_query=$2
keep_database_running
mysql -e "$database_query" "$database_name"
}
function create_database {
app_name="$1"
app_admin_password="$2"
app_admin_username=$3
if [ ! -d "$INSTALL_DIR" ]; then
mkdir "$INSTALL_DIR"
fi
if [ ! "$app_admin_username" ]; then
app_admin_username="${app_name}admin"
fi
echo "create database ${app_name};
CREATE USER '$app_admin_username@localhost' IDENTIFIED BY '${app_admin_password}';
update mysql.user set plugin = '' where User='$app_admin_username@localhost';
GRANT ALL PRIVILEGES ON ${app_name}.* TO '$app_admin_username@localhost';
flush privileges;
quit" > "$INSTALL_DIR/batch.sql"
chmod 600 "$INSTALL_DIR/batch.sql"
keep_database_running
mysql -u root --password="$MARIADB_PASSWORD" < "$INSTALL_DIR/batch.sql"
shred -zu "$INSTALL_DIR/batch.sql"
}
function run_query_with_output {
database_name=$1
database_query=$2
keep_database_running
output=$(mysql -u root --password="$MARIADB_PASSWORD" << EOF
use $database_name;
$database_query
EOF
)
echo "$output"
}
function drop_database {
database_name="$1"
get_mariadb_password
echo "drop database ${app_name};
flush privileges;
quit" > "$INSTALL_DIR/batch.sql"
chmod 600 "$INSTALL_DIR/batch.sql"
keep_database_running
mysql -u root --password="$MARIADB_PASSWORD" < "$INSTALL_DIR/batch.sql"
shred -zu "$INSTALL_DIR/batch.sql"
}
function database_reinstall {
apt-get -yq purge mariadb*
rm -rf /var/lib/mysql
rm -rf /etc/mysql
sed -i '/mariadb/d' "${HOME}/${PROJECT_NAME}-completed.txt"
install_mariadb
}
function install_rethinkdb {
if [[ "$(arch)" == "arm"* ]]; then
echo $'rethinkdb does not currently support ARM debian packages'
echo $"See http://download.rethinkdb.com/apt/dists/${DEBIAN_VERSION}/main"
exit 723723452
fi
if [ ! -d "$INSTALL_DIR" ]; then
mkdir -p "$INSTALL_DIR"
fi
cd "$INSTALL_DIR" || exit 6384684
echo "deb http://download.rethinkdb.com/apt $DEBIAN_VERSION main" | tee /etc/apt/sources.list.d/rethinkdb.list
wget -qO- https://download.rethinkdb.com/apt/pubkey.gpg | apt-key add -
apt-get update
apt-get -yq install rethinkdb
{ echo 'runuser=rethinkdb';
echo 'rungroup=rethinkdb';
echo '# pid-file=/var/run/rethinkdb/rethinkdb.pid';
echo '# directory=/var/lib/rethinkdb/default';
echo '# log-file=/var/log/rethinkdb';
echo 'bind=127.0.0.1';
echo '# canonical-address=';
echo '# driver-port=28015';
echo '# cluster-port=29015';
echo '# join=example.com:29015';
echo '# port-offset=0';
echo '# reql-http-proxy=socks5://example.com:1080';
echo '# http-port=8091';
echo '# no-http-admin';
echo '# cores=2';
echo '# cache-size=1024';
echo '# io-threads=64';
echo '# direct-io';
echo '# server-name=server1'; } > /etc/rethinkdb/instances.d/default.conf
systemctl restart rethinkdb
}
function remove_rethinkdb {
if [ ! -d /etc/rethinkdb ]; then
return
fi
apt-get -yq remove rethinkdb
if [ -d /etc/rethinkdb ]; then
rm -rf /etc/rethinkdb
fi
if [ -f /etc/apt/sources.list.d/rethinkdb.list ]; then
rm /etc/apt/sources.list.d/rethinkdb.list
apt-get update
fi
}
# NOTE: deliberately there is no "exit 0"
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