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#!/bin/bash
# this script will backup all mysql databases from the server to a ftp
# server
# mysql server informations
MYSQL_SERVER="localhost"
MYSQL_USER="backup"
MYSQL_PASSWORD="password"
# databases to exclude, seperated by space
# TODO
#MYSQL_EXCLUDE_DB=""
# ftp server data
FTP_SERVER="backup"
FTP_USER="ftp"
FTP_PASSWORD="password"
# target directory on the ftp (if no / at the beginning, relativ to
# the first directory after login)
FTP_TARGET="mysql"
# temporary directory
TMP_DIRECTORY="/tmp"
# backup name
BACKUP_PREFIX="$(hostname -f)_${MYSQL_SERVER}_$(date +%F)"
# logging (0 = enabled, all other = disabled)
LOGGING="0"
## end of configuration
# only output something if logging is enabled
log() {
if [ $LOGGING -eq 0 ]; then
if [ -n "$1" ]; then
echo "$@"
else
cat
fi
fi
}
# selfupdate magic
_self_update() {
pushd $(dirname $0) &>/dev/null
git fetch origin 2>/dev/null
if [[ -n "$(git whatchanged HEAD..origin/master)" ]]; then
echo "Selfupdating backupscript..." | log
git merge origin/master | log
echo "Selfupdating done." | log
echo | log
popd &>/dev/null
exec $0
fi
popd &>/dev/null
}
# check for tools
for prog in git mysqlshow mysqldump ncftpput
do
if ! hash $prog 2>/dev/null ; then
echo "Error: This script needs: $prog. Exiting..." >&2
exit 1
fi
done
_self_update
echo "Started backup of mysql databases ($(date +%c)):" | log
echo | log
# create temporary dir
mkdir -p ${TMP_DIRECTORY}
TMP_DIR=$(mktemp -d --tmpdir=${TMP_DIRECTORY})
pushd ${TMP_DIR} >/dev/null 2>&1
# enumerate all mysql databases
MYSQL_DATABASES=$(mysqlshow -h${MYSQL_SERVER} -u${MYSQL_USER} \
-p${MYSQL_PASSWORD} | awk '{ print $2 }' | grep -v "^$" | sed \
'1d')
# backup all databases to file
for db in ${MYSQL_DATABASES}
do
mysqldump -h${MYSQL_SERVER} -u${MYSQL_USER} -p${MYSQL_PASSWORD} \
${db} | bzip2 -zc > "${BACKUP_PREFIX}_${db}.sql.bz2"
done
# echo created log
du -sch * | log
echo | log
# move backups to ftp server
for file in *
do
ncftpput -u${FTP_USER} -p${FTP_PASSWORD} -V -DD ${FTP_SERVER} \
${FTP_TARGET} ${file} >/dev/null
done
echo "Finished backup of mysql databases ($(date +%c))" | log
# restore old cwd
popd >/dev/null 2>&1
rmdir ${TMP_DIR}
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