rsnapshot是一个开源的备份和恢复工具。
它可以创建每天，每周，每小时和每月备份文件系统。
它也可以创建本地和远程的MySQL服务器的备份。
如何使用这个脚本工具呢？
我们需要做好如下的配置：
复制代码 代码示例:
backup.example.com ==> rsnapshot server with RAID protected disks.
mysql.example.com ==> Remote mysql server
webserver.example.com ==> Remote Apache webserver
Configuration on remote mysql.example.com server
接下来就是，下载该脚本工具，并放置在远程mysql服务器中的/root/rsnapshot.mysql中。
然后，设置好可执行权限即可。
操作步骤：
复制代码 代码示例:
# cd /root
# wget http://bash.cyberciti.biz/dl/408.sh.zip
# unzip 408.sh.zip
# mv 408.sh rsnapshot.mysql
# rm 408.sh.zip
# chmod +x rsnapshot.mysql
下面开始定义脚本相关的配置信息。
配置rsnapshot服务器。
找到snapshot的配置文件，查看snapshot_root：
复制代码 代码示例:
# grep snapshot_root /etc/rsnapshot.conf
输出：
复制代码 代码示例:
snapshot_root /.raiddisk/rsnapshots/
rsnapshot will store mysql backup at /.raiddisk/rsnapshots/tmp/ before moving to /.raiddisk/rsnapshots/hourly.0/mysql/ directory. Open your rsnapshot.conf file and add the following configuration:
### start db backup for remote server called mysql.example.com ###
# dump all databases at remote server itself
backup_script /usr/bin/ssh root@mysql.example.com "/root/rsnapshot.mysql" unused1/
# Copy all databases from remote server to local server and rsnapshot will move it to /.raiddisk/rsnapshots/$level/mysql/ directory (where, $level can be hourly, monthly etc).
backup_script /usr/bin/scp -r root@mysql.example.com:/tmp/rsnapshot/mysql/ /.raiddisk/rsnapshots/tmp/ mysql/
Here is sample configuration for both web and mysql server:
#
# Backup mysql.example.com
#
backup_script /usr/bin/ssh root@mysql.example.com "/root/rsnapshot.mysql" unused1/
backup_script /usr/bin/scp -r root@mysql.example.com:/tmp/rsnapshot/mysql/ /.raiddisk/rsnapshots/tmp/ mysql/
#
# Backup webserver.example.com
#
backup root@webserver.example.com:/etc/ webserver.example.com/
backup root@webserver.example.com:/var/www/ webserver.example.com/
backup root@webserver.example.com:/root/ webserver.example.com/
backup root@webserver.example.com:/var/spool/ webserver.example.com/
保存并关闭文件，然后测试以上的配置：
复制代码 代码示例:
# rsnapshot configtest
附上shell 脚本代码，如下：
复制代码 代码示例:
#!/bin/bash
# by www.jb200.com
### SETUP MYSQL LOGIN ###
MUSER='YOUR-MySQL_USERNAME'
MPASS='YOUR-MySQL_PASSWORD'
MHOST="127.0.0.1"
### Set to 1 if you need to see progress while dumping dbs ###
VERBOSE=0
### Set bins path ###
GZIP=/bin/gzip
MYSQL=/usr/bin/mysql
MYSQLDUMP=/usr/bin/mysqldump
RM=/bin/rm
MKDIR=/bin/mkdir
MYSQLADMIN=/usr/bin/mysqladmin
GREP=/bin/grep
### Setup dump directory ###
BAKRSNROOT=/tmp/rsnapshot/mysql
#####################################
### ----[ No Editing below ]------###
#####################################
### Default time format ###
TIME_FORMAT='%H_%M_%S%P'
### Make a backup ###
backup_mysql_rsnapshot(){
local DBS="$($MYSQL -u $MUSER -h $MHOST -p$MPASS -Bse 'show databases')"
local db="";
[ ! -d $BAKRSNROOT ] && ${MKDIR} -p $BAKRSNROOT
${RM} -f $BAKRSNROOT/* >/dev/null 2>&1
[ $VERBOSE -eq 1 ] && echo "*** Dumping MySQL Database ***"
[ $VERBOSE -eq 1 ] && echo -n "Database> "
for db in $DBS
do
local tTime=$(date +"${TIME_FORMAT}")
local FILE="${BAKRSNROOT}/${db}.${tTime}.gz"
[ $VERBOSE -eq 1 ] && echo -n "$db.."
${MYSQLDUMP} -u ${MUSER} -h ${MHOST} -p${MPASS} $db | ${GZIP} -9 > $FILE
done
[ $VERBOSE -eq 1 ] && echo ""
[ $VERBOSE -eq 1 ] && echo "*** Backup done [ files wrote to $BAKRSNROOT] ***"
}
### Die on demand with message ###
die(){
echo "$@"
exit 999
}
### Make sure bins exists.. else die
verify_bins(){
[ ! -x $GZIP ] && die "File $GZIP does not exists. Make sure correct path is set in $0."
[ ! -x $MYSQL ] && die "File $MYSQL does not exists. Make sure correct path is set in $0."
[ ! -x $MYSQLDUMP ] && die "File $MYSQLDUMP does not exists. Make sure correct path is set in $0."
[ ! -x $RM ] && die "File $RM does not exists. Make sure correct path is set in $0."
[ ! -x $MKDIR ] && die "File $MKDIR does not exists. Make sure correct path is set in $0."
[ ! -x $MYSQLADMIN ] && die "File $MYSQLADMIN does not exists. Make sure correct path is set in $0."
[ ! -x $GREP ] && die "File $GREP does not exists. Make sure correct path is set in $0."
}
### Make sure we can connect to server ... else die
verify_mysql_connection(){
$MYSQLADMIN -u $MUSER -h $MHOST -p$MPASS ping | $GREP 'alive'>/dev/null
[ $? -eq 0 ] || die "Error: Cannot connect to MySQL Server. Make sure username and password are set correctly in $0"
}
### main ####
verify_bins
verify_mysql_connection
backup_mysql_rsnapshot
