Rsync -avx -timeout=30 -delete-excluded -exclude-from=BACKUP_filter -rsh="ssh -c arcfour -l root" mail_server:/BACKUP/ /Raid6/mail_server/current | mail -s "Backup DONE for mail-server (`hostname`)" root touch /Raid6/mail_server/current # Mail Server backups on the machine mail_server # (remember you can use -dry-run for testing) Finally, we will "touch" the /Raid6/bob/currentĭirectory to reflect the date when the script was run. This is a good practice to mail to the userīob as the user might have question about what is being backed up and they can The output of the transaction log will me mailed to theīackup_admin and to the user bob. Rsync will connect over ssh using the arcfourĮncryption algorithm to increase speed and log in as bob to the machine bob.Īll files and directories in the /BACKUP on mail_server will be backed up to The backups for Bob's machine will also use the BACKUP_filter toĮxclude files from the backups. Reflect the date when the script was run. In the end we will "touch" the /Raid6/mail_server/current directory to The output of the transaction log will me mailed to Allįiles and directories in the /BACKUP on mail_server will be backed up to Rsync will connect over ssh using the arcfour encryptionĪlgorithm to increase speed and log in as root to the machine mail_server. The Mail Server backups will use the BACKUP_filter to exclude filesįrom the backups. Remember weĪre on the backup server and pulling the files from the remote machines: Lets take a look at each of the lines we are going to use. In the following text window you will find the BACKUP_MasterServer.sh shell The primary backup script: BACKUP_MasterServer.sh This is an example of what our directory structure will look ls -la /Raid6/ĭrwx- 1 root root 4096 BACKUP_configĭrwx- 1 bob root 4096 ls -la /Raid6/mail_serverĭrwx- 1 root root 4096 ls -la /Raid6/bob Make the backup scripts directory in /Raid6/BACKUP_config. The scripts areĪs important as the user data, so putting them on a raided partition makes good The "current"ĭirectory is where the current days backups will be put.įinally, the backup scripts will go onto the raid partition. To make sub directories under mail_server and bob called current. The directory of the user machine will be owned by bob himself andĬhmod'd to 700 so he can get to his own backups and nothing else. Lets backup the mail server and the user machineįor bob. Under the directory /Raid6 we will make the sub directories for each of the Single failed disk, otherwise this will be a very short exercise. That the data you are going to put on the backup server can not be lost by a Mirroring themselves (raid 1) or any other format you choose. You can use anything from a single large disk, a set of disks As the name implies we are using a disk array of at least 4 disks in The files being backed in our exercises will be put into a directory called Retrieval time per week if you have "rm -rf" clumsy users. Using this ideology can save you hours of tedious backup For example, you could setup a sftp or passwordedįtp server allowing your user to browse their backups and retrieve the files of If a user deletes their own mail folder they can retrieve it themselves With online backups you can have all of the data available online all the If you had a 100 meg file and only 1 meg changed, then only 1 meg would Rsync recognizes this and only copies over the changedĭata. When data is added or deleted from a file the entire file does not change, Location where you want the files to be backed up. You can set up rsync to mirrorĪ list of directories and/or files and compare that list against the target You also do not want to go through the files manually using "find" and figure
Doing so would waste your time and put a strain on network bandwidth. Since the last copy you made, there is no need to copy over the whole 100 gigsĪgain. If you have 100 gigs of data you need to backup, but only 4 gig has changed Will only copy the data that is different from the source and target What is different in rsync, than copy for example, is it You to specify a list of files or a directory structure and make an exact copy Rsync is one of the most powerful open source tools you can use. This is what was said about rsync as a backup tool in "Using rsync to backup user The data from other servers and user systems to the backup server. We are going to design the logic using the open source binary rsync toīackup to on-line storage using a raid or server with redundant disks to rsync
Where it could take hours to get the data back.
#Grsync export as rsync script software#
Going to be relieved to know the files are accessible on the backup server.īut, we are not talking about a tape server with proprietary backup software At some point data is going to be lost and you are Using a centralized backup server might be one of the most important safety
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