Re: [Astlinux-devel] Tarsnap Backups

[Michael K. <mic...@ip...>]

Thanks Lonnie

Yes I certainly hear what you are saying and it does sort of defeat the store only once purpose of deduplication but does it break it? 
Effectively all I am doing is presenting a list of included files to tarsnap!

Regards
Michael Knill

On 7/9/18, 4:49 am, "Lonnie Abelbeck" <li...@lo...> wrote:

    Hi Michael,
    
    > So I assume that I can just replace 2) with tarsnap
    
    No, that would somewhat defeat tarsnap's "Deduplication" http://www.tarsnap.com feature, which saves you money.
    
    I would replace all 1-3 steps with tarsnap.  Each AstLinux box would have their own tarsnap.key .
    
    The web interface
    Network tab -> Tarsnap Backup: { Tarsnap Backup Options }
    
    defines the following variables
    --
    BACKUP_KD_DEFAULTS
    BACKUP_KD_INCLUDE_DIRS
    BACKUP_KD_INCLUDE_FILES
    BACKUP_ASTURW_DEFAULTS
    BACKUP_ASTURW_INCLUDE_DIRS
    BACKUP_ASTURW_INCLUDE_FILES
    BACKUP_PRUNE_AGE_DAYS
    BACKUP_NOTIFY
    BACKUP_NOTIFY_FROM
    --
    
    Files/Dirs automatically excluded via /etc/tarsnap.conf:
    --
    exclude *.bak
    exclude *.db
    exclude *.mdb
    exclude *.sqlite3
    exclude *.fossil
    exclude *.netset
    exclude *.rom
    exclude *.bin
    --
    
    For most users the defaults just work, and possibly add a few tweaks.
    
    If you want *everything* (minus the excluded suffixes), disable both "Backup [kd] Defaults" and "Backup [asturw] Defaults:" and specify "*" for all four Backup [kd|asturw] Dirs/Files entries.  Though I would doubt many users would do that.
    
    Be sure to perform some dry-run testing from the command line to help understand what is happening.
    --
    tarsnap-backup --help
    --
    
    
    > PS the doco mentions that I can edit /etc/tarsnap.conf. Does that mean that /mnt/kd/tarsnap.conf will take precedence or do I need to edit this file?
    
    It was intended that most users will never need to edit the /etc/tarsnap.conf file, and as such it is not linked to /mnt/kd/tarsnap.conf .  Editing /etc/tarsnap.conf will use unionfs just as editing /etc/rc.modules does.
    
    Lonnie
    
    
    
    > On Sep 5, 2018, at 9:02 PM, Michael Knill <mic...@ip...> wrote:
    > 
    > Hi Devs
    >  
    > I have decided that I will be changing my current backup strategy to Tarsnap for the following reasons:
    > 	• I need to back up sensitive files securely
    > 	• I need to be performing daily backups as I suspect a few of my customers will be doing their own basic administration soon
    > 	• And it looks awesome from my preliminary tests
    >  
    > My current backup strategy is as follows:
    > 	1) Find all changed files with rsync by comparing files in /mnt/kd and /mnt/kd/.ref and using an excluded directory/file list.
    > 	2) Use tar to back up all the resulting files on the Astlinux server
    > 	3) Move the backup file to the management server via SCP
    >  
    > So I assume that I can just replace 2) with tarsnap instead of tar and not do 3) but the problem is that I cant do this natively using the tarsnap-backup script.
    > Will I need to modify/recreate it or is there another way?
    >  
    > PS the doco mentions that I can edit /etc/tarsnap.conf. Does that mean that /mnt/kd/tarsnap.conf will take precedence or do I need to edit this file?
    >  
    > Thanks
    >  
    > Regards
    > Michael Knill
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