Scale out backups-with_bareos_and_gluster
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This document discusses integrating Bareos backups with the Gluster distributed file system for scalable backups. It begins with an agenda that covers the Gluster integration in Bareos, an introduction to GlusterFS, a quick start guide, an example configuration and demo, and future plans. It then provides more details on GlusterFS architecture including concepts like bricks, volumes, peers and site replication. The remainder of the document outlines quick start instructions for setting up Gluster and configuring Bareos to use the Gluster backend for scalable backups across multiple servers.
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Scale out backups-with_bareos_and_gluster
- 1. Scale-Out backups with Bareos and Gluster Niels de Vos Gluster co-maintainer Red Hat Storage Developer [email protected]
- 2. 2 Agenda ● Gluster integration in Bareos ● Introduction into GlusterFS ● Quick Start ● Example configuration and demo ● Future plans
- 3. 3 Gluster integration in Bareos ● Store backup archives on Gluster Volumes ● Gluster native backend for Storage Daemon ● Userspace only (libgfapi), no local mountpoints ● Benefits from all Gluster capabilities: ● Scale-out and scale-up ● Multiple copies of data, local site and remote ● Coming Soon: backup Gluster Volumes with Bareos
- 4. 4 ● Scalable, general-purpose storage platform ● POSIX-y Distributed File System ● Object storage (swift) ● Distributed block storage (qemu) ● Flexible storage (libgfapi) ● No Metadata Server ● Heterogeneous Commodity Hardware ● Flexible and Agile Scaling ● Capacity – Petabytes and beyond ● Performance – Thousands of Clients What is Gluster?
- 5. 5 ● GlusterFS Native Client ● Filesystem in Userspace (FUSE) ● NFS ● Built-in Service, NFS-Ganesha with libgfapi ● SMB/CIFS ● Samba server required (libgfapi based module) ● Gluster For OpenStack (Swift-on-file) ● libgfapi flexible abstracted storage ● Integrated with QEMU, Bareos and others Data Access Overview
- 6. 6 Terminology ● Brick ● Fundamentally, a filesystem mountpoint ● A unit of storage used as a capacity building block ● Translator ● Logic between the file bits and the Global Namespace ● Layered to provide GlusterFS functionality
- 7. 7 Terminology ● Volume ● Bricks combined and passed through translators ● Ultimately, what's presented to the end user ● Peer / Node ● Server hosting the brick filesystems ● Runs the Gluster daemons and participates in volumes ● Trusted Storage Pool ● A group of peers, like a “Gluster cluster”
- 8. 8 ● Files “evenly” spread across bricks ● Similar to file-level RAID 0 ● Server/Disk failure could be catastrophic Distributed Volume
- 9. 9 ● Copies files to multiple bricks ● Similar to file-level RAID 1 Replicated Volume
- 10. 10 ● Distributes files across replicated bricks Distributes Replicated Volume
- 11. 11 Other Volume Types ● Disperse ● Erasure coding, similar to RAID-6 over the network ● JBOD (no hardware RAID), cost effective ● Sharding ● Splitting big files in pieces, distribute the pieces ● Tiering ● Hot (fast) bricks and cold (slow) bricks ● Configurable rules to migrate contents between tiers
- 12. 12 Geo-Replication ● Continuous asynchronous replication for volumes ● Incremental updates, changelog for modifications ● Intelligent rsync over SSH ● Site to site, over LAN, WAN and internet ● Mixing of private and public clouds is possible ● One master site, one or more slave sites
- 13. 13 Quick Start ● Available in Fedora, Debian, NetBSD and others ● Community packages in multiple versions for different distributions on http://download.gluster.org/ ● CentOS Storage SIG packages and add-ons ● Quick Start guides on http://gluster.org and CentOS wiki ● Bareos packages from http://download.bareos.org
- 14. 14 Quick Start – Gluster Setup 1.Install the packages (on all storage servers) 2.Start the GlusterD service (on all storage servers) 3.Peer probe other storage servers 4.Create and mount a filesystem to host a brick 5.Create a volume 6.Start the new volume 7.Mount the volume
- 15. 15 Quick Start – Gluster Setup On all storage servers: # yum install glusterfsserver # systemctl enable glusterd # systemctl start glusterd For all other storage servers: # gluster peer probe $OTHER_HOSTNAME
- 16. 16 Quick Start – Gluster Setup For each brick: # lvcreate L 512G n backups vg_bricks # mkfs t xfs /dev/vg_bricks/backups # mkdir p /bricks/backups # mount /dev/vg_data/backups /brick/backups # tail n1 /proc/mounts >> /etc/fstab
- 17. 17 Quick Start – Gluster Setup For each volume: # gluster volume create $VOLUME $HOSTNAME:/bricks/backups/data $OTHER_HOSTNAME:/bricks/backups/data … # gluster volume start $VOLUME
- 18. 18 Quick Start – Bareos Configuration 1.Install Bareos packages (inc. bareos-storage-glusterfs) 2.Enable access as non-root to Gluster 3.Create directory structure used by Bareos 4.Create a config for the Bareos Storage Daemon 5.Add the Storage to the Bareos Director configuration 6.Start the Bareos services
- 19. 19 Quick Start – Bareos Configuration On the Bareos Director (also runs Storage Daemon): # yum install bareosstorageglusterfs # cd /etc/bareos # vi bareossd.d/devicegluster.conf (set correct Archive Device URL) # vi bareossd.conf (include the devicegluster.conf with @) # vi bareosdir.conf (add Storage Daemon)
- 20. 20 Quick Start – Bareos Configuration On the storage servers: # vi /etc/glusterfs/glusterd.vol (add option rpcauthallowinsecure on) # systemctl restart glusterd On one storage server, per volume: # gluster volume set $VOLUME server.server.allowinsecure on # gluster volume stop $VOLUME # gluster volume start $VOLUME
- 21. 21 Quick Start – Bareos Configuration On one storage server, per volume: # mount t glusterfs $SERVER:/$VOLUME /mnt # mkdir /mnt/bareos # chown bareos:bareos /mnt/bareos # chmod ug=rwx /mnt/bareos # umount /mnt
- 22. 22 Quick Start – Bareos Job execution On the Bareos Director: # systemctl start bareossd # systemctl start bareosdir On the Bareos Director: # bconsole * run job=BackupCatalog
- 23. 23 Integration in other projects ● oVirt for easier installation, management and monitoring ● Nagios for improved monitoring and alerting ● OpenStack Manila (filesystem as a service) ● Hadoop plugin offers an alternative for HDFS ● Bareos Gluster File Daemon plugin ● … and many others
- 24. 24 Resources Mailing lists: [email protected] [email protected] IRC: #gluster and #gluster-dev on Freenode Links: http://gluster.org/ & http://bareos.org/ http://gluster.readthedocs.org/ http://doc.bareos.org/
- 25. Thank you! Niels de Vos [email protected] ndevos on IRC
- 26. 26 Software versions used for this demo CentOS 7.1 with updates until 29 september 2015 glusterfs-3.7.4 from download.gluster.org bareos-14.2.2 from download.bareos.org Diagrams on the first slides come from the Administrators Guide for Red Hat Gluster Storage available through https://access.redhat.com/