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Fix #4408: add 'disaster recovery' section for tapes
Add new markers so that we can refer to the chapters. Signed-off-by: Laurențiu Leahu-Vlăducu <l.leahu-vladucu@proxmox.com> Reviewed-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Laurențiu Leahu-Vlăducu
Thomas Lamprecht
parent
46d4ceef77
commit
5863e5ff5d
@ -470,6 +470,8 @@ version of your master key. The following command sends the output of the
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proxmox-backup-client key paperkey --output-format text > qrkey.txt
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.. _client_restoring_data:
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Restoring Data
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--------------
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@ -61,6 +61,7 @@ In general, LTO tapes offer the following advantages:
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Note that `Proxmox Backup Server` already stores compressed data, so using the
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tape compression feature has no advantage.
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.. _tape-supported-hardware:
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Supported Hardware
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------------------
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@ -969,6 +970,8 @@ You can restore from a tape even without an existing catalog, but only the
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whole media set. If you do this, the catalog will be automatically created.
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.. _tape_key_management:
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Encryption Key Management
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~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -1180,3 +1183,159 @@ In combination with fitting prune settings and tape backup schedules, this
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achieves long-term storage of some backups, while keeping the recent
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backups on smaller media sets that expire roughly every 4 weeks (that is, three
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plus the current week).
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Disaster Recovery
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-----------------
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.. _Command-line Tools: command-line-tools.html
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In case of major disasters, important data, or even whole servers might be
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destroyed or at least damaged up to the point where everything - sometimes
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including the backup server - has to be restored from a backup. For such cases,
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the following step-by-step guide will help you to set up the Proxmox Backup
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Server and restore everything from tape backups.
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The following guide will explain the necessary steps using both the web GUI and
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the command line tools. For an overview of the command line tools, see
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`Command-line Tools`_.
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Setting Up a Datastore
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~~~~~~~~~~~~~~~~~~~~~~
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.. _proxmox-backup-manager: proxmox-backup-manager/man1.html
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.. _Installation: installation.html
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After you set up a new Proxmox Backup Server, as outlined in the `Installation`_
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chapter, first set up a datastore so a tape can be restored to it:
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#. Go to **Administration -> Storage / Disks** and make sure that the disk that
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will be used as a datastore shows up.
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#. Under the **Directory** or **ZFS** tabs, you can either choose to create a
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directory or create a ZFS ``zpool``, respectively. Here you can also directly
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add the newly created directory or ZFS ``zpool`` as a datastore.
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Alternatively, the `proxmox-backup-manager`_ can be used to perform the same
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tasks. For more information, check the :ref:`datastore_intro` documentation.
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Setting Up the Tape Drive
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~~~~~~~~~~~~~~~~~~~~~~~~~
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#. Make sure you have a properly working tape drive and/or changer matching to
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medium you want to restore from.
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#. Connect the tape changer(s) and the tape drive(s) to the backup server. These
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should be detected automatically by Linux. You can get a list of available
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drives using:
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.. code-block:: console
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# proxmox-tape drive scan
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┌────────────────────────────────┬────────┬─────────────┬────────┐
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│ path │ vendor │ model │ serial │
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╞════════════════════════════════╪════════╪═════════════╪════════╡
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│ /dev/tape/by-id/scsi-12345-sg │ IBM │ ULT3580-TD4 │ 12345 │
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└────────────────────────────────┴────────┴─────────────┴────────┘
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You can get a list of available changers with:
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.. code-block:: console
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# proxmox-tape changer scan
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┌─────────────────────────────┬─────────┬──────────────┬────────┐
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│ path │ vendor │ model │ serial │
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╞═════════════════════════════╪═════════╪══════════════╪════════╡
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│ /dev/tape/by-id/scsi-CC2C52 │ Quantum │ Superloader3 │ CC2C52 │
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└─────────────────────────────┴─────────┴──────────────┴────────┘
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For more information, please read the chapters
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on :ref:`tape_changer_config` and :ref:`tape_drive_config`.
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#. If you have a tape changer, go to the web interface of the Proxmox Backup
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Server, go to **Tape Backup -> Changers** and add it. For examples using the
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command line, read the chapter on :ref:`tape_changer_config`. If the changer
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has been detected correctly by Linux, the changer should show up in the list.
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#. In the web interface, go to **Tape Backup -> Drives** and add the tape drive
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that will be used to read the tapes. For examples using the command line,
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read the chapter on :ref:`tape_drive_config`. If the tape drive has been
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detected correctly by Linux, the drive should show up in the list. If the
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drive also has a tape changer, make sure to select the changer as well and
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assign it the correct drive number.
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Restoring Data From the Tape
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. _proxmox-tape: proxmox-tape/man1.html
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.. _proxmox-backup-client: proxmox-backup-client/man1.html
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.. _Restore: https://pve.proxmox.com/pve-docs/chapter-vzdump.html#vzdump_restore
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The following guide will explain the steps necessary to restore data from a
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tape, which can be done over either the web GUI or the command line. For details
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on the command line, read the documentation on the `proxmox-tape`_ tool.
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To restore data from tapes, do the following:
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#. Insert the first tape (as displayed on the label) into the tape drive or, if
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a tape changer is available, use the tape changer to insert the tape into the
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right drive. The web GUI can also be used to load or transfer tapes between
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tape drives by selecting the changer.
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#. If the backup has been encrypted, the encryption keys need to be restored as
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well. In the **Encryption Keys** tab, press **Restore Key**. For more
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details or examples that use the command line, read the
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:ref:`tape_key_management` chapter.
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#. The procedure for restoring data is slightly different depending on whether
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you are using a standalone tape drive or a changer:
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* For changers, the procedure is simple:
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#. Insert all tapes from the media set you want to restore from.
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#. Click on the changer in the web GUI, click **Inventory**, make sure
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**Restore Catalog** is selected and press OK.
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* For standalone drives, the procedure would be:
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#. Insert the first tape of the media set.
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#. Click **Catalog**.
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#. Eject the tape, then repeat the steps for the remaining tapes of the
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media set.
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#. Go back to **Tape Backup**. In the **Content** tab, press **Restore** and
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select the desired media set. Choose the snapshot you want to restore, press
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**Next**, select the drive and target datastore and press **Restore**.
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#. By going to the datastore where the data has been restored, under the
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**Content** tab you should be able to see the restored snapshots. In order to
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access the backups from another machine, you will need to configure the
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access to the backup server. Go to **Configuration -> Access Control** and
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either create a new user, or a new API token (API tokens allow easy
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revocation if the token is compromised). Under **Permissions**, add the
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desired permissions, e.g. **DatastoreBackup**.
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#. You can now perform virtual machine, container or file restores. You now have
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the following options:
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* If you want to restore files on Linux distributions that are not based on
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Proxmox products or you prefer using a command line tool, you can use the
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`proxmox-backup-client`_, as explained in the
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:ref:`client_restoring_data` chapter. Use the newly created API token to
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be able to access the data. You can then restore individual files or
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mount an archive to your system.
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* If you want to restore virtual machines or containers on a Proxmox VE
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server, add the datastore of the backup server as storage and go to
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**Backups**. Here you can restore VMs and containers, including their
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configuration. For more information on restoring backups in Proxmox VE,
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visit the `Restore`_ chapter of the Proxmox VE documentation.
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