89 lines
3.0 KiB
ReStructuredText
89 lines
3.0 KiB
ReStructuredText
Partitioning
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============
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Default Partitioning
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--------------------
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Partitions system are configured with a standard schema using LVM, so
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that they can be possibly changed afterwards.
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By default the whole space available on the first block device is used
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and any existing partition is removed.
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Alternatively you might set the sysdb attribute ``system_disk`` with the
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device name of the disk which should be used instead::
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bob node set-attr $FQDN system_disk=md126
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The default partition schema for RHEL 7 is:
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- create one primary ``/boot`` partition of 1Gb;
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- create the ``vg_root`` Volume Group that uses the rest of the disk;
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- on ``vg_root`` create the following logical volumes:
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- ``lv_root`` of 12 Gb size for ``/root``;
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- ``lv_var`` of 8 Gb size for ``/var``;
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- ``lv_var_log`` of 2 Gb size for ``/var/log``;
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- ``lv_tmp`` of 2 Gb size for ``/tmp``.
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For RHEL 8 it is:
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- create one primary ``/boot`` partition of 1Gb;
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- create the ``vg_root`` Volume Group that uses the rest of the disk;
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- on ``vg_root`` create the following logical volumes:
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- ``lv_root`` of 14 Gb size for ``/root``;
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- ``lv_home`` of 2 Gb size for ``/home``;
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- ``lv_var`` of 8 Gb size for ``/var``;
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- ``lv_var_log`` of 3 Gb size for ``/var/log``;
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- ``lv_var_tmp`` of 2 Gb size for ``/var/log``;
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- ``lv_tmp`` of 2 Gb size for ``/tmp``.
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Partial Custom Partitioning
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---------------------------
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To increase these sizes of the above listed default volumes, you might use :doc:`vgroot::path <../puppet/profiles/vgroot>` in Hiera::
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vgroot::path:
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lv_root: 50GB
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lv_var: 30GB
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To add a new volume to the system disk (Volume Group ``vg_root``), you need to address the `lvm Puppet module <https://forge.puppet.com/modules/puppetlabs/lvm>`_ directly in Hiera::
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lvm::volume_groups:
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vg_root:
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physical_volumes:
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- /dev/nvme0n1p3
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logical_volumes:
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lv_data:
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size: 3TB
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fs_type: 'xfs'
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mountpath: '/mnt/data'
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size_is_minsize: true
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Please note that you need also to list the partition on which ``vg_root`` is located.
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The same you can do to add partitions outside of the system disk, but here you need to define the full LVM volume group::
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lvm::volume_groups:
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vg_data:
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physical_volumes:
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- '/dev/sdb'
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logical_volumes:
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lv_usr_local:
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mountpath: '/usr/local'
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fs_type: 'xfs'
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Full Custom Partitioning
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------------------------
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It is possible to customize the partitioning by using the ``partitions`` attribute on sysdb.
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The ``partitions`` attribute can take two values:
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- ``manual``: this will not partition the disks and the installation process will wait for manual partitioning;
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- ``<URL>``: it is assumed to be a file containing the partitioning commands as used in kickstart.
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If it is not possible to download the given URL the system fails-back to manual at installation time.
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Please also note that no check is done on the URL content.
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