Resize Filesystems on a Host¶

You can resize a filesystem on a host using the system host-fs-modify command.

The following combinations of filesystem and host types are supported.

Filesystem	Host Type	Folder	Logical Volume	Default Size
backup	controller	/opt/backups	backup-lv	25 GiB
docker	All node types	/var/lib/docker	docker-lv	30 GiB
kubelet	All node types	/var/lib/kubelet	kubelet-lv	10 GiB
log	All node types	/var/log	log-lv	7.5 GiB
scratch	All node types	/scratch	scratch-lv	variable

The following example changes the docker and kubelet filesystem sizes on a controller.

Procedure

List the filesystems on the controller.

~(keystone_admin)$ system host-fs-list controller-1
+--------------------------------------+---------+-------------+----------------+
| UUID                                 | FS Name | Size in GiB | Logical Volume |
+--------------------------------------+---------+-------------+----------------+
| a4d83571-a555-4ba5-999f-af709206ae35 | backup  | 25          | backup-lv      |
| d57652a1-af17-47b8-b941-9ebfeee4a56f | docker  | 30          | docker-lv      |
| a84374c6-8917-4db5-bd34-2a8d244f2bf6 | kubelet | 10          | kubelet-lv     |
| f0c5a8a9-57c7-4072-932d-8f7aac519f8c | log     | 8           | log-lv         |
| 2c026d6f-5c03-4135-abca-c0047aa7f5a6 | scratch | 8           | scratch-lv     |
+--------------------------------------+---------+-------------+----------------+

Note that the docker and kubelet filesystems are 30 GiB and 10 GiB respectively.

The syntax of the host-fs-list command is:

host-fs-list <hostname_or_id>

<hostname_or_id> is the host name or UUID of the host.

Optionally, list details about a filesystem.

The syntax of the host-fs-show command is:

host-fs-show <hostname_or_id> <fs_name_or_uuid>

<hostname_or_id>: The host name or UUID of the host.
<fs_name_or_uuid>: The name or UUID of the file system.

~(keystone_admin)$ system host-fs-show controller-1 d57652a1-af17-47b8-b941-9ebfeee4a56f
+----------------+--------------------------------------+
| Property       | Value                                |
+----------------+--------------------------------------+
| uuid           | d57652a1-af17-47b8-b941-9ebfeee4a56f |
| name           | docker                               |
| size           | 30                                   |
| logical_volume | docker-lv                            |
| created_at     | 2019-08-08T03:05:25.341669+00:00     |
| updated_at     | None                                 |
+----------------+--------------------------------------+

Modify the sizes of the docker and kubelet filesystems.

The syntax of the host-fs-modify command is:

host-fs-modify <hostname_or_id> <fs_name>=<size> [<fs_name>=<size>]

<hostname_or_id>: The host name or UUID of the node.
<fs_name>: The name of the filesystem.
<size>: The new size of the filesystem, in GiB.

The following command changes the size of the docker filesystem to 31 GiB and that of the kubelet filesystem to 11 GiB.

~(keystone_admin)$ system host-fs-modify controller-1 docker=31 kubelet=11
+--------------------------------------+---------+-------------+----------------+
| UUID                                 | FS Name | Size in GiB | Logical Volume |
+--------------------------------------+---------+-------------+----------------+
| a4d83571-a555-4ba5-999f-af709206ae35 | backup  | 25          | backup-lv      |
| d57652a1-af17-47b8-b941-9ebfeee4a56f | docker  | 31          | docker-lv      |
| a84374c6-8917-4db5-bd34-2a8d244f2bf6 | kubelet | 11          | kubelet-lv     |
| 2c026d6f-5c03-4135-abca-c0047aa7f5a6 | scratch | 8           | scratch-lv     |
+--------------------------------------+---------+-------------+----------------+

Resize Filesystems on a Host

Resize Filesystems on a Host¶

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