How to install Talos on a single-disk machine
Default Talos setup assumes that each node has a primary and secondary disks, used for system and user storage, respectively. However, it’s possible to use a single disk, allocating space for user storage.
This configuration must be applied with the first
talosctl apply
or
talm apply
— the one with the -i (--insecure) flag.
Applying changes after initialization will not have any effect.
For talosctl, append the following lines to patch.yaml:
---
apiVersion: v1alpha1
kind: VolumeConfig
name: EPHEMERAL
provisioning:
minSize: 70GiB
---
apiVersion: v1alpha1
kind: UserVolumeConfig
name: data-storage
provisioning:
diskSelector:
match: disk.transport == 'nvme'
minSize: 400GiB
For talm, append the same lines at end of the first node’s configuration file, such as nodes/node1.yaml.
Read more in the Talos documentation: https://www.talos.dev/v1.10/talos-guides/configuration/disk-management/.
After applying the configuration, wipe the data-storage partition:
kubectl -n kube-system debug -it --profile sysadmin --image=alpine node/node1
apk add util-linux
umount /dev/nvme0n1p6 ### The partition allocated for user storage
rm -rf /host/var/mnt/data-storage
wipefs -a /dev/nvme0n1p6
exit
When the storage is configured, add the new partition to LINSTOR:
linstor ps cdp zfs node1 nvme0n1p6 --pool-name data --storage-pool data1
Check the result:
linstor sp l
Output will be similar to this example:
+---------------------------------------------------------------------------------------------------------------------------------------+
| StoragePool | Node | Driver | PoolName | FreeCapacity | TotalCapacity | CanSnapshots | State | SharedName |
|=======================================================================================================================================|
| DfltDisklessStorPool | node1 | DISKLESS | | | | False | Ok | node1;DfltDisklessStorPool |
| data | node1 | ZFS | data | 351.46 GiB | 476 GiB | True | Ok | node1;data |
| data1 | node1 | ZFS | data | 378.93 GiB | 412 GiB | True | Ok | node1;data1 |