====== Other notes ======

==== Enable/Disable Maintence Mode ====
<code>
#Enable
ha-manager crm-command node-maintenance enable myServer
#Disable
ha-manager crm-command node-maintenance enable myServer
</code>

==== Create empty (dummy) VMs ====
<code>
qm create <new ID>
Example:
qm create 200
</code>

==== List VMs ====
<code>
qm list
</code>

==== Corosync  ====
Very important to have a low latency connection. A bond would add 100ms per failure, so it would work. It is better to have two separate cluster links. 

==== Windows VirtIO drivers ====
The Windows VirtIO drivers can be found at:
https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/
The version to be chosen depends on Windows installation. Older Windows versions
need older driver packages.

==== Windows change disk type from SATA to SCSI ====
  * Before you can change the disk type, the drivers must be installed. 
  * Add a small SCSI disk and reboot the server. 
  * Check if there is a triangle in the device manager
  * shutdown the server
  * detach and remove the small disk
  * detach your OS disk
  * add your OS disk and change the device type to SCSI
  * also change the boot order

Now it should work, that you can boot from your disk attached as SCSI disk. SCSI is normally faster then VirtIO for Windows OS. 


==== Enter a LXC container from the Proxmox shell: ====
<code>
pct enter <container ID>
# Example: 
pct enter 101
</code>

==== Import disk to VM ==== 
<code>
qm disk import <VM-ID> </path/to/image.qcow2> <storage-name>
# Example: 
qm disk import 103 /mnt/pve/samba/import/Rocky-10-GenericCloud-Base.latest.x86_64.qcow2 zpool
</code>
After the import is DONE the this is marked as //unused disk// at the VM. With an double click it could be added. Also the boot order must be adjusted. 

==== Change the VM ID range ==== 
{{:myhelp:change_vm_id_range.png?600|}}
Datacenter -> Options -> Next Free VMID Range

===== Ceph =====
Install Ceph per node. 
==== Usage per disk and much more info ====
<code>ceph osd  df tree</code>
==== Usage of Ceph  ====
<code>ceph df</code>

==== OSD create on CLI  ====
<code>pveceph osd create /dev/sdX</code>


====== OT takeaways from the training ======
https://www.turnkeylinux.org/ -> Turnkey applications based on LXC

https://www.olivetin.app/ -> Small and simple automater

https://cloudinit.readthedocs.io/en/latest/reference/examples.html -> Cloud init examples

https://alerta.io/ -> Monitoring - Notification