Task #7649
Updated by Nico Schottelius almost 5 years ago
* User wants to have possibility to roll back in time
h2. Implementation
* We can use ceph snapshots
* We might need/want to signal qemu before taking the snapshot
** how?
** Difference between uncloud and opennebula?
h2. User facing API / CLI
* User can set a maximum amount of snapshots (?)
** Useful for auto rotate
* User can configure a snapshot
* User can list all snapshots
* User can delete snapshots
h3. Ideas for an CLI
<pre>
ungleich-cli --username xx --password yy list-vms
ungleich-cli --username xx --password yy vm-snaphot-create <vmid>
ungleich-cli --username xx --password yy vm-snaphot-list <vmid>
ungleich-cli --username xx --password yy vm-snaphot-restore <vmid> <snapshot>
ungleich-cli --username xx --password yy vm-snaphot-delete <vmid> <snapshot>
</pre>
h2. Billing
Regular pricing - it's the same usage
* SSD storage 10GB/month@3.5CHF
* HDD storage 100GB/month@1.5CHF
Billed per gigabyte per second (?) basis (?)
h3. Per second calculation: SSD
<pre>
>>> (3.5/10.)/30/24/3600
1.3503086419753083e-07
>>> per_gb_per_second=((3.5/10.)/30/24/3600)
>>> 1.36*10**(-7) * 10 * 86400 * 30
3.5251200000000003
>>> "{:0.9f}".format(1.36*10**(-7))
'0.000000136'
>>> 1.4*10**(-7) * 10 * 86400 * 30
3.628799999999999
</pre>
* Could offer it for 0.00000014 CHF per GB per second
* Monthly would stay the same
* User wants to have possibility to roll back in time
h2. Implementation
* We can use ceph snapshots
* We might need/want to signal qemu before taking the snapshot
** how?
** Difference between uncloud and opennebula?
h2. User facing API / CLI
* User can set a maximum amount of snapshots (?)
** Useful for auto rotate
* User can configure a snapshot
* User can list all snapshots
* User can delete snapshots
h2. Billing
Regular pricing - it's the same usage
* SSD storage 10GB/month@3.5CHF
* HDD storage 100GB/month@1.5CHF
Billed per gigabyte per second (?) basis (?)
h3. Per second calculation: SSD
<pre>
>>> (3.5/10.)/30/24/3600
1.3503086419753083e-07
>>> per_gb_per_second=((3.5/10.)/30/24/3600)
>>> 1.36*10**(-7) * 10 * 86400 * 30
3.5251200000000003
>>> "{:0.9f}".format(1.36*10**(-7))
'0.000000136'
>>> 1.4*10**(-7) * 10 * 86400 * 30
3.628799999999999
</pre>
* Could offer it for 0.00000014 CHF per GB per second
* Monthly would stay the same
h3. Per second calculation: HDD
<pre>
>>> per_gb_per_second=((1.5/100.)/30/24/3600)
>>> per_gb_per_second
5.787037037037037e-09
>>>
>>> "{:0.10f}".format(per_gb_per_second)
'0.0000000058'
>>> 0.0000000058* 100 * 86400 * 30
1.5033599999999998
</pre>
* Could offer for 0.0000000058 per gb per second
* However units will be smaller than 100gb packages
h2. Testing
* Using my private VM
* Locating the disk image
<pre>
[10:43:59] red2.place5:~# rbd -p one ls | grep 10761
one-60-10761-0
[10:44:14] red2.place5:~#
</pre>
* Does not show all attached disks -> need to go via opennebula api
h3. Per second calculation: HDD
<pre>
>>> per_gb_per_second=((1.5/100.)/30/24/3600)
>>> per_gb_per_second
5.787037037037037e-09
>>>
>>> "{:0.10f}".format(per_gb_per_second)
'0.0000000058'
</pre>
h2. Testing
* Using my private VM
* Locating the disk image
<pre>
[10:43:59] red2.place5:~# rbd -p one ls | grep 10761
one-60-10761-0
[10:44:14] red2.place5:~#
</pre>
* Does not show all attached disks -> need to go via opennebula api
h2. Steps
* Create a PoC for some VMs
** record creation and deletion time is needed for billing later
* Implement a CLI to be used by staff (i.e. no customer auth)
* Integrate it into billing