[Kimchi-devel] [PATCH RFC] Discover Kimchi peers using openSLP

[Aline Manera]

On 08/18/2014 03:54 AM, Royce Lv wrote:
> On 2014年08月16日 03:06, Aline Manera wrote:
>> GET /peers
>> [
>>    "https://ubuntu-vm:8001",
>>    "https://rhel-vm:8001",
>> ]
>>
>> How to test it?
>> - Install openslp and openslp-server
>> - Start opnslp service: servicd slpd start
>> - Make sure to open openSLP port (427 UDP and TCP) on firewall
> SLP seems to be a good idea for our scenario, here I have some questions:
>
> 1.Do we need a centralized server(slpd) to track service or every host 
> will have an slpd installed and can handle request?

Every Kimchi server must have an slpd installed to handle the requests.

> 2.How do we define peers--Even some hosts have kimchi service enabled, 
> they are of different hardware/software which prevent them from 
> migration.

The idea here is only discover Kimchi peers in the same network. Of 
course, when we use it for migration we will need to include some 
restrictions.

> 3.Do we support peer discovery between hosts which located distantly 
> with each other? Will the peer query time consuming?

Kimchi peers are in the same network. So long distant server will not 
fill this requirement.

> 4.What are kimchi peer discovery's use cases:a. migration, b. browse 
> other hosts from one access point, c. others?

I can only think about A and B by now.

>
>>
>> I tested it using VMs as they are in the same host network.
>>
>> TODO:
>> #1: Add option on Kimchi config file to enable/disable this feature
>> #2: Update /config/capabilities to return if federation is enabled or 
>> not
>> GET /config/capabilities
>> { ...
>>    federation: enable|disable
>> }
>>
>> #3: Create README-federation file to provide details on how to enable 
>> this feature
>> #4: Update API.md, mockmodel and test cases
>>
>> Aline Manera (1):
>>    Discover Kimchi peers using openSLP
>>
>>   src/kimchi/control/peers.py | 29 ++++++++++++++++++++++++++
>>   src/kimchi/model/peers.py   | 50 
>> +++++++++++++++++++++++++++++++++++++++++++++
>>   2 files changed, 79 insertions(+)
>>   create mode 100644 src/kimchi/control/peers.py
>>   create mode 100644 src/kimchi/model/peers.py
>>
>