Re: New OpenStack instance - status

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On 03/09/2015 10:29 AM, Miroslav Suchý wrote:
> On 03/07/2015 07:29 PM, Kevin Fenzi wrote:
>> > * I see that the tenants have the same internal 172.16.0.0 net right
>> >   now, can we make sure we seperate them from each other? ie, I don't
>> >   want a infrastructure instance being able to talk to a copr builder
>> >   if we can avoid it. 
> Are you sure?
> From: playbooks/hosts/fed-cloud09.cloud.fedoraproject.org.yml
>   # 172.16.0.1/12 -- 172.21.0.1/12 - Free to take
>   # 172.23.0.1/12 - free (but used by old cloud)
>   # 172.24.0.1/12 - RESERVED it is used internally for OS
>   # 172.25.0.1/12 - Cloudintern
>   # 172.26.0.1/12 - infrastructure
>   # 172.27.0.1/12 - persistent
>   # 172.28.0.1/12 - transient
>   # 172.29.0.1/12 - scratch
>   # 172.30.0.1/12 - copr
>   # 172.31.0.1/12 - Free to take
> And checking dashboard I see infra in .26 network and copr in .16. Hmm that is different one, but copr should have .30.
> Playbook seems to be correct. Strange.

Ah. Of course /12 is mistake. There should be /16.
However when I see that with /16 we have only 7 free subnets. I would rather use /20 subnets, which would give us 4094
IPs per one subnet. That should be enough and it gives us plenty of subnets for use.


So it would be:
  # 172.16.0.1/16 -- 172.21.0.1/20- Free to take
  # 172.23.0.1/16 - free (but used by old cloud)
  # 172.24.0.1/24 - RESERVED it is used internally for OS
  # 172.25.0.1/20  - Cloudintern (172.25.0.1 - 172.25.15.254)
  # 172.25.16.1/20 - infrastructure (172.25.16.1 - 172.25.31.254)
  # 172.25.32.1/20 - persistent (172.25.32.1 - 172.25.47.254)
  # 172.25.48.1/20 - transient (172.25.48.1 - 172.25.63.254)
  # 172.25.64.1/20 - scratch (172.25.64.1 - 172.25.79.254)
  # 172.25.80.1/20 - copr (172.25.80.1 - 172.25.95.254)
  # 172.25.96.1/20 -- 172.25.240.1/20 - free
  # 172.26.0.1/16 -- 172.31.0.1/16 - free


Comments?


-- 
Miroslav Suchy, RHCE, RHCDS
Red Hat, Senior Software Engineer, #brno, #devexp, #fedora-buildsys
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