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Determine if you are in a Legacy Zone?


 
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Operating Systems Solaris Determine if you are in a Legacy Zone?
# 1  
Old 12-21-2015
Determine if you are in a Legacy Zone?

Hi Folks,

Just a quick question here, about Legacy Zones. Well more about how to determine if you are actually in one, on logging into a legacy zone - is there a quick way of checking that?

Regards

Gull04
# 2  
Old 12-21-2015
If you are on Solaris 10 uname -a will not show as version 10 - either 8 or 9?

Is that what you mean?
# 3  
Old 12-21-2015
Hi Jim,

Thanks for the reply, I haven't explained this very well. I have a couple of hundred servers here, covering Solaris 2.5.1 up to Solaris 11.2. They are probably 50/50 physical and virtual, all the virtual are zones (no LDOMS in use).

When I connect to a server, I'd like to identify it as a zone if possible. This is simple for Solaris 10 and 11, as you can use the zonename command to test.

However on Solaris 8 and 9, the servers can be either physical or virtual and running a
Code:
uname -a

will just return the OS, hostname, kernel version etc.

What I was looking for was a simple way of determining whether I was on a virtual or physical, but having spent a bit of time on this now it's looking like there is no easy way to tell.

Regards

Gull04
# 4  
Old 12-21-2015
Looks like you could use patchadd or pkg command to determine certain set of packages...

I see oracle recommends installing packages SUNWs8brandr from solaris 10 media, perhaps this is a good way to start...

Also there is a tool called p2v, take a look at this illumos code
https://searchcode.com/codesearch/view/5484137/

warn_zones function looks like it looks at some files which determine various info regarding zones.
Perhaps oracle version is still a plain text script Smilie

But then again i have no experience with above, so it is just babble Smilie


Regards
Peasant.
# 5  
Old 12-21-2015
Hmmmmm.......that's a good question (and although I've done a lot of work on legacy zones, I don't have one here right now). So I'll just give you my thoughts and you'll have to test them.

If there's a legacy zone (Solaris 8 or 9) running under Solaris 10 (since legacy is not supported under Solaris 11), then it must be whole root since it cannot share the system files with the global. Also, the legacy could be assigned an exclusive network interface for its use, or could share one with the global. I would expect sharing to be indicated by the interface showing as eg, hme0:1, hme0:2, and so on. That might tell you something.

Also, whilst even logged into the legacy as root I would expect commands such as 'format', 'prtdiag', and 'cfgadm' to fail with something like "you don't have the rights to do this" type message.

I would expect:

Code:
# uname -v

to output something like 'Generic' if the machine was not a physical box.

Just a few thoughts and pointers. I'll give it a go myself when I can.
# 6  
Old 12-22-2015
Searching the web it seems like

Code:
# uname -v

says "Generic_Virtual" if it's not a physical box.

Don't know whether that applies to Sparc, X86 or both.
This User Gave Thanks to hicksd8 For This Post:
# 7  
Old 12-23-2015
This page from Oracle lists commands that don't work in a non-global zone:

https://docs.oracle.com/cd/E19044-01...-19/index.html

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