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solaris zones: what is it for?

hi newbie here in solaris. . .just wondering, what's the easiest description of a solaris zone? i cannot really get the idea even in wiki.

tried doing one in my vm :

Code:



bash-3.00# zonecfg -z testzone

testzone: No such zone configured

Use 'create' to begin configuring a new zone.

zonecfg:testzone> create

zonecfg:testzone> set zonepath=/zones/testzone

zonecfg:testzone> set autoboot=true

zonecfg:testzone> info

zonename: testzone

zonepath: /zones/testzone

brand: native

autoboot: true

bootargs:

pool:

limitpriv:

scheduling-class:

ip-type: shared

inherit-pkg-dir:

        dir: /lib

inherit-pkg-dir:

        dir: /platform

inherit-pkg-dir:

        dir: /sbin

inherit-pkg-dir:

        dir: /usr

zonecfg:testzone> verify

zonecfg:testzone> commit

zonecfg:testzone>

bash-3.00# zoneadm list -cv

  ID NAME            STATUS    PATH                          BRAND    IP

  0 global          running    /                              native  shared

  - testzone        configured /zones/testzone                native  shared

bash-3.00#



bash-3.00# zoneadm -z testzone install

Preparing to install zone <testzone>.

Creating list of files to copy from the global zone.

Copying <2455> files to the zone.

Initializing zone product registry.

Determining zone package initialization order.

Preparing to initialize <1020> packages on the zone.

Initialized <1020> packages on zone.

Zone <testzone> is initialized.

The file </zones/testzone/root/var/sadm/system/logs/install_log> contains a log of the zone installation.

bash-3.00# zoneadm list -cv

  ID NAME            STATUS    PATH                          BRAND    IP

  0 global          running    /                              native  shared

  - testzone        installed  /zones/testzone                native  shared

bash-3.00# zoneadm -z testzone ready

bash-3.00# zoneadm list -cv

  ID NAME            STATUS    PATH                          BRAND    IP

  0 global          running    /                              native  shared

  1 testzone        ready      /zones/testzone                native  shared









bash-3.00# zoneadm -z testzone boot

bash-3.00# zlogin -C testzone

[Connected to zone 'testzone' console]

138/138









also encountered the following errors:



System identification is completed.



rebooting system due to change(s) in /etc/default/init





[NOTICE: Zone rebooting]





SunOS Release 5.10 Version Generic_120012-14 32-bit

Copyright 1983-2007 Sun Microsystems, Inc.  All rights reserved.

Use is subject to license terms.

Hostname: icey



icey console login: Apr  2 15:31:50 icey sendmail[8415]: My unqualified host name (localhost) unknown; sleeping for retry

Apr  2 15:32:50 icey sendmail[8415]: unable to qualify my own domain name (localhost) -- using short name

Apr  2 15:32:50 icey sendmail[8443]: My unqualified host name (localhost) unknown; sleeping for retry

Apr  2 15:32:50 icey sendmail[8444]: My unqualified host name (localhost) unknown; sleeping for retry

Apr  2 15:33:50 icey sendmail[8443]: unable to qualify my own domain name (localhost) -- using short name

Apr  2 15:33:50 icey sendmail[8444]: unable to qualify my own domain name (localhost) -- using short name

^C



icey console login: ^C

icey console login: ^C

icey console login: ~.

Password:

^C^CLogin incorrect

how can i "edit" my console login info?
how can i "exit" from the "console"?

note: i specified "icey" as the hostname, of course i gave a passwd, but upon login i don't know what's the user login. ..

my goal is to try installing/running solaris zones. .. and of course be familiar

Hi.

A zone is a lightweight virtual host. It's a largely independent OS sitting inside the main Solaris OS.

how can i "edit" my console login info?
Just the same as you normally would - useradd, passwd, and all that. The zone has its own copy of /etc, so it has its own login database in /etc/passwd

how can i "exit" from the "console"?
If you logged in with 'zlogin -C <zone>', then you can do: ~. to exit the connection. Hit return, then do ~. and you should get out. Be aware, though, that the same key sequence drops SSH connections too.

upon login i don't know what's the user login. ..
It's 'root' and whatever password you supplied at the first boot of the zone.

Dave

Quote:

Originally Posted by ilikejam (Post 3496027)

hi, thanks thanks :) i have tried it now :

bash# zoneadm -z testzone boot -- do i have to boot always before logging in?

# zlogin -C testzone
[connetcted to zone 'testzone' console]

icey console login : root
passwd: :)

icey login: ROOT LOGIN /dev/console

Sun Microsystems Inc. SunOS 5.10 Generic January 2005
#

#~.
[connection to zone 'testzone' console closed]

in my own understanding as per my zone trial. . a zone is a "virtual OS" inside your existing OS? is it like that?

Solaris containers and solaris zones are operating system level virtualization technologies, indeed.

I strongly suggest you google for it. Sun's BigAdmin website has many articles about the topic and I suggest you read the official zones documentation, too:
http://docs.sun.com/app/docs/doc/817-1592?l=en

Quote:

Originally Posted by crisostomo_enrico (Post 3502296)

whoa whoa . .. nice doc! thanks. . btw i am in the process of letting a friend of mine print a Solaris10 all in one book document in pdf. .. hoping to have in binded in the next months. . .

having a hard time of reading ebooks. .it tires my eyes. . . i prefer reading a book instead :)

The same thing happens to me: I cannot bear reading more than 2 pages on a monitor screen. Sun's documentation is pretty detailed and you might find it pretty "redundant": for every topic there is an introductory chapter, a task overview and then detailed steps. I usually examine the documentation first and then print only the relevant sections: two pages a sheet, double sided. You'll spare a good number of sheets and the environment will thank you, too, instead of printing the entire book.