When do you need a separate service/IO domain? Post: 303016470

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Operating Systems Solaris When do you need a separate service/IO domain? Post 303016470 by Peasant on Friday 27th of April 2018 10:24:51 AM

04-27-2018

Moderator

This is mostly used for monster servers such as t5-8 or t7-4, if at all.

Corner cases include regulatory/security demands, where such separation can enable you to run test and production on the same box and still be compliant

It is used for hardware separation, creating 2 (or more) servers (root/service domains) from existing hardware.
This increases the configuration complexity significantly.

For models you specify, depending on the requirements, a one root/service domain is enough for most use cases.
By creating a root/service domain, you are basically assigning a part of your box (one network card, one cpu socket + memory etc.) to serve ldoms independent of each other.

Since you have many servers in your environment, i see no need for having additional complexity of multiple service domains in one box.

Just stick to one naming policy - same vsw/vdsdev names everywhere, save your configs somewhere from all boxes and you are good to go.
Keep firmware and patch level of hypervisors on the same level.

Minimum guest ldom is solaris 10, in which you can create legacy zones if required.

Hope that helps
Regards
Peasant.

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LEARN ABOUT SUNOS

ypinit

ypinit(1M)						  System Administration Commands						ypinit(1M)

NAME

       ypinit - set up NIS client

SYNOPSIS

       /usr/sbin/ypinit [-c] [-m] [-s master_server]

DESCRIPTION

       ypinit  can be used to set up an  NIS client system.  You must be the superuser to run this command. This script need not be used at all if
       ypbind(1M) is started with the -broadcast option (it is invoked with this option from the svc:/network/nis/client:default service).

       Normally,  ypinit is run only once after installing the system. It may be run whenever a new NIS server is  added  to  the  network  or	an
       existing one is decommissioned.

       ypinit  prompts	for a list of NIS servers to bind the client to; this list should be ordered from the closest to the furthest server. Each
       of these NIS servers must be listed in either the /etc/hosts or the /etc/inet/ipnodes file along with its IP  address.  ypinit  stores  the
       list in file /var/yp/binding/domain/ypservers. This file is used by ypbind when run without the	-broadcast option.

OPTIONS

       -c		       Set up a ypclient system.

       -m		       Build a master ypserver data base.

       -s master_server        Slave  data  base.  master_server  must be the same master configured in the YP maps and returned by the ypwhich -m
			       command.

FILES

       /etc/hosts

       /etc/inet/ipnodes

       /var/yp/binding/domain/ypservers

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWnisu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       svcs(1), svcadm(1M), ypbind(1M), sysinfo(2), hosts(4), ipnodes(4), attributes(5), smf(5)

NOTES

       The NIS client service is managed by the service management facility, smf(5), under the service identifier:

       svc:/network/nis/client:default

       Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed  using  svcadm(1M).  The  ser-
       vice's status can be queried using the svcs(1) command.

BUGS

       ypinit  sets  up  the  list  of	NIS  servers only for the current domain on the system when it is run, that is, the domain returned by the
       SI_SRPC_DOMAIN command to sysinfo(2). Care should be taken to ensure that this is the same as the desired domain for NIS client processes.

SunOS 5.10							    13 Aug 2004 							ypinit(1M)