Achieve Success in the Oracle 1z0-820 Exam: A Detailed Upgrade to Oracle Solaris 11 System Administrator Guide

A: The beadm utility includes support for creating and administering non-global zone boot environments.

Note: A boot environment is a bootable instance of the Oracle Solaris operating system image plus any other application software packages installed into that image. System administrators can maintain multiple boot environments on their systems, and each boot environment can have different software versions installed.

B: Role-based access control (RBAC) is a security feature for controlling user access to tasks that would normally be restricted to the root role. By applying security attributes to processes and to users, RBAC can divide up superuser capabilities among several administrators.

In this output, the statistics for interrupt (INTRS) are significant. Low interrupt numbers indicate greater efficiency in performance. If the interrupt numbers are high, then you might need to add more resources to the specific link.

Example:

# dlstat -r -i 1

LINK IPKTS RBYTES INTRS POLLS CH<10 CH10-50 CH>50

e1000g0 101.91K 32.86M 87.56K 14.35K 3.70K 205 5

nxge1 9.61M 14.47G 5.79M 3.82M 379.98K 85.66K 1.64K

vnic1 8 336 0 0 0 0 0

e1000g0 0 0 0 0 0 0 0

nxge1 82.13K 123.69M 50.00K 32.13K 3.17K 724 24

vnic1 0 0 0 0 0 0 0

Note: dlstat show-link [-r [-F] | -t] [-i interval] [-a] [-p] [ -o field[,...]] [-u R|K|M|G|T|P] [link]

Display statistics for a link.

-r

Display receive-side statistics only. Includes bytes and packets received, hardware and software drops, and so forth.

List of supported RX fields:

link

iusedby

ibytes

ipkts

intrs

polls

hdrops: hardware drops

sdrops: software drops (owing to bandwidth enforcement)

ch<10: number of packet chains of length < 10

ch10-50: number of packet chains of length between 10 and 50

ch>50: number of packet chains of length > 50

B: Due to change in package system (SRV4 to IPS) there is no direct upgrade from S10 to S11 one can use

* P2Vconverting s10 physical system to solaris10 branded zone in s11 (32-bit or 64-bit)

* V2V converting s10 native full root zone to solaris10 branded zone in s11 (B)

The prctl utility allows the examination and modification of the resource controls associated with an active process, task, or project on the system. It allows access to the basic and privileged limits and the current usage on the specified entity.

How to Change the zone.cpu-shares Value in a Zone Dynamically

This procedure can be used in the global zone or in a non-global zone.

• Be superuser, or have equivalent authorizations.

For more information about roles, see Configuring and Using RBAC (Task Map) in System Administration Guide: Security Services.

• Use the prctl command to specify a new value for cpu-shares.

# prctl -n zone.cpu-shares -r -v value -i zone zonename

idtype is either the zonename or the zoneid. value is the new value.

Note: project.cpu-shares

Number of CPU shares granted to a project for use with the fair share scheduler

Note the first line:

global core file pattern: /globalcore/core.%f.%p

The program name is bash

The runtime process ID is 2663

Note: By default, the global core dump is disabled. You need to use the coreadm command with the -e global option to enable it. The -g option causes the command to append the program name(%f) and the runtime process ID (%p) to the core file name.

A: Snapshots are created by using the zfs snapshot command, which takes as its only argument the name of the snapshot to create.

D: You can list snapshots as follows:

# zfs list -t snapshot

E: Snapshots are destroyed by using the zfs destroy command. For example:

# zfs destroy tank/home/ahrens@now