1z0-821 Exam Dumps - Oracle Solaris Questions and Answers

Use the installadm set-criteria command to update the client criteria associated with an AI manifest that you already added to a service using installadm add-manifest.

Use the installadm add-manifest command to add a custom AI manifest to an install service.

The value of manifest is a full path and file name with .xml extension. The manifest file contains an AI manifest (installation instructions). The manifest file can also reference or embed an SC manifest (system configuration instructions).

The /var/adm/messages is the file to which all the messages printed on the console are logged to by the Operating System. This helps to track back check the console messages to troubleshoot any issues on the system.

Syslog daemon also writes to this /var/adm/messages file.

The /var/adm/messages file monitored and managed by newsyslog and its configuration file is /usr/lib/newsyslog.

This script runs as the roots cron job everyday, checks the /var/adm/messages file and copies/moves it to /var/adm/messages.0, 1, 2, 3, 4, 5, 6, 7. In other words, it does the Log Rotation for the /var/adm/messages.

In an event the /var file system is running out of space, these files needs to checked and can be removed (not the actual /var/adm/messages itself) to free up space on the file system.

However, care has to be taken, if you decide to empty the /var/adm/messages itself for any reason. This process is called Truncation.

SOLARIS SYSTEM ADMIN TIPS, /var/adm/messages

If you want to create a backup of an existing boot environment, for example, prior to modifying the original boot environment, you can use the beadm command to create and mount a new boot environment that is a clone of your active boot environment. This clone is listed as an alternate boot environment in the GRUB menu for x86 systems or in the boot menu for SPARC systems.

When you clone a boot environment by using the beadm create command, all supported zones in that boot environment are copied into the new boot environment.

How to Create a Boot Environment

1. Become the root role.

2. Create the boot environment.

# beadm create BeName

BeName is a variable for the name of the new boot environment. This new boot environment is inactive.

3. (Optional) Use the beadm mount command to mount the new boot environment.

# beadm mount BeName mount-point

Note: If the directory for the mount point does not exist, the beadm utility creates the directory, then mounts the boot environment on that directory.

If the boot environment is already mounted, the beadm mount command fails and does not remount the boot environment at the newly specified location.

4. (Optional) Activate the boot environment.

# beadm activate BeName

BeName is a variable for the name of the boot environment to be activated.

On reboot, the newly active boot environment is displayed as the default selection in the x86 GRUB menu or the SPARC boot menu.