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Operating Systems Solaris Reboot of Unix servers - recommended? Post 302104714 by Create on Friday 26th of January 2007 07:44:32 PM
Old 01-26-2007
Quote:
Originally Posted by Tornado
Thats what change control is for. If you are maintaining servers in a 24x7 enviroment you need proper change control, even if its not a 24x7 enviroment you should have something in place to track changes. There is no need to have a scheduled reboot. I bet everyone that recomends scheduled reboots has a linux background or has not maintained any 24x7 mission critical servers. Places like Banks, Telcos, Airports and large corporates require 5 9's availability(99.999% uptime).

If you don't have change control and you have a sysadmin in the team that is a cowboy and changes things without documenting them then your solution isn't a scheduled reboot(Sun Solaris doesn't need it). Your work practices need to change to include proper change control and system monitoring to make sure sysadmins are not making changes on the fly without following the change control proccess.

I have maintained servers with uptime over a couple of years that have rebooted fine.
+1.


We never reboot a server just to "reboot" it. Servers are only bounced if they need to be for certain service packs etc. etc. An example would be tonight I am rebooting 12 servers that have been up well over a year to update IDS (Intrusion Detection System) software that our IDC is requiring us to do.
 

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root_archive(1M)														  root_archive(1M)

NAME
root_archive - manage bootable miniroot archives SYNOPSIS
/boot/solaris/bin/root_archive pack archive root /boot/solaris/bin/root_archive unpack archive root /boot/solaris/bin/root_archive packmedia solaris_image root /boot/solaris/bin/root_archive unpackmedia solaris_image root The root_archive utility is used to manage bootable miniroot archives and is currently only available on platforms. The utility can pack and unpack boot/root archives in both ufs and hsfs (iso9660) format. It will always generate ufs archives. root_archive also uses the lofi file driver to export a file as a block device (see lofi(7D)) and mount to mount or unmount file systems and remote resources (see mount(1M)). root_archive requires the same privileges that are needed to run these commands. SUBCOMMANDS
The root_archive command has the following subcommands: pack archive root Pack from the image found under the root directory to the archive. unpack archive root Unpack from the archive to an unpacked image under the root directory. packmedia solaris_image root Pack the solaris image to the root directory. unpackmedia solaris_image root Unpack the solaris image from the root directory. For packmedia and unpackmedia, other items that do not go into the ramdisk image are copied or uncopied (see cpio(1)) as well. Specifi- cally, this includes all the packaging databases needed for pkgadd and the other packaging utilities to succeed which are not used in the running and hence pruned to conserve memory. EXAMPLES
Example 1: Unpacking the Solaris x86 install image The following command unpacks the current Solaris image from the root directory: # root_archive unpackmedia /export/nv/solarisdvd.nvx_dvd/latest /export/Boot Where /export/nv/solarisdvd.nvx_dvd/latest represents a path to a Solaris x86 install image and /export/Boot is a directory that will be purged or created, as necessary. Example 2: Packing the Solaris x86 install image The following command packs the current Solaris image to the root directory: # root_archive packmedia /export/nv/solarisdvd.nvx_dvd/latest /export/Boot The following exit values are returned: 0 The command completed successfully. 1 The command exited due to an error. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ cpio(1), bootadm(1M), mount(1M), attributes(5), lofi(7D) 26 Sep 2005 root_archive(1M)
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