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Homework and Emergencies Emergency UNIX and Linux Support Different OS Kernel Update Frequency Post 302566501 by galanom on Thursday 20th of October 2011 12:52:37 PM
Old 10-20-2011
Quote:
Originally Posted by majid.merkava
Hi guys

I'm trying to configure a collaboration suit (PHP, PostgreSQL, Apache) plus a mail server(Sendmail and Dovecot) on a single box. It will be used heavily 24*7. So having a long up time is really needed. I'm looking for 3 to 6 month up time. I want to know about kernel update frequency(because they are causing server reboot) for different operating systems such as Linux(CentOS, Debian, Ubuntu Server Edition), FreeBSD NetBSD, OpenBSD.

Could anyone help? I'm not trying to make a Linux vs BSD question as it is against forum rules.
First of all, I quite agree with the cluster idea.
If it is really of the question, put whatever distro you want and simple DON'T update kernel. You are not forced to apply each update of the distro. Actually in a production machine, you don't update at all, at least not automatically. If for example the "automatic" update request new version of apache, your machine will have a small down time. If problems with the new configuration files arise, then it will be big down time.

Don't update anything.
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HOME(8) 						      System Manager's Manual							   HOME(8)

NAME
home, 40meg, 80meg, personalize, update, Disclabel - administration for local file systems SYNOPSIS
gnot/home gnot/personalize gnot/update magnum/home magnum/personalize magnum/update pc/40meg pc/80meg pc/personalize pc/update nextstation/home nextstation/update DESCRIPTION
These programs help maintain a file system on a local disk for a private machine. Home partitions a disk, copies the appropriate kernel to the disk, and makes a new file system on the disk. To do this, it overwrites the vendor-supplied software on the disk with a copy of Plan 9. 40meg, 80meg, and 100meg configure disks and make file systems for disks of the appropriate size. Update copies the current kernel to the disk and updates files on the local file system. It only updates those files put there by the home program. Personalize removes the contents of the /usr directory on the local disk and copies a minimal set of files for the user who runs the com- mand. The file /rc/bin/nextstation/Disclabel, despite its name, is not an rc(1) script. It contains the second stage bootstrap program for Nextstations booting from local disk. Before booting a Plan 9 Nextstation from disk, it should be installed in the partition /dev/hd1label; this is normally done by nexstation/home. FILES
/lib/proto/portproto Mkfs prototype files for magnum/home, magnum/update, gnot/home, and gnot/update. /lib/proto/386proto Mkfs prototype files for pc/40meg, pc/80meg, and pc/update. SOURCE
/rc/bin/gnot/* /rc/bin/magnum/* /rc/bin/pc/* /rc/bin/nextstation/* SEE ALSO
kfs(4), mkfs(8), prep(8), wren(3) ``Installing the Plan 9 Distribution''. HOME(8)
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