Date: Wed, 1 Nov 2006 11:53:10 -0000 From: "SiteRollout.com" <info@siterollout.com> To: "'Roland Smith'" <rsmith@xs4all.nl> Cc: freebsd-stable@freebsd.org Subject: RE: Three FreeBSD 6 questions Message-ID: <00fe01c6fdac$4dfcc050$0200a8c0@pc1> In-Reply-To: <20061026152612.GA22501@slackbox.xs4all.nl>
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Many thanks for all the replies guys. I used the following method pasted below remotely without having to boot up in single user mode and it worked fine to upgrade from 6.0 to 6.1/6.2, so I'm sharing with all in case anyone needs to do the same. However I want to downgrade from 6.2 PRERELEASE to 6.1 as I'm getting this message on one server: This system is running FreeBSD 6.2-PRERELEASE. FreeBSD Update is only designed to track FreeBSD Security and Errata branches and cannot update this system 1.) Do I need to downgrade to get the latest security updates? 2.) Can I "rm -fr /usr/src/" to delete everything and pull the latest files via cvsup again to perform a clean install of 6.0 STABLE(which is currently 6.1) ###################################################### =============================== Remote server system upgrade: =============================== Edit cvsupfile # nano /etc/cvsupfile *default host=cvsup2.FreeBSD.org *default base=/usr *default prefix=/usr *default release=cvs *default tag=none *default delete use-rel-suffix *default tag=RELENG_6 src-all ports-all doc-all # cvsup -g -L2 /etc/cvsupfile # make buildworld Now edit a custom kernel if you need to make specific changes # uname -a FreeBSD server9.site-rollout.co.uk 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Nov 5 04:19:18 UTC 2004 root@harlow.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 # cd /usr/src/sys/i386/conf # cp GENERIC FOOBAR # cd /usr/src/ # make buildkernel KERNCONF=FOOBAR # make installkernel KERNCONF=FOOBAR Lets backup your existing /etc directory just incase something goes wrong. # cp -Rp /etc /home/backupetc # mergemaster -p Add following entry to /etc/groups if it doesn't exist audit:*:77: # make installworld Now all of the system userland will be installed. This will take 5-10 mins or less. Once the system userland has been installed you need to do the most important step and also most confusing at times. You need to run 'mergemaster' # mergemaster You will see the mergemaster application start comparing your existing /etc directory config files and passwd and group files and other files and it will start prompting you if you want to either install the files or delete them or merge them. For the majority of the files you can just tell them to safely install. DO NOT EVER INSTALL A NEW master.passwd, passwd or group files. You also be careful about replacing the /etc/mail/aliases and /etc/rc.firewall firewall file if you have a custom IPFW firewall created. If you do you will lock yourself out. If you do happen to install a new password file you will need copy back your old one from the backup you just made. % At prompt asking you what you to do or showing you part of a file. Press 'q' and then 'i' to install the file or 'd' to delete it. Just select 'q' and then 'i' for the most of them except the files I mentioned above or any other files you have edited with custom entries for your system. You will then be prompted to build the new device tree if you installed the MAKEDEV during mergemaster ( you should have ) select 'y' and let it build. It will then maybe ask you to rebuild the 'aliases' file. Select 'y' After that it will ask you if you want to delete the temp root directory. Select 'y'. You now have a updated system and need to reboot. Be sure to reboot shortly or it will cause possbile problems if you do this from a remote host. # shutdown -r +1 The system will reboot and you can login and startup any services that you need to. If the system does not come back up and you have tried installing a firewall have a technician look at the local console and tell them to soft reboot the server with 'ctrl + alt + del'. When he system is booting up you can tell it you want load a custom kernel by pressing any key other then 'enter' when prompted. Then you type. % unload % boot kernel.GENERIC or % boot kernel.old % boot kernel.prev This depends on what your old kernel file was called most systems will have a kernel.GENERIC on them unless you removed it. That will get the system backup and you can fix any errors with the firewall. Finally, delete any unwanted files in /user/ ######################################################
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