Linux Administration & Maintenance: Difference between revisions
| Line 26: | Line 26: | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''ifconfig''' ''(verify we got an IP)'' | <font color=red>livecd</font> <font color=blue>root #</font> '''ifconfig''' ''(verify we got an IP)'' | ||
prepare for chrooting | prepare for chrooting | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''mount - | <font color=red>livecd</font> <font color=blue>root #</font> '''mount -o bind /proc /mnt/gentoo/proc''' | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''mount -o bind /dev /mnt/gentoo/dev''' | |||
<font color=red>livecd</font> <font color=blue>root #</font> '''mount -o bind /sys /mnt/gentoo/sys''' | |||
set up a new environment root | set up a new environment root | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''cd /mnt/gentoo''' | <font color=red>livecd</font> <font color=blue>root #</font> '''cd /mnt/gentoo''' | ||
| Line 38: | Line 40: | ||
<font color=red>/</font> <font color=blue>#</font> <font color=black>'''exit''' | <font color=red>/</font> <font color=blue>#</font> <font color=black>'''exit''' | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''cd /''' | <font color=red>livecd</font> <font color=blue>root #</font> '''cd /''' | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''umount /mnt/gentoo/boot /mnt/gentoo/proc /mnt/gentoo''' | <font color=red>livecd</font> <font color=blue>root #</font> '''umount /mnt/gentoo/boot /mnt/gentoo/proc /mnt/gentoo/dev /mnt/gentoo/sys /mnt/gentoo''' | ||
<font color=red>livecd</font> <font color=blue>root #</font> '''reboot''' | <font color=red>livecd</font> <font color=blue>root #</font> '''reboot''' | ||
Revision as of 23:23, 26 August 2005
Gentoo
On-Campus, we can speed installation/updates by using a local source; in your /etc/make.conf:
GENTOO_MIRRORS="http://mirror.iat.sfu.ca/gentoo/"
An alternative is to use an NFS mount, but if NFS breaks or is unavailable... :-(
Robin: "For best performance, I recommend mounting
musashi.iat.sfu.ca:/export/gentoo/distfiles on /mnt/distfiles
and specifying that in your make.conf. The NFS route ensures that downloaded files go back into the mirror."
- TODO: Find other documents about how to maintain a Gentoo machine, primarily for Gordon and Mark.
- TODO: Custom gentoo configuration stuff that we use
LDAP
Emerge pam_ldap and nss_ldap autofs
Rescuing a Gentoo System
boot from a CD, typically
boot: gentoo
enable swap
livecd root # swapon /dev/sda2
mount the main (root) partition, optionally the boot partition
livecd root # mount /dev/sda3 /mnt/gentoo livecd root # mount /dev/sda1 /mnt/gentoo/boot
get some networking going
livecd root # dhcpcd & livecd root # ifconfig eth0 up livecd root # ifconfig (verify we got an IP)
prepare for chrooting
livecd root # mount -o bind /proc /mnt/gentoo/proc livecd root # mount -o bind /dev /mnt/gentoo/dev livecd root # mount -o bind /sys /mnt/gentoo/sys
set up a new environment root
livecd root # cd /mnt/gentoo livecd gentoo # chroot /mnt/gentoo /bin/bash livecd / # env-update livecd / # source /etc/profile
Now, do your rescue work. Good luck!
To back out of the chroot, and check your fix(es)
/ # exit livecd root # cd / livecd root # umount /mnt/gentoo/boot /mnt/gentoo/proc /mnt/gentoo/dev /mnt/gentoo/sys /mnt/gentoo livecd root # reboot
SUSE
On-Campus, we can speed installation/updates by using a local source:
nfs://export/mirror/suse
- TODO: Instructions for install with LDAP working
- TODO: Instructions for auto-update configuration
RedHat/Fedora
- TODO: Instructions for install with LDAP working
FreeBSD
- TODO: Instructions on configuring the firewall on Dreadnought