Creating OpenSolaris CLI JeOS RNJS by Uninstall
Úterý V 13, 2008
Note: Because in Amazon EC2 we can't update Kernel and Ramdisk plus OpenSolaris store ZFS pool configuration in Ramdisk in form of ZFS cache you will not be able at least for now to upload your images. You need to use our preprepared JeOS image:
This entry is part of 'OpenSolaris on Amazon EC2' workshop1. Boot into right OpenSolaris image
2. Generate list of all installed packages
pkg list -s >/install.lst And make diff with CLIinst file as 'remove.lst'
3. Apply workaround for system files
Workaround: Uninstalling slim_cd cluster will remove /etc/passwd and /etc/shadow, even when they belong also into SUNWcs
cat allfiles.lst | grep slim_cd slim_cd etc/X11/gdm/custom.conf slim_cd etc/pam.conf slim_cd etc/passwd slim_cd etc/shadow slim_cd etc/user_attr cat allfiles.lst | grep etc/passwd SUNWcs etc/passwd slim_cd etc/passwd cp /etc/pam.conf /etc/pam.conf.bck cp /etc/passwd /etc/passwd.bck cp /etc/shadow /etc/shadow.bck cp /etc/user_attr /etc/user_attr.bck
3. Remove ZFS snapshots from install time
zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 2.57G 6.04G 55K /rpool rpool@install 16K - 55K - rpool/ROOT 2.57G 6.04G 18K /rpool/ROOT rpool/ROOT@install 0 - 18K - rpool/ROOT/opensolaris 2.57G 6.04G 2.50G legacy rpool/ROOT/opensolaris@install 59.4M - 2.48G - rpool/ROOT/opensolaris/opt 12.8M 6.04G 12.8M /opt rpool/ROOT/opensolaris/opt@install 49K - 3.61M - rpool/export 72K 6.04G 19K /export rpool/export@install 15K - 19K - rpool/export/home 38K 6.04G 18K /export/home rpool/export/home@install 20K - 21K - zfs destroy rpool@install zfs destroy rpool/ROOT@install zfs destroy rpool/ROOT/opensolaris@install zfs destroy rpool/ROOT/opensolaris/opt@install zfs destroy rpool/export@install zfs destroy rpool/export/home@install
4. Switch to single mode (Permanently)
svcadm milestone -d milestone/single-user:default
5. Uninstall packages using remove.lst
cat /remove.lst | awk '{ print $1 }' | xargs pkg uninstall
6. Clean unnecessary config files
rm -f -r /var/pkg/lost+found/
7. Check resulted size
zfs list NAME USED AVAIL REFER MOUNTPOINT rpool 635M 7.99G 55K /rpool rpool/ROOT 634M 7.99G 18K /rpool/ROOT rpool/ROOT/opensolaris 634M 7.99G 622M legacy rpool/ROOT/opensolaris/opt 12.7M 7.99G 12.7M /opt rpool/export 37K 7.99G 19K /export rpool/export/home 18K 7.99G 18K /export/home
8. Fix system files in /etc/*
cp /etc/pam.conf.bck /etc/pam.conf cp /etc/passwd.bck /etc/passwd cp /etc/shadow.bck /etc/shadow cp /etc/user_attr.bck /etc/user_attr
9. Check installed packages
pkg list -s | wc -l
112
pkg verify | egrep "pkg:|depend:"
10. Check services on reboot
init 6
svcs -xv
None listed
Switch to user level
svcadm milestone -d all
svcs -xv
You will see bunch of GUI related services in maintenace mode like font cache and so on, disable them
svcadm disable {service FMRI }
Make clean reboot with
init 6
11. You are done, backup me
PS: In some case you will like to create back ZFS install snapshots, so use:
zfs snapshot rpool@install zfs snapshot rpool/ROOT@install zfs snapshot rpool/ROOT/opensolaris@install zfs snapshot rpool/ROOT/opensolaris/opt@install zfs snapshot rpool/export@install zfs snapshot rpool/export/home@install
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