From: Jeff Schroeder <jeffschroeder(a)computer.org>
The original idea is from Garrick Staples @ USC. My implementation is
designed to work on crazy raid controllers like in HP servers that show
/dev/cciss/c0d0 or normal servers that show /dev/sda. This assumes that
the list-harddrives command is available. It is part of anaconda and
might not be available on SUSE or other non Redhat based distributions.
Signed-off-by: Jeff Schroeder <jeffschroeder(a)computer.org>
---
snippets/keep_ssh_host_keys | 44 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 44 insertions(+), 0 deletions(-)
create mode 100644 snippets/keep_ssh_host_keys
diff --git a/snippets/keep_ssh_host_keys b/snippets/keep_ssh_host_keys
new file mode 100644
index 0000000..93a6fad
--- /dev/null
+++ b/snippets/keep_ssh_host_keys
@@ -0,0 +1,44 @@
+#raw
+# Nifty trick to restore ssh keys without using a nochroot %post
+
+echo "Saving ssh host keys..." > /dev/ttyS0
+
+keys_found=no
+
+insmod /lib/jbd.o
+insmod /lib/ext3.o
+
+drives=$(list-harddrives | awk '{print $1}')
+for disk in $drives; do
+ DISKS="$DISKS $(fdisk -l /dev/$disk | awk '/^\/dev/{print $1}')"
+done
+
+for disk in $DISKS; do
+ name=$(basename $disk)
+ mkdir -p /tmp/$name /tmp/ssh
+ mount $disk /tmp/$name
+ [ $? -eq 0 ] || continue # Skip to the next partition if the mount fails
+
+ # Copy current ssh host keys out to be reused
+ if [ -d /tmp/${name}/etc/ssh ]; then
+ cp -a /tmp/${name}/etc/ssh/ssh_host* /tmp/ssh
+ keys_found="yes"
+ umount /tmp/$name
+ break
+ fi
+ umount /tmp/$name
+ rm -r /tmp/$name
+done
+
+# Loop until the ssh rpm is installed
+if [ "$keys_found" = "yes" ]; then
+ while : ; do
+ sleep 10
+ if [ -d /mnt/sysimage/etc/ssh ] ; then
+ cp -f /tmp/ssh/ssh_host* /mnt/sysimage/etc/ssh/
+ logger "SSH-HOST-KEY copied to newly installed system"
+ break
+ fi
+ done &
+fi
+#end
--
1.5.4.3