1 files changed, 114 insertions, 0 deletions
diff --git a/deploy/adapters/cobbler/snippets/keep_ssh_host_keys b/deploy/adapters/cobbler/snippets/keep_ssh_host_keys
new file mode 100644
index 00000000..eb0a43eb
--- /dev/null
+++ b/deploy/adapters/cobbler/snippets/keep_ssh_host_keys
@@ -0,0 +1,114 @@
+#raw
+# Nifty trick to restore keys without using a nochroot %post
+
+echo "Saving keys..." > /dev/ttyS0
+
+SEARCHDIR=/etc/ssh
+TEMPDIR=ssh
+PATTERN=ssh_host_
+
+keys_found=no
+# /var could be a separate partition
+SHORTDIR=${SEARCHDIR#/var}
+if [ $SHORTDIR = $SEARCHDIR ]; then
+	SHORTDIR=''
+fi	
+insmod /lib/jbd.o
+insmod /lib/ext3.o
+
+mkdir -p /tmp/$TEMPDIR
+
+
+function findkeys
+{
+ for disk in $DISKS; do
+    name=$(basename $disk)
+    tmpdir=$(mktemp -d $name.XXXXXX)
+    mkdir -p /tmp/$tmpdir
+    mount $disk /tmp/$tmpdir
+    if [ $? -ne 0 ]; then # Skip to the next partition if the mount fails
+      rm -rf /tmp/$tmpdir                                                
+      continue                                                           
+    fi                                                                   
+    # Copy current host keys out to be reused
+    if [ -d /tmp/$tmpdir$SEARCHDIR ] &&  cp -a /tmp/$tmpdir$SEARCHDIR/${PATTERN}* /tmp/$TEMPDIR; then 
+        keys_found="yes"
+	umount /tmp/$tmpdir
+	rm -r /tmp/$tmpdir
+	break
+    elif [ -n "$SHORTDIR" ] && [ -d /tmp/$tmpdir$SHORTDIR ] && cp -a /tmp/$tmpdir$SHORTDIR/${PATTERN}* /tmp/$TEMPDIR; then 
+	keys_found="yes"
+        umount /tmp/$tmpdir
+	rm -r /tmp/$tmpdir
+        break
+    fi
+    umount /tmp/$tmpdir
+    rm -r /tmp/$tmpdir
+ done
+}
+
+DISKS=$(awk '{if ($NF ~ "^[a-zA-Z].*[0-9]$" && $NF !~ "c[0-9]+d[0-9]+$" && $NF !~ "^loop.*") print "/dev/"$NF}'  /proc/partitions)
+# In the awk line above we want to make list of partitions, but not devices/controllers
+# cciss raid controllers have partitions like /dev/cciss/cNdMpL, where N,M,L - some digits, we want to make sure 'pL' is there
+# No need to scan loopback niether.
+# Try to find the keys on ordinary partitions
+
+findkeys
+
+# Try software RAID
+if [ "$keys_found" = "no" ]; then
+  if mdadm -As; then
+      DISKS=$(awk '/md/{print "/dev/"$1}' /proc/mdstat)
+      findkeys
+      # unmount and deactivate all md 
+      for md in $DISKS ; do
+          umount $md
+          mdadm -S $md
+      done
+  fi
+fi
+
+
+# Try LVM if that didn't work
+if [ "$keys_found" = "no" ]; then
+    lvm lvmdiskscan
+    vgs=$(lvm vgs | tail -n +2 | awk '{ print $1 }')
+    for vg in $vgs; do
+        # Activate any VG we found
+        lvm vgchange -ay $vg
+    done
+    
+    DISKS=$(lvm lvs | tail -n +2 | awk '{ print "/dev/" $2 "/" $1 }')
+    findkeys    
+
+    # And clean up..
+    for vg in $vgs; do
+        lvm vgchange -an $vg
+    done
+fi
+
+# Loop until the corresponding rpm is installed
+if [ "$keys_found" = "yes" ]; then
+    if [ "$PATTERN" = "ssh_host_" ]; then
+        while : ; do
+        sleep 10
+        if [ -f /etc/ssh/ssh_host_key ] ; then
+          cp -af /tmp/$TEMPDIR/${PATTERN}* $SEARCHDIR
+          break
+        fi
+        done 1>/dev/null 2>/dev/null &
+    fi
+    while : ; do
+        sleep 10
+        if [ -d /mnt/sysimage$SEARCHDIR ] ; then
+            cp -af /tmp/$TEMPDIR/${PATTERN}* /mnt/sysimage$SEARCHDIR
+            if [ -e "/sbin/restorecon"]; then
+                /sbin/restorecon -r /etc/ssh
+            fi
+            logger "keys copied to newly installed system"
+            break
+        fi
+    done 1>/dev/null 2>/dev/null &
+fi
+#end raw
+