Update restore-ceph-from-mon-disaster.rst

web/support/kb/ceph/restore-ceph-from-mon-disaster.rst

@@ -35,6 +35,31 @@ On the juju client machine, rebuild old mon map using existing OSDs with the fol
 .. doc:: ../../images/restore-osd.sh>
 
 
+script::
+
+   ms=./mon-store
+   rm -rf $ms
+   mkdir $ms
+
+   hosts=`juju status ceph-osd | grep 'ceph-osd/' | awk '{print $1}' | cut -d'*' -f1`
+
+   # collect the cluster map from stopped OSDs
+   for host in $hosts; do
+      echo $host
+      juju ssh $host sudo rm -rf /tmp/$ms
+      juju scp -- -r $ms $host:/tmp
+      juju ssh $host sudo bash <<EOF
+        for osd in /var/lib/ceph/osd/ceph-*; do
+           ceph-objectstore-tool  --data-path \$osd --no-mon-config --op update-mon-db --mon-store-path /tmp/$ms
+        done
+        chmod -R +r /tmp/$ms
+   EOF
+      rm -rf $ms
+      juju scp -- -r $host:/tmp/$ms .
+   done
+
+
+
 keyring creation
 -----------------