another one bit the dust

emergency/restore_mons_from_osds.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+#from: https://docs.ceph.com/docs/nautilus/rados/troubleshooting/troubleshooting-mon/?highlight=trouble%20monitor#recovery-using-osds
+
+
+ms=/tmp/mon-store
+mkdir $ms
+hosts="ebin02 ebin01"
+# collect the cluster map from OSDs
+for host in $hosts; do
+  rsync -avz $ms/. $host:$ms.remote
+  rm -rf $ms
+  ssh $host <<EOF
+    for osd in /var/lib/ceph/osd/ceph-*; do
+      ceph-objectstore-tool --data-path \$osd --op update-mon-db --no-mon-config --mon-store-path $ms.remote
+    done
+EOF
+  rsync -avz $host:$ms.remote/. $ms
+done