diff --git a/HowtoElasticsearch.md b/HowtoElasticsearch.md
index 4272d7c4..889a6a6f 100644
--- a/HowtoElasticsearch.md
+++ b/HowtoElasticsearch.md
@@ -343,15 +343,15 @@ Pour créer un snapshot toutes les heures, et en conserver 24 en permanence (not
 
 ~~~
 $ date=$(date +%H)
-$ curl -s -X DELETE "127.0.0.1:9200/_snapshot/snaprepo/h${date}" | grep -v acknowledged..true
+$ curl -s -X DELETE "127.0.0.1:9200/_snapshot/snaprepo/h${date}" | grep -v -Fx '{"acknowledged":true}'
 $ curl -s -X PUT "127.0.0.1:9200/_snapshot/snaprepo/h${date}?wait_for_completion=true" -o /tmp/es_snapshot_h${date}.log
 ~~~
 
 Plus classiquement pour avoir un snapshot par jour :
 
 ~~~
-$ date=$(date +%Y-%m-%d)
-$ curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot_${date}" | grep -v acknowledged..true
+$ date=$(date +%F)
+$ curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot_${date}" | grep -v -Fx '{"acknowledged":true}'
 $ curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot_${date}?wait_for_completion=true" -o /tmp/es_snapshot_${date}.log
 ~~~
 
@@ -363,6 +363,23 @@ $ for i in $(ls -1d snapshot-* | head -n -10 | sed s'/snapshot-snapshot_//g'); d
 hot_${i}"; done
 ~~~
 
+Dans le cas de snapshot pour un ElasticSearsch clusterisé :
+
+~~~
+# if ss | grep ':nfs' | grep -q 'ip\.add\.res\.s1' && ss | grep ':nfs' | grep -q 'ip\.add\.res\.s2'
+# then
+#     curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" -o /tmp/es_delete_snapshot.daily.log
+#     curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" -o /tmp/es_snapshot.daily.log
+# else
+#     echo 'Cannot make a snapshot of elasticsearch, at least one node is not mounting the repository.'
+# fi
+# for snapshot in $(curl -s -XGET "localhost:9200/_snapshot/snaprepo/_all?pretty=true" | grep -Eo 'snapshot_[0-9]{4}-[0-9]{2}-[0-9]{2}' | head -n -10); do
+#     curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/${snapshot}" | grep -v -Fx '{"acknowledged":true}'
+# done
+# date=$(date +%F)
+# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot_${date}?wait_for_completion=true" -o /tmp/es_snapshot_${date}.log
+~~~
+
 ### Restauration d'un snapshot
 
 Le snapshot doit être listé dans le snapshot repository.