diff --git a/opensearch-master/config.yaml b/opensearch-master/config.yaml
index 0f90ce3..c5d6075 100644
--- a/opensearch-master/config.yaml
+++ b/opensearch-master/config.yaml
@@ -7,6 +7,8 @@ arch:
   - aarch64
   - armv7
 init: false
+sysctls:
+  - vm.max_map_count=262144
 privileged:
   - SYS_ADMIN
   - SYS_RAWIO