diff --git a/sonarqube/content.md b/sonarqube/content.md
index f85e24f34..df9b14278 100644
--- a/sonarqube/content.md
+++ b/sonarqube/content.md
@@ -30,12 +30,29 @@ $ mvn sonar:sonar -Dsonar.host.url=http://$(boot2docker ip):9000
 
 To analyze other kinds of projects and for more details see [Analyzing Source Code documentation](https://redirect.sonarsource.com/doc/analyzing-source-code.html).
 
+## Requirements
+
+Because SonarQube uses an embedded Elasticsearch, make sure that the Docker host configuration complies with the [Elasticsearch production mode requirements](https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html#docker-cli-run-prod-mode) and [File Descriptors configuration](https://www.elastic.co/guide/en/elasticsearch/reference/current/file-descriptors.html).
+
+For example, on Linux, you can set the recommended values for the current session by running the following commands as root on the host:
+
+```console
+sysctl -w vm.max_map_count=262144
+sysctl -w fs.file-max=65536
+ulimit -n 65536
+ulimit -u 4096
+```
+
 ## Advanced configuration
 
-### Option 1: Database configuration
+### Database configuration
 
 By default, the image will use an embedded H2 database that is not suited for production.
 
+> Warning: Only a single instance of SonarQube can connect to a database schema. If you're using a Docker Swarm or Kubernetes, make sure that multiple SonarQube instances are never running on the same database schema simultaneously. This will cause SonarQube to behave unpredictably and data will be corrupted. There is no safeguard until [SONAR-10362](https://jira.sonarsource.com/browse/SONAR-10362).
+
+### Option 1: Use parameters via Docker environment variables
+
 The production database is configured with the following SonarQube properties used as environment variables: `sonar.jdbc.username`, `sonar.jdbc.password` and `sonar.jdbc.url`.
 
 ```console
@@ -51,11 +68,9 @@ Use of the environment variables `SONARQUBE_JDBC_USERNAME`, `SONARQUBE_JDBC_PASS
 
 More recipes can be found [here](https://github.com/SonarSource/docker-sonarqube/blob/master/recipes.md).
 
-### Option 2: Use parameters via Docker environment variables
-
 You can pass `sonar.` configuration properties as Docker environment variables, as demonstrated in the example above for database configuration.
 
-### Option 3: Use bind-mounted persistent volumes
+### Option 2: Use bind-mounted persistent volumes
 
 The images contain the SonarQube installation at `/opt/sonarqube`. You can use bind-mounted persistent volumes to override selected files or directories, for example:
 
@@ -76,7 +91,7 @@ $ docker run -d --name sonarqube \
     sonarqube
 ```
 
-### Option 4: Customized image
+### Option 3: Customized image
 
 In some environments, it may make more sense to prepare a custom image containing your configuration. A `Dockerfile` to achieve this may be as simple as: