Important settings
For production workloads, make sure the Linux setting vm.max_map_count
is set to at least 262144. Even if you use the Docker image, set this value on the host machine. To check the current value, run this command:
cat /proc/sys/vm/max_map_count
To increase the value, add the following line to /etc/sysctl.conf
:
vm.max_map_count=262144
Then run sudo sysctl -p
to reload.
The sample docker-compose.yml file also contains several key settings:
bootstrap.memory_lock=true
Disables swapping (along with
memlock
). Swapping can dramatically decrease performance and stability, so you should ensure it is disabled on production clusters.OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m
Sets the size of the Java heap (we recommend half of system RAM).
nofile 65536
Sets a limit of 65536 open files for the OpenSearch user.
port 9600
Allows you to access Performance Analyzer on port 9600.
Network requirements
The following ports need to be open for OpenSearch components.
Port number | OpenSearch component |
---|---|
443 | OpenSearch Dashboards in AWS OpenSearch Service with encryption in transit (TLS) |
5601 | OpenSearch Dashboards |
9200 | OpenSearch REST API |
9250 | Cross-cluster search |
9300 | Node communication and transport |
9600 | Performance Analyzer |