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Update important-settings.md

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aetter 2021-07-23 12:34:17 -07:00
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_opensearch/install/important-settings.md
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# Important settings
For production workloads, make sure the [Linux setting](https://www.kernel.org/doc/Documentation/sysctl/vm.txt) `vm.max_map_count` is set to at least 262144. On the OpenSearch Docker image, this setting is the default. To check, start a Bash session in the container and run:
For production workloads, make sure the [Linux setting](https://www.kernel.org/doc/Documentation/sysctl/vm.txt) `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:
```bash
cat /proc/sys/vm/max_map_count
```
To increase this value, you have to modify the Docker image. For other install types, add this setting to the host machine's `/etc/sysctl.conf` file with the following line:
To increase the value, add the following line to `/etc/sysctl.conf`:
```
vm.max_map_count=262144