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Add disclaimer about remote fs usage and an example of setting env var #1644

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Oct 21, 2022
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Add disclaimer about remote fs usage and an example of setting env var #1644

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Add disclaimer about remote fs usage and an example of setting env var
Oct 21, 2022
90a7d10
Enhanced wording a little bit
Oct 21, 2022
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8 changes: 7 additions & 1 deletion _opensearch/install/compatibility.md
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Expand Up @@ -9,6 +9,9 @@ nav_order: 2

We recommend installing OpenSearch on Red Hat Enterprise Linux (RHEL) or Debian-based Linux distributions that use [systemd](https://en.wikipedia.org/wiki/Systemd), such as CentOS, Amazon Linux 2, and Ubuntu Long-Term Support (LTS). OpenSearch should work on most Linux distributions, but we only test a handful. We recommend RHEL 7 or 8, CentOS 7 or 8, Amazon Linux 2, Ubuntu 16.04, 18.04, or 20.04 for any version of OpenSearch.

Avoid using a network file system for node storage in a production workflow. Using a network file system for node storage can cause performance issues in your cluster due to factors such as network conditions (like latency or limited throughput) or read/write speeds. You should use solid-state drives (SSDs) installed on the host for node storage where possible.
{: .note}

# Java compatibility

The OpenSearch distribution for Linux ships with a compatible [Adoptium JDK](https://adoptium.net/) version of Java in the `jdk` directory. To find the JDK version, run `./jdk/bin/java -version`. For example, the OpenSearch 1.0.0 tarball ships with Java 15.0.1+9 (non-LTS), OpenSearch 1.3.0 ships with Java 11.0.14.1+1 (LTS), and OpenSearch 2.0.0 ships with Java 17.0.2+8 (LTS). OpenSearch is tested with all compatible Java versions.
Expand All @@ -19,4 +22,7 @@ OpenSearch Version | Compatible Java Versions | Bundled Java Version
1.3.x | 8, 11, 14 | 11.0.14.1+1
2.0.0 | 11, 17 | 17.0.2+8

To use a different Java installation, set the `OPENSEARCH_JAVA_HOME` or `JAVA_HOME` environment variable to the Java install location.
To use a different Java installation, set the `OPENSEARCH_JAVA_HOME` or `JAVA_HOME` environment variable to the Java install location. For example:
```bash
export OPENSEARCH_JAVA_HOME=/path/to/opensearch-{{site.opensearch_version}}/jdk
```