Post installation tasks

Post installation tasks#

After installing nJAMS Server, please check for the following post installation tasks.

Keep OpenJDK up to date#

nJAMS Server comes with OpenJDK 11. Since there may be inmportant updates of OpenJDK 11 after the release of nJAMS Server, we recommend to always keep the Java installation up to date. Please enter https://openjdk.java.net/ and check for important hotfixes of OpenJDK 11.

Caution

In particular, please make sure nJAMS Server runs OpenJDK 11.0.3 or higher. Previous releases of OpenJDK 11 have a possible race condition in TLS 1.3 session resumption, which may cause issues when using SSL connection to Elasticsearch.

Update OpenJDK 11 as follows:

  1. Stop nJAMS instance, e.g. run stopAll.sh

  2. Update OpenJDK by replacing existing jre with new jre, e.g. rename <njams-installation>/jre to <njams-installation>/jre.old and copy new OpenJDK to <njams-installation>/jre.

  3. Start nJAMS instance, e.g. run startAll.sh