Java Application Server Configuration

To perform the necessary configurations, press the Config button next to your application server. In the case you have several application servers you can configure them together or separately. To do this follow the steps:

1. Open the drop-down menu at the top of the configuration tab. It includes the list of all of the app servers in your environment.

2. Choose the one you need and make the configurations.

3. To apply the changes:

• only for the chosen server - click Save only for current instance button from drop-down menu
• for all the servers - click Save

Below you will see the list of the configuration files available for editing in the Java application servers:

• Tomcat
• TomEE
• GlassFish
• Jetty

To get more information on which settings can be changed in the provided config folders, use the appropriate descriptions:

• server
• home
• webapps/work
• JAVA_HOME
• lib
• cron
• keys
• contexts
• server_lib
• apps

SERVER

The main Java servlet container configurations are performed in the files, located in the server folder.

Using the following config files, you can perform the actions listed below (these are just some examples):

• context.xml - configure session replication via Memcached
• web.xml - configure remote access via WebDav
• server.xml - enable Multiple Domains
• variables.conf
  • configure memory settings for your java containers by stating your custom GC, -Xmx, -Xms parameters (use standard parameters stating each at the new line):

  1 2	-Xmx< size >m -Xms< size >m

  • set your custom system properties for your Tomcat, TomEE, Jetty or GlassFish:

  1 2	-Dvar1=value1 -Dvar2=value2 -Dmy.var3=/my/value

  • configure JavaAgent interceptor
  • enable remote debugging:

  1 2	-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address={port_number}

Back to the list

HOME

If you need to use any custom files/folders for configuring your application you can download/create them in the home directory which is used as a storage in your Java server.

As a result you can make configurations specifying the path to your downloaded/created files in the variables.conf file (server folder).

Back to the list

WEBAPPS / WORK

The webapps (for Tomcat/TomEE) and work (for Jetty) folders are used for storing the unpacked application deployed to the environment.

Back to the list

JAVA_HOME

The JAVA_HOME folder contains the java config files and libs. Here, you can edit java settings and upload additional java libraries.

Back to the list

LIB

The lib folder is used for storing default and uploading custom jar libraries.

Back to the list

CRON

App servers include a cron folder with the config file, where cronjobs can be configured.

Detailed information on Cronjob configuration can be found in the Setting Up a Cronjob document.

Back to the list

KEYS

The keys directory is used as a location for uploading any private key which is needed for your application. Generate the key, save it as a simple file and upload to the key folder.

It can be used for different cases by simply stating the path to your key:

1

/var/lib/jelastic/keys/{key_file_name}

Back to the list

CONTEXTS

The contexts folder contains XML config files for each deployed context. All of these files are open for editing.

Back to the list

SERVER_LIB

The server_lib folder is the GlassFish config directory with all available server libraries.

Back to the list

APPS

The apps TomEE folder is used for storing the unpacked EE application deployed to the environment.

Back to the list

Tomcat

Back to the list

TomEE

Back to the list

GlassFish

Back to the list

Jetty

Back to the list

What’s next?

• Tomcat Server
• TomEE
• Jetty
• GlassFish
• Database Configuration