Java Application Server Setup

Java Application Server Setup

To set up your application server, press the Config button next to it. If you have multiple servers, you can set them up together or one by one. Here’s how:

Step 1: Open the drop-down menu at the top of the configuration tab to see a list of all your app servers.

Step 2: Pick the server you want and adjust the settings.

Step 3: To save the changes:

For just the selected server, click Save only for the current instance from the drop-down menu.

For all servers, click Save for all instances.

Here is a list of configuration files you can edit for Java application servers:

• Tomcat
• TomEE
• GlassFish
• Jetty

For details on which settings can be changed in the config folders, refer to these descriptions:

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

SERVER

You can configure the main Java servlet container settings in the server folder.

Here are some actions you can perform with these files:

• context.xml: Set up session replication with Memcached.
• web.xml: Set up remote access with WebDav.
• server.xml: Enable multiple domains.
• variables.conf:
  • Set memory settings for your Java containers with custom GC, -Xmx, and -Xms parameters. Use each parameter on a new line

Xmx<size>m
Xms<size>m

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

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

• • Configure JavaAgent interceptor
  • Enable remote debugging

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

HOME

If you need custom files or folders to configure your application, you can download or create them in the home directory of your Java server.

Then, you can point to these files in the variables.conf file located in the server folder.

WEBAPPS / WORK

The webapps folder (for Tomcat/TomEE) and the work folder (for Jetty) store unpacked applications deployed to the environment.

JAVA_HOME

The JAVA_HOME folder holds Java config files and libraries. You can edit Java settings and upload extra Java libraries here.

LIB

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

CRON

App servers have a cron folder with a config file for setting up cron jobs. For more details, see the Setting Up a Cronjob document.

KEYS

The keys folder is where you upload private keys needed for your application. Generate the key, save it as a file, and upload it to this folder. You can use it by specifying the path to your key:

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

CONTEXTS

The contexts folder contains XML config files for each deployed context, and you can edit all these files.

SERVER_LIB

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

APPS

The apps folder in TomEE stores unpacked EE applications deployed to the environment.

Tomcat

TomEE

GlassFish

Jetty