Ignition Edge 8.0.16 java version


We have a small issue with booting Ignition EDGE under Linux on a MOXA device.

We have MOXA UC8100-A-ME-T with a Armv7 Cortex-A8 processor (32bit). What Java version is required to run Ignition Edge 8.0.16

Additionally, is there a compatibility list available for Ignition versions against Java SDK version?

STATUS | wrapper | 2020/09/23 13:24:52 | --> Wrapper Started as Daemon
STATUS | wrapper | 2020/09/23 13:24:52 | Java Service Wrapper Standard Edition 32-bit 3.5.42
STATUS | wrapper | 2020/09/23 13:24:52 | Copyright © 1999-2020 Tanuki Software, Ltd. All Rights Reserved.
STATUS | wrapper | 2020/09/23 13:24:52 | http://wrapper.tanukisoftware.com
STATUS | wrapper | 2020/09/23 13:24:52 | Licensed to Inductive Automation for Inductive Automation
STATUS | wrapper | 2020/09/23 13:24:52 |
STATUS | wrapper | 2020/09/23 13:24:53 | Launching a JVM…
INFO | jvm 1 | 2020/09/23 13:24:54 | WrapperManager: Initializing…
INFO | jvm 1 | 2020/09/23 13:24:58 | WrapperSimpleApp Error: Class com.inductiveautomation.catapult.Catapult found but could not be initialized: java.lang.UnsupportedClassVersionError: com/inductiveautomation/catapult/Catapult has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
STATUS | wrapper | 2020/09/23 13:25:00 | <-- Wrapper Stopped

moxa@Moxa:~$ jdk1.8.0_261/bin/java -version
java version "1.8.0_261"
Java™ SE Runtime Environment (build 1.8.0_261-b13)
Java HotSpot™ Client VM (build 25.261-b13, mixed mode)

UC-8112A-ME-T-LX version 1.3

Thanks in advance!

Ignition 8.x gateways ship with their own Java runtime, you don’t need to have one installed.

Currently we are shipping JDK 11.

Did you modify ignition.conf somehow to make it use your local Java install?

1 Like

Hello Kevin,

We did indeed change ignition.conf, but we changed it according to a MOXA IIoT installation guide. Upon inspection we see that it is not an official MOXA supported instruction guide.


We changed the parameter, and now it is working!

Thanks for your fast support!

That guide was likely written for Ignition 7.9 and prior, before we started including our own Java runtime.