Wildfly 35

[rpx99]

Hi, I am trying to use jgroups-raft with wildfly 35. Created a module with the latest jar jgroups-raft-1.0.14.Final.jar in wildfly-35.0.0.Final\modules\system\layers\base\org\jgroups\raft\main

<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.9" name="org.jgroups.raft">
    <resources>
        <resource-root path="jgroups-raft-1.0.14.Final.jar"/>
        <resource-root path="jgroups-5.3.13.Final.jar"/>  
		<resource-root path="leveldbjni-all-1.8.jar"/>
    </resources>
    <dependencies>
        <module name="org.jgroups" slot="main"/>  
		<module name="org.fusesource.leveldbjni" slot="main"/>  
	</dependencies>
</module>

Part of my standalone-full-ha.xml :

        <subsystem xmlns="urn:jboss:domain:jgroups:9.0">
            <channels>
				<channel name="raft-channel" stack="raft-stack"/> <!-- RAFT-Kanal -->
            </channels>
            <stacks>
				<stack name="raft-stack">
					<transport type="TCP" socket-binding="jgroups-tcp"/>
					<protocol type="RAFT">
						<property name="members">192.168.1.100[7600],192.168.1.101[7700],192.168.1.102[7800]</property>
					</protocol>
					<protocol type="FD_ALL"/>
					<protocol type="ELECTION"/>
					<protocol type="GMS"/>
				</stack>
            </stacks>
        </subsystem>

Cannot get it to work.

20:57:50,261 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 42) WFLYCTL0013: Operation ("add") failed - address: ([
    ("subsystem" => "jgroups"),
    ("channel" => "raft-channel")
]) - failure description: "WFLYCLJG0016: Unable to load protocol class org.jgroups.protocols.RAFT"
20:57:50,264 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) "WFLYCTL0193: Failed executing subsystem jgroups boot operations"
20:57:50,267 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("parallel-subsystem-boot") failed - address: ([]) - failure description: "\"WFLYCTL0193: Failed executing subsystem jgroups boot operations\""

What are my mistakes?

Thanks!

[jabolina]

Hey, @rpx99. Thanks for reporting. I'll take a look soon.

One thing to analyze: when you deploy, you'll need to provide the RAFT ID of each node. The RAFT ID must be in the RAFT.members list and unique for each node. Can you confirm whether you are providing that value? I haven't tried it, but I believe it should be something like:

				<stack name="raft-stack">
					<transport type="TCP" socket-binding="jgroups-tcp"/>
					<protocol type="RAFT">
						<property name="raft_id">192.168.1.100[7600]</property> <!-- Notice the new property, unique for each node. -->
						<property name="members">192.168.1.100[7600],192.168.1.101[7700],192.168.1.102[7800]</property>
					</protocol>
					<protocol type="FD_ALL"/>
					<protocol type="ELECTION"/>
					<protocol type="GMS"/>
				</stack>

[bstansberry]

This is likely a WildFly configuration problem, unrelated to JGroups RAFT itself. See https://wildfly.zulipchat.com/#narrow/channel/196266-wildfly-user/topic/jgroups.20raft

[rpx99]

Thanks a lot. I tried both of your suggestions. Still, unfortunately the module doesn't seem to get loaded.

Any other ideas or maybe you can try if it works on your machine, please? Thank you.