Aeron media driver volume for multi-node CI, #30601 (#30835)

.github/workflows/multi-node.yml

@@ -141,6 +141,10 @@ jobs:
             -Dmultinode.Xms512M \
             -Dmultinode.Xmx512M \
             -Dmultinode.Xlog:gc \
+            -Daeron.dir=/opt/volumes/media-driver \
+            -Dmultinode.Daeron.dir=/opt/volumes/media-driver \
+            -Daeron.term.buffer.length=33554432 \
+            -Dmultinode.Daeron.term.buffer.length=33554432 \
             akka-cluster/test \
             akka-distributed-data/test \
             akka-cluster-tools/test \

akka-remote/src/main/scala/akka/remote/artery/aeron/ArteryAeronUdpTransport.scala

@@ -91,7 +91,7 @@ private[remote] class ArteryAeronUdpTransport(_system: ExtendedActorSystem, _pro
       } else {
         // create a random name but include the actor system name for easier debugging
         val uniquePart = UUID.randomUUID().toString
-        val randomName = s"${CommonContext.AERON_DIR_PROP_DEFAULT}-${system.name}-$uniquePart"
+        val randomName = s"${CommonContext.getAeronDirectoryName}-${system.name}-$uniquePart"
         driverContext.aeronDirectoryName(randomName)
       }
       driverContext.clientLivenessTimeoutNs(settings.Advanced.Aeron.ClientLivenessTimeout.toNanos)

kubernetes/test-node-base.yaml

@@ -33,8 +33,8 @@ spec:
         imagePullPolicy: Always
         name: multi-test-nodeX
         volumeMounts:
-          - mountPath: /dev/shm
-            name: dshm
+          - mountPath: /opt/volumes/media-driver
+            name: media-driver
         ports:
         - name: web
           containerPort: 80
@@ -59,9 +59,8 @@ spec:
           protocol: TCP
       volumes:
         # Needed for Aeron tests: https://github.com/real-logic/aeron/blob/master/README.md#troubleshooting
-        - name: dshm
-          emptyDir:
-            medium: Memory
+        - name: media-driver
+          emptyDir: {}
 ---
 apiVersion: v1
 kind: Service