[FLINK-19699][e2e] Collect dmesg output after tests

flink-end-to-end-tests/run-nightly-tests.sh

@@ -42,6 +42,7 @@ if [ ! -z "$TF_BUILD" ] ; then
 
 	function run_on_exit {
 		collect_coredumps $(pwd) $ARTIFACTS_DIR
+		collect_dmesg $ARTIFACTS_DIR
 		compress_logs
 	}
 

tools/ci/maven-utils.sh

@@ -79,6 +79,10 @@ function collect_coredumps {
 	done
 }
 
+function collect_dmesg {
+	local TARGET_DIR=$1
+	dmesg > $TARGET_DIR/dmesg.out
+}
 
 CI_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"