[2020-11-16T11:14:37,837][INFO ][o.e.e.NodeEnvironment ] [secmonprd08] using [1] data paths, mounts [[/data (data)]], net usable_space [1.1tb], net total_space [7tb], types [zfs]
[2020-11-16T11:14:37,841][INFO ][o.e.e.NodeEnvironment ] [secmonprd08] heap size [11.4gb], compressed ordinary object pointers [true]
[2020-11-16T11:14:37,843][INFO ][o.e.n.Node ] [secmonprd08] node name [secmonprd08], node ID [saM1g-kRR22Y0d4N7M0jwQ]
[2020-11-16T11:14:37,843][INFO ][o.e.n.Node ] [secmonprd08] version[6.8.12], pid[15469], build[default/deb/7a15d2a/2020-08-12T07:27:20.804867Z], OS[Linux/4.15.0-122-generic/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_121/25.121-b13]
[2020-11-16T11:14:37,844][INFO ][o.e.n.Node ] [secmonprd08] JVM arguments [-XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -Des.networkaddress.cache.ttl=60, -Des.networkaddress.cache.negative.ttl=10, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/tmp/elasticsearch-4171184815988091138, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=/var/lib/elasticsearch, -XX:ErrorFile=/var/log/elasticsearch/hs_err_pid%p.log, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:/var/log/elasticsearch/gc.log, -XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Des.path.home=/usr/share/elasticsearch, -Des.path.conf=/etc/elasticsearch, -Des.distribution.flavor=default, -Des.distribution.type=deb]
[2020-11-16T11:14:39,059][ERROR][o.e.b.Bootstrap ] [secmonprd08] Exception
java.lang.IllegalStateException: failed to load plugin class [org.elasticsearch.xpack.core.XPackPlugin]
followed by a vast amount of stack trace. There seemed to be some sort of failure in the exception handling.