Merge branch '2.3' into 2.4

system-test/show_monitor_crash.cpp

@@ -0,0 +1,32 @@
+/**
+ * @file show_monitor_crash.cpp show_monitor_crash regression case for crash if maxadmin 'show monitors'
+ * command is issued, but no monitor is not running
+ *
+ * - maxscale.cnf contains wrong monitor config (user name is wrong)
+ * - issue 'show monitors' maxadmin command
+ * - check for crash
+ */
+
+
+
+#include <iostream>
+#include <unistd.h>
+#include <maxtest/testconnections.hh>
+
+using namespace std;
+
+int main(int argc, char* argv[])
+{
+    TestConnections* Test = new TestConnections(argc, argv);
+    Test->set_timeout(100);
+    Test->maxscales->execute_maxadmin_command(0, (char*) "show monitors");
+    sleep(5);
+    // Servers should get the Auth Error state when credentials are bad
+    Test->log_includes(0, "Auth Error, Down");
+
+    Test->check_maxscale_processes(0, 1);
+
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}