Merge branch '2.2' into develop

BUILD/install_build_deps.sh

@@ -66,6 +66,9 @@ else
          sqlite sqlite-devel pkgconfig lua lua-devel rpm-build createrepo yum-utils \
          gnutls-devel libgcrypt-devel pam-devel
 
+    # Attempt to install libasan, it'll only work on CentOS 7
+    sudo yum install -y --nogpgcheck libasan
+
     cat /etc/redhat-release | grep "release 5"
     if [ $? == 0 ]
     then

BUILD/mdbci/build.sh

@@ -52,6 +52,12 @@ if [ "${try_already_running}" == "yes" ]; then
 fi
 
 if [ "$already_running" != "ok" ]; then
+	# destroying existing box
+	if [ -d "$MDBCI_VM_PATH/${name}" ]; then
+		${mdbci_dir}/mdbci destroy $name
+	fi
+        # Just in case some old lock file left
+        rm -rf ${snapshot_lock_file}
 
   eval "cat <<EOF
 $(<${script_dir}/templates/build.json.template)
@@ -64,11 +70,6 @@ $(<${script_dir}/templates/build.json.template)
 	touch ~/vagrant_lock
 	echo $JOB_NAME-$BUILD_NUMBER >> ~/vagrant_lock
 
-	# destroying existing box
-	if [ -d "$MDBCI_VM_PATH/${name}" ]; then
-		${mdbci_dir}/mdbci destroy $name
-	fi
-
 	# starting VM for build
 	echo "Generating build VM template"
 	${mdbci_dir}/mdbci --override --template $MDBCI_VM_PATH/$name.json generate $name
@@ -104,14 +105,11 @@ if [ $? -eq 0 ] ; then
 #        exit 1
 fi
 
-
 ${script_dir}/create_remote_repo.sh
-
 ${script_dir}/copy_repos.sh
 
-
 echo "Removing locks and destroying VM"
-cd $MDBCI_VM_PATH/$name
+
 if [ "$try_already_running" == "yes" ] ; then
   echo "Release lock for already running VM"
   rm $snapshot_lock_file

maxscale-system-test/CMakeLists.txt

@@ -632,6 +632,10 @@ add_test_executable(mxs1678_relay_master.cpp mxs1678_relay_master replication LA
 # https://jira.mariadb.org/browse/MXS-1713
 add_test_executable(mxs1713_lots_of_databases.cpp mxs1713_lots_of_databases mxs1713_lots_of_databases LABELS REPL_BACKEND)
 
+# MXS-1731: Empty version_string is not detected
+# https://jira.mariadb.org/browse/MXS-1731
+add_test_executable(mxs1731_old_persisted_config.cpp mxs1731_old_persisted_config replication LABELS REPL_BACKEND)
+
 # 'namedserverfilter' test
 add_test_executable(namedserverfilter.cpp namedserverfilter namedserverfilter LABELS namedserverfilter LIGHT REPL_BACKEND)
 

maxscale-system-test/mxs1731_old_persisted_config.cpp

@@ -0,0 +1,47 @@
+/**
+ * MXS-1731: Empty version_string is not detected
+ *
+ * https://jira.mariadb.org/browse/MXS-1731
+ */
+
+#include "testconnections.h"
+#include <fstream>
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+int main(int argc, char** argv)
+{
+    TestConnections test(argc, argv);
+    const char* filename = "/tmp/RW-Split-Router.cnf";
+
+    {
+        std::ofstream cnf(filename);
+        cnf << "[RW-Split-Router]" << endl
+            << "type=service" << endl
+            << "version_string=" << endl;
+    }
+
+    test.maxscales->copy_to_node_legacy(filename, filename);
+    test.maxscales->ssh_node_f(0, true,
+                               "mkdir -p /var/lib/maxscale/maxscale.cnf.d/;"
+                               "chown maxscale:maxscale /var/lib/maxscale/maxscale.cnf.d/;"
+                               "cp %s /var/lib/maxscale/maxscale.cnf.d/RW-Split-Router.cnf", filename);
+
+    test.maxscales->restart();
+    test.check_maxscale_alive();
+
+    int rc = test.maxscales->ssh_node_f(0, true, "grep 'version_string' /var/lib/maxscale/maxscale.cnf.d/RW-Split-Router.cnf");
+    test.assert(rc == 0, "Generated configuration should have version_string defined and MaxScale should ignore it.");
+
+    test.maxscales->ssh_node_f(0, true, "maxadmin alter service RW-Split-Router enable_root_user=false");
+
+    test.maxscales->restart();
+    test.check_maxscale_alive();
+
+    rc = test.maxscales->ssh_node_f(0, true, "grep 'version_string' /var/lib/maxscale/maxscale.cnf.d/RW-Split-Router.cnf");
+    test.assert(rc != 0, "Generated configuration should not have version_string defined.");
+
+    return test.global_result;
+}

maxscale-system-test/nodes.h

@@ -132,7 +132,7 @@ public:
      * @param i Node index
      * @return exit code of the system command or 1 in case of i > N
      */
-    int copy_to_node_legacy(const char* src, const char* dest, int i);
+    int copy_to_node_legacy(const char* src, const char* dest, int i = 0);
     int copy_to_node(int i, const char* src, const char* dest);
 
     /**

maxscale-system-test/pers_02.cpp

@@ -30,8 +30,11 @@ int main(int argc, char *argv[])
     Test->repl->close_connections();
     Test->repl->sync_slaves();
 
-    Test->set_timeout(60);
+    // Increase connection limits and wait a few seconds for the server to catch up
     Test->repl->execute_query_all_nodes((char *) "set global max_connections = 2000;");
+    sleep(10);
+
+    Test->set_timeout(60);
     Test->add_result(Test->create_connections(0, 70 , true, true, true, true),
                      "Connections creation error \n");
 

server/core/config.cc

@@ -492,8 +492,19 @@ static int ini_handler(void *userdata, const char *section, const char *name, co
 
     if (is_empty_string(value))
     {
-        MXS_ERROR("Empty value given to parameter '%s'", name);
+        if (is_persisted_config)
-        return 0;
+        {
+            /**
+             * Found old-style persisted configuration. These will be automatically
+             * upgraded on the next modification so we can safely ignore it.
+             */
+            return 1;
+        }
+        else
+        {
+            MXS_ERROR("Empty value given to parameter '%s'", name);
+            return 0;
+        }
     }
 
     if (config_get_global_options()->substitute_variables)

server/core/listener.cc

@@ -319,6 +319,9 @@ listener_init_SSL(SSL_LISTENER *ssl_listener)
         /** Disable SSLv3 */
         SSL_CTX_set_options(ssl_listener->ctx, SSL_OP_NO_SSLv3);
 
+        // Disable session cache
+        SSL_CTX_set_session_cache_mode(ssl_listener->ctx, SSL_SESS_CACHE_OFF);
+
         /** Generate the 512-bit and 1024-bit RSA keys */
         if (rsa_512 == NULL && (rsa_512 = create_rsa(512)) == NULL)
         {