MySQL NDB Cluster 8.1 手冊
MySQL NDB Cluster 8.0 手冊
NDB Cluster 內部手冊
此範例也可以在 storage/ndb/ndbapi-examples/ndbapi_basic/ndbapi_basic_connect.cpp
中找到,它示範如何使用 Ndb_cluster_connection
以使用指定的連線字串連線至 NDB 管理伺服器。成功時,它會取得並列印出一些關於叢集的資訊。如果無法連線至管理節點或資料節點,它會列印出適當的錯誤並結束。
#include <iostream>
#include <cstdlib>
#include <NdbApi.hpp>
namespace
{
inline void test_connection(const Ndb_cluster_connection &connection)
{
std::cout << "Connected to: " << connection.get_system_name()
<< ",\n\ton port: " << connection.get_connected_port()
<< ",\n\tactive NDBDs: " << connection.get_active_ndb_objects()
<< std::endl;
}
}
int main(int argc, char **argv)
{
if (argc != 2)
{
std::cout << "Usage: ndb_ndbapi_basic_connect <connectstring>"
<< std::endl;
return EXIT_FAILURE;
}
const char *connectstring = argv[1];
ndb_init();
{
Ndb_cluster_connection connection(connectstring);
if (connection.connect() != 0)
{
std::cout << "Cannot connect to cluster management server" << std::endl;
return EXIT_FAILURE;
}
if (connection.wait_until_ready(30, 0) != 0)
{
std::cout << "Cluster was not ready within 30 secs" << std::endl;
return EXIT_FAILURE;
}
// Let's verify connection
test_connection(connection);
}
ndb_end(0);
return EXIT_SUCCESS;
}