在本地并通过App Engine Flex连接到Google Cloud SQL（PostgreSQL）

时间：2018-11-29 19:41:22

标签： java postgresql google-cloud-sql app-engine-flexible cloud-sql-proxy

本地： 我的本地环境是Mac OS。我正在尝试使用Java 8连接到我的Cloud SQL（PostgreSQL）数据库。我已将IP列入白名单，并且能够使用pgadmin连接到数据库。我的服务帐户也是托管数据库的项目和App Engine环境的项目所有者。

这是我用来本地连接的教程：

https://cloud.google.com/sql/docs/postgres/connect-external-app#java

和我的实际代码：

        private static void jdbcUrl = String.format(
            "jdbc:postgresql://google/%s?socketFactory=com.google.cloud.sql.postgres.SocketFactory"
                    + "&cloudSqlInstance=%s",
            Configuration.getDatabaseName(),
            Configuration.getInstanceConnectionName());

    public static String getDbConnection() throws Exception {
        LOGGER.info(jdbcUrl);

        Connection connection = DriverManager.getConnection(jdbcUrl, Configuration.getUsername(), Configuration.getPassword());

...     }

这是在我的代码中生成的url调用（出于明显的目的，我已经更改了原始代码）：

jdbc:postgresql://google/users?socketFactory=com.google.cloud.sql.postgres.SocketFactory&cloudSqlInstance=my-project:europe-west1:my-db

由于此错误，我无法与此呼叫接通：

Nov 29, 2018 7:13:11 PM com.google.cloud.sql.postgres.SocketFactory createSocket
INFO: Connecting to Cloud SQL instance [my-project:europe-west1:my-db] via ssl socket.
Nov 29, 2018 7:13:11 PM com.google.cloud.sql.core.SslSocketFactory getInstance
INFO: First Cloud SQL connection, generating RSA key pair.
Nov 29, 2018 7:13:12 PM com.google.cloud.sql.core.SslSocketFactory fetchInstanceSslInfo
INFO: Obtaining ephemeral certificate for Cloud SQL instance [my-project:europe-west1:my-db].
Nov 29, 2018 7:13:13 PM com.google.cloud.sql.core.SslSocketFactory createAndConfigureSocket
INFO: Connecting to Cloud SQL instance [my-project:europe-west1:my-db] on IP [30.100.40.150].
org.postgresql.util.PSQLException: The connection attempt failed.
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:292)
    at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
    at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195)
    at org.postgresql.Driver.makeConnection(Driver.java:454)
    at org.postgresql.Driver.connect(Driver.java:256)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at com.ri.ccm.utils.DbConnection.getDbConnection(DbConnection.java:23)
    at com.ri.ccm.routes.DummyRoute.serviceCategoryDetail(DummyRoute.java:22)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:148)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:191)
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:200)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:316)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:298)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:268)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703)
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:833)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634)
    at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:206)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:541)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1593)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1239)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:481)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1562)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1141)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:118)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:564)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:210)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
    at sun.security.ssl.InputRecord.read(InputRecord.java:503)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:983)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1385)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1413)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1397)
    at com.google.cloud.sql.core.SslSocketFactory.createAndConfigureSocket(SslSocketFactory.java:210)
    at com.google.cloud.sql.core.SslSocketFactory.create(SslSocketFactory.java:160)
    at com.google.cloud.sql.postgres.SocketFactory.createSocket(SocketFactory.java:96)
    at org.postgresql.core.PGStream.<init>(PGStream.java:62)
    at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91)
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192)
    ... 64 more

但是，我可以通过此呼叫连接并获取数据：

jdbc:postgresql://30.100.40.150/users

唯一的问题是，我必须将每个ip（0.0.0.0/24）列入白名单，以便该网址在App Engine Flex（包括我的）中工作！现在出于安全原因，我显然不想这样做。

通过App Engine Flex：

jdbc:postgresql://30.100.40.150/users

我能够在App Engine Flex中与此呼叫^连接，但同样，我必须将每个IP列入白名单才能使其正常工作。该文档指出，我无需将App Engine Flex中的IP列入白名单即可使用（它应该只使用服务帐户）。我猜原来的电话，在文档中做到了。但是，这不起作用。所以我停滞不前。

拜托，因为上帝的爱，有人可以帮助我。连接数据库并不难！

我要做的就是通过我的本地环境和App Engine Flex环境连接到远程Cloud SQL PostgreSQL数据库，而不必将每个IP地址都列入白名单（并以“正确”的方式进行）。我正在使用maven配置文件来区分我的环境。

我也尝试过设置Cloud SQL Proxy供本地使用，它不起作用，并且出现此错误：

couldn't connect to "my-project:europe-west1:my-db": read tcp 10.75.120.100:49663->30.100.40.150:3307: read: connection reset by peer

我的想法已经用尽，这可能是防火墙端口问题吗？请帮助：（

2 个答案:

答案 0 :(得分：0)

使用Cloud SQL代理或套接字工厂时需要出站tcp端口3307访问，但使用本机PostgreSQL JDBC驱动程序时则不需要。确保您的Mac或本地网络上没有防火墙，阻止出站端口3307。

答案 1 :(得分：0)

您是否在本地环境中安装了Google Cloud SDK，并且已通过身份验证？您可以通过输入以下命令进行测试：

gcloud projects list
  

JDBC套接字工厂提供了客户端代理软件的替代方法，并且需要像Cloud SQL Proxy一样启用Cloud SQL API。套接字工厂提供与代理相同的加密级别，并使用Cloud SDK凭据进行身份验证，因此必须安装并验证Cloud SDK。

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