linghengqian opened a new issue #13120: URL: https://github.com/apache/shardingsphere/issues/13120
## Question **For English only**, other languages will not accept. Before asking a question, make sure you have: - Googled your question. - Searched open and closed [GitHub issues](https://github.com/apache/shardingsphere/issues). - Read documentation: [ShardingSphere Doc](https://shardingsphere.apache.org/document/current/en/overview). Please pay attention on issues you submitted, because we maybe need more details. If no response anymore and we cannot reproduce it on current information, we will **close it**. ShardingSphere-Proxy is configured with mysql, but postgresql exception is thrown. I am using ShardingSphere-Proxy 5.0.0-beta. Below is my configuration information. server.yaml ```yaml governance: name: governance_ds registryCenter: type: ZooKeeper serverLists: localhost:2181 props: retryIntervalMilliseconds: 500 timeToLiveSeconds: 60 maxRetries: 3 operationTimeoutMilliseconds: 500 overwrite: false rules: - !AUTHORITY users: - root@%:root - sharding@:sharding provider: type: ALL_PRIVILEGES_PERMITTED props: max-connections-size-per-query: 1 executor-size: 16 proxy-frontend-flush-threshold: 128 proxy-transaction-type: LOCAL xa-transaction-manager-type: Atomikos proxy-opentracing-enabled: false proxy-hint-enabled: false sql-show: false check-table-metadata-enabled: false ``` config-sharding.yaml ```yaml schemaName: sharding_db dataSources: ds_0: url: jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2b8&useSSL=false username: sgckDataBaseTest password: Yb65GjEbdjRmeHJs connectionTimeoutMilliseconds: 30000 idleTimeoutMilliseconds: 60000 maxLifetimeMilliseconds: 1800000 maxPoolSize: 50 minPoolSize: 1 maintenanceIntervalMilliseconds: 30000 rules: - !SHARDING tables: tb_result3_sharding_sphere: actualDataNodes: ds_0.tb_result3_sharding_sphere_$->{1..366} tableStrategy: standard: shardingColumn: datadate shardingAlgorithmName: tb-result3-class-based keyGenerateStrategy: column: tb_result3_id keyGeneratorName: snowflake shardingAlgorithms: tb-result3-class-based: type: CLASS_BASED props: algorithmClassName: com.sg8000.spi.TbResult3ShardingAlgorithm keyGenerators: snowflake: type: SNOWFLAKE props: worker-id: 1 ``` The following is the error message. I did not configure the configuration related to postgresql, and the jar package placed in the lib directory is mysql-connector-java-5.1.47.jar. Does the proxy still read the content of the comments in the yaml? Or does it require a computer to install postgresql on its own?  ```shell [ERROR] 2021-10-19 11:15:38.625 [main] com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Exception during pool initialization. org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted [ERROR] 2021-10-19 11:15:38.625 [main] com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Exception during pool initialization. org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted [ERROR] 2021-10-19 11:15:38.633 [main] o.a.s.p.b.c.j.d.f.JDBCRawBackendDataSourceFactory - Exception occur: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:589) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:575) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) ... 18 common frames omitted Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted [ERROR] 2021-10-19 11:15:41.683 [main] com.zaxxer.hikari.pool.HikariPool - HikariPool-2 - Exception during pool initialization. org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted [ERROR] 2021-10-19 11:15:41.683 [main] com.zaxxer.hikari.pool.HikariPool - HikariPool-2 - Exception during pool initialization. org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted [ERROR] 2021-10-19 11:15:41.689 [main] o.a.s.p.b.c.j.d.f.JDBCRawBackendDataSourceFactory - Exception occur: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:589) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:575) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81) at org.apache.shardingsphere.proxy.backend.communication.jdbc.datasource.factory.JDBCRawBackendDataSourceFactory.build(JDBCRawBackendDataSourceFactory.java:74) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSources(AbstractBootstrapInitializer.java:94) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.lambda$createDataSourcesMap$0(AbstractBootstrapInitializer.java:88) at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1321) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createDataSourcesMap(AbstractBootstrapInitializer.java:88) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:81) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) Caused by: org.postgresql.util.PSQLException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) 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 com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) ... 18 common frames omitted Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.postgresql.core.PGStream.<init>(PGStream.java:70) at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:91) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ... 27 common frames omitted Exception in thread "main" java.lang.IllegalArgumentException: Data sources cannot be empty. at com.google.common.base.Preconditions.checkArgument(Preconditions.java:142) at org.apache.shardingsphere.sharding.rule.ShardingRule.<init>(ShardingRule.java:102) at org.apache.shardingsphere.sharding.rule.builder.ShardingRuleBuilder.build(ShardingRuleBuilder.java:37) at org.apache.shardingsphere.sharding.rule.builder.ShardingRuleBuilder.build(ShardingRuleBuilder.java:33) at org.apache.shardingsphere.infra.rule.builder.ShardingSphereRulesBuilder.lambda$buildSchemaRules$0(ShardingSphereRulesBuilder.java:66) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566) at org.apache.shardingsphere.infra.rule.builder.ShardingSphereRulesBuilder.buildSchemaRules(ShardingSphereRulesBuilder.java:66) at org.apache.shardingsphere.infra.context.metadata.MetaDataContextsBuilder.buildMetaData(MetaDataContextsBuilder.java:99) at org.apache.shardingsphere.infra.context.metadata.MetaDataContextsBuilder.build(MetaDataContextsBuilder.java:90) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.createMetaDataContexts(AbstractBootstrapInitializer.java:84) at org.apache.shardingsphere.proxy.initializer.impl.AbstractBootstrapInitializer.init(AbstractBootstrapInitializer.java:67) at org.apache.shardingsphere.proxy.Bootstrap.main(Bootstrap.java:48) ``` -- This is an automated message from the Apache Git Service. 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