WildFly Postgres DataSource远程连接 - 网址被忽略

Question

我在以独立群集模式设置Keycloak服务器时遇到了一些配置问题.尽管配置数据源以使用postgres数据库{REMOTE_IP},但它无法启动服务器抱怨它无法连接localhost:5432.

我一直在搜索,但是我很困惑为什么当connection-url设置为远程主机时,DataSource会尝试连接到localhost.

我的配置有什么错误吗？我怎样才能弄清楚为什么PG试图连接到localhost而不是{REMOTE_IP}

---

我的设置是1个Postgres数据库服务器和2个Keycloak服务器

我按照安装说明使用了关系数据库,并为Postgres添加了JDBC驱动程序v9.4.1212.

我的DataSource配置如下:

<datasource jndi-name="java:jboss/datasources/KeycloakDS" pool-name="KeycloakDS" enabled="true" use-java-context="true">
    <connection-url>jdbc:postgresql://{REMOTE_IP}:5432/keycloak</connection-url>
    <driver>postgresql</driver>
    <pool>
        <max-pool-size>20</max-pool-size>
    </pool>
    <security>
        <user-name>keycloak</user-name>
        <password>{PASSWORD}</password>
    </security>
</datasource>

日志中的错误消息显示为:

...
Caused by: org.postgresql.util.PSQLException: Connection to localhost: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:262)
    at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:52)
    at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:216)
    at org.postgresql.Driver.makeConnection(Driver.java:404)
    at org.postgresql.Driver.connect(Driver.java:272)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at org.postgresql.ds.common.BaseDataSource.getConnection(BaseDataSource.java:86)
    at org.postgresql.ds.PGPoolingDataSource.getConnection(PGPoolingDataSource.java:309)
    at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:312)
    ... 43 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    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.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.postgresql.core.PGStream.<init>(PGStream.java:61)
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:144)
    ... 52 more

我已经验证我可以使用psql连接到postgres

# psql -h {REMOTE_IP} keycloak keycloak
psql (9.5.7)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, 
bits: 256, compression: off)
Type "help" for help.

keycloak=>

Answer 1

我设法解决了我的情况.postgres的JDBC驱动程序配置为使用a PGPoolingDataSource并具有已datasource-class定义的.

<driver name="postgresql" module="org.postgresql">
    <xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
    <datasource-class>org.postgresql.ds.PGPoolingDataSource</datasource-class>
</driver>

当datasource-class被定义,连接URL必须通过传递connection-property来代替connection-url.我更新了配置,服务器启动正常.

<datasource jndi-name="java:jboss/datasources/KeycloakDS" pool-name="KeycloakDS" enabled="true" use-java-context="true">
    <connection-url>jdbc:postgresql://{REMOTE_IP}:5432/keycloak</connection-url>
    <connection-property name="url">jdbc:postgresql://{REMOTE_IP}:5432/keycloak</connection-property>
    <driver>postgresql</driver>
    <pool>
        <max-pool-size>20</max-pool-size>
    </pool>
    <driver-class>org.postgresql.Driver</driver-class>
    <security>
        <user-name>keycloak</user-name>
        <password>{PASSWORD}</password>
    </security>
</datasource>

此问题在wildfly问题跟踪器中注明 https://issues.jboss.org/browse/WFLY-6157