解决 c3p0报错 Establishing SSL connection without server's identity verification is not recommended

Posted 2023-04-26 诺虫的箱子

解决 c3p0报错 Establishing SSL connection without server\'s identity verification is not recommended

 

 

?useSSL=false

<c3p0-config>

  <default-config>

        <property name="driverClass">com.mysql.jdbc.Driver</property>

        <property name="jdbcUrl">jdbc:mysql://127.0.0.1:3306/jdbc?useSSL=false</property>

        <property name="user">root</property>

        <property name="password">root</property>

  </default-config>

</c3p0-config>

解决： Establishing SSL connection without server‘s identity verification is not recommended. Accord(代码

我在slave1上启动hive时一直循环

Mon Aug 16 15:47:55 CST 2021 WARN: Establishing SSL connection without server’s identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn’t set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to ‘false’. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.

百度后找到解决方案
1.进入hive的conf 目录修改hive-site.xml

cd /usr/hive/apache-hive-2.1.1-bin/conf
vi hive-site.xml

2.找到下面这个内容

    <!--数据库连接JDBC的URL地址-->
<property>
    <name>javax.jdo.option.ConnectionURL</name>
        <value>jdbc:mysql://slave2:3306/hive?createDatabaseIfNotExist=true</value>
</property>
    <!--数据库连接driver，即MySQL驱动-->
<property>

3.修改<value>那一行，并在下面加上<description>那一行~

修改前：

<value>jdbc:mysql://slave2:3306/hive?createDatabaseIfNotExist=true</value>

修改后：

<value>jdbc:mysql://slave2:3306/hive?createDatabaseIfNotExist=true&amp;characterEncoding=UTF-8&amp;useSSL=false</value>
<description>JDBC connect string for a JDBC metastore</description>

改完是这样的

再启动hive，成功！