ClickHouse exception code:516
当客户端连接clickhouse-server出现异常：ClickHouse exception, code: 516 ， 经过分析错误码：
ClickHouse exception, code: 516, host: 192.168.0.108, port: 8888; Code: 516, e.displayText() = DB::Exception: default: Authentication failed: password is incorrect or there is no user with such name (version 20.9.2.20 (official build))
发现是clickhouse授权问题，需修改clickhouse 配置文件： 1.config.xml中listen_host为：：
2.修改users.xml中
<!-- Users and ACL. -->
<users>
<!-- If user name was not specified, default user is used. -->
<default>
<password>123123</password>
<networks incl="networks" replace="replace">
<ip>::/0</ip>
</networks>
<!-- Settings profile for user. -->
<profile>default</profile>
<!-- Quota for user. -->
<quota>default</quota>
<!-- User can create other users and grant rights to them. -->
<access_management>0</access_management>
</default>
</users>
