check_connections

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Perl
Linux
2010-02-02
红薯222

check_connections 是一个 Nagios 的监控插件,用来监控 TCP 连接的有效性。

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Too many connections

在一次启动项目的过程中报了如下一个错误信息: [ERROR] [2019-03-20 13:14:43] com.alibaba.druid.pool.DruidDataSource.init(629) | init datasource error com.mysql.jdbc.exceptions.jdb...

2019/03/20 13:38
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MySQL Too many connections

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" at...

2019/09/17 14:19
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1040 too many connections

重启MySQL服务 登录成功后执行以下语句查询当前的最大连接数 select VARIABLE_VALUE from information_schema.GLOBAL_VARIABLES where VARIABLE_NAME='MAX_CONNECTIONS'; 修改链接数 2. 执行...

2015/07/27 18:40
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Rails Database connections

As you add more concurrency to your application it will need more connections to your database. A good formula for determining the number of connections each application will re...

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jdbc使用c3p0是异常:Connections could not be acquired from the underlying database!

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