大家都知道，mysql5.7以前的主从经常会发生延迟(据说5.7彻底解决了主从延迟)，试想一下，如果master故障了，要升slave(备用master)为master，但此slave的数据严重延迟于master，甚至是连binlog都还没读过来的那种。
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Fail definition is - to lose strength : weaken. How to use fail in a sentence. SSH Script Sensor | PRTG Manual - Paessler AG Setting. Description. Sensor Name. Enter a meaningful name to identify the sensor. By default, PRTG shows this name in the device tree, as well as in alarms, logs, notifications, reports, maps, libraries, and tickets.. Parent Tags. Shows tags that this sensor inherits from its parent device, group, and probe. This setting is shown for your information only and cannot be changed here. BBSMAX
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