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MHA masterha_check_repl detection process Whether the MHA deployment and configuration are OK. We can use the masterha_check_ssh and masterha_check_repl scripts provided by MHA to check whether the MHA deployment and configuration are OK.

MySQL 'root' @ 'localhost' cannot be logged on

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MySQL MHA configuration FAQ MHA is widely used in MySQL databases. It is compact, easy to use, and powerful. It enables manual master-slave failover Based on the MySQL replication architecture, redirects from the database to the master database, and

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Knowledge about Oracle official documents Although many Oracle DBAs have been familiar with Oracle for a long time, they are used to Baidu or Google if they cannot remember the syntax or find corresponding parameters. Although the official

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Mha vip switch script MHA can ~ Automatic Fault Detection and Failover within 30 seconds, suitable for high availability and high data integrity requirements. To achieve seamless switching, you also need to rely on VIP drift. The commonly used

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Mysql error: Unknown character set: & #39; utf8mb4 & #39;, mysqlutf8mb4

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