一、如果主库执行的是flush xxx等非事务型语句,则不会阻塞set global super_read_only=on的执行: 二、如果主库执行的是事务型的语句,比如create database、insert into,则会阻塞set global super_read_only=on的执行: 问题分析 初步分析 由于set global super_read_only=on修改变量时会调用fix_super_read_only...
1)readonly 对super用户权限无效。一般来说,业务方只有增删改查的dml权限,但是有的业务却需要ddl权限,比如建表,删表等ddl操作,因此有的业务可能有super权限,这就会导致业务仍然可以进行写数据,让read_olny失效。2)将整个库设置为 readonly 之后,如果客户端发生异常,则数据库就会一直保持 readonly 状态,这样会导致...
SET GLOBAL read_only = true(或SET GLOBAL read_only = 1): 该命令会将MySQL服务器设置为全局只读模式,禁止所有连接的写入操作。 对所有连接都生效,不仅限于当前连接。 需要具有适当的权限(如SUPER权限)才能执行此命令。 可以用于在维护期间或对数据库提供只读访问的情况下保护数据的完整性。 总结: FLUSH TABLES...
1)readonly 对super用户权限无效。一般来说,业务方只有增删改查的dml权限,但是有的业务却需要ddl权限,比如建表,删表等ddl操作,因此有的业务可能有super权限,这就会导致业务仍然可以进行写数据,让read_olny失效。 2)将整个库设置为 readonly 之后,如果客户端发生异常,则数据库就会一直保持 readonly 状态,这样会导...
The HiddenFromAddressListsEnabled parameter specifies whether the Microsoft 365 Group appears in the global address list (GAL) and other address lists in your organization. Valid values are: $true: The Microsoft 365 Group is hidden from the GAL and other address lists. The group can still ...
The command uses an appropriate global catalog server automatically. You can only use the DN for the Identity parameter. Other forms of identification, such as alias or GUID, aren't accepted. Expand table Type: SwitchParameter Position: Named Default value: None Required: False Accept pipeline ...
A replica cluster with the global statusOK_NOT_CONSISTENThas a set of transactions on the cluster (the GTID set) that is inconsistent with the GTID set on the primary cluster. InnoDB ClusterSet does not permit a controlled switchover to a cluster in this state, because clients would access ...
request and connections are no longer accepted, with the exception of client users that have the CONNECTION_ADMIN or SUPER privilege. The exitStateAction option accepts case-insensitive string values, being the accepted values: OFFLINE_MODE (or 2), ABORT_SERVER (or 1) and READ_ONLY (or 0)....
Description:When a semi-sync master lost connection with it's slave, thus is waiting for the rpl_semi_sync_master_timeout with a commit, it's impossible to set the [super_]read_only variable before the timeout. This makes it problematic with failover scripts when we need to promote a ...
getReadOnlyProperty() Returns the readonly property, that is synchronized with this ReadOnlySetWrapper. void removeListener(ChangeListener<? super ObservableSet<E>> listener) Removes the given listener from the list of listeners, that are notified whenever the value of the ObservableValue changes...