Defines how long the node requires a delayed node to remain responsive before it removes an entry from the delayed list
wsrep_provider_options system variable applies to MariaDB Enterprise Cluster, powered by Galera and to Galera Cluster available with MariaDB Community Server. This page relates specifically to the evs.delayed_
See also: wsrep Provider Options for MariaDB Enterprise Server 23.08, in 23.07 ES, in 10.6 ES, in 10.5 ES, in 10.4 ES, in 10.3 ES, in 10.2 ES, in 10.6 CS, in 10.5 CS, in 10.4 CS, in 10.3 CS, and in 10.2 CS
Each cluster node monitors the group communication response times from all other nodes. When the cluster registers a delayed response from a given node, it adds an entry for that node to its delayed list. Nodes that remain on the delayed list can trigger
Auto Eviction, which removes them permanently from the cluster.
evs.delayed_keep_period option determines how long a node on the delayed list must remain responsive before it removes one entry. The number of entries on the delayed list and how long it takes before the node removes all entries depends on how long the delayed node was unresponsive.
Display Current Value
wsrep_provider_options define optional settings the node passes to the wsrep provider.
To display current
SHOW GLOBAL VARIABLES LIKE 'wsrep_provider_options';
The expected output will display the option and the value. Options with no default value, for example SSL options, will not be displayed in the output.
Set in Configuration File
When changing a setting for a wsrep_
Options are set in the
my.cnf configuration file. Use the
; delimiter to set multiple options.
The configuration file must be updated on each node. A restart to each node is needed for changes to take effect.
Use a quoted string that includes every option where you want to override the default value. Options that are not in the list will reset to their default value.
To set the option in the configuration file:
The evs.delayed_keep_period option cannot be set dynamically. It can only be set in the configuration file.
Trying to change a non-dynamic option with
SET results in an error:
ERROR 1210 (HY000): Incorrect arguments to SET
The minimum value for evs.delayed_keep_period is PT0S.
The maximum value for evs.delayed_keep_period is PT30S.