What does Wsrep mean?
replication plugin interface
wsrep API. The wsrep API is a generic replication plugin interface for databases. It defines a set of application callbacks and replication plugin calls. The wsrep API uses a replication model that considers the database server to have a state. That state refers to the contents of the database.
Is Galera Cluster free?
Galera Cluster software is free to download and use, along with MySQL and MariaDB software for the database component of a cluster.
How to set the IP address of a wsrep cluster?
wsrep_node_address: Use this parameter to set explicitly the IP address for the individual node. It’s used when auto-guessing doesn’t produce desirable results. [mysqld] wsrep_cluster_name=MyCluster wsrep_cluster_address=”gcomm://192.168.0.1,192.168.0.2,192.168.0.3″ wsrep_node_name=MyNode1 wsrep_node_address=”192.168.0.1″
What does wsrep _ debug do in Galera Cluster?
In addition to useful debugging information, the wsrep_debug parameter also causes the database server to print authentication information (i.e., passwords) to the error logs. Don’t enable it in production environments. You can execute the following SHOW VARIABLES statement with a LIKE operator to see if this variable is enabled:
What does the wsrep auto increment control parameter do?
The wsrep_auto_increment_control parameter enables additional calculations to this process, using the number of nodes connected to the Primary Component to adjust the increment and offset. This is done to reduce the likelihood that two nodes will attempt to write the same auto-increment value to a table.
What should MySQL default datadir be in wsrep?
During operation, the wsrep Provider needs to save various files to disk that record its internal state. This parameter defines the path to the directory that you want it to use. If not set, it defaults the MySQL datadir path.