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https://dev.mysql.com/doc/refman/8.0/en/connection-control-information-schema-tables.html
The following sections describe the INFORMATION_SCHEMA tables associated with the CONNECTION_CONTROL plugin.
https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html
admin_address Command-Line Format --admin-address=addr Introduced 8.0.14 System Variable admin_address Scope Global Dynamic No SET_VAR Hint Applies No Type String The IP address on which to listen for TCP/IP connections on the administrative network ... The MySQL server maintains many system variables that affect its ...
https://dev.mysql.com/doc/refman/8.0/en/transport-protocols.html
For programs that use the MySQL client library (for example, mysql and mysqldump), MySQL supports connections to the server based on several transport protocols: TCP/IP, Unix socket file, named pipe, and shared memory. Transport Protocol Selection ...This section describes how to select these protocols, and how they are similar and ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-configuring-ssl-for-recovery.html
Important When using the MySQL communication stack (group_replication_communication_stack=MYSQL) AND secure connections between members (group_replication_ssl_mode is not set to DISABLED), the security settings discussed in this section are applied ...If a remote cloning operation is used as part of distributed recovery, Group Replication automatically configures the clone plugin's SSL options to match your settings for the distributed recovery SSL ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-secure-socket-layer-support-ssl.html
Secure sockets can be used for group communication connections between members of a group. The Group Replication system variable group_replication_ssl_mode is used to activate the use of SSL for group communication connections and specify the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-tcp-definition.html
TCP/IP is the default transport mechanism for all connections between nodes in an NDB Cluster. Normally it is not necessary to define TCP/IP connections; NDB Cluster automatically sets up such connections for all data nodes, management nodes, and ...It is also possible to change the default values for these parameters by setting them in the [tcp default] ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-connection-configuration-table.html
This table shows the configuration parameters used by the replica for connecting to the source. It contains values that define how the replica connects to the source and that remain constant during the connection, whereas ...Parameters stored in ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-shm-definition.html
The shared-memory transporter (SHM) can improve performance by negating up to 20% of the overhead required by a TCP connection when running an API node (usually an SQL node) and a data node together on the same host. You can enable a shared memory ... Communications between NDB cluster nodes are normally handled using ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-asynchronous-connection-failover-managed-table.html
This table holds configuration information used by the replica's asynchronous connection failover mechanism to handle managed groups, including Group Replication topologies. When you add a group member to the source list and define it as part of a ...For a managed group, a source’s weight is assigned depending on whether it is a primary or a secondary ...
https://dev.mysql.com/doc/refman/8.0/en/communication-errors.html
If connection problems occur such as communication errors or aborted connections, use these sources of information to diagnose problems: The error log. If the log_error_verbosity system variable is set to 3, you might find messages like this in ...