MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6
This table shows network and status information for
replication group members. The network addresses shown are the
addresses used to connect clients to the group, and should not
be confused with the member's internal group communication
address specified by
group_replication_local_address.
The replication_group_members table has
these columns:
CHANNEL_NAME
Name of the Group Replication channel.
MEMBER_ID
Identifier for this member; the same as the server UUID.
MEMBER_HOST
Network address of this member (host name or IP address).
Retrieved from the member's
hostname variable.
MEMBER_PORT
Port on which the server is listening. Retrieved from the
member's port variable.
MEMBER_STATE
Current state of this member; can be any one of the following:
OFFLINE: The Group Replication
plugin is installed but has not been started.
RECOVERING: The server has joined a
group from which it is retrieving data.
ONLINE: The member is in a fully
functioning state.
ERROR: The member has encountered
an error, either during applying transactions or
during the recovery phase, and is not participating in
the group's transactions.
UNREACHABLE: The failure detection
process suspects that this member cannot be contacted,
because the group messages have timed out.
TRUNCATE TABLE is not permitted
for the replication_group_members
table.