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Redirect slaves of promotion target

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This affects situations where the promoted server is a relay or multimaster
group member.
This commit is contained in:
Esa Korhonen
2018-10-11 11:35:53 +03:00
parent 20af9afb49
commit 0cf8ea43f7
4 changed files with 45 additions and 31 deletions
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7
server/modules/monitor/mariadbmon/mariadbserver.cc
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@ -2041,15 +2041,14 @@ string MariaDBServer::generate_change_master_cmd(ClusterOperation& op, const Sla
return change_cmd;
}
bool MariaDBServer::redirect_existing_slave_conn(ClusterOperation& op)
bool MariaDBServer::redirect_existing_slave_conn(ClusterOperation& op, const MariaDBServer* old_master,
const MariaDBServer* new_master)
{
StopWatch timer;
const MariaDBServer* old_master = op.demotion_target;
const MariaDBServer* new_master = op.promotion_target;
auto old_conn = slave_connection_status(old_master);
mxb_assert(old_conn);
bool success = false;
// First, just stop the slave connection.
bool stopped = stop_slave_conn(old_conn->name, StopMode::STOP_ONLY, op.time_remaining, op.error_out);
op.time_remaining -= timer.restart();