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Better tracking for slave status bits

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The monitor can now differentiate between slaves with a running
series of slave connections to the master from slaves with broken
links. Both still get the SERVER_SLAVE-flag if 'detect_stale_slave'
is on.

Also, relay servers must be running.
This commit is contained in:
Esa Korhonen
2018-07-23 20:06:15 +03:00
parent 3be975ba5d
commit 89dfc80f86
4 changed files with 147 additions and 116 deletions
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4
server/modules/monitor/mariadbmon/mariadbmon.hh
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@ -211,8 +211,8 @@ private:
MariaDBServer* find_best_reach_server(const ServerArray& candidates);
void calculate_node_reach(MariaDBServer* node);
MariaDBServer* find_master_inside_cycle(ServerArray& cycle_servers);
void assign_master_and_slave();
void assign_slave_and_relay_master(MariaDBServer* node);
void assign_server_roles();
void assign_slave_and_relay_master(MariaDBServer* start_node);
bool master_is_valid(std::string* reason_out);
bool cycle_has_master_server(ServerArray& cycle_servers);
void update_master_cycle_info();