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MXS-1922: Show GTIDs for Galera nodes

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Galera generates GTIDs even if they are unique across all nodes and it
makes sense to display this.
This commit is contained in:
Markus Mäkelä 2019-04-17 15:17:09 +03:00
parent 524a083203
commit a471417150
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GPG Key ID: 72D48FCE664F7B19
2 changed files with 44 additions and 2 deletions
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43
server/modules/monitor/galeramon/galeramon.cc
View File

@ -29,6 +29,7 @@
#include <maxscale/modinfo.h>
#include <maxscale/mysql_utils.hh>
#include <maxscale/secrets.h>
#include <maxsql/mariadb.hh>
#define DONOR_NODE_NAME_MAX_LEN 60
#define DONOR_LIST_SET_VAR "SET GLOBAL wsrep_sst_donor = \""
@ -101,6 +102,25 @@ json_t* GaleraMonitor::diagnostics_json() const
json_object_set_new(rval, "cluster_size", json_integer(m_cluster_size));
}
json_t* arr = json_array();
for (auto ptr : m_servers)
{
auto it = m_info.find(ptr);
if (it != m_info.end())
{
json_t* obj = json_object();
json_object_set_new(obj, "name", json_string(it->first->server->name()));
json_object_set_new(obj, "gtid_current_pos", json_string(it->second.gtid_current_pos.c_str()));
json_object_set_new(obj, "gtid_binlog_pos", json_string(it->second.gtid_binlog_pos.c_str()));
json_object_set_new(obj, "read_only", json_boolean(it->second.read_only));
json_array_append_new(arr, obj);
}
}
json_object_set_new(rval, "server_info", arr);
return rval;
}
@ -130,6 +150,24 @@ bool GaleraMonitor::has_sufficient_permissions()
return test_permissions("SHOW STATUS LIKE 'wsrep_local_state'");
}
void get_gtid(MonitorServer* srv, GaleraNode* info)
{
if (mxs_mysql_query(srv->con, "SELECT @@gtid_current_pos, @@gtid_binlog_pos, @@read_only") == 0)
{
if (auto result = mysql_store_result(srv->con))
{
mxq::QueryResult res(result);
if (res.next_row())
{
info->gtid_current_pos = res.get_string(0);
info->gtid_binlog_pos = res.get_string(1);
info->read_only = res.get_bool(2);
}
}
}
}
void GaleraMonitor::update_server_status(MonitorServer* monitored_server)
{
MYSQL_ROW row;
@ -218,11 +256,12 @@ void GaleraMonitor::update_server_status(MonitorServer* monitored_server)
}
}
mysql_free_result(result);
get_gtid(monitored_server, &info);
monitored_server->server->node_id = info.joined ? info.local_index : -1;
m_info[monitored_server] = info;
mysql_free_result(result);
}
else
{

3
server/modules/monitor/galeramon/galeramon.hh
View File

@ -30,6 +30,9 @@ struct GaleraNode
int local_state; /**< Node state */
int cluster_size; /**< The cluster size*/
std::string cluster_uuid; /**< Cluster UUID */
std::string gtid_binlog_pos;
std::string gtid_current_pos;
bool read_only = false;
};
typedef std::unordered_map<mxs::MonitorServer*, GaleraNode> NodeMap;