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flush status;
flush hosts;
flush user_resources;
flush privileges;
select `User`, `Host` from mysql.`user` where `host` like '%\\%%';
User Host
select `User`, `Host` from mysql.`user` where `user` like '192.%';
User Host
select `User`, `Host` from mysql.`user` where `user` like '2001:%';
User Host
select `User`, `Host` from mysql.`user` where `user` like 'santa.claus.%';
User Host
show global status like "connection_errors_%";
Variable_name Value
Connection_errors_accept 0
Connection_errors_internal 0
Connection_errors_max_connections 0
Connection_errors_peer_address 0
Connection_errors_select 0
Connection_errors_tcpwrap 0
connect con1,"127.0.0.1",root,,test,$MASTER_MYPORT,;
select "Con1 is alive";
Con1 is alive
Con1 is alive
select current_user();
current_user()
root@localhost
disconnect con1;
connection default;
SET @saved_dbug = @@GLOBAL.debug_dbug;
set global debug_dbug= "+d,vio_peer_addr_error";
ERROR HY000: Can't get hostname for your address
connection default;
show global status like "connection_errors_%";
Variable_name Value
Connection_errors_accept 0
Connection_errors_internal 0
Connection_errors_max_connections 0
Connection_errors_peer_address 1
Connection_errors_select 0
Connection_errors_tcpwrap 0
"Dumping performance_schema.host_cache"
ERROR HY000: Can't get hostname for your address
connection default;
show global status like "connection_errors_%";
Variable_name Value
Connection_errors_accept 0
Connection_errors_internal 0
Connection_errors_max_connections 0
Connection_errors_peer_address 2
Connection_errors_select 0
Connection_errors_tcpwrap 0
"Dumping performance_schema.host_cache"
SET @@GLOBAL.debug_dbug = @saved_dbug;
flush status;
show global status like "connection_errors_%";
Variable_name Value
Connection_errors_accept 0
Connection_errors_internal 0
Connection_errors_max_connections 0
Connection_errors_peer_address 0
Connection_errors_select 0
Connection_errors_tcpwrap 0
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