SET @old_max_connections = @@max_connections;
SET @old_log_warnings = @@log_warnings;
SET GLOBAL max_connections=2;
SET GLOBAL LOG_WARNINGS = 0;
connect(localhost,root,,test,port,socket);
ERROR HY000: Too many connections
SET GLOBAL LOG_WARNINGS = 1;
connect(localhost,root,,test,port,socket);
ERROR HY000: Too many connections
SET GLOBAL LOG_WARNINGS = 0;
connect(localhost,root,,test,port,socket);
ERROR HY000: Too many connections
SET GLOBAL max_connections = @old_max_connections;
SET GLOBAL log_warnings = @old_log_warnings;
[log_grep.inc] file: percona.log_connection_error.err pattern: Too many connections
[log_grep.inc] lines:   1
