use performance_schema;
set @start_read_only= @@global.read_only;
set @start_super_read_only= @@global.super_read_only;
set @orig_sql_mode= @@sql_mode;
set sql_mode= (select replace(@@sql_mode,'NO_AUTO_CREATE_USER',''));
Warnings:
Warning	3090	Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
grant SELECT, UPDATE on performance_schema.* to pfsuser@localhost;
Warnings:
Warning	1287	Using GRANT for creating new user is deprecated and will be removed in future release. Create new user with CREATE USER statement.
set sql_mode= @orig_sql_mode;
Warnings:
Warning	3090	Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
flush privileges;
connect  con1, localhost, pfsuser, , test;
connection default;
set global read_only=0;
connection con1;
select @@global.read_only;
@@global.read_only
0
show grants;
Grants for pfsuser@localhost
GRANT USAGE ON *.* TO 'pfsuser'@'localhost'
GRANT SELECT, UPDATE ON `performance_schema`.* TO 'pfsuser'@'localhost'
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
connection default;
set global read_only=1;
connection con1;
select @@global.read_only;
@@global.read_only
1
show grants;
Grants for pfsuser@localhost
GRANT USAGE ON *.* TO 'pfsuser'@'localhost'
GRANT SELECT, UPDATE ON `performance_schema`.* TO 'pfsuser'@'localhost'
# Update on perf_schema is allowed in read_only mode.
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
connection default;
grant super on *.* to pfsuser@localhost;
flush privileges;
disconnect con1;
connect  con1, localhost, pfsuser, , test;
select @@global.read_only;
@@global.read_only
1
show grants;
Grants for pfsuser@localhost
GRANT SUPER ON *.* TO 'pfsuser'@'localhost'
GRANT SELECT, UPDATE ON `performance_schema`.* TO 'pfsuser'@'localhost'
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
connection default;
set global super_read_only=1;
connection con1;
select @@global.super_read_only;
@@global.super_read_only
1
show grants;
Grants for pfsuser@localhost
GRANT SUPER ON *.* TO 'pfsuser'@'localhost'
GRANT SELECT, UPDATE ON `performance_schema`.* TO 'pfsuser'@'localhost'
select * from performance_schema.setup_instruments;
# Update is allowed in super_read_only on perf schema for
# super user.
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
disconnect con1;
connection default;
set global read_only= @start_read_only;
set global super_read_only= @start_super_read_only;
drop user pfsuser@localhost;
flush privileges;