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v7.1.0 Resource Control 功能测试

 TiDB_C罗  发表于  2023-06-09

集群信息

Cluster type:       tidb
Cluster name:       tidb02
Cluster version:    v7.1.0
Deploy user:        tidb
SSH type:           builtin
Dashboard URL:      http://10.1.6.116:2379/dashboard
Grafana URL:        http://10.1.6.100:3000
ID                 Role          Host         Ports        OS/Arch       Status  Data Dir                           Deploy Dir
10.1.6.100:9093   alertmanager  10.1.6.100  9093/9094    linux/x86_64  Up      /data/tidb-data/alertmanager-9093  /data/tidb-deploy/alertmanager-9093
10.1.6.100:3000   grafana       10.1.6.100  3000         linux/x86_64  Up      -                                  /data/tidb-deploy/grafana-3000
10.1.6.116:2379   pd            10.1.6.116  2379/2380    linux/x86_64  Up|UI   /data/tidb-data/pd-2379            /data/tidb-deploy/pd-2379
10.1.6.212:2379   pd            10.1.6.212  2379/2380    linux/x86_64  Up      /data/tidb-data/pd-2379            /data/tidb-deploy/pd-2379
10.1.6.229:2379   pd            10.1.6.229  2379/2380    linux/x86_64  Up|L    /data/tidb-data/pd-2379            /data/tidb-deploy/pd-2379
10.1.6.100:9090   prometheus    10.1.6.100  9090/12020   linux/x86_64  Up      /data/tidb-data/prometheus-9090    /data/tidb-deploy/prometheus-9090
10.1.6.116:4000   tidb          10.1.6.116  4000/10080   linux/x86_64  Up      -                                  /data/tidb-deploy/tidb-4000
10.1.6.212:4000   tidb          10.1.6.212  4000/10080   linux/x86_64  Up      -                                  /data/tidb-deploy/tidb-4000
10.1.6.229:4000   tidb          10.1.6.229  4000/10080   linux/x86_64  Up      -                                  /data/tidb-deploy/tidb-4000
10.1.6.158:20160  tikv          10.1.6.158  20160/20180  linux/x86_64  Up      /data/tidb-data/tikv-20160         /data/tidb-deploy/tikv-20160
10.1.6.196:20160  tikv          10.1.6.196  20160/20180  linux/x86_64  Up      /data/tidb-data/tikv-20160         /data/tidb-deploy/tikv-20160
10.1.6.86:20160   tikv          10.1.6.86   20160/20180  linux/x86_64  Up      /data/tidb-data/tikv-20160         /data/tidb-deploy/tikv-20160
Total nodes: 12

环境准备

创建资源组

CREATE RESOURCE GROUP IF NOT EXISTS rg100 RU_PER_SEC = 100;
CREATE RESOURCE GROUP IF NOT EXISTS rg500 RU_PER_SEC = 500;
CREATE RESOURCE GROUP IF NOT EXISTS rg1000 RU_PER_SEC = 1000;
CREATE RESOURCE GROUP IF NOT EXISTS rg2000 RU_PER_SEC = 2000;
CREATE RESOURCE GROUP IF NOT EXISTS rg3000 RU_PER_SEC = 3000;

创建用户

CREATE USER user100@'%' identified by 'user100';
CREATE USER user500@'%' identified by 'user500';
CREATE USER user1000@'%' identified by 'user1000';
CREATE USER user2000@'%' identified by 'user2000';
CREATE USER user3000@'%' identified by 'user3000';

绑定用户资源组

ALTER USER user100@'%' RESOURCE GROUP rg100;
ALTER USER user500@'%' RESOURCE GROUP rg500;
ALTER USER user1000@'%' RESOURCE GROUP rg1000;
ALTER USER user2000@'%' RESOURCE GROUP rg2000;
ALTER USER user3000@'%' RESOURCE GROUP rg3000;

给用户授权

GRANT ALL ON test.* TO  user100@'%';
GRANT ALL ON test.* TO  user500@'%';
GRANT ALL ON test.* TO  user1000@'%';
GRANT ALL ON test.* TO  user2000@'%';
GRANT ALL ON test.* TO  user3000@'%';

查看资源组

命令行查看

mysql> select * from INFORMATION_SCHEMA.RESOURCE_GROUPS;
+---------+------------+----------+-----------+
| NAME    | RU_PER_SEC | PRIORITY | BURSTABLE |
+---------+------------+----------+-----------+
| default | UNLIMITED  | MEDIUM   | YES       |
| rg100   | 100        | MEDIUM   | NO        |
| rg1000  | 1000       | MEDIUM   | NO        |
| rg2000  | 2000       | MEDIUM   | NO        |
| rg3000  | 3000       | MEDIUM   | NO        |
| rg500   | 500        | MEDIUM   | NO        |
+---------+------------+----------+-----------+
6 rows in set (0.00 sec)

Dashboard查看

image.png

基准测试

使用tiup bench tpcc使用不同的用户压测

初始化数据

tiup bench tpcc --warehouses 4 --time 5m prepare -H 10.1.6.229 -P 4000 --user user100 -p 'user100'

以下几种场景

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user100 -p 'user100'

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user500 -p 'user500'

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user1000 -p 'user1000'

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user2000 -p 'user2000'

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user3000 -p 'user3000'

image.png

image.png

每次的qps基本和RU_PER_SEC的数量一一对应

再测一下没有资源限制的用户

CREATE USER user@'%' identified by 'user';
GRANT ALL ON test.* TO  user@'%';

tiup bench tpcc --warehouses 4 --time 5m run -H 10.1.6.229 -P 4000 --user user -p 'user'

image.png

image.png

问题与建议

问题1:估算容量过大

从上图可以看到tpcc的估算容量是69768,而我使用无资源的用户最高可以跑到3000RU再乘以3个tidb,也才9000.

问题2:mysql.user User_attributes列的显示问题

新建用户该属性为{}

绑定资源组后为{"resource_group": "rg100"}

解绑资源组后又为{"resource_group": ""}

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| user100                  | %     | {"resource_group": "rg100"}  |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {}                           |
+--------------------------+-------+------------------------------+
9 rows in set (0.00 sec)

mysql> alter user user resource group rg100;
Query OK, 0 rows affected (0.02 sec)

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| user100                  | %     | {"resource_group": "rg100"}  |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {"resource_group": "rg100"}  |
+--------------------------+-------+------------------------------+
9 rows in set (0.01 sec)

mysql> alter user user resource group ``;
Query OK, 0 rows affected (0.02 sec)

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| risk_control_center_user | %     | {"resource_group": ""}       |
| user100                  | %     | {"resource_group": "rg100"}  |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {"resource_group": ""}       |
+--------------------------+-------+------------------------------+

建议新建用户初始值、解绑资源后再还原设置为{"resource_group": "default"}

问题3:删除资源需先与用户解绑,如与多个用户绑定,只显示一个用户

mysql> alter user user resource group rg100;
Query OK, 0 rows affected (0.02 sec)

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| user100                  | %     | {"resource_group": "rg100"}  |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {"resource_group": "rg100"}  |
+--------------------------+-------+------------------------------+
9 rows in set (0.00 sec)

mysql> select * from INFORMATION_SCHEMA.RESOURCE_GROUPS;
+---------+------------+----------+-----------+
| NAME    | RU_PER_SEC | PRIORITY | BURSTABLE |
+---------+------------+----------+-----------+
| default | UNLIMITED  | MEDIUM   | YES       |
| rg100   | 100        | MEDIUM   | NO        |
| rg1000  | 1000       | MEDIUM   | NO        |
| rg2000  | 2000       | MEDIUM   | NO        |
| rg3000  | 3000       | MEDIUM   | NO        |
| rg500   | 500        | MEDIUM   | NO        |
+---------+------------+----------+-----------+
6 rows in set (0.00 sec)

mysql> drop resource group rg100;
ERROR 1105 (HY000): user [user] depends on the resource group to drop
mysql> alter user user resource group ``;
Query OK, 0 rows affected (0.02 sec)

mysql> drop resource group rg100;
ERROR 1105 (HY000): user [user100] depends on the resource group to drop

这里有两个用户使用到了rg100,删除时只显示了一个用户,该用户user解绑后,再删除才显示另一个用户user100。而且这里显示的用是只有用户名没有host的信息。

问题4:无法实时感知资源的变更

tiup bench tpcc --warehouses 4 --time 10m run -H 10.1.6.229 -P 4000 --user user100 -p 'user100'

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| user100                  | %     | {"resource_group": "rg100"}  |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {"resource_group": ""}       |
+--------------------------+-------+------------------------------+
9 rows in set (0.00 sec)

mysql> alter user user100 resource group rg3000;
Query OK, 0 rows affected (0.02 sec)

mysql> select user,host,User_attributes from mysql.user;
+--------------------------+-------+------------------------------+
| user                     | host  | User_attributes              |
+--------------------------+-------+------------------------------+
| root                     | %     | NULL                         |
| user100                  | %     | {"resource_group": "rg3000"} |
| user500                  | %     | {"resource_group": "rg500"}  |
| user1000                 | %     | {"resource_group": "rg1000"} |
| user2000                 | %     | {"resource_group": "rg2000"} |
| user3000                 | %     | {"resource_group": "rg3000"} |
| user                     | %     | {"resource_group": ""}       |
+--------------------------+-------+------------------------------+
9 rows in set (0.00 sec)

image.png

qps并未变化。

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