Preface
 
    I've implemented ProxySQL on PXC yesterday but got some errors when configured query rules.I'm gonna do it again in my master-slave environment again.Let's see the procedure.
 
Procedure
 
Start ProxySQL.
  1.  [root@zlm1 :: /var/lib]
  2.  #service proxysql start
  3.  Starting ProxySQL: ProxySQL is already running.
  4.  
  5.  [root@zlm1 :: /var/lib]
  6.  #ps aux|grep proxysql
  7.  root         0.0  0.5     ?        S    :   : proxysql -c /etc/proxysql.cnf -D /var/lib/proxysql
  8.  root         0.0  2.0   ?        Sl   :   : proxysql -c /etc/proxysql.cnf -D /var/lib/proxysql
  9.  root        0.0  0.0     pts/    R+   :   : grep --color=auto proxysql
Login ProxySQL configure the hostgroups.
  1.  [root@zlm1 :: ~]
  2.  #mysql -uadmin -padmin -h127.0.0. -P6032
  3.  mysql: [Warning] Using a password on the command line interface can be insecure.
  4.  Welcome to the MySQL monitor.  Commands end with ; or \g.
  5.  Your MySQL connection id is
  6.  Server version: 5.5. (ProxySQL Admin Module)
  7.  
  8.  Copyright (c) , , Oracle and/or its affiliates. All rights reserved.
  9.  
  10.  Oracle is a registered trademark of Oracle Corporation and/or its
  11.  affiliates. Other names may be trademarks of their respective
  12.  owners.
  13.  
  14.  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  15.  
  16.  admin@127.0.0.1: [(none)]>select * from mysql_replication_hostgroups;
  17.  Empty set (0.00 sec)
  18.  
  19.  admin@127.0.0.1: [(none)]>insert into mysql_replication_hostgroups(writer_hostgroup,reader_hostgroup) values(,);
  20.  Query OK,  row affected (0.00 sec)
  21.  
  22.  admin@127.0.0.1: [(none)]>select * from mysql_replication_hostgroups;
  23.  +------------------+------------------+---------+
  24.  | writer_hostgroup | reader_hostgroup | comment |
  25.  +------------------+------------------+---------+
  26.  |                |                |         |
  27.  +------------------+------------------+---------+
  28.   row in set (0.00 sec)
  29.  
  30.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_replication_hostgroups;
  31.  Empty set (0.00 sec)
  32.  
  33.  admin@127.0.0.1: [(none)]>select * from disk.mysql_replication_hostgroups;
  34.  Empty set (0.00 sec)
  35.  
  36.  admin@127.0.0.1: [(none)]>load mysql servers to runtime;save mysql servers to disk;
  37.  Query OK,  rows affected (0.00 sec)
  38.  
  39.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_replication_hostgroups;
  40.  +------------------+------------------+---------+
  41.  | writer_hostgroup | reader_hostgroup | comment |
  42.  +------------------+------------------+---------+
  43.  |                |                |         |
  44.  +------------------+------------------+---------+
  45.   row in set (0.00 sec)
  46.  
  47.  admin@127.0.0.1: [(none)]>select * from disk.mysql_replication_hostgroups;
  48.  +------------------+------------------+---------+
  49.  | writer_hostgroup | reader_hostgroup | comment |
  50.  +------------------+------------------+---------+
  51.  |                |                |         |
  52.  +------------------+------------------+---------+
  53.   row in set (0.00 sec)
Configure the mysql servers.
  1.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  2.  Empty set (0.00 sec)
  3.  
  4.  admin@127.0.0.1: [(none)]>insert into mysql_servers(hostgroup_id,hostname,max_connections,max_replication_lag) values(,'192.168.56.100',,);
  5.  Query OK,  row affected (0.00 sec)
  6.  
  7.  admin@127.0.0.1: [(none)]>insert into mysql_servers(hostgroup_id,hostname,max_connections,max_replication_lag) values(,'192.168.56.101',,);
  8.  Query OK,  row affected (0.00 sec)
  9.  
  10.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  11.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  12.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  13.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  14.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  15.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  16.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  17.   rows in set (0.00 sec)
  18.  
  19.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_servers;
  20.  Empty set (0.00 sec)
  21.  
  22.  admin@127.0.0.1: [(none)]>select * from disk.mysql_servers;
  23.  Empty set (0.00 sec)
  24.  
  25.  admin@127.0.0.1: [(none)]>load mysql servers to runtime;save mysql servers to disk;
  26.  Query OK,  rows affected (0.00 sec)
  27.  
  28.  Query OK,  rows affected (0.05 sec)
  29.  
  30.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_servers;
  31.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  32.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  33.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  34.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  35.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  36.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  37.   rows in set (0.00 sec)
  38.  
  39.  //Why does the hostgroup_id in table "runtime_mysql_servers" still "20"?
  40.  
  41.  admin@127.0.0.1: [(none)]>select * from disk.mysql_servers;
  42.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  43.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  44.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  45.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  46.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  47.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  48.   rows in set (0.00 sec)
  49.  
  50.  //The hostgroup_id in table "disk.mysql_servers" has taken effect.
  51.  
  52.  //Check the variables of "read_only" and "super_read_only".
  53.  zlm@192.168.56.100: [(none)]>show variables like '%read_only%';
  54.  +-----------------------+-------+
  55.  | Variable_name         | Value |
  56.  +-----------------------+-------+
  57.  | innodb_read_only      | OFF   |
  58.  | read_only             | OFF   |
  59.  | super_read_only       | OFF   |
  60.  | transaction_read_only | OFF   |
  61.  | tx_read_only          | OFF   |
  62.  +-----------------------+-------+
  63.   rows in set (0.00 sec)
  64.  
  65.  admin@127.0.0.1: [(none)]>load mysql servers to runtime;
  66.  Query OK,  rows affected (0.00 sec)
  67.  
  68.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_servers;
  69.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  70.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  71.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  72.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  73.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  74.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  75.   rows in set (0.00 sec)
  76.  
  77.  //It's still "20".
  78.  
  79.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  80.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  81.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  82.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  83.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  84.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  85.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  86.   rows in set (0.00 sec)
  87.  
  88.  //The "hostgroup_id" in mysql_serves also turned to be "20".Why does it happen?It's the reason why my query rule did not take effect yesterday.
  89.  
  90.  admin@127.0.0.1: [(none)]>SELECT * FROM monitor.mysql_server_connect_log ORDER BY time_start_us DESC LIMIT ;
  91.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  92.  | hostname       | port | time_start_us    | connect_success_time_us | connect_error                                                 |
  93.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  94.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  95.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  96.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  97.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  98.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  99.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  100.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  101.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  102.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  103.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  104.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  105.   rows in set (0.00 sec)
  106.  
  107.  //It seems the privileges was configurated abnormally.
  108.  
  109.  zlm@192.168.56.100: [(none)]>select user,host from mysql.user;
  110.  +---------------+--------------+
  111.  | user          | host         |
  112.  +---------------+--------------+
  113.  | repl          | 192.168..% |
  114.  | zlm           | 192.168..% |
  115.  | bkuser        | localhost    |
  116.  | monitor       | localhost    |
  117.  | mysql.session | localhost    |
  118.  | mysql.sys     | localhost    |
  119.  | root          | localhost    |
  120.  +---------------+--------------+
  121.   rows in set (0.00 sec)
  122.  
  123.  zlm@192.168.56.100: [(none)]>drop user monitor@localhost;
  124.  Query OK,  rows affected (0.00 sec)
  125.  
  126.  zlm@192.168.56.100: [(none)]>grant all privileges on *.* to monitor@'%' identified by 'monitor';
  127.  ERROR  (): Access denied for user 'zlm'@'192.168.56.%' (using password: YES)
  128.  zlm@192.168.56.100: [(none)]>exit
  129.  Bye
  130.  
  131.  [root@zlm1 :: /data/backup]
  132.  #mysql -uroot -pPassw0rd -hlocalhost -S /tmp/mysql3306.sock
  133.  mysql: [Warning] Using a password on the command line interface can be insecure.
  134.  Welcome to the MySQL monitor.  Commands end with ; or \g.
  135.  Your MySQL connection id is
  136.  Server version: 5.7.-log MySQL Community Server (GPL)
  137.  
  138.  Copyright (c) , , Oracle and/or its affiliates. All rights reserved.
  139.  
  140.  Oracle is a registered trademark of Oracle Corporation and/or its
  141.  affiliates. Other names may be trademarks of their respective
  142.  owners.
  143.  
  144.  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  145.  
  146.  root@localhost:mysql3306.sock [(none)]>grant all privileges on *.* to monitor@'%' identified by 'monitor';
  147.  Query OK,  rows affected,  warning (0.00 sec)
  148.  
  149.  root@localhost:mysql3306.sock [(none)]>select user,host from mysql.user;
  150.  +---------------+--------------+
  151.  | user          | host         |
  152.  +---------------+--------------+
  153.  | monitor       | %            |
  154.  | repl          | 192.168..% |
  155.  | zlm           | 192.168..% |
  156.  | bkuser        | localhost    |
  157.  | mysql.session | localhost    |
  158.  | mysql.sys     | localhost    |
  159.  | root          | localhost    |
  160.  +---------------+--------------+
  161.   rows in set (0.00 sec)
  162.  
  163.  admin@127.0.0.1: [(none)]>SELECT * FROM monitor.mysql_server_connect_log ORDER BY time_start_us DESC LIMIT ;
  164.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  165.  | hostname       | port | time_start_us    | connect_success_time_us | connect_error                                                 |
  166.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  167.  | 192.168.56.101 |  |  |                     | NULL                                                          |
  168.  | 192.168.56.100 |  |  |                      | NULL                                                          |
  169.  | 192.168.56.100 |  |  |                      | NULL                                                          |
  170.  | 192.168.56.101 |  |  |                     | NULL                                                          |
  171.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  172.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  173.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  174.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  175.  | 192.168.56.101 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  176.  | 192.168.56.100 |  |  |                        | Access denied for user 'monitor'@'zlm1' (using password: YES) |
  177.  +----------------+------+------------------+-------------------------+---------------------------------------------------------------+
  178.   rows in set (0.00 sec)
  179.  
  180.  //The monitor became normal.
  181.  
  182.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  183.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  184.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  185.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  186.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  187.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  188.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  189.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  190.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  191.   rows in set (0.00 sec)
  192.  
  193.  admin@127.0.0.1: [(none)]>delete from mysql_servers;
  194.  Query OK,  rows affected (0.00 sec)
  195.  
  196.  admin@127.0.0.1: [(none)]>insert into mysql_servers(hostgroup_id,hostname,max_connections,max_replication_lag) values(,'192.168.56.100',,),(,'192.168.56.101',,);
  197.  Query OK,  rows affected (0.00 sec)
  198.  
  199.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  200.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  201.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  202.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  203.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  204.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  205.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  206.   rows in set (0.00 sec)
  207.  
  208.  admin@127.0.0.1: [(none)]>load mysql servers to runtime;save mysql servers to disk;
  209.  Query OK,  rows affected (0.00 sec)
  210.  
  211.  Query OK,  rows affected (0.02 sec)
  212.  
  213.  admin@127.0.0.1: [(none)]>select * from mysql_servers;
  214.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  215.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  216.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  217.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  218.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  219.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  220.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  221.   rows in set (0.00 sec)
  222.  
  223.  //Why there're three records in table "mysql_servers"?
  224.  
  225.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_servers;
  226.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  227.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  228.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  229.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  230.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  231.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  232.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  233.   rows in set (0.00 sec)
  234.  
  235.  admin@127.0.0.1: [(none)]>select * from disk.mysql_servers;
  236.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  237.  | hostgroup_id | hostname       | port | status | weight | compression | max_connections | max_replication_lag | use_ssl | max_latency_ms | comment |
  238.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  239.  |            | 192.168.56.100 |  | ONLINE |       |            |              |                  |        |               |         |
  240.  |            | 192.168.56.101 |  | ONLINE |       |            |              |                  |        |               |         |
  241.  +--------------+----------------+------+--------+--------+-------------+-----------------+---------------------+---------+----------------+---------+
  242.   rows in set (0.00 sec)
  243.  
  244.  admin@127.0.0.1: [(none)]>show variables like '%also%';
  245.  +-------------------------------------+-------+
  246.  | Variable_name                       | Value |
  247.  +-------------------------------------+-------+
  248.  | mysql-monitor_writer_is_also_reader | true  |
  249.  +-------------------------------------+-------+
  250.   row in set (0.00 sec)
  251.  
  252.  admin@127.0.0.1: [(none)]>SELECT * FROM monitor.mysql_server_connect_log ORDER BY time_start_us DESC LIMIT ;
  253.  +----------------+------+------------------+-------------------------+---------------+
  254.  | hostname       | port | time_start_us    | connect_success_time_us | connect_error |
  255.  +----------------+------+------------------+-------------------------+---------------+
  256.  | 192.168.56.100 |  |  |                      | NULL          |
  257.  | 192.168.56.101 |  |  |                     | NULL          |
  258.  | 192.168.56.101 |  |  |                     | NULL          |
  259.  | 192.168.56.100 |  |  |                      | NULL          |
  260.  | 192.168.56.101 |  |  |                     | NULL          |
  261.  | 192.168.56.100 |  |  |                      | NULL          |
  262.  | 192.168.56.100 |  |  |                     | NULL          |
  263.  | 192.168.56.101 |  |  |                      | NULL          |
  264.  | 192.168.56.101 |  |  |                     | NULL          |
  265.  | 192.168.56.100 |  |  |                      | NULL          |
  266.  +----------------+------+------------------+-------------------------+---------------+
  267.   rows in set (0.00 sec)
Configure the mysql users.
  1.  admin@127.0.0.1: [(none)]>select * from mysql_users;
  2.  Empty set (0.00 sec)
  3.  
  4.  admin@127.0.0.1: [(none)]>insert into mysql_users(username,password,active,default_hostgroup,default_schema) values('zlm','zlmzlm',,,'zlm');
  5.  Query OK,  row affected (0.00 sec)
  6.  
  7.  admin@127.0.0.1: [(none)]>select * from mysql_users;
  8.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  9.  | username | password | active | use_ssl | default_hostgroup | default_schema | schema_locked | transaction_persistent | fast_forward | backend | frontend | max_connections |
  10.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  11.  | zlm      | zlmzlm   |       |        |                 | zlm            |              |                       |             |        |         |            |
  12.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  13.   row in set (0.00 sec)
  14.  
  15.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_users;
  16.  Empty set (0.00 sec)
  17.  
  18.  admin@127.0.0.1: [(none)]>select * from disk.mysql_users;
  19.  Empty set (0.00 sec)
  20.  
  21.  admin@127.0.0.1: [(none)]>load mysql users to runtime;save mysql users to disk;
  22.  Query OK,  rows affected (0.00 sec)
  23.  
  24.  Query OK,  rows affected (0.01 sec)
  25.  
  26.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_users;
  27.  +----------+-------------------------------------------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  28.  | username | password                                  | active | use_ssl | default_hostgroup | default_schema | schema_locked | transaction_persistent | fast_forward | backend | frontend | max_connections |
  29.  +----------+-------------------------------------------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  30.  | zlm      | *512FB3FAA6F522E351929CAC70AD8EBB0F5901B6 |       |        |                 | zlm            |              |                       |             |        |         |            |
  31.  | zlm      | *512FB3FAA6F522E351929CAC70AD8EBB0F5901B6 |       |        |                 | zlm            |              |                       |             |        |         |            |
  32.  +----------+-------------------------------------------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  33.   rows in set (0.00 sec)
  34.  
  35.  admin@127.0.0.1: [(none)]>select * from disk.mysql_users;
  36.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  37.  | username | password | active | use_ssl | default_hostgroup | default_schema | schema_locked | transaction_persistent | fast_forward | backend | frontend | max_connections |
  38.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  39.  | zlm      | zlmzlm   |       |        |                 | zlm            |              |                       |             |        |         |            |
  40.  +----------+----------+--------+---------+-------------------+----------------+---------------+------------------------+--------------+---------+----------+-----------------+
  41.   row in set (0.00 sec)
Configure the query rules.
  1.  admin@127.0.0.1: [(none)]>select * from mysql_query_rules;
  2.  Empty set (0.00 sec)
  3.  
  4.  admin@127.0.0.1: [(none)]>insert into mysql_query_rules(active,username,match_pattern,schemaname,destination_hostgroup,apply) values(,'zlm','^select','zlm',,);
  5.  Query OK,  row affected (0.00 sec)
  6.  
  7.  admin@127.0.0.1: [(none)]>select active,username,match_pattern,schemaname,destination_hostgroup,apply from mysql_query_rules;
  8.  +--------+----------+---------------+------------+-----------------------+-------+
  9.  | active | username | match_pattern | schemaname | destination_hostgroup | apply |
  10.  +--------+----------+---------------+------------+-----------------------+-------+
  11.  |       | zlm      | ^select       | zlm        |                     |      |
  12.  +--------+----------+---------------+------------+-----------------------+-------+
  13.   row in set (0.00 sec)
  14.  
  15.  admin@127.0.0.1: [(none)]>select * from runtime_mysql_query_rules;
  16.  Empty set (0.00 sec)
  17.  
  18.  admin@127.0.0.1: [(none)]>select * from disk.mysql_query_rules;
  19.  Empty set (0.00 sec)
  20.  
  21.  admin@127.0.0.1: [(none)]>load mysql query rules to runtime;save mysql query rules to disk;
  22.  Query OK,  rows affected (0.00 sec)
  23.  
  24.  admin@127.0.0.1: [(none)]>select active,username,match_pattern,schemaname,destination_hostgroup,apply from runtime_mysql_query_rules;
  25.  +--------+----------+---------------+------------+-----------------------+-------+
  26.  | active | username | match_pattern | schemaname | destination_hostgroup | apply |
  27.  +--------+----------+---------------+------------+-----------------------+-------+
  28.  |       | zlm      | ^select       | zlm        |                     |      |
  29.  +--------+----------+---------------+------------+-----------------------+-------+
  30.   row in set (0.00 sec)
  31.  
  32.  admin@127.0.0.1: [(none)]>select active,username,match_pattern,schemaname,destination_hostgroup,apply from disk.mysql_query_rules;
  33.  +--------+----------+---------------+------------+-----------------------+-------+
  34.  | active | username | match_pattern | schemaname | destination_hostgroup | apply |
  35.  +--------+----------+---------------+------------+-----------------------+-------+
  36.  |       | zlm      | ^select       | zlm        |                     |      |
  37.  +--------+----------+---------------+------------+-----------------------+-------+
  38.   row in set (0.00 sec)
Test whether proxy can seperate writing and reading operations.
  1.  admin@127.0.0.1: [(none)]>show create table stats.stats_mysql_query_digest\G
  2.  *************************** . row ***************************
  3.         table: stats_mysql_query_digest
  4.  Create Table: CREATE TABLE stats_mysql_query_digest (
  5.      hostgroup INT,
  6.      schemaname VARCHAR NOT NULL,
  7.      username VARCHAR NOT NULL,
  8.      digest VARCHAR NOT NULL,
  9.      digest_text VARCHAR NOT NULL,
  10.      count_star INTEGER NOT NULL,
  11.      first_seen INTEGER NOT NULL,
  12.      last_seen INTEGER NOT NULL,
  13.      sum_time INTEGER NOT NULL,
  14.      min_time INTEGER NOT NULL,
  15.      max_time INTEGER NOT NULL,
  16.      PRIMARY KEY(hostgroup, schemaname, username, digest))
  17.   row in set (0.00 sec)
  18.  
  19.  admin@127.0.0.1: [(none)]>select hostgroup,schemaname,username,substr(digest_text,,-),count_star from stats_mysql_query_digest_reset;
  20.  Empty set (0.00 sec)
  21.  
  22.  [root@zlm1 :: /data/backup]
  23.  #mysql -uzlm -pzlmzlm -h192.168.56. -P6033
  24.  mysql: [Warning] Using a password on the command line interface can be insecure.
  25.  Welcome to the MySQL monitor.  Commands end with ; or \g.
  26.  Your MySQL connection id is
  27.  Server version: 5.5. (ProxySQL)
  28.  
  29.  Copyright (c) , , Oracle and/or its affiliates. All rights reserved.
  30.  
  31.  Oracle is a registered trademark of Oracle Corporation and/or its
  32.  affiliates. Other names may be trademarks of their respective
  33.  owners.
  34.  
  35.  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  36.  
  37.  zlm@192.168.56.100: [(none)]>show tables;
  38.  +---------------+
  39.  | Tables_in_zlm |
  40.  +---------------+
  41.  | test          |
  42.  +---------------+
  43.   row in set (0.00 sec)
  44.  
  45.  zlm@192.168.56.100: [(none)]>select * from test;
  46.  +------+------+
  47.  | id   | name |
  48.  +------+------+
  49.  |     | aaa  |
  50.  |     | bbb  |
  51.  |     | ccc  |
  52.  +------+------+
  53.   rows in set (0.00 sec)
  54.  
  55.  zlm@192.168.56.100: [(none)]>insert into test values(,'eee');
  56.  Query OK,  row affected (0.00 sec)
  57.  
  58.  zlm@192.168.56.100: [(none)]>update test set name='ddd' where id=;
  59.  Query OK,  row affected (0.00 sec)
  60.  Rows matched:   Changed:   Warnings: 
  61.  
  62.  zlm@192.168.56.100: [(none)]>select * from test;
  63.  +------+------+
  64.  | id   | name |
  65.  +------+------+
  66.  |     | aaa  |
  67.  |     | bbb  |
  68.  |     | ccc  |
  69.  |     | ddd  |
  70.  +------+------+
  71.   rows in set (0.00 sec)
  72.  
  73.  admin@127.0.0.1: [(none)]>select hostgroup,schemaname,username,substr(digest_text,,-),count_star from stats_mysql_query_digest;
  74.  +-----------+------------+----------+-----------------------------------+------------+
  75.  | hostgroup | schemaname | username | substr(digest_text,,-)      | count_star |
  76.  +-----------+------------+----------+-----------------------------------+------------+
  77.  |         | zlm        | zlm      | update test set name=? where id=? |           |
  78.  |         | zlm        | zlm      | select * from test                |           |
  79.  |         | zlm        | zlm      | show tables                       |           |
  80.  |         | zlm        | zlm      | select USER()                     |           |
  81.  |         | zlm        | zlm      | insert into test values(?,?)      |           |
  82.  |         | zlm        | zlm      | select @@version_comment limit ?  |           |
  83.  +-----------+------------+----------+-----------------------------------+------------+
  84.   rows in set (0.00 sec)
  85.  
  86.  //What baffled me is that why the "select USER()" and "select @@version_comment limit ?" were not in the hostgroup "20"?
  87.  
  88.  zlm@192.168.56.100: [(none)]>select @@hostname;
  89.  +------------+
  90.  | @@hostname |
  91.  +------------+
  92.  | zlm2       |
  93.  +------------+
  94.   row in set (0.00 sec)
  95.  
  96.  //The select operation has been executed on slave zlm2.
  97.  
  98.  admin@127.0.0.1: [(none)]>select hostgroup,schemaname,username,substr(digest_text,,-),count_star from stats_mysql_query_digest;
  99.  +-----------+------------+----------+-----------------------------------+------------+
  100.  | hostgroup | schemaname | username | substr(digest_text,,-)      | count_star |
  101.  +-----------+------------+----------+-----------------------------------+------------+
  102.  |         | zlm        | zlm      | update test set name=? where id=? |           |
  103.  |         | zlm        | zlm      | select * from test                |           |
  104.  |         | zlm        | zlm      | show tables                       |           |
  105.  |         | zlm        | zlm      | select USER()                     |           |
  106.  |         | zlm        | zlm      | select @@hostname                 |           |
  107.  |         | zlm        | zlm      | insert into test values(?,?)      |           |
  108.  |         | zlm        | zlm      | select @@version_comment limit ?  |           |
  109.  +-----------+------------+----------+-----------------------------------+------------+
  110.   rows in set (0.00 sec)
  111.  
  112.  //The new statement of "select @@hostname" was put into hostgroup "20" correctly.
 

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