The reason I did this was because I wanted to check out the latest MariaDB features primarily the following:
Multi-source replication
Make sure you have different server-ids set per server to start with.
Just started so nothing here should be expected
> select @@default_master_connection;
+-----------------------------+
| @@default_master_connection |
+-----------------------------+
| |
+-----------------------------+
So gather information from a master server
> show master status\G
*************************** 1. row ***************************
File: percona_mysql-bin.000005
Position: 107
Now update the Mariadb 10.0.2 slave
SET @@default_master_connection='percona';
CHANGE MASTER 'percona' TO MASTER_HOST = '127.0.0.1',
MASTER_USER = 'root',
MASTER_PASSWORD = '',
MASTER_PORT = 3307 ,
MASTER_LOG_FILE = 'percona_mysql-bin.000005',
MASTER_LOG_POS = 107
> select @@default_master_connection;+-----------------------------+| @@default_master_connection |+-----------------------------+| percona |+-----------------------------+OK Now let me add the second master
SET @@default_master_connection='oracle';
CHANGE MASTER 'oracle' TO MASTER_HOST = '127.0.0.1',
MASTER_USER = 'root',
MASTER_PASSWORD = '',
MASTER_PORT = 3309 ,
MASTER_LOG_FILE = 'oracle_mysql-bin.000009',
MASTER_LOG_POS = 5453
Next you can check the status to ensure both settings are set up.
>SHOW ALL SLAVES STATUS\G
*************************** 1. row ***************************
Connection_name: oracle
Slave_SQL_State:
Slave_IO_State:
Master_Host: 127.0.0.1
Master_User: root
Master_Port: 3309
Connect_Retry: 60
Master_Log_File: oracle_mysql-bin.000009
Read_Master_Log_Pos: 5453
Relay_Log_File: relay-bin-oracle.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: oracle_mysql-bin.000009
Slave_IO_Running: No
Slave_SQL_Running: No
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 5453
Relay_Log_Space: 248
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 0
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: 0
Retried_transactions: 0
Max_relay_log_size: 1073741824
Executed_log_entries: 0
Slave_received_heartbeats: 0
Slave_heartbeat_period: 1800.000
Gtid_Pos:
*************************** 2. row ***************************
Connection_name: percona
Slave_SQL_State:
Slave_IO_State:
Master_Host: 127.0.0.1
Master_User: root
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: percona_mysql-bin.000005
Read_Master_Log_Pos: 107
Relay_Log_File: relay-bin-percona.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: percona_mysql-bin.000005
Slave_IO_Running: No
Slave_SQL_Running: No
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 107
Relay_Log_Space: 248
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 0
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: 0
Retried_transactions: 0
Max_relay_log_size: 1073741824
Executed_log_entries: 0
Slave_received_heartbeats: 0
Slave_heartbeat_period: 1800.000
Gtid_Pos:
OK time to start it
> START ALL SLAVES;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
root@localhost [(none)]> show warnings;
+-------+------+-------------------------+
| Level | Code | Message |
+-------+------+-------------------------+
| Note | 1937 | SLAVE 'percona' started |
| Note | 1937 | SLAVE 'oracle' started |
+-------+------+-------------------------+
Relay_Master_Log_File: percona_mysql-bin.000005 Slave_IO_Running: Yes Slave_SQL_Running: Yes
Relay_Master_Log_File: oracle_mysql-bin.000009 Slave_IO_Running: Yes Slave_SQL_Running: Yes
So let us test some situations.
Via Percona master
use test;
CREATE TABLE `multi_test` (
`time_recorded` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB;
MariaDB Slave
> show tables;
+----------------+
| Tables_in_test |
+----------------+
| multi_test |
+----------------+
Via Oracle MySQL master
use test;
CREATE TABLE `multi_test2` (
`time_recorded` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB;
MariaDB Slave
> show tables;
+----------------+
| Tables_in_test |
+----------------+
| multi_test |
| multi_test2 |
+----------------+
OK that works !
SHOW EXPLAIN
This is rather straight forward but nice to catch a query as it is running.
> show explain for 17;
+------+-------------+--------+-------+---------------+---------+---------+------+------+-------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+------+-------------+--------+-------+---------------+---------+---------+------+------+-------------+
| 1 | SIMPLE | sbtest | range | PRIMARY | PRIMARY | 4 | NULL | 99 | Using where |
+------+-------------+--------+-------+---------------+---------+---------+------+------+-------------+
1 row in set, 1 warning (0.00 sec)
root@localhost [test]> show warnings;
+-------+------+----------------------------------------------------------+
| Level | Code | Message |
+-------+------+----------------------------------------------------------+
| Note | 1003 | SELECT SUM(K) from sbtest where id between 4997 and 5096 |
+-------+------+----------------------------------------------------------+
Side notes:
Cassandra Storage Engine
I am curious about this and how it relates to the NoSQL and Innodb solution via memcache.
I have a post on that here: http://anothermysqldba.blogspot.com/2013/04/nosql-php-memcache-innodb-mysql.html
I will have to come back to this as I set up Cassandra on my environment. I am not eager but curious.
User Feedback Plugin
The documentation "Quick start" says to add to the my.cnf file under [mysqld]
[mysqld]
feedback=ON
port = 3310
socket = /tmp/mariadb-10.0.2.sock
130513 17:45:10 InnoDB: 10.0.2-MariaDB started; log sequence number 20183690
130513 17:45:10 [ERROR] /usr/local/mariadb-10.0.2/bin/mysqld: unknown variable 'feedback=ON'
This worked a lot easier and as expect this way once I removed the "Quick start" instructions.
> INSTALL PLUGIN feedback SONAME 'feedback.so';
> SELECT plugin_status FROM information_schema.plugins WHERE plugin_name = 'feedback';
+---------------+
| plugin_status |
+---------------+
| ACTIVE |
+---------------+
Via the error log you can also see it working:
[Note] feedback plugin: report to 'http://mariadb.org/feedback_plugin/post' was sent
[Note] feedback plugin: server replied 'ok'
Overall my current favorite enhancements are :
The basic install was this:
# Preconfiguration setup
shell> groupadd mariadb
shell> useradd -r -g mariadb mariadb
# Beginning of source-build specific instructions
shell> tar zxvf MariaDB-VERSION.tar.gz
shell> cd MariaDB-VERSION
shell> cmake .
shell> make
shell> make install DESTDIR="/usr/local/mariadb-10.0.2-tmp"
# End of source-build specific instructions
Build files have been written to: /usr/local/src/MySQL/MariaDB/10.0.2/mariadb-10.0.2
I do not like the results
-- Installing: /usr/local/mariadb-10.0.2-tmp/usr/local/mysql/
If DESTDIR is should install into that location not start with user under that location. This is a MySQL original issue as it does this with all versions of MySQL.
# Fix the odd/bug setup
shell> cd /usr/local/mariadb-10.0.2-tmp
shell> mv usr/local/mysql/ ../mariadb-10.0.2 ;
shell> cd ../; # rm -Rf mariadb-10.0.2-tmp
# Postinstallation setup
shell> cd /usr/local/mariadb-10.0.2
shell> chown -R mariadb .
shell> chgrp -R mariadb .
# Next command is optional
shell> cp support-files/my-small.cnf /etc/mariadb-10.0.2.cnf
shell> vi /etc/mariadb-10.0.2.cnf
port = 3310
socket = /tmp/mariadb-10.0.2.sock
shell> scripts/mysql_install_db --defaults-file=/etc/mariadb-10.0.2.cnf --basedir=/usr/local/mariadb-10.0.2 --skip-name-resolve --datadir=/var/lib/mariadb-10.0.2 --user=mariadb
shell> chown -R mariadb /var/lib/mariadb-10.0.2/*
shell> # bin/mysqld_safe --defaults-file=/etc/mariadb-10.0.2.cnf --user=mariadb --datadir=/var/lib/mariadb-10.0.2/ --port=3310 &
shell> # ./bin/mysql --port=3310 --socket=/tmp/mariadb-10.0.2.sock
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 10.0.2-MariaDB Source distribution
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