lift off Daemon Information schema Full Text SE Storage Whats up next? MySQL Plugins

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1 MySQL Plugins Erkan Yanar Blog: linsenraum.de/erkules Xing: Yanar 24. März 2011

2 Was will der Vortag

3 Ein Plug-in (häufig auch Plugin; von engl. to plug in, einstöpseln, anschließen, deutsch etwa Erweiterungsmodul ) ist ein Computerprogramm, das in ein anderes Softwareprodukt eingeklinkt wird und damit dessen Funktionalität erweitert. Zitat: Wikipedia

4 Break it

5 Break it Plugins können zur Laufzeit geladen werden Kein Neukompelieren Kein Neustart

6 mysql> INSTALL PLUGIN pluginname SONAME plug.so mysql> UNINSTALL PLUGIN pluginname mysql> SHOW PLUGINS mysql> SHOW VARIABLES LIKE plugin dir - -disable-plugin-plugin name - -plugin-plugin name=off - -plugin-load

7 lift off Daemon Information schema PluginTypen PluginTypen (MySQL 5.5/Maria 5.2) Daemon Information Schema Full Text Parser StorageEngine Authentication Replication Audit Services Full Text SE Storage Whats up next?

8 Quelle: Plugin mysql declare plugin Makro Plugintyp

9 mysql_declare_plugin(semi_sync_slave) { MYSQL_REPLICATION_PLUGIN, /* PluginTyp plugin.h */ &semi_sync_slave_plugin, /* Info */ "rpl_semi_sync_slave", /* Pluginname */ "He Zhenxing", /* autor */ "Semi-synchronous replication slave", /* description */ PLUGIN_LICENSE_GPL, /* Licenz */ semi_sync_slave_plugin_init, /* Plugin Init */ semi_sync_slave_plugin_deinit, /* Plugin Deinit */ 0x0100 /* Version (1.0) */, semi_sync_slave_status_vars, /* status variables */ semi_sync_slave_system_ vars, /* system variables */ NULL /* config options aka END */ } mysql_declare_plugin_end;

10 Daemon MYSQL DAEMON PLUGIN Status Variables Global Variables

11 BeispieleAußerhalb von Oracle HandlerSocket Yoshinori Matsunobu

12 Information schema MYSQL INFORMATION SCHEMA PLUGIN INFORMATION SCHEMA gibt Zugriff auf Datenbank-Metadaten Auch als Data Dictionary oder Systemkatalog bekannt. daemon + Tabellen im I S (read only)

13 Beispiele sigar vmstat StorageEngines QueryCache

14 Fulltext: MYSQL FTPARSER PLUGIN Hooks DML und MATCH().. AGAINST Text tokenizen Index erstellen mysql parse() mysql add word() HA CAN FULLTEXT CREATE TABLE ta (a text,fulltext(a) WITH PARSER plugin); SELECT...MATCH (a) AGAINST(...);

15 Storage Engines sql/handler.h Daten Indizes Binlog FULLTEXT partition usw.

16 StorageEngines

17 CREATE TABLE name (... ) ENGINE=engine; ALTER TABLE name ENGINE=engine;

18 MYSQL STORAGE ENGINE PLUGIN HA CAN FULLTEXT HA CAN GEOMETRI HA CAN SQL HANDLER HA BINLOG ROW CAPABLE HA CAN INSERT DELAYED HA NO TRANSACTIONS methods create() open() write row() index read() table flags() commit() show status() savepoint rollback()

19 Auszug der Standard-Engines BuiltInStorageEngines MyISAM Bis 5.1 Default Geringer Footprint FULLTEXT TableLocking Kein lockfreies Backup Lesestark Seit 5.5. Default RI MVCC ACID Transaktionen lockfreies Backup Clustered Index

20 lift off Daemon Information schema Auszug der Standard-Engines ARCHIVE revisionssichere Archivierung INSERT/SELECT Platzsparend Schnell CSV Daten Officekompatibel speichern Auf ODBC verzichten :-) keine Indizes Full Text SE Storage Whats up next?

21 Auszug der Standard-Engines MERGE Wrapper für MyISAM Vereinigung von Tabellen keine Tabelle nur eine beschreibbar CREATE TABLE... ENGINE=MERGE UNION=(... ) INSERT METHOD=LAST MEMORY Speicher kein TEXT/BLOB feste Zeilenlänge

22 Auszug der Standard-Engines NDB-Cluster Shared Nothing HA Hoher Durchsatz Skaliert Schreibstark Synchrone Replikation ALTER TABLE table ENGINE=NDB;

23 Freie Engines ausserhalb von Oracle - General Purpose Engine Freie StorageEngines ausserhalb von Oracle

24 Freie Engines ausserhalb von Oracle - General Purpose Engine Aria 1.5 ISAM MyISAM Maria crashsafe MVCC,ACID FULLTEXT Transaktionen (ab 2.0) Row Locking (ab 2.0) XTRADB Fork vom InnoDB-Plugin (Oracle) percona.com schnelles recovery etc.

25 Freie Engines ausserhalb von Oracle - General Purpose Engine PBXT Paul McCullagh Write Once/Sweeper Kein R-Cache Polution RI ACID logbased MVCC Row Level Locking Kein Undo Kein Update

26 Freie Engines ausserhalb von Oracle - Special Purpose Engine Q4M Oku Kazuho Q4M - Die Message Queue Engine Queue 4 MySQL RabbitMQ? Messages mit SQL verwalten asynchron log based fileformat forward priorität Howto im Blog

27 Freie Engines ausserhalb von Oracle - Special Purpose Engine OQGraph Antony Curtis and Arjen Lentz Graphentheorie neo4j? noch memory only Howto im Blog Netzwerk Abhängigkeiten NestedSets byebye

28 Freie Engines ausserhalb von Oracle - Meta Engine FEDERATEDX Patrick Galbraith Zugriff auf Tabellen via Netzwerk Verbindungsdaten im CONNECTION CREATE TABLE name (... ) ENGINE=FEDERATED CONNECTION= mysql://user:pass@host/db/table ;

29 Freie Engines ausserhalb von Oracle - Meta Engine Spider Kentoku Shiba Spider Partitionierung übers Netz Federated + XA wow i.e. joins auf shards part,sub + part,sub CREATE TABLE spidi (.. ) ENGINE=SPIDER Connection table spidi, user i, password p PARTITION BY RANGE (col)( partition p1... comment host ip, port 3306

30 Freie Engines ausserhalb von Oracle - Not catagorized Sphinx SPHINX Full-text Indiziert Gewichte Attribute Cluster SPHINXSE CREATE TABLE table (... ) ENGINE=SPHINX CONNECTION= sphinx://localhost/indexname

31 auth-plugin MYSQL AUTHENTICATION PLUGIN Authentifizierung only proxy user

32 INSTALL PLUGIN socket_peercred SONAME auth_socket.so ; CREATE USER erkan IDENTIFIED VIA socket_peercred; select user,host,password,plugin from mysql.user where user= erkan ; user host password plugin erkan % socket_peercred

33 mysql_declare_plugin(socket_auth) { MYSQL_AUTHENTICATION_PLUGIN, &socket_auth_handler, "socket_peercred", "Sergei Golubchik", "Unix Socket based authentication", PLUGIN_LICENSE_GPL, NULL, NULL, 0x0100, NULL, NULL, NULL } static struct st_mysql_auth socket_auth_handler= { MYSQL_AUTHENTICATION_INTERFACE_VERSION, 0, /* client plugin */ socket_auth /* function */ };

34 Replication-plugin MYSQL REPLICATION PLUGIN INSTALL PLUGIN rpl semi sync master SONAME semisync master.so ; SET rpl semi sync master enabled=1;

35 audit-plugin MYSQL AUDIT PLUGIN GeneralLogHook ErrorLogHook ResultSetHook SQLStat

36 Server Services sql/sql plugin services.h Zugriff auf Serverfunktionen my malloc my sync thd alloc

37 Es wurden ignoriert: Tokutek ScaleDB AWSS3 infobright/infinidb IBMDB2I VP drizzle MariaDB-CREATE-Extensions

38 MySQL 5.1 Plugin Developement Andrew Hutchings, Sergei Golubchik Roland Bouman forge.mysql.com/.../fosdem 2009-Roland Bouman-MySQL Plugins.pdf Sergei Golubchik Erkan Yanar authentication-framework-fur-mysql.html

39 lift off Daemon Information schema Full Text SE Storage Whats up next? Bildernachweis Chicago City View 2001.jpg Daemon Baphomet.PNG with Turky in Europe.jpg without text.svg

40 lift off Daemon Information schema Full Text SE Storage Whats up next? Bildernachweis box.jpg

41 Bildernachweis df ps Landschaften %5E H%C3%BCgellandschaften - Gebirgslandschaften %5E.jpg 3l-X4JQ1EX4/S6f4IHWlpdI/AAAAAAAAATk/ e4olasegoe/s1600- h/screen+shot at am.png

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