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[Maria-discuss] Help with history tables
by Roberto Spadim 22 May '14

22 May '14

Hi guys I have an doubt about design I have a history table: CREATE TABLE HISTORY( CHANNEL INT NOT NUL DEFAULT 0, HISTORY_DATE DECIMAL(22,6) NOT NULL DEFAULT '0' COMMENT 'UNIX TIME', VALUE DECIMAL (22,6) NOT NULL DEFAULT 0, PRIMARY KEY (CHANNEL,HISTORY_DATE) ) my question is... i need a history of only 50000 rows for each channel what's the best method to allow a good history without many deletes, analyse tables, and others stuffs to allow a good table/disk usage? i was considering a counter, for example, after 1000 inserts, run a SELECT COUNT(*) FROM HISTORY WHERE CHANNEL={channel_id} get this number of rows, if it's > 50000 run: DELETE FROM HISTORY WHERE CHANNEL={channel_id} ORDER BY HISTORY_DATE ASC LIMIT (number_of_rows - 50000) any other idea? maybe a 'batch' operation? i was think about something like (don't work, just a idea) DELETE FROM HISTORY WHERE CHANNEL IN (channel numbers) AND xxxxx? LIMIT 50000 GROUP BY CHANNEL i don't know anything to group by channel id and delete rows using only one sql command , any idea? thanks guys! -- Roberto Spadim SPAEmpresarial Eng. Automação e Controle

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[Maria-discuss] Ubuntu 14.04 + MariaDB engines
by Colin Charles 16 May '14

16 May '14

Hi gerry, You asked why TokuDB and SphinxSE isn't in stock MariaDB that you get from Ubuntu 14.04, and I shall attempt to answer that for you (Ubuntu packages are inherited from upstream Debian fwiw) From /etc/lsb-release: DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS" select version() gives: 5.5.37-MariaDB-0ubuntu0.14.04.1 When I do show engines; I see Sphinx: | SPHINX | YES | Sphinx storage engine | NO | NO | NO | You can verify it exists in /usr/lib/mysql/plugin. By default, there are 11 "engines" listed If you follow https://mariadb.com/kb/en/how-to-enable-tokudb-in-mariadb/ you may be disappointed not to see TokuDB (since it appeared in 5.5.33 - simple answer is that its disabled, just like oqgraph See commit: http://anonscm.debian.org/gitweb/?p=pkg-mysql/mariadb-5.5.git;a=commit;h=68… You can however continue to get TokuDB from our mariadb repositories, using the repository config tool HTH cheers, -colin -- Colin Charles, Chief Evangelist, SkySQL - The MariaDB Company blog: http://bytebot.net/blog/| t: +6-012-204-3201 | Skype: colincharles

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[Maria-discuss] SELinux policy for MariaDB/Galera?
by Franz Schwartau 14 May '14

14 May '14

Hi! I'm looking for a SELinux policy for MariaDB/Galera. I'd like to use MariaDB/Galera with enforcing targeted SELinux. I googled a lot. No real solution showed up. The most helpful page was https://groups.google.com/forum/#!topic/percona-discussion/beyXK3U0ySo/disc… which solves part of the problem. Currently I try to allow SST via rsync. /usr/bin/wsrep_sst_rsync executes ps and netstat producing a lot of AVC denials, e. g. ---- time->Wed May 14 10:30:23 2014 type=SYSCALL msg=audit(1400056223.334:70): arch=c000003e syscall=4 success=yes exit=0 a0=17081b0 a1=7f9811231ca0 a2=7f9811231ca0 a3=17081b6 items=0 ppid=1678 pid=1704 auid=4294967295 uid=497 gid=498 euid=497 suid=497 fsuid=497 egid=498 sgid=498 fsgid=498 tty=(none) ses =4294967295 comm="ps" exe="/bin/ps" subj=system_u:system_r:mysqld_t:s0 key=(null) type=AVC msg=audit(1400056223.334:70): avc: denied { getattr } for pid=1704 comm="ps" path="/proc/844" dev=proc ino=10578 scontext=system_u:system_r:mysqld_t:s0 tcontext=system_u:system_r:initrc_t:s0 tclass=dir ---- time->Wed May 14 10:30:23 2014 type=SYSCALL msg=audit(1400056223.337:75): arch=c000003e syscall=2 success=yes exit=12 a0=7f9811231840 a1=0 a2=0 a3=0 items=0 ppid=1678 pid=1704 auid=4294967295 uid=497 gid=498 euid=497 suid=497 fsuid=497 egid=498 sgid=498 fsgid=498 tty=(none) ses=4294967295 comm="ps" exe="/bin/ps" subj=system_u:system_r:mysqld_t:s0 key=(null) type=AVC msg=audit(1400056223.337:75): avc: denied { open } for pid=1704 comm="ps" name="stat" dev=proc ino=12305 scontext=system_u:system_r:mysqld_t:s0 tcontext=system_u:system_r:restorecond_t:s0 tclass=file type=AVC msg=audit(1400056223.337:75): avc: denied { read } for pid=1704 comm="ps" name="stat" dev=proc ino=12305 scontext=system_u:system_r:mysqld_t:s0 tcontext=system_u:system_r:restorecond_t:s0 tclass=file type=AVC msg=audit(1400056223.337:75): avc: denied { search } for pid=1704 comm="ps" name="1230" dev=proc ino=12150 scontext=system_u:system_r:mysqld_t:s0 tcontext=system_u:system_r:restorecond_t:s0 tclass=dir audit2allow doesn't help in this case. The target domain isn't "fixed". It depends on the processes running. "netstat -lnpt" executed by /usr/bin/wsrep_sst_rsync has the problem. How could I write a SELinux policy to allow access for ps and netstat? Is there an "official" policy? Even RHEL 7 hasn't support for Galera (but improves the mysql policy for MariaDB a bit). Best regards Franz

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[Maria-discuss] MariaDB Galera Cluster version 10.0 incompatible with the version 5.5
by Eric Kom 13 May '14

13 May '14

Hi All, I'm new in the clustering, after installed 4 nodes with 3 having version 10.0 and another with version 5.5, this last did not want to join the cluster until I upgrade it to version 10.0. My question is, they is an incompatibility between the two versions? Thanks

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[Maria-discuss] libaio dependency?
by Benjamin Jaton 12 May '14

12 May '14

Hi, I downloaded this archive: mariadb-10.0.10-linux-x86_64.tar.gz I use the simple my.conf from the documentation but all the commands fail, saying that they need libaio. *$ ./scripts/mysql_install_db --defaults-file=./my.conf Installing MariaDB/MySQL system tables in '(...)/var' ..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directoryInstallation of system tables failed! Examine the logs in (...)/var for more information.* I think this used to be a bug in 5.5.23 ( https://mariadb.atlassian.net/browse/MDEV-302 ), can it be in 10.0.10 as well? Thanks, Ben

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[Maria-discuss] MariaDB 10.0.11 now available
by Daniel Bartholomew 12 May '14

12 May '14

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.0.11 This is a Stable (GA) release. See the Release Notes and Changelog for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 10.0.11 - Release Notes: https://mariadb.com/kb/en/mariadb-10011-release-notes - Changelog: https://mariadb.com/kb/en/mariadb-10011-changelog - Downloads: https://downloads.mariadb.org/mariadb/10.0.11 About MariaDB 10.0: - https://mariadb.com/kb/en/what-is-mariadb-100/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ - - MariaDB Webinars - - - - - - - - - - - - - - - - - - - - - - - - - SkySQL has held several MariaDB-focused Webinars recently which are available on an on-demand basis at: - http://www.skysql.com/why-skysql/webinars/ They are also planning several more MariaDB-focused webinars that will be held over the comming months. Details available at the above link. - - MariaDB Books - - - - - - - - - - - - - - - - - - - - - - - - - - The recently published MariaDB Cookbook contains nearly 100 recipes covering a variety of features in MariaDB 10.0. - http://www.packtpub.com/exclusive-and-unique-features-of-mariadb/book Another book, Getting Started with MariaDB is a how-to guide for beginners to help them get up to speed quickly with MariaDB. No prior database experience required. - http://www.packtpub.com/getting-started-with-mariadb/book - - User Feedback plugin - - - - - - - - - - - - - - - - - - - - - - - MariaDB includes a User Feedback plugin. This plugin is disabled by default. If enabled, it submits basic, completely anonymous MariaDB usage information. This information is used by the developers to track trends in MariaDB usage to better guide development efforts. If you would like to help make MariaDB better, please add "feedback=ON" to your my.cnf or my.ini file! See http://mariadb.com/kb/en/user-feedback-plugin for more information. - - Quality - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The project always strives for quality, but in reality, nothing is perfect. Please take time to report any issues you encounter at: - http://mariadb.org/jira - - Support MariaDB - - - - - - - - - - - - - - - - - - - - - - - - - - If you would like to contribute to the MariaDB Foundation, please see the "contributing" and "donations" pages. We also have merchandise available in a cafepress store. All proceeds go to support the MariaDB Foundation. - https://mariadb.com/kb/en/contributing - https://mariadb.org/en/donate/ - http://www.cafepress.com/mariadb We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledge Base - http://mariadb.com/kb

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[Maria-discuss] MariaDB 10.0.10 - InnoDB confusion?
by Charles Cazabon 08 May '14

08 May '14

Greetings, I'm not sure if I'm doing something particularly stupid, but I'm having difficulty using InnoDB (the XtraDB version) with MariaDB v.10.0.10. The engine shows as disabled in my configuration for reasons I'm unclear on. I'm using a mirror of the apt repository (from http://mariadb.org/mariadb/repositories/) on Ubuntu 14.04 server, running on x86_64. The currently installed version is 10.0.10+maria-1~trusty . My configuration includes changing the default table type: # defaults to innodb default_storage_engine = aria That works as expected. However, when I create a table specifying `ENGINE=InnoDB`, the table is actually created as an Aria table, and a warning is logged: > show warnings; +---------+------+---------------------------------+ | Level | Code | Message | +---------+------+---------------------------------+ | Warning | 1286 | Unknown storage engine 'InnoDB' | +---------+------+---------------------------------+ Sure enough, the InnoDB engine shows as not supported: > show engines; [...] | InnoDB | NO | Percona-XtraDB, Supports transactions.... | I haven't done anything specifically to disable XtraDB/InnoDB support. Looking through the documentation, knowledge basse, and mailing list archives hasn't turned up anything related. The only thing I found was this, in the documentation for the ignore_builtin_innodb variable: ignore_builtin_innodb Description: In older versions of MariaDB, setting this to 1 resulted in the built in InnoDB storage engine to be ignored. In MariaDB 5.5, InnoDB is the default and is always present, so this variable is ignored and setting it results in a warning. In MariaDB 10.0.x, this variable currently needs to be set. I'm not sure exactly what it means by saying it "needs to be set" with this version of MariaDB (doc bug?). If I add `ignore_builtin_innodb = 1` to my configuration, then the server refuses to start, complaining about unrecognized configuration options in the config, basically anything to do with innodb (innodb_file_per_table, innodb_checksum_algorithm, etc). Am I missing something? Is there a way to use Aria as the default table type while still allowing the use of XtraDB-provided InnoDB tables as well? Any assistance appreciated. Thanks, Charles -- ------------------------------------------------------------------ Charles Cazabon <charlesc-web-register-launchpad.net(a)pyropus.ca> Software, consulting, and services available at http://pyropus.ca/ ------------------------------------------------------------------

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[Maria-discuss] New Question: Order of releases
by AskMonty KB 08 May '14

08 May '14

Hello, A new question has been asked in "Release Notes - MariaDB Audit Plugin" by dveeden: -------------------------------- The releases seems to be ordered by the excerpt. Because of this text based order the latest release is below the older releases. How can we force ordering on the real date or version number? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/order-of-releases/

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[Maria-discuss] New Question: Unable to install TokuDB storage engine using YUM in Fedora 20 64bit? I am running MariaDB 10.0 version and Fedora 20 64bit.
by AskMonty KB 07 May '14

07 May '14

Hello, A new question has been asked in "MariaDB community" by cyberdomecyberdome: -------------------------------- I am trying to install TokuDB engine in my Fedora 64bit MariaDB 10.0 server. When I run the command " yum install MariaDB-tokudb-engine " it gives me error no package found. Have they not added tokuDB in the repository? any help is appreciated. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/unable-to-install-tokudb-storage-engine-using-yum-…

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[Maria-discuss] New Question: I want to help MariaDB community and execute Test Cases and provide results how can I do that?
by AskMonty KB 07 May '14

07 May '14

Hello, A new question has been asked in "MariaDB community" by cyberdomecyberdome: -------------------------------- I am a QA Analyst and I love open source. I want to gain access to MariaDB community and read the TEST PLAN and execute test cases? Where can I get this information and post my results. Are they using QTP or Quality Center or JIRA? where can I start? any help is greatly appreciated. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/i-want-to-help-mariadb-community-and-execute-test-…

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