2014-05-15 14:26 GMT+02:00 Antonio Fernández Pérez
antoniofernan...@fabergroup.es:
Hi,
I have in my server database some tables that are too much big and produce
some slow query, even with correct indexes created.
For my application, it's necessary to have all the data because we
2014-05-19 11:49 GMT+02:00 Johan De Meersman vegiv...@tuxera.be:
- Original Message -
From: Manuel Arostegui man...@tuenti.com
Subject: Re: Big innodb tables, how can I work with them?
noSQL/table sharding/partitioning/archiving.
I keep wondering how people believe that NoSQL
2014-05-05 4:17 GMT+02:00 EdwardKing zhan...@neusoft.com:
I use mysql to create a database and grant rights to a user
hadooptest,then I use hadooptest to login mysql and use the database,but it
failed. Why raise error after I grant rights? How to solve it? Thanks.
My operation is follows:
2014-05-05 10:00 GMT+02:00 Reindl Harald h.rei...@thelounge.net:
Am 05.05.2014 08:34, schrieb Manuel Arostegui:
% doesn't match localhost so if you don't specify it you will be
attempting to connect via Unix Socket.
If you don't want to specify -hlocalhost all the time, just do the grant
2014-05-05 10:57 GMT+02:00 Reindl Harald h.rei...@thelounge.net:
Am 05.05.2014 10:19, schrieb Manuel Arostegui:
2014-05-05 10:00 GMT+02:00 Reindl Harald h.rei...@thelounge.netmailto:
h.rei...@thelounge.net:
Am 05.05.2014 08:34, schrieb Manuel Arostegui:
% doesn't match
2014-04-17 11:11 GMT+02:00 Ajay Garg ajaygargn...@gmail.com:
On Thu, Apr 17, 2014 at 2:28 PM, Reindl Harald h.rei...@thelounge.net
wrote:
Am 17.04.2014 10:55, schrieb Ajay Garg:
I do understand the meaning of Unix sync function.
So, you mean to say that flushing and syncing are
2014-04-15 8:52 GMT+02:00 reena.kam...@jktech.com:
Hi,
I need to do data masking to sensitive data exists in mysql db. is there
any data masking tool available for mysql with linux platform.
if yes... please provide the links.
else... please suggest other alternatives for this requirement.
2014-04-15 12:05 GMT+02:00 Radoulov, Dimitre cichomit...@gmail.com:
Hi Reindl,
On 15/04/2014 11:32, Reindl Harald wrote:
Am 15.04.2014 11:22, schrieb Radoulov, Dimitre:
we're going to patch our MySQL servers. Most of them are RHEL/OEL 5.x
and are going to be upgraded to 5.x+n (for
2014-03-21 18:42 GMT+01:00 David Lerer dle...@univision.net:
Frequently, we import a production dump that contains only 1 or 2
databases into one of our QA instances that contains many more databases.
(i.e. database being a schema or a catalogue).
At the beginning of the import script, we
2014-02-12 12:32 GMT+01:00 Lukas Lehner webleh...@gmail.com:
Hi Antonio
all tables use InnoDB. The size is 27 GB (not yet in prod). I guess in prod
it will be fast 80GB.
Depending on how your application is going to use MySQL resources you will
need to tweak some things (and not only
2014/1/17 Richard Reina gatorre...@gmail.com
I have 3 relay MySQL database servers on my small office LAN backing up a
master and 3 more machines backing up each relay (1 each). They are all
replicating all databases and all tables. The master although running fine
is almost eight years old.
2014/1/7 h...@tbbs.net
2014/01/06 17:07 +0100, Reindl Harald
what about look in the servers logfiles
most likely max_allowed_packet laughable low
Is this then, too, likly when the server and the client are the same
machine?
I left this out, that it only then happens when the client has
2013/11/21 Reindl Harald h.rei...@thelounge.net
Am 21.11.2013 13:51, schrieb Paul Halliday:
Had a system crash this morning and I can't seem to get mysql back up
and running. This is the error:
InnoDB: Progress in percent: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23 24
2013/9/17 Wayne Leutwyler wleut...@columbus.rr.com
Hello List,
I have a customer who is wanting to use the Archive Engine. I have no
experience with this engine, other than what I am been reading. Why would I
want to use Archive over InnoDB. They are only going to be placing audit
2013/8/14 Andy Wallace awall...@ihouseweb.com
Hey all -
We have been focusing on performance in our systems a lot lately, and have
made some pretty
good progress. Upgrading the mySQL engine from 5.1 to 5.5 was eye-opening.
But there are still issues, and one in particular is vexing. It
2013/7/30 Rick James rja...@yahoo-inc.com
Elevator... If the RAID _controller_ does the Elevator stuff, any OS
optimizations are wasted.
And there have been benchmarks backing that up. (Sorry, don't have any
links handy.)
RAID 5/10 ... The testing I have done shows very little
2013/7/23 Rick James rja...@yahoo-inc.com
Did you change innodb_log_file_size?
innodb_log_file_size error always appears in the logs...he only posted a
few lines of his log...but I guess (or I want to believe) he's gone through
the whole log before starting the thread :-)
Manuel
Hello,
Do you have trim enabled? Maybe those stalls could happen when the
disks are getting trimmed.
Just a random thought.
Manuel
2013/6/28, nixofortune nixofort...@gmail.com:
Hi guys,
Did you have any experience running MyLSQ or in my case MariaDB 5.5.31
on FreeBSD on top of zfs?
We are
2013/6/20 Peter one2001...@yahoo.com
Hello,
I copied innodb database (ib_logfile0 ib_logfile1 ibdata1 and the whole
database directory) from one crashed machine to another.
I find that I cannot start database to get the database data any more.
How did you copy the database?
Manuel
2013/6/20 Peter one2001...@yahoo.com
2013/6/20 Peter one2001...@yahoo.com
Hello,
I copied innodb database (ib_logfile0 ib_logfile1 ibdata1 and the whole
database directory) from one crashed machine to another.
I find that I cannot start database to get the database data any more.
How
2013/6/12 walter harms wha...@bfs.de
Hi list,
i am trying to understand the incredible use of filepointers in our mysql
server (5.1.53).
under normal condition the server reports 10k-15k open files pointer.
I run a 'flush tables' every 2h to avoid problems, the number of
users/connections
2013/6/6 Mike Franon kongfra...@gmail.com
I am running mysql 5.0 for now, and I have a script that I wrote at 12 am,
that stops mysql server, unmounts the disk that has mysql, and takes a
different snapshot from amazon as the new disk.
Long story short, 50% of the time the command
2013/6/6 Reindl Harald h.rei...@thelounge.net
Am 06.06.2013 15:39, schrieb Manuel Arostegui:
Once that problem has been found...you can use either /etc/init.d/mysql
stop or mysqladmin. Both should work in the same way
You should never use kill
and why? what do you think does any stop
2013/5/22 Tim Callaghan tmcallag...@gmail.com
Rafal,
I don't believe TRIM is supported for XFS.
I tried this two weeks ago and worked pretty well:
http://xfs.org/index.php/FITRIM/discard
Manuel.
2013/5/22 Rafał Radecki radecki.ra...@gmail.com
Hi All.
I use mysql/perconna/maria on my production CentOS 6 Linux servers. I
currently try to choose the default filesystem for partitions with mysql
data. Some time ago (previous dba) reiserfs was the choice but now it is
not in the kernel
2013/4/30 Richard Reina gatorre...@gmail.com
I have a few slaves set up on my local network that get updates from
my main mysql database master. I was hoping to turn one into a master
while keeping it a slave so that I can set up a chain. Does anyone
know where I can find a how to or other
2013/4/4 Richard Reina gatorre...@gmail.com
I am looking to spec out hardware for a new database server. I figured
a good starting point would be to find out how much usage my current
server is getting. It just a local machine that runs mysql and is
queried by a few users here in the office.
2013/4/4 h...@tbbs.net
2013/04/04 22:40 +0200, Manuel Arostegui
You can start with show innodb status;
It is now
show engine innodb status
Yep, sorry, not used to it just yet :-)
--
Manuel Aróstegui
Systems Team
tuenti.com
2013/3/31 Norah Jones nh.jone...@gmail.com
Hi,
To source sqldump i can use the source command, but if I need to do the
same stuff using command line without going to the sqlpromt, can I achieve
that.
Hello,
You mean cat sqldump.sql | mysql -uwhatever -pwhatever whatever_database ?
Hello Antonio,
As Reindl said, it is recommended but it shouldnt be done just
everyday if your tables are quite big and you use query cache.
If you do have lot of writes and deletes (depending on what you
consider a lot), your table will indeed have lot of 'blank rows' which
eat disk space.
2013/3/24 Reindl Harald h.rei...@thelounge.net
Am 24.03.2013 05:20, schrieb spameden:
2013/3/19 Rick James rja...@yahoo-inc.com:
you never have hosted a large site
Check my email address before saying that.
:D
as said, big company does not have only geniusses
20 may be low, but
2013/3/21 Miguel González Castaños miguel_3_gonza...@yahoo.es
Dear all,
I have a pretty simple setup. A LAMP server in production and a
failover LAMP server in case the main server is down.
I have been searching around to find out a clear answer of how to
proceed when you need to
2013/3/21 Miguel Gonzalez miguel_3_gonza...@yahoo.es
Can you elaborate about this? I thought that once you fixed the issues in
the master server you needed to set it as slave of the new promoted master
server, and do the other way round.
That's why you might want to have master-master
2013/3/16 Kevin Peterson qh.res...@gmail.com
I am using PHP along with mysql. Mysql default configuration allows to
have 100 simultaneous connection which I want to chane to 200. Please help.
If you're reaching too many connections quite often, this change can imply
memory problems in your
2013/3/11 Rafał Radecki radecki.ra...@gmail.com
Hi All.
I use:
cat /etc/redhat-release
CentOS release 6.3 (Final)
uname -a
Linux prod1.local 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09
UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
on db host:
rpm -qa | grep mmm
2013/2/15 Reindl Harald h.rei...@thelounge.net
our database is 400 GB, mysqldump is 600MB was not a typo and you
honestly believed that you can import this dump to somewhat?
WTF - as admin you should be able to see if the things in front
of you are theoretically possible before your start
2013/2/14 Robert Citek robert.ci...@gmail.com
According to the client, nothing is writing to the slave and
everything is being logged at the master. I have not had the
opportunity to independently verified any of this, yet. I do know
that the slave is not in read-only mode, but rather we
2013/2/14 Mike Franon kongfra...@gmail.com
Great thanks for the info, I guess the best way to do this is take a
spare server, set it up with our standard setup, and then start the
upgrade as you said 5.0 - 5.1 - 5.5, test and then upgrade to 5.6
and test.
Do not forget to leave that spare
2013/2/13 Robert Citek robert.ci...@gmail.com
On Wed, Feb 13, 2013 at 8:59 AM, Robert Citek robert.ci...@gmail.com
wrote:
Any other possibilities? Do other scenarios become likely if there
are two or more tables?
Of those, which are the most likely?
[from off-list responder]:
Other
2013/2/3 Larry Martell larry.mart...@gmail.com
We also ended up dropping the database and restoring from dumps.
However all recent dumps ended up having a similar corruption and we
were still getting the same errors. We had to go back to an October
dump before it would come up cleanly. And
2013/1/28 walter harms wha...@bfs.de
hi list,
i am using mysql 5.1.53.
after a crash i have the follwing error in my log:
130128 10:45:25 InnoDB: Error: page 61 log sequence number 0 2871649158
InnoDB: is in the future! Current system log sequence number 0 2494349480.
InnoDB: Your
disabling the transactions limit.
Manuel.
2012/12/7 Manuel Arostegui man...@tuenti.com
Hello all,
I am testing handlersockets performance in a 5.5.28-29.1-log (Percona)
server.
These are the enabled options:
loose_handlersocket_port = 9998
loose_handlersocket_port_wr =
Hello all,
I am testing handlersockets performance in a 5.5.28-29.1-log (Percona)
server.
These are the enabled options:
loose_handlersocket_port = 9998
loose_handlersocket_port_wr =
loose_handlersocket_threads = 48
loose_handlersocket_threads_wr = 1
innodb_spin_wait_delay=0
The machine
2012/11/30 Néstor rot...@gmail.com
I am trying to set up mysql replication on 2 systems but Once I get it
going, I get the following an error 1062,
skip
I have re-installed the database on the slave also to see if this fixes the
problem
but after a few minutes I get the same error. I
Hi Tom,
I am assuming nothing relevant shows up in dmesg, right?
I have experienced random crashes like that and most of them turned to
be HW issues - hard disk and memory banks related.
Is it a HW RAID? Have you tried looking at the controller logs? (Megacli).
And yes, corrupted tables would
2012/11/15 Lorenzo Milesi max...@ufficyo.com
Hi.
Is it possible to have a master/master replication between servers of
different versions?
Now I've two 5.0.51 syncing themselves. I'm installing a new server with
5.5.28 and I'd like if I can upgrade but still mantaining compatibility.
2012/11/12 Machiel Richards - Gmail machiel.richa...@gmail.com
Hi Guys
We need some assistance with a master slave setup we are
experiencing some issues with.
We have one master with 2 slaves replicating from it.
Both the slaves stopped working this morning in the
2012/11/12 Machiel Richards - Gmail machiel.richa...@gmail.com
Hi Manuel
Please take careful note of what I have stated in the original
mail.
1. the fact that the slaves say seconds behind master = 0 does
not neccesarily mean that repliication is working as I have found
2012/11/7 Ananda Kumar anan...@gmail.com
you can use checksum to make sure there are not corruption in the file
That would work for the file integrity itself not for the data integrity
_in_ the file.
As Claudio suggested, probably going thru the whole recovery process from
time to time is
Hello,
Just one more suggestion to do full backups in large databases:
- Dedicated slave (either physical machine, a disk cabinet using iscsi
connections from a machine just with a bunch of RAM etc)
- Get the slave delayed a certain time (ie: 1 hour, 2 hours...depends on
your workload) using
2012/10/25 Sabika M sabika.makhd...@gmail.com
I have replication setup in the following way:
A - B -C
I am making updates to server A. I want to stop all my updates and point
them to server C. After I start writing to server C, can I use the change
master statement to make the C the master
2012/10/10 Aastha aast...@gmail.com
Hi,
Are there any open source MYSQL rela time monitoring tools available in the
market.
Aastha
Hello Aastha,
You should try to be more specific when asking for stuff.
What do you want to monitor? reads/writes? QPS? threads? etc
Thanks
Manuel.
2012/10/10 Aastha aast...@gmail.com
it should do the following:
1. give the status of the health of the nodes -Primary concern
What do you mean with health of the nodes? mysqld running? master-slaves
up and sync'ed? replication not broken? you using NDB?. Still a very vague
explanation.
2012/10/4 Andrew Miklas and...@pagerduty.com
Hi guys,
I recently had a data corruption issue with InnoDB. MySQL was shut down
improperly (power failure), and when the system came back up, MySQL refused
to start. On inspection of the logs (see below), it looks like the
tablespace became
2012/9/19 Mark Haney ma...@abemblem.com
I hope this doesn't end in some kind of flame war. I'm looking to
optimize my tables (and performance in general) of the DB my web app is
using. I'm tweaking things a little at a time, but I'm curious as to what
the rest of the MySQL list thinks about
2012/9/10 Machiel Richards - Gmail machiel.richa...@gmail.com
Hi,
permissions are confirmed as being correct. Other applications and
users are currently writing files to this directory yes.
Have you tried su - mysql and touch /tmp/test? (if your mysql user has
shell...)
Good luck!
2012/9/5 Adarsh Sharma eddy.ada...@gmail.com
Actually that query is not my concern :
i have a query that is taking so much time :
Slow Log Output :
# Overall: 195 total, 16 unique, 0.00 QPS, 0.31x concurrency _
# Time range: 2012-09-01 14:30:01 to 2012-09-04 14:13:46
#
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