How To Automatically Check And Repair Mysql Databases And Tables
Jul 16, 2009I have cPanle shared account.
Is there a way to automatically check and repair mysql databases and tables, that can be scheduled as cron job?
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How To Check Which Mysql Databases Cause Server Load
Jul 30, 2007How can i check (using SSH) which databases/users cause server load to mysql ?
I've tried "mysqladmin proc stat" but it shows just the current. How can i get stats of the last 24 hours for example ?
I've also seen slow connections stats. What is the command to check more detailed report of the slow connections; which databases caused it etc', in the last 24 hours for example as well.
Fantastico Script Creating Databases But Not Tables
Oct 20, 2006when fantastico applications get installed, for some reason they are creating the database, but none of the tables are installed.
View 6 Replies View RelatedMySQL Doubt: More DB's & Less Tables || More Tables Less DB's
Nov 2, 2009im planning on designing a webservice, it will have a lot of data, spread in many tables.
The problem is that there will be tables created constantly (around 5 each day..)
All tables/data will be accessed equally, so I dont know how to set up the system, to create multiple databases, and balance the number of tables equally on each database, or create less databases and have a lot of tables on each one.
Which one has more efficiency?
Why MySQL Tables Crash
Jul 15, 2009This is something i was wondering about and never found any answers.
Based on your experience, what are the most common reasons mysql tables crash?
Optimize All Tables In A MySQL Database
Oct 29, 2008how exactly it helps?
mysqlcheck -o -u...
Like what it does to "optimize" them? Does it really help?
Convert All Mysql Tables To Utf8
Jul 8, 2008I have a vbulletin (3.7.2) board with many mods installed (nearly 70) without a problem.
However, upon installing one new mod I got a database error stating:
MySQL Error : Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '='
How do I change ALL tables in one shot (or sql query via phpmyadmin) from the two different collations to utf8?
Also, is utf8 suggested or better than latin1?
Are There Any Ways To Replicate Just A Few Tables On Mysql
Dec 21, 2007Is there no possible way I can slave just a few tables in mysql? instead of slaving the entire table on the main database server.
View 1 Replies View RelatedMysql Deleted Several Tables Under High Server Load
Apr 27, 2007we have mysql 5 setup and this morning at around 10:07 tables started disappearing as they were being accessed by different clients.
Databases that had 40 tables now had 30, etc. Only the tables that were attempted to be accessed were gone. This is the first time something like this has happened.
The following output was given:
This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help diagnose the
problem, but since we have already crashed, something is definitely wrong and this may fail.
key_buffer_size=8388600
read_buffer_size=131072
max_used_connections=208
max_connections=500
threads_connected=156
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 1096188 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
thd=0xaf82930
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
Cannot determine thread, fp=0xb143932c, backtrace may not be correct.
Stack range sanity check OK, backtrace follows:
0x816b1a0
0xaf1898
0x20
0x81ac49d
0x8182914
0x8189010
0x8189df1
0x818a738
0x818ae5c
0xaeb371
0x9c4ffe
New value of fp=(nil) failed sanity check, terminating stack trace!
Please read [url]and follow instructions on how to resolve the stack trace. Resolved
stack trace is much more helpful in diagnosing the problem, so please do
resolve it
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0xaf36620 = SELECT * FROM `sessions` WHERE `PHPSESSID` = '5e6775cd3c6f187d8c575127ba73be19'
thd->thread_id=113407
The manual page at [url]contains
information that should help you find out what is causing the crash.
mysqld: my_new.cc:51: int __cxa_pure_virtual(): Assertion `"Pure virtual method called." == "Aborted"' failed.
Number of processes running now: 0
070427 10:07:49 mysqld restarted
070427 10:07:50 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
070427 10:07:53 InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 227822203.
InnoDB: Doing recovery: scanned up to log sequence number 0 227822203
070427 10:07:53 InnoDB: Started; log sequence number 0 227822203
070427 10:07:54 [Note] /usr/sbin/mysqld: ready for connections.
How To Restore Mysql Databases From /var/lib/mysql/user_database/ Files Only
Feb 11, 2008I recently had a harddrive failure and luckliy I can still access certain directories on this failed drive. I can still access the /var/lib/mysql/ directory which holds all the users databases and have backed all these up separately using tar.
Now what I need to know is how do you restore these database files to another server? I tried simply untar'ing one of these to the new servers /var/lib/mysql/ direcotry and it stuffed Mysql up - it went offline. I had to get a cpanel tech to bring Mysql back online.
how can I get these database files to fully work on a new server?
Export All MySQL Databases
Sep 24, 2008I need to export all databases on my server to put it on my new server. Is there a quick and easy way to do that without doing the WHM transfer?
View 4 Replies View RelatedPath For MySQL Databases
Oct 25, 2009Just wanted to ask, which folder are the MySQL databases held in for Cpanel? Running CentOS 5 VPS.
View 7 Replies View RelatedVisualizing MySQL Databases
Dec 14, 2008I've recently been asked to do a lot of data extraction from a state that has about 20 databases, each with between 10 and 100 tables. I often find myself diagramming things out on paper to try to visualize how everything works together.
I wondered if there's a tool that would "draw" the tables, columns, and relationships? I hesitate to say this, but almost like how MS Access does it, but that runs on Linux and does MySQL. Is there such a thing? I know about phpMyAdmin and MySQL's Query Browser, but it's not what I'm looking for.
Is There A Way To Search Through MySQL Databases
Mar 9, 2007I am running a dedicated server with Debian, and I installed a community sofware that has a lot of mySQL entries, many of which need to be changed to fit my needs
However, it is very hard to know exactly where each value I need to change is stored. Is there a way to search all database tables for a specific value?
For example, one thing that is stored in the database is the site's title displayed in the browser's title bar. The sofware does not give me the option to change it, so I have to find where it is located in the database and change it myself, but it would be extremely time comsuming to check all tables one by one for any occurences of the current title.
Are My MySQL Databases Hosed
Sep 14, 2007My HD was failing. So ServerBeach quickly set me up with a fresh box with the dying drive installed as a secondary drive. (nice job guys)
I'm able to mount the secondary drive and browse/copy the files... but when I get to the most important files of all, the database binaries, my /var/lib dir looks like this:
Code:
[root@rosemary v2]# ls -l /mnt/dying/var/lib/
total 68
...
....
-rw-r--r-- 1 root root 2171 Sep 14 03:02 logrotate.status
drwxrwsr-x 6 root 41 4096 Oct 12 2005 mailman
drwxr-xr-x 2 root root 4096 Oct 12 2005 misc
?--------- ? ? ? ? ? mysql
drwxr-xr-x 4 root root 4096 Oct 12 2005 nfs
drwxr-xr-x 2 ntp ntp 4096 Sep 14 10:31 ntp
...
...
And if I try to cd into the dir, I get this:
Code:
[root@rosemary v2]# cd /mnt/dying/var/lib/mysql
-bash: cd: /mnt/dying/var/lib/mysql: Input/output error
I really *really* need this data!
Am I just totally S.O.L. ?
Backup MySQL Databases On PC
Jul 20, 2007I host with hostgator and I was wondering if there are any software programs or services, or even something in my cpanel that can automatically grab my MySQL databases and everything on my server and make a backup on my personal PC?
I know I can manually do this, but I would like something that automatically does it once a week or something to insure my clients data is always backed up.
Backup And Restore Mysql Databases
May 10, 2008I have a corrupted VPS, and have some mysql databases on it.
I want to backup databases and restore them on the new server.
Cpanel service is down on the vps and I cannot transfer accts.
Is it possible to do so ?
1- Zip or Tar the username folder in /home dir.
2- zip or tar the database name in /var/lib/mysql folder
Either by SSH or File manager trough HyperVM
Then transfer files some where safe...
When vps is rebuilt, restore the archives and databases to
the folders I have backed up before rebuilt.
There are also some accounts on a terminated vps that there is only an image of the vps available so, I only can tar files using a jailed shell account, move to the new vps and untar them.
how to do it and avoid database problems.
MySQL Backup Multiple Databases
Feb 8, 2008My site is databases driven and runs on around 15 mySQL databases. Im wanting to download a local copy of these databases daily, however, if i try and back them up via cPanel (on a WHM VPS) they give me blank files. Each databases is around 55mb and growing. I can back them up one by one via phpmyadmin, it just takes around 5 minutes per database. Meaning around 40 minutes per night..
Is there any solution for having a script downloading them automatically so i can download them via ftp? I've tried [url].htm but it gives me blank files.
Backup MySQL Databases By Cron
Apr 1, 2007how to backup MySQL databases by cron and have the backups sent to you by email, or have them uploaded by FTP. It is based on a script I found at another website though I can confirm it is fully working.
Change the commented variables in the following file and save it as backup.sh:
Code:
#!/bin/sh
# This script will backup one or more mySQL databases
# and then optionally email them and/or FTP them
# This script will create a different backup file for each database by day of the week
# i.e. 1-dbname1.sql.gz for database=dbname1 on Monday (day=1)
# This is a trick so that you never have more than 7 days worth of backups on your FTP server.
# as the weeks rotate, the files from the same day of the prev week are overwritten.
#/bin/sh /home/user/directory/scriptname.sh > /dev/null
############################################################
#===> site-specific variables - customize for your site
# List all of the MySQL databases that you want to backup in here,
# each seperated by a space
# If not run by root, only one db per script instance
databases="mydbname"
# Directory where you want the backup files to be placed
backupdir=/home/mydomain/backups
# MySQL dump command, use the full path name here
mysqldumpcmd=/usr/bin/mysqldump
# MySQL Username and password
userpassword=" --user=myuser --password=mypasswd"
# MySQL dump options
dumpoptions=" --quick --add-drop-table --add-locks --extended-insert --lock-tables"
# Unix Commands
gzip=/bin/gzip
uuencode=/usr/bin/uuencode
mail=/bin/mail
# Send Backup? Would you like the backup emailed to you?
# Set to "y" if you do
sendbackup="n"
subject="mySQL Backup"
mailto="me@mydomain.com"
#===> site-specific variables for FTP
ftpbackup="y"
ftpserver="myftpserver.com"
ftpuser="myftpuser"
ftppasswd="myftppasswd"
# If you are keeping the backups in a subdir to your FTP root
ftpdir="forums"
#===> END site-specific variables - customize for your site
############################################################
# Get the Day of the Week (0-6)
# This allows to save one backup for each day of the week
# Just alter the date command if you want to use a timestamp
DOW=`date +%w`
# Create our backup directory if not already there
mkdir -p ${backupdir}
if [ ! -d ${backupdir} ]
then
echo "Not a directory: ${backupdir}"
exit 1
fi
# Dump all of our databases
echo "Dumping MySQL Databases"
for database in $databases
do
$mysqldumpcmd $userpassword $dumpoptions $database > ${backupdir}/${DOW}-${database}.sql
done
# Compress all of our backup files
echo "Compressing Dump Files"
for database in $databases
do
rm -f ${backupdir}/${DOW}-${database}.sql.gz
$gzip ${backupdir}/${DOW}-${database}.sql
done
# Send the backups via email
if [ $sendbackup = "y" ]
then
for database in $databases
do
$uuencode ${backupdir}/${DOW}-${database}.sql.gz > ${backupdir}/${database}.sql.gz.uu
$mail -s "$subject : $database" $mailto < ${backupdir}/${DOW}-${database}.sql.gz.uu
done
fi
# FTP it to the off-site server
echo "FTP file to $ftpserver FTP server"
if [ $ftpbackup = "y" ]
then
for database in $databases
do
echo "==> ${backupdir}/${DOW}-${database}.sql.gz"
ftp -n $ftpserver <<EOF
user $ftpuser $ftppasswd
bin
prompt
cd $ftpdir
lcd ${backupdir}
put ${DOW}-${database}.sql.gz
quit
EOF
done
fi
# And we're done
ls -l ${backupdir}
echo "Dump Complete!"
exit
Upload backup.sh to your server, to any directory you want. A directory which is not web-accessible will stop your login information being seen by just anyone .
You should chmod the file to 777:
Code:
chmod 777 backup.sh
If you uploaded this file from a Windows machine you will need to convert the file to Unix format. You should run the following command by SSH in the appropriate directory:
Code:
dos2unix backup.sh
If you don't have dos2unix installed, you can install it using yum if you have that:
Code:
yum install dos2unix
If you don't have yum, get it here.
You may want to test the script at this point to make sure it's doing what you want it to. Change to the appropriate directory and run this command:
Code:
./backup.sh
Once you're happy with it, enter it into the crontab to run daily (or whenever you want). Cron jobs vary a lot depending on the configuration of your system, so check Google for how to do it on your system. The command you will need to run by cron is:
Code:
/path/to/file/backup.sh
How To Get Copy Of All Mysql Databases Into Individual Tar.gz Files
Mar 26, 2009I'm trying to use the "mysqldump" command to get a copy of all databases on the server...
but I need each database to go into a "databaseXYZ.tar.gz" file.
Does anyone know how to do this? So far, I can only get all the databases into a single file. But I need each database to have its own file.
Automatically Restart Mysql After High Server Load
Jan 29, 2009Anyone know a good script that I can run with cron or something? Mysql seems to be the #1 problem with a lot of my web sites, a restart usually fixes it right away for me, but I can't keep restarting my servers everyday manually.
View 1 Replies View RelatedConfiguring Server To Handle Both MySQL And MS Access Databases
Mar 24, 2008Since I have never worked on the server end of things I had a quick question for all you web hosting gurus.
Is it possible to have PHP installed on ONE single server and still have the ability for the server to work with both MS Access AND MySQL at the same time?
I would think YES, but I am being told by our server branch at my current job that this is not the case. They claim there is no way for the server on one machine to be able to handle both types of databases. Are they right?
If they are wrong and it is possible to have one server run both type of databases, what steps would be necessary to set up the server to handle both types? Do we need to tweak the php.ini file or is there another method of allowing the server the ability to work with both MySQL and MS Access.
Sorry if this question seems stupid or odd, as I said, I have minimal experience on the server end but I am confident that a server can handle both.
Apache, Mysql Automatically Start After Reboot Under CentOS
Jul 8, 2007I have one bare server and installed everything myself. however, I found apache, mysqld can not automatically start after reboot, may I know how to enable them to automatically start after reboot?
View 5 Replies View RelatedHow To Configure Mysql To Hold Your Databases On Another Partition On Hard Drive
Oct 31, 2009I have a server that is running linux with cpanel and I am running out of space on a partition.
I was getting this error:
Drive Warning: /dev/sda3 (/var) is 83% full
I looked in the folder and went to /var/lib/mysql and noticed that I have about 6 databases that are a little over 1 GB each. The sda3 partition only has a capacity for 9.9 GB and I was suggested to configure mysql to hold my databases on another partition that has more space..