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.
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MySQL 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?
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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?
Mysql 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.
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Mar 29, 2007I'm in the process of updating a big account from one platform to another, and I thought of using a test site before.
What's the easiest way to replicate an account using a different domain with cPanel/WHM?
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May 23, 2009I have 2 Cpanel VPS and a Cpanel reseller account, each of them with different providers.
What I would like to do is replicate my company's website, billing and support sites across the 3 locations, for achieving a fail over configuration.
Reseller Ways
Mar 25, 2009I recently bought a VPS from [url].. Probably about a week and a half ago. The VPS runs great, everything's going fine, but I'm wondering what is up with their company... I can't access billing, and their frontpage has been replaced with this message:
Quote:
I am sorry to see no website. We are redoing alot of things with our company. If you need any support do so by emailing us We can get them. At [url]or [url]We you are a customer and need support you can do so by emailing and one of our techs will get back to you.
If you're a company, don't you think you should notify your customers in a more professional manner than just putting a small message up on your website?
I've tried emailing support to ask them what's going on because honestly I don't feel too comfortable putting my files on this VPS and not knowing if it will exist tomorrow... It's been 24 hours since my email and I haven't received a response yet. 2 weeks ago when I looked into this company I received responses from Sales within minutes and now all of a sudden nothing at all..?
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Is there a possible way I can store backup that way?
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So far I have:-
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[url]
I have a problem after change permissions :
chown -R root:root /usr/local/apache
chmod -R o-rwx /usr/local/apache
after run above commands when I trying to restart apache show me this error:
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How often do you guys backup?
Care to share your experience?
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Jul 5, 2008I've often hunted for a dedicated server that needed to have certain criteria, and it's usually overwhelming comparing servers from different companies. For example, if I need 4GB, one may come with 4GB RAM, while another has 2GB standard with the option of getting another 2GB for a small extra fee.
Is there a site that lets you enter your criteria, and it will list servers that meet your needs? For example, you could have it list servers with at least 8GB of RAM, or servers with 500+GB hard drive and 1000GB transfer/month, etc.
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Dec 17, 2007This is the error that i get when i run test_setup.php:
Not all tables are ok!
Sorry, but there are error(s) found in the following table(s): 'records' 'domains'.
Please fix these errors and run the script again.
---
whereas rest of the tables (users, users_seq and zones)have been created.
Did i forget some step where these tables were to be created?
How can i create these tables now?
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I am trying to create a CNAME entry in my DNS tables and have no clue where to begin.
I have did a search but didnt find anything that gives reference on how to do it just how to fix errors.
Can anyone point me in the right direction to learning how to accomplish this task.
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My questions are:-
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2. when one server gets too busy, does the RAID query a lesser-used server so as not to bog down the first one?
3. Or, do I need to have different content in each db on each server so a query gets what it needs form each?
Any Way To Use Mysqlcheck With Custom Tmp Tables Folder
Mar 24, 2009I am using /usr/bin/mysqlcheck --all-databases --check --auto-repair to check all MySQL DBs every day via cron. But sometimes when the DB crash and is being repaired the tmpdir = in /etc/my.cnf is getting full 100%. Is it any smart way to use some other tmp folder when repairing the DB tables like that?
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Creating Temp Tables On Disk
May 7, 2007In phpMyAdmin I see this:
Created_tmp_disk_tables 2,118 The number of temporary tables on disk created automatically by the server while executing statements. If Created_tmp_disk_tables is big, you may want to increase the tmp_table_size value to cause temporary tables to be memory-based instead of disk-based.
Created_tmp_files 0 How many temporary files mysqld has created.
Created_tmp_tables 5,637 The number of in-memory temporary tables created automatically by the server while executing statements.
I have tried upping tmp_table_size but it's no use. My my.cnf file:
Quote:
# Example MySQL config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MySQL.
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /var/lib/mysql) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password= your_password
port= 3306
socket= /var/lib/mysql/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port= 3306
socket= /var/lib/mysql/mysql.sock
skip-locking
key_buffer = 384M
max_allowed_packet = 1M
table_cache = 384
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
tmp_table_size = 300M
max_tmp_tables=100
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Replication Master Server (default)
# binary logging is required for replication
log-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id= 1
# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin
# Point the following paths to different dedicated disks
#tmpdir= /tmp/
#log-update = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using BDB tables
#bdb_cache_size = 384M
#bdb_max_lock = 100000
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql/
#innodb_log_arch_dir = /var/lib/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 384M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 100M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
This server has 1GB of RAM, not a dedicated sql server though. RAM usage is low too, 567MB of RAM is being used right now total... is there something I'm overlooking?
Is S2U-MSFC2 Able To Handle 2 Full Tables
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Code:
Warning: mysqli::mysqli() [function.mysqli-mysqli]: (HY000/2002): can't connect to local mysql server through socket /var/lib/mysql/mysql.sock in index.php on line 2
However, I installed MySQL in /usr/local/mysql, not in /var/lib/mysql. How do I fix MySQL?