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
ADVERTISEMENT
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?
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?
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.
Easiest Way To Replicate Account On CPanel
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?
Is It Possible To Automatically Replicate Cpanel Accounts Across Servers
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..?
Ways Of Doing Backup
Jan 19, 2007I colocate a server in a nearby datacentre. It's a CentOs+Cpanel server. The problem is my server 2 hard disk is used with no backup. I am thinkin of doing the backup manually myself by walking in the datacentre every weekend with my desktop cpu with new hard drive.
Is there a possible way I can store backup that way?
Ways To Use Commodity Hardware
Apr 14, 2008How would/do you make use of commodity (generally a few years old) servers? At any scale, from 1 to 1,000 of them? Especially things you could sell?
View 6 Replies View RelatedWays In Which VPS Accounts Distinguish Themselves
Oct 8, 2008I compiling a list of ways that vps accounts differ from normal shared hosting, both for myself and other vps newbies (will be published as an article)
I realise not all of these are limitation on all shared hosting accounts or indeed availabale on all vps accounts, but they represent the general rules for each.
So far I have:-
i) high or unlimited number of simaltanious processes.
ii) self setting process time out
iii) high or unlimited simaltanious pop3 account access
iv) guarenteed ram, process access and connectivity
v) high or unlimited email sending allowance (subject to usual spam policies)
vi) unlimited domains
vii) resource allocation per domain
anything else...speciaically im looking for way that shared hosting account are usually limited (like with the above mentioned simaltanious processes) that is not normal for vps accounts.
20 Ways To Secure Your Apache Configuration
Dec 20, 2007you can find a article to "20 ways to Secure your Apache Configuration" in this link:
[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:
Warning: SuexecUserGroup directive requires SUEXEC wrapper.
Best Ways Of Backuping Up Accounts, Frequency
May 13, 2007I have 3 servers and use cPAnel which I will continue to do so as I see they have the greatest lifespan compared to the rest.
However, could anyone advise what will be the most resource-saving and easiest way to backup all customers data in case of failure?
How often do you guys backup?
Care to share your experience?
Ways To Search For Dedicated Servers Meeting Your Needs?
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.
PowerAdmin - Not All Tables Are Ok
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?
Creating A CNAME Entry For DNS Tables
Feb 4, 2006I apoligize in advance if this is the wrong place to post this thread.
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.
Tables Grow In Size And Sometime And Need To Use RAID 5
Nov 2, 2009I have a database which is growing to have about 100 tables. These tables will grow in size and sometime I will need to use RAID 5, I am told by my server provider.
My questions are:-
1. if these other servers are mirrors, should I have the database stored on each server?
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?
View 6 Replies View RelatedWatchguard Firebox Vs Linux IP Tables Box
Mar 6, 2008I am considering on implementing a new firewall in our colo which would have about 10 servers behind it which generates on averages 2.314 megabits/sec for everything.
I am looking at the new Watchguard x750e running version 10 of Fireware which seem like a good fit without breaking the bank but I have also thought of simply implementing a Poweredge server running CentOS and running an IPtables config to provide firewall services.
Anybody have any Feedback on the Watchguard unit or use a Watchguard product in their setup and can comment?
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
Jan 7, 2007Is S2U-MSFC2 able to handle 2 full internet routing tables or even 3?
and what is the difference between
WS-X6408 and WS-X6408A?
WS-X6348-RJ-45 and WS-X6548-RJ45?
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 RelatedHow Set Up Cron Job Auto Empty A Tables Of A Database
Dec 20, 2008How to set up cron job auto empty a table of an database at specify time.
OS: Centos 5 64 bit , Cpanel: cPanel 11.24.4-R32486 - WHM 11.24.2 - X 3.9
Iptables Script :: Configure IP Tables For Firewall
Oct 31, 2008I find it hard to configure IP tables for firewall, can I find already made scripts anywhere?
View 1 Replies View RelatedLock Tables Permission Keeps Getting Revoked From User(SQL)
Jul 12, 2007every 4 or 5 days the lock table permission keeps getting revoked, does anyone have anything that can point me in the general direction of what would cause this? The only thing i can think of is a cpanel layer 2 update has occured a few times during hte periods where the permission is revoked
unfortunately whenever it happens it results in my SQL backup script failing
It's a VPS host running CentOS btw.
Plesk 12.x / Windows :: Wordpress Install Created Duplicate Tables
Feb 8, 2015Window server 2012 r2: I installed wordpress on a domain using plesk. Seemed to work correctly. But when I went to the site www.example.com/wp-admin, the native or default wordpress install started up. I could find no way to bypass this, so I just re-entered all the same settings.
The result was that I ended up with 2 sets of database tables, one set named with my chosen prefix wp_blahblah_ and one set prefixed with wp_blahblah_wp_.
Not good, so I deleted the later set. Wordpress seems to be working, despite one error on the tables I can't reproduce.
I Moved Mysql From /var To /backup/mysql, Mysql Is No Longer Working
May 8, 2009Since my /var partition is full, so I moved /var/lib/mysql to /backup/mysql/.
Seems all the files are copied and I changed my.cnf reboot mysql, but all the web sites using db is not working anymore..
Installed MySQL In /usr/local/mysql But Error In /var/lib/mysql
Jan 21, 2007I installed the MySQL binary packages in /usr/local/mysql/ after removing the MySQL RPM package. MySQL is functioning when I executed /usr/local/mysql/bin/safe_mysqld. I reinstalled MySQL before I installed PHP. When I used a PHP script to access a MySQL database, it outputs an error:
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?
