Browsing articles in "MySql"
Sep
16
2011

Install and setup replication MySQL on Fedora Rackspace Cloud

I assume for this you have already got a database setup with data in it. Install Slave Start up a new Fedora 15 instance in Rackspace Open SSH using Putty and do the following: yum install mysql mysql-server /etc/init.d/mysqld start /usr/bin/mysql_secure_installation When asked for current password just press enter. Then set a root password (make it secure), remove anonymous users, disallow root login remotely and remove the test database. Finally reload the privilege tables. To [...]

Sep
12
2011

Recopy Master Database to Slave on Fedora 14 Rackspace Cloud when out of Sync

MySQL

Sometimes when the slave gets out of sync with the Master, the best thing is to just start again with a fresh copy from the Master.

Aug
7
2011

MySQL Load Balancer Lost connection to MySQL server at ‘reading initial communication packet’, system error: 0

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Fix Lost connection to MySQL server at ‘reading initial communication packet’, system error: 0 on Rackspace Cloud

Feb
16
2011

Calculating Distance in MySQL using Spatial Point Type

MySQL

I have recently been playing around with MySQL Spatial functionality. Although not complete by any means it is a good way to start thinking of storing your location based data. One of the most useful things to do is find the distance between two points. There is a place-holder in MySQL 5 called DISTANCE, however this isn’t yet implemented.

Dec
14
2010

ERROR 6 (HY000): Error on delete of ‘./database//db.opt’ (Errcode: 13)

MySQL

ERROR 6 (HY000): Error on delete of (Errcode: 13)’./database//db.opt’ when trying to DROP a MySQL database

Oct
14
2010

MySQL add new user

To add a new user to MySQL perform the following In PuTTY log into your server with MySQL on it and open MySQL using the following command mysql -u root -p It will now as for your password which you should type in Now set up your users, you can limit where a user can log in from by changing the ‘@’%’. % means from anywhere, localhost ‘@’localhost’ would mean just from the local computer, [...]

Sep
21
2010

Autostart MySQL on CentOS

To start MySql Server automatically on a CentOS box simply issue the following command as root: chkconfig –levels 235 mysqld on You can also use this to autostart Apache: chkconfig –levels 235 httpd on

Sep
3
2010

Fatal error: Call to undefined function mysqli_connect()

Got this error when trying to use MySql in a PHP page on a Fedora install. What had happened is PHP wasn’t installed with MySql support. However it is simple to fix. Open up PuTTY and enter in the following: yum install php-mysql /sbin/service httpd restart

Sep
3
2010

MySql Host is not allowed to connect to this MySQL server

After a new install of MySql when trying to connect remotly I was getting the following error: Host ‘xxx.xxx.xxx.xxx’ is not allowed to connect to this MySQL server To solve this I needed to SSH into my server using PuTTY and perform the following commands: mysql -u root -p [enter in your password] CREATE USER ‘techproblems’@'%’ IDENTIFIED BY ‘MyC0MPL3XPa33W0RD’; GRANT ALL PRIVILEGES ON *.* TO ‘techproblems’@'%’ WITH GRANT OPTION; Once I had done this I [...]

Sep
3
2010

Install Apache, MySql and PHP on Rackspace Cloud Fedora Server

Fedora

Article detailing how to install Apache, MySQL and PHP on a Rackspace Cloud Fedora instance

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