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Upgrade mysql version from 5.5 to 5.6

Upgrade mysql version

This would probably make sense on Amazon EC2 instance where it comes by default with
mysql 5.5, as of this writing, and you want to upgrade mysql to the next version.

In this example I have used version 5.5 for the upgrade mysql example. But, technically the methodology would work for other versions as well unless mysql drastically changes folder locations.

How to upgrade mysql from 5.5 to 5.6

First go ahead and move the mysql 5.5 to new folder

sudo mv /var/lib/mysql /var/lib/mysql55

Then grab the tar from mysql download page [Here]

Once you download the tar file containing the new mysql version do the following commands on your terminal.

sudo tar -xvf yourDownloadedTar.tar
sudo rpm -ivh MySQL-shared-5.6.17-1.el6.x86_64.rpm
sudo rpm -ivh MySQL-client-5.6.17-1.el6.x86_64.rpm
sudo rpm -ivh MySQL-server-5.6.17-1.el6.x86_64.rpm

This would upgrade your current mysql version to mysql 5.6 or which ever is the new mysql version.

Then restart mysql for the change to take effect.

undefined symbol: php_json_encode in Unknown on line 0

Am fighting to install my application on Amazon EC2.. I installed the mongo and php mongo driver then restarted apache to get the above error message.
The problem is loading precedence. Mongo, which is dependent on, is being loaded ahead of the hence crying over ‘Where Is My ehiehiehi’
The fix would be to make sure we are loading json first before the mongo – actually this would be hte problem on while loading memcache as well..
On php.ini –
Right above the, add
Usually will be loaded through its own ini file json.ini
On Redhat Linux it would be inside


So, go to the json.ini and comment the line
restart httpd/apache and