I installed mysql using
yum install mysql-server on centos 5.9 and realized it’s version 5.0. I need version 5.5 so then I did
yum install mysql55-server however I couldn’t find a way to start server version 5.5 instead of 5.0.
service mysqld start will start 5.0 server and removing mysql 5.0 doesn’t help either because
service mysqld start fail to find mysqld service
Update 1 Nov 2013:
I noticed mysql55 package was being installed to
/opt/rh/mysql55/root/usr/bin, so I appended that into the start of my PATH env var but
service mysqld start still runs 5.0 server.
If I tried running the server using
mysqld_safe located on above mysql55 path but it says
[root@***** bin]# mysqld_safe Use "scl enable mysql55 'service ...'" invocation
Not quite sure what it means.
I checked the running mysql version by connecting to it using mysql command line client.
[root@***** bin]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.0.95 Source distribution
You appear to be running a Red Hat Software Collection. These are specially built software packages which exist outside the standard system and thus require special commands to use.
For instance, the updated package’s init script will be prefixed with the software collection’s name:
service mysql55-mysqld status
And you must start a command with
scl enable if you want the command to have access to the software collection.
scl enable mysql55 mysql -u root -p
See the release notes for more, including instructions on upgrading a MySQL database from 5.x to 5.5.
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