Today we will upgrade mysql 5.5 to 5.7 in Linux CentOS 7. As we know till date the mysql has launched version 8 successfully.
So, Let’s have a look on Upgrade mysql version in CentOS step by step
STEP 1: Stop the MySQL server
#sudo service mysqld stop
Step 2: Download the Package of the MySQL 5.7 to upgrade
So, this is the tar file that we have to extract by the tar command, let’s have a look into it.
#sudo tar -xvf mysql-5.7.27-1.el7.x86_64.rpm-bundle.tar
Step 3: So, now we will upgrade the extracted package.
#sudo rpm -Uvh *.rpm
It will download all the packages which have a .rpm extension. As you can see in the above screenshot there 10 rpm packages.
#sudo yum-config-manager --enable mysql57-community
This will enable the repo of MySQL version 5.7 and at the same side disable the repo of the MySQL version 5.5
sudo yum-config-manager --disable mysql55-community
Finally, we will run the update command to Update the MySQL 5.5 to MySQL 5.7 in Linux.
#sudo yum update mysql
Because of this command, the commands of mysql will be upgraded.
Step 4: Start the MySQL server
#sudo service mysqld start
Step 5: More important part is to upgrade the existing database also
#sudo mysql_upgrade -uroot -p
So, the command mysql_upgrade was come with by default, when you will install MySQL.
Step 6: Login and check the version of the MySQL.
[tla@tastethelinx etc]# sudo mysql -uroot -proot mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with; or \g. Your MySQL connection id is 7 Server version: 5.7.27 MySQL Community Server (GPL) Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. mysql>
Also, with mysql -V you can check the update version of the MySQL
You can face the error of dependencies failed “error: Failed dependencies: perl(JSON) is needed by mysql-community-test-5.7.27-1.el7.x86_64”
Then you have to install perl-JSON.noarch package by using below command
#sudo yum install perl-JSON.noarch
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