[AWS EC2] How to install only MySQL client on Amazon Linux 2 and connect to RDS


--Install only the MySQL client on AWS EC2 (AMI: Amazon Linux 2) and connect to MySQL on RDS


Construction procedure

1. Remove the already installed mariadb

--MariaDB is installed by default on Amazon Linux 2 ――It will be a problem if you interfere, so delete it just in case

$ yum list installed | grep mariadb
mariadb-libs.x86_64                   1:5.5.64-1.amzn2               installed
$ sudo yum remove mariadb-libs
  mariadb-libs.x86_64 1:5.5.64-1.amzn2
Dependency Removed:
  postfix.x86_64 2:2.10.1-6.amzn2.0.3

2. Add the mysql8.0 repository

--Check if mysql8.0 can be installed with yum info --Cannot install, so add mysql8.0 repository

$ yum info mysql
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
31 packages excluded due to repository priority protections
Error: No matching Packages to list

$ sudo yum localinstall -y https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
  mysql80-community-release.noarch 0:el7-3

3. Enable the mysql8.0 repository

--mysql5.7 is also included in mysql80-community-release-el7-3.noarch --I want to install mysql8.0 this time --Disable the mysql5.7 repository and enable the mysql8.0 repository

$ sudo yum-config-manager --disable mysql57-community
$ sudo yum-config-manager --enable mysql80-community

4. Install mysql-community-client

$ sudo yum install -y mysql-community-client
  mysql-community-client.x86_64 0:8.0.19-1.el7
Dependency Installed:
  mysql-community-common.x86_64 0:8.0.19-1.el7                               mysql-community-libs.x86_64 0:8.0.19-1.el7
  ncurses-compat-libs.x86_64 0:6.0-8.20170212.amzn2.1.3

$ mysql --version
mysql  Ver 8.0.19 for Linux on x86_64 (MySQL Community Server - GPL)

5. Connect to RDS

--It is assumed that communication on port 3306 from EC2 to RDS is permitted.

$ mysql -h hoge.rds.amazonaws.com -P 3306 -u root -p
Enter password:
mysql> show databases;
| Database           |
| information_schema |
| mysql              |
| performance_schema |
3 rows in set (0.03 sec)


-I installed 4 versions of MySQL client on Amazon Linux2. With Ansible Playbook

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