I was able to get it to work in a series of steps. Its a yum issue after other databases are installed and not cleaned up before installing mysql
clear sasl first: sudo yum remove cyrus-sasl
if you have installed maria, there will be conflicts, remove that as well
sudo yum remove mariadb mariadb-server mariadb-libs
take note of anything uninstalled by this to re-add later. If this is too much, you can take a risk and not remove sasl, but it might not reset the availability of the package.
Start here to clean up the dependency issues: https://serverfault.com/questions/873955/how-solve-mysql-5-7-dependency follow the command given by clean all as sudo rm -rf /var/cache/yum/*
This can possibly resolve your issues right there, if not continue the installation below.
delete all data left in /var/lib/mysql/ or you may have upgrade issues.
resinstall sasl:
sudo yum install cyrus-sasl cyrus-sasl-devel and any other packages removed above.
Establish mysql5.7 with the yum services.
wget https://dev.mysql.com/get/mysql57-community-release-el6-11.noarch.rpm
sudo yum localinstall -y mysql57-community-release-el6-11.noarch.rpm
sudo yum repolist enabled | grep "mysql.*-community.*"
sudo yum repolist enabled | grep mysql
sudo yum install -y mysql-community-common mysql-community-libs mysql-community-server mysql-community-client
if that doesn't work, re-clear the yum cache again and re-run sudo yum install -y mysql-community-server
if that works, then
sudo service mysqld start
IF the /var/lib/mysql is empty, it will have created a temporary password in the /var/log/mysqld.log (use sudo to read)
run sudo mysql_secure_installation and establish your real password and security settings.
now you should have access via mysql -u root -p
