November 19

MySQL: migration

 - This is an example of how I did it.  It is not exhaustive, but close.

On the old server:
Dump the needed Databases:
  mysqldump -u root -p dbname1 > dbname1.dump
  mysqldump -u root -p dbname2 > dbname2.dump
  mysqldump -u root -p dbname3 > dbname3.dump

On the new server:

Download mysql from Oracle and unzip it:

tar -zxvf mysql-commercial-5.7.20-1.1.el7.x86_64.repo.tar.gz

cd mysql-5.7/

cd 5.7.20/

If installing on Red Hat check to make certain mariadb is uninstalled:
yum remove mariadb*

Install the mysql rpms:
rpm -ivh mysql-commercial-common-5.7.20-1.1.el7.x86_64.rpm 
rpm -ivh mysql-commercial-libs-*
rpm -ivh mysql-commercial-libs-5.7.20-1.1.el7.x86_64.rpm 
rpm -ivh mysql-commercial-libs-compat-5.7.20-1.1.el7.x86_64.rpm 
rpm -ivh mysql-commercial-client-5.7.20-1.1.el7.x86_64.rpm 
rpm -ivh mysql-commercial-server-5.7.20-1.1.el7.x86_64.rpm 

systemctl start mysqld.service
systemctl status mysqld.service 

grep 'temporary password' /var/log/mysqld.log

systemctl enable mysqld.service

mysql -u root -p

systemctl restart mysqld

nano /etc/my.cnf
# For advice on how to change settings please see

# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

# Disabling symbolic-links is recommended to prevent assorted security risks

innodb_data_file_path = ibdata1:10M:autoextend



#configurations for agileapps
max_allowed_packet = 8M

mysql -u root -p

mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql

systemctl restart mysqld
systemctl status firewalld.service 
systemctl disable firewalld.service 
systemctl stop firewalld.service 

hostnamectl set-hostname servername


mysql -u root -p
mysql> create database dbname1;
mysql> use dbname1;
mysql> source dbname1.dump;
mysql> create database dbname2;
mysql> use dbname2;
mysql> source dbname2.dump;mysql>
create database dbname3;
mysql> use dbname3;
mysql> source dbname3.dump;
Category: Databases | Comments Off on MySQL: migration
November 19

MySQL: update a remote user connection

mysql -u root -p
SELECT User, Host FROM mysql.user;
UPDATE mysql.user SET host = ‘ or ip’ where host = ‘ or ip’ AND user = ‘root’;
flush privileges;

Category: Databases | Comments Off on MySQL: update a remote user connection
November 19

MySQL: add a remote user connection

Show all user info:
SELECT host,user,authentication_string FROM mysql.user;

mysql -u root -p
SELECT User, Host FROM mysql.user;
GRANT ALL privileges on . to ‘root’@’’;
flush privileges;

Category: Databases | Comments Off on MySQL: add a remote user connection