How To Solve Forgot MySQL / MariaDB Root Password
In this article. learn how to reset forgotten mysql / MariaDB root password. Also learn some tips to prevent and manage such situation.
Upgrading MySQL 5.1 to 5.6 service failed to start
Recently we got the system which has MySQL server version 5.1 was running. It was good chance for me to reproduce the issue and show practical answer on question asked on stackoverflow. Operating System: CentOS 6.5Arch : x86_54 Symptom MySQL service failed to start after upgrading from MySQL 5.1 to 5.6 version. Given below is…
How to install MySQL Server 5.6 on CentOS 7 / RHEL 7
In this tutorial we will learn, how to install MySQL Server 5.6 on CentOS 7 / RHEL 7 . In our previous post, we have installed MySQL Server 5.6 on CentOS 6.x/RHEL 7.x. In CentOS 7/ RHEL 7 , now MariaDB is introduced as a defualt database. Still many Organisations/Company would like to continue with…
mysqldump: Got error: 145: Table ‘./DB/table-name’ is marked as crashed
It was time to take backup of mysql database of my server. I run the command mysqldump with some options and found the error, ” mysqldump: Got error: 145: Table ‘./DB/table-name’ is marked as crashed and should be repaired when using LOCK TABLES ” I have seen this error before but not written on this…
How to install mysql server 5.6 on Ubuntu 14.04 LTS ( Trusty Tahr )
In this practical we will learn, how to install mysql server 5.6 on Ubuntu 14.04 LTS ( Trusty Tahr ).At the time of writing this post, MySQL Server has 5.6 version as stable release (release date – 11 April 2014). MySQL is a open source relational database management system (RDBMS). It is popularly used in…
Another MySQL daemon already running with the same unix socket
In this post ,I am sharing the error message ” Another MySQL daemon already running with the same unix socket “. The error found in our own sharadchhetri.com blog while restarting the MySQL server.It is at 6:55 PM IST,I noticed the weird error message on blog,”Error establishing a database connection”.I log into the server and…
How to set delay replication in MySQL slave server
In this tutorial we will learn how to set delay replication in MySQL Master Slave replication. After setting this configuration,slave server deliberately lag behind the Master server as per the delay time you have set. The MySQL server version 5.6 has this feature and it has some benefits which will discuss in this post. Set…
How to configure multiple mysql instance in Ubuntu
How to configure multiple mysql instance in Ubuntu In this tutorial we will learn,how to configure multiple mysql instance in Ubuntu.Here multiple mysql instance means we can run multiple mysql server in single machine.We expect you have already install mysql-server in your system(if not then run the command apt-get install mysql-server). To configure multiple mysql…
How to create multiple mysql instance in CentOS 6.4 and Red Hat 6.4
In this tutorial we will learn about how to create multiple mysql instance in CentOS 6.4 and Red Hat 6.4. Multiple instance means in single system we can create multiple MySQL server. These multiple mysql server will run in different ports.In this practical we expect you already have MySQL server installed in your system. To…
Change mysql default port number in linux
In this post we will learn about how to change mysql default port number in linux.This is a simple tip but it has many benefits. Question: What are the benefits of changing the default port no. 3306 in mysql-server ? Answer: For security point of view we generally change the port no. of MySQL Server…
Setup MySQL master slave replication in CentOS 6
In this tutorial we will learn about how to setup MySQL Master Slave replication in CentOS 6.4.In Master-Slave replication one database server (Master) can replicate the databases to one or more MySQL database Server(slave). The Slave server is not required to be connected always with Master Server, once slave server is up and when you…
mysqldump Error Binlogging on server not active
While using the mysqldump command in one of the MySQL server I got the error mysqldump: Error: Binlogging on server not active . Below given is the quick solution for it. Details of MySQL Server: MySQL Server: mysql-server-5.5.34 Error: Binlogging on server not active Note: The path of my.cnf file In CentOS and Red Hat…
Find mysql commands history without mysql server login
This is a small tip to find mysql commands history without login into mysql server.When we login into MySQL server,generally we uses up and down arrow key to find the history of MySQL commands. Actually the MySQL commands history are saved in file called .mysql_history located in user’s home directory by which he/she logged into…
How to rename table in mysql using command line
In this post we will know how to rename table in mysql using command line. It is basic and important command for MySQL database administration. We are doing this practical in MySQL server version 5.5.29. Syntax: Replace the table_name and NEW_TABLE_NAME as per your requirement. ALTER TABLE table_name RENAME NEW_TABLE_NAME Example: See the below given…
How to copy existing table in mysql
In this post we will learn about how to copy the existing table in mysql. The newly copied table does not have data means it will be blank but it has similar rows information from its parent table. After copying the table you have to insert the data by using INSERT command. Follow the given…