Setup Remote MySQL Server

For WHM version 11.40

(Home >> SQL Services >> Setup Remote MySQL Server)

Overview

This feature allows you to place your MySQL databases on a remote cPanel & WHM server that runs MySQL. A separate server for MySQL can be useful for busy servers or servers with large databases. You can offload MySQL-related work to the remote MySQL server.

This feature does not automatically transfer your MySQL data. Instead, it configures the remote server to work with your MySQL setup. After you configure the remote server, you will need to manually transfer your existing MySQL data, but any new databases you create will reside on the remote MySQL server.

PICK Remember: Do not confuse this feature with the ability to allow access to a MySQL database from a remote server. To configure that option, use the Additional MySQL Access Hosts function.

PICK Important: A remote MySQL server works best when it corresponds to a single cPanel server configuration. While it is possible to use a single remote MySQL server for multiple cPanel servers, we do not recommend this configuration.

Install openssh-clients package

PICK Important: Before you set up a remote MySQL server, ensure that the openssh-clients package is installed on your server. You will not be able to set up a Remote MySQL Server if this package is not installed.

To determine whether the openssh-clients package is installed on your server, run the following command:

rpm -q openssh-clients

If the package is installed, the output will resemble the following:

openssh-clients-5.3p1-81.el6_3.x86_64

If the openssh-clients package is not installed, the output will resemble the following:

package openssh-clients is not installed.

To install the openssh-clients package, run the following command as the root user:

yum install openssh-clients

Make certain that the local server's hostname resolves

Before you set up a remote MySQL server, ensure that the remote server resolves your local server's IP address to its hostname. You also need to ensure that the local server resolves your remote server's IP address to its hostname.

To confirm this, run the host command on the remote server through the command line.

For example:

root@server [~]# host 192.168.0.20
20.0.168.192.in-addr.arpa domain name pointer host.example.com.

note Note: This command resolves the hostname from the IP address.

If you have not set up reverse DNS, you will need to edit /etc/hosts on the remote MySQL server and add an entry for your local server, with the IP address and hostname. This will perform the hostname lookup manually, rather than through the DNS.

For example, 192.168.0.20 host.example.com

Set up the remote MySQL server

To set up a remote MySQL server, perform the following steps:

  1. If it is not already installed on your remote server, install MySQL.
  2. Add the MySQL user's root password for the mysql user to the /root/.my.cnf file.
  3. Review the displayed information, and enter the appropriate data:
    • Remote server address — Specifies the IP address or fully qualified domain name (FQDN) of the remote server.
      note Note: You must specify FQDNs in lowercase letters.
    • Remote SSH port — Specifies the SSH port for the remote server. The default is 22.
    • Login as — Specifies the login name.
      note Note: You can only use the root account with this feature.
    • Select authentication method — Specifies whether to use an SSH key or password to log in to the remote server.
    • Select an installed SSH Key — Specifies an SSH key that will allow you to log in to the account. This option will only appear if Public Key is selected from the Select authentication method. menu. Secure servers will often require an SSH key, because keys are generally more secure than passwords.
    • SSH Key Password — Specifies a password for the key, if one is required. This option will only appear if Public Key is selected from the Select authentication method. menu.
    • Root Password — Specifies the password that you should use when you log in as the root user.
  4. To finish the process, click Setup.

Terminate remote MySQL service

If your server currently uses a remote MySQL server, and you wish to return to a local MySQL server, perform the following steps:

  1. Enter localhost in the Remote server address text box.
  2. Click Setup.

Topic revision: r29 - 24 Dec 2013 - 20:53:56 - Main.SarahHaney