Bobcares

MySQL Bind Address in Ubuntu – How we set it right

by | Feb 22, 2020

Oops!! Facing trouble setting the MySQL bind-address in Ubuntu? We can help you.

Bind-address tells on which networks MySQL should listen for connections.

At Bobcares, we often get requests to fix MySQL errors, as a part of our Server Management Services.

Today, let’s see how our Support Engineers set the proper bind address for our customers.

 

What is this MySQL bind-address in Ubuntu?

Firstly, let’s see the details of the MySQL bind address.

It is the value that tells the IP address on which MySQL listens for the connections. There are mainly three basic ways for configuring bind-address, that make MySQL server available to:

  •  no network
  •  all network
  • And, to a specific network

 

1. To no network

Firstly, binding to no network means MySQL listens to connections only from the localhost. Here, the bind-address takes a value of 127.0.0.1, the loopback IP address. Here, MySQL can be accessed only by applications running on the same host.

From our experience in managing database servers, we see most web hosting servers use this way. It can easily accommodate all the applications that use local databases. Thus, a WordPress user can easily connect to his database.

 

2. To all network

Whereas MySQL listening to all network means, in the bind-address configuration we specify IP as 0.0.0.0. Here, MySQL listens from all networks. The exact value appears as

bind-address = 0.0.0.0

Here, the server accepts connections on all IPv4 addresses on the server. Furthermore, to permit both IPv4 and IPv6 connections on all server interfaces, we set the MySQL bind address. The Wildcard address values here means one of the following string values: ‘*’, ‘::’ and ‘0.0.0.0’.

This is the default configuration for bind-address. But, this lacks security. So, we usually configure the server firewall in a way to allow MySQL connections from specific IP addresses only.

To allow incoming MySQL connections from a specific IP address or subnet, we use the command,

ufw allow from IP/subnet to any port 3306

Here, we replace the IP/subnet using the required IP address or the entire subnet that is to be allowed.

 

3. Listen to a specific network

Here, MySQL is allowed to listen only to a specific network interface. The value, in this case, will be

bind-address= 192.168.1.1

In a shared host, we always suggest using the IP of the server as the bind-address. Again, MySQL Server 8.0.13 allows configuring the address listening to more than one specific interface.

 

How do we fix the MySQL bind address error?

While dealing with MySQL, we may encounter some problems related to bind-address also. Today, let’s discuss some scenarios where our customers faced trouble with this bind-address.

Recently, one of our customers approached us with MySQL bind address problem in his Digital Ocean droplet. After creating a new Ubuntu droplet using the snapshot, he was unable to log into MySQL using the login credentials.

So, our Engineers checked in detail and found that the MySQL service was down. So, we checked the error log and found the following:

Bind Address MySQL Ubuntu

Hence, our Engineers checked whether the bind-address was given properly. We found that the customer created the new droplet from a snapshot, but the IP address in configuration was of previous servers.

So, we followed the steps below for changing the IP.

Firstly, we opened the MySQL configuration file at  /etc/mysql/my.cnf.

Then, added the new droplet’s IP in bind-address as shown:

Bind Address MySQL Ubuntu

Then restarted the MySQL service using the command below:

service mysql restart

This fixed the problem and customer successfully accessed MySQL.

Instead of giving the server’s IP, we can also give the loop-back address i.e. 127.0.0.1.

[Trouble with MySQL bind-address setting? We are here to help you.]

 

Conclusion

In short, we may face problems like MySQL down due to incorrect bind-address. Today, we discussed in detail on how our Support Engineers fix MySQL bind-address error in the Ubuntu server for our customers.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

GET STARTED

var google_conversion_label = "owonCMyG5nEQ0aD71QM";

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Never again lose customers to poor
server speed! Let us help you.

Privacy Preference Center

Necessary

Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

PHPSESSID - Preserves user session state across page requests.

gdpr[consent_types] - Used to store user consents.

gdpr[allowed_cookies] - Used to store user allowed cookies.

PHPSESSID, gdpr[consent_types], gdpr[allowed_cookies]
PHPSESSID
WHMCSpKDlPzh2chML

Statistics

Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.

_ga - Preserves user session state across page requests.

_gat - Used by Google Analytics to throttle request rate

_gid - Registers a unique ID that is used to generate statistical data on how you use the website.

smartlookCookie - Used to collect user device and location information of the site visitors to improve the websites User Experience.

_ga, _gat, _gid
_ga, _gat, _gid
smartlookCookie
_clck, _clsk, CLID, ANONCHK, MR, MUID, SM

Marketing

Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers.

IDE - Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

test_cookie - Used to check if the user's browser supports cookies.

1P_JAR - Google cookie. These cookies are used to collect website statistics and track conversion rates.

NID - Registers a unique ID that identifies a returning user's device. The ID is used for serving ads that are most relevant to the user.

DV - Google ad personalisation

_reb2bgeo - The visitor's geographical location

_reb2bloaded - Whether or not the script loaded for the visitor

_reb2bref - The referring URL for the visit

_reb2bsessionID - The visitor's RB2B session ID

_reb2buid - The visitor's RB2B user ID

IDE, test_cookie, 1P_JAR, NID, DV, NID
IDE, test_cookie
1P_JAR, NID, DV
NID
hblid
_reb2bgeo, _reb2bloaded, _reb2bref, _reb2bsessionID, _reb2buid

Security

These are essential site cookies, used by the google reCAPTCHA. These cookies use an unique identifier to verify if a visitor is human or a bot.

SID, APISID, HSID, NID, PREF
SID, APISID, HSID, NID, PREF