Related
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
How can I do that?
That is allowed by default on MySQL.
What is disabled by default is remote root access. If you want to enable that, run this SQL command locally:
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
And then find the following line and comment it out in your my.cnf file, which usually lives on /etc/mysql/my.cnf on Unix/OSX systems. In some cases the location for the file is /etc/mysql/mysql.conf.d/mysqld.cnf).
If it's a Windows system, you can find it in the MySQL installation directory, usually something like C:\Program Files\MySQL\MySQL Server 5.5\ and the filename will be my.ini.
Change line
bind-address = 127.0.0.1
to
#bind-address = 127.0.0.1
And restart the MySQL server (Unix/OSX, and Windows) for the changes to take effect.
After doing all of above I still couldn't login as root remotely, but Telnetting to port 3306 confirmed that MySQL was accepting connections.
I started looking at the users in MySQL and noticed there were multiple root users with different passwords.
select user, host, password from mysql.user;
So in MySQL I set all the passwords for root again and I could finally log in remotely as root.
use mysql;
update user set password=PASSWORD('NEWPASSWORD') where User='root';
flush privileges;
Just a note from my experience, you can find configuration file under this path /etc/mysql/mysql.conf.d/mysqld.cnf.
(I struggled for some time to find this path)
In my case I was trying to connect to a remote mysql server on cent OS. After going through a lot of solutions (granting all privileges, removing ip bindings,enabling networking) problem was still not getting solved.
As it turned out, while looking into various solutions,I came across iptables, which made me realize mysql port 3306 was not accepting connections.
Here is a small note on how I checked and resolved this issue.
Checking if port is accepting connections:
telnet (mysql server ip) [portNo]
Adding ip table rule to allow connections on the port:
iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
Would not recommend this for production environment, but if your iptables are not configured properly, adding the rules might not still solve the issue. In that case following should be done:
service iptables stop
Hope this helps.
All process for remote login. Remote login is off by default.You need to open it manually for all ip..to give access all ip
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'password';
Specific Ip
GRANT ALL PRIVILEGES ON *.* TO 'root'#'your_desire_ip' IDENTIFIED BY 'password';
then
flush privileges;
You can check your User Host & Password
SELECT host,user,authentication_string FROM mysql.user;
Now your duty is to change this
bind-address = 127.0.0.1
You can find this on
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
if you not find this on there then try this
sudo nano /etc/mysql/my.cnf
comment in this
#bind-address = 127.0.0.1
Then restart Mysql
sudo service mysql restart
Now enjoy remote login
Please follow the below mentioned steps inorder to set the wildcard remote access for MySQL User.
(1) Open cmd.
(2) navigate to path C:\Program Files\MySQL\MySQL Server 5.X\bin and
run this command.
mysql -u root -p
(3) Enter the root password.
(4) Execute the following command to provide the permission.
GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'#'IP' IDENTIFIED BY
'PASSWORD';
USERNAME: Username you wish to connect to MySQL server.
IP: Public IP address from where you wish to allow access to MySQL
server.
PASSWORD: Password of the username used.
IP can be replaced with % to allow user to connect from any IP
address.
(5) Flush the previleges by following command and exit.
FLUSH PRIVILEGES;
exit;
or \q
I had to this challenge when working on a Java Project with MySQL server as the database.
Here's how I did it:
First, confirm that your MySQL server configuration to allow for remote connections. Use your preferred text editor to open the MySQL server configuration file:
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
Scroll down to the bind-address line and ensure that is either commented out or replaced with 0.0.0.0 (to allow all remote connections) or replaced with Ip-Addresses that you want remote connections from.
Once you make the necessary changes, save and exit the configuration file. Apply the changes made to the MySQL config file by restarting the MySQL service:
sudo systemctl restart mysql
Next, log into the MySQL server console on the server it was installed:
mysql -u root -p
Enter your mysql user password
Check the hosts that the user you want has access to already. In my case the user is root:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| localhost |
+-----------+
Next, I ran the command below to grant the root user remote access to the database named my_database:
USE my_database;
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'my-password';
Note: % grants a user remote access from all hosts on a network. You can specify the Ip-Address of the individual hosts that you want to grant the user access from using the command - GRANT ALL PRIVILEGES ON *.* TO 'root'#'Ip-Address' IDENTIFIED BY 'my-password';
Afterwhich I checked the hosts that the user now has access to. In my case the user is root:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| % |
| localhost |
+-----------+
Finally, you can try connecting to the MySQL server from another server using the command:
mysql -u username -h mysql-server-ip-address -p
Where u represents user, h represents mysql-server-ip-address and p represents password. So in my case it was:
mysql -u root -h 34.69.261.158 -p
Enter your mysql user password
You should get this output depending on your MySQL server version:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.31 MySQL Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
Resources: How to Allow Remote Connections to MySQL
That's all.
I hope this helps
Close comment at link /etc/mysql/mysql.conf.d/mysqld.cnf or /etc/mysql/my.cnf:
bind-address = 127.0.0.1 =>> #bind-address = 127.0.0.1
Change the hostname so that all machines can access it, run this SQL command locally:
UPDATE mysql.user SET Host='%' WHERE Host='localhost' AND User='root';
FLUSH PRIVILEGES;
Restart service:
sudo service mysql restart
Open port mysql:
sudo ufw allow 3306
If your MySQL server process is listening on 127.0.0.1 or ::1 only then you will not be able to connect remotely. If you have a bind-address setting in /etc/my.cnf this might be the source of the problem.
You will also have to add privileges for a non-localhost user as well.
If you installed MySQL from brew it really does only listen on the local interface by default. To fix that you need to edit /usr/local/etc/my.cnf and change the bind-address from 127.0.0.1 to *.
Then run brew services restart mysql.
Just F.Y.I
I pulled my hair out with this problem for hours.. finally I call my hosting provider and found that in my case using a cloud server that in the control panel for 1and1 they have a secondary firewall that you have to clone and add port 3306. Once added I got straight in..
For whom it needs it, check firewall port 3306 is open too, if your firewall service is running.
This blog How to setup a MySQL server on Local Area Network will be useful in setting up a MySQL from scratch
If mysqld has a bind address set to a loopback/local address (e.g. 127.0.0.1), the server will not be reachable from remote hosts, because a loopback interface cannot be reached from any remote host.
Set this option to 0.0.0.0 (:: for IPv4+6) to accept connections from any host, or to another externally-reachable address if you want to only allow connections on one interface.
Source
And for OS X people out there be aware that the bind-address parameter is typically set in the launchd plist and not in the my.ini file. So in my case, I removed <string>--bind-address=127.0.0.1</string> from /Library/LaunchDaemons/homebrew.mxcl.mariadb.plist.
Enabling remote root access can be dangerous. It would be preferable if you were to set up user accounts with more restrictive permissions. The following three steps should do it.
Ensure that the line starting with bind-address ... is at least commented out in your my.ini or my.cnf file. If it doesn't exist, move on.
You can find this file in C:\ProgramData\MySQL\MySQL Server 8.0 on Windows.
Afterwards, check that the user account you are establishing the connection with does not have localhost in the Limit to Hosts Matching field. While it isn't recommended, you can instead put % in that field for testing purposes. You can do this by opening a local connection to the server with MySQL Workbench, then going to Server>Users and Privileges from the menu bar and finding the user account you want to connect with.
The "Limit to Hosts Matching" field is what disallows you to connect non-locally. I.e. it limits the accepted connections to a pattern of IP addresses. Ideally, you should be accessing the MySQL server from a static IP address or subnet, so that you can be as restrictive as possible.
Obviously, your firewall should allow the MySQL Server application to communicate over the port you want. The physical networking equipment in between you and your server should allow communication on the port you want to connect with. (port 3306 typically)
MySQL 8 no longer allows you to create a user using the GRANT command. You need to create the user first.
CREATE USER 'root'#'%' IDENTIFIED BY 'PASSWORD';
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' WITH GRANT OPTION;
FLUSH PRIVILEGES;
some times need to use name of pc on windows
first step) put in config file of mysql:
mysqld.cnf SET bind-address= 0.0.0.0
(to let recibe connections over tcp/ip)
second step) make user in mysql, table users, with name of pc on windows propierties, NOT ip
Check remote server grant permission to Wildcard access to port 3306:
sudo lsof -i -P -n | grep LISTEN
It should NOT be same like this:
mysqld 23083 mysql 21u IPv4 145900142 0t0 TCP
127.0.0.1:3306 (LISTEN)
In this case, we need to update /etc/mysql/mysql.conf.d/mysqld.cnf or /etc/mysql/mariadb.conf.d/50-server.cnf with:
bind-address = 127.0.0.1 --> 0.0.0.0
And then restart mysql "sudo service mysql restart"
In order to test mySQL connection from a client:
nc -vz <host_address> 3306
I want to give my junior access of mysql database i have in my system with ubuntu.We are working on one system but need to use one common database.When i add mysql connection of my system in network in cakephp application , it says
> The page isn’t redirecting properly
Change MySQL configuration file as below.
find my.conf file
in ubuntu ii is located in /etc/mysql
use any file editor to change the file like VIM,namo,gedit...etc
i use nano editor, example given below
cd /etc/mysql
sudo nano my.cnf
Find [mysqld] and add new line under this configration as below , if already exist change it.
bind-address = XX.XX.XX.XX (XX.XX.XX.XX is your local machine ip address)
use bind-address = 0.0.0.0 for any host to use for.
after changing restart MySQL
sudo service restart mysql
Now you need to create user and grant all permission to connect remotely.
mysql>GRANT ALL PRIVILEGES ON database.* TO 'username'#'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
If you are using phpMyAdmin the you can create user from it.
Now you are ready to connect remotely.
I have a strange issue on a web server (Windows Server 2012) with MySQL 5.7.16.
I can't connect anymore to mysql server, I don't know why.
If I type mysql -uroot -ppassword appear an error
ERROR 1130 <HY000>: Host '::1' is not allowed to connect to this MySQL server or
ERROR 1130 <HY000>: Host '127.0.0.1' is not allowed to connect to this MySQL server
I tried to use another user with all privileges and I've seen that in host there is only localhost (not 127.0.0.1 or ::1)
How can I login with root#localhost and not with root#127.0.0.1?
It's very frustrating...
Every account trying to use #127.0.0.1 or #::1 but there exist only localhost in host and I can't change it.
If I type mysql -uroot -ppassword I see
ERROR 1130 <HY000>: Host '127.0.0.1' is not allowed to connect to this MySQL server
Same if I type mysql -uroot -ppassword -h localhost or anything else
Ok i Fixed...
I've comment "skip_name_resolve" in my.ini and everything is back to work.. i really don't know why because this record was in my.ini also yesterday..last week.. last month..
The variable skip_name_resolve gives better performance because the server does not try to resolve the names of the connecting clients or look for them every time in the host name cache (even localhost is resolved/searched), but the manual states that config also limits the #localhost connections. The solution is to copy the #localhost users with #127.0.0.1, like this:
CREATE USER 'root'#'127.0.0.1' IDENTIFIED BY 'root-password';
CREATE USER 'root'#'::1' IDENTIFIED BY 'root-password';
FLUSH PRIVILEGES;
where ::1 is localhost for IPv6 addressing. This way we keep the root and local accounts limited to the local server. Using '%' open the potential clients to the world, and we don't want that. Disabling skip_name_resolve also requires the server having an accesible and fast DNS resolver to minimize latency.
I noted that I can connect with a local phpmyadmin even if the user has #localhost; this is because phpmyadmin connects thru a local unix socket, a special type of file used to communicate between processes, and does not need networking.
EDIT: As #Francisco R noted, the new root users also should have full access to all databases by issuing the following commands:
GRANT ALL PRIVILEGES ON *.* TO 'root'#'127.0.0.1'
GRANT ALL PRIVILEGES ON *.* TO 'root'#'::1'
FLUSH PRIVILEGES
I had the same message after a fresh installation with the no-install zip and solved it as follows. Perhaps this could have been a solution for your problem too:
Stop the MySQL server or service.
Open a Command Prompt window with administrative rights and go to the bin folder in the MySQL install directory.
Start MySQL with skip-grants-table and don't forget your config file:
mysqld --defaults-file=[filename] --skip-grant-tables
Open another Command Prompt window and go to the bin folder again.
Now you can login:
mysql -u root -p
Show the users with:
SELECT user, host FROM mysql.user;
Verify there is one 'root' with host 'localhost'.
Change the host:
UPDATE mysql.user SET host='%' WHERE user='root';
Exit the mysql program and close the Command Prompt window.
Type Ctrl-C in the other Command Prompt window to stop the server, then close the Command Prompt Window.
Start MySQL as you normally would and verify that you can login.
Make sure that when you created the user you have specified % as the hostname, otherwise the user will only be able to connect from the localhost.
I came here looking for a solution using Local by flywheel for wordpress development to the same problem, BUT, in a linux machine.
Just if someone faces the same problem, the solution listed here works.
Just comment skip_name_resolve in the file conf/mysql/my.cnf.hbs under the file tree created by Local
Thanks!
Looks that you need to modify your hosts file. C:\Windows\System32\Drivers\etc\hosts
just add the line and save it, (to be able to edit and save you may need to open it as administrator)
127.0.0.1 localhost
I have a Raspberry Pi that stores temperature data for homebrewing activity. I am making a Spring MVC application on my computer and I want to tap the data. Both my Pi and my computer are on the local network. I can SSH and FTP into my RPi perfectly.
mysql --192.168.1.102 --u root -p db
Causes a "Can't connect to MySQL server on '192.168.1.102'".
My Java application isn't connecting either, obviously.
SHOW VARIABLES WHERE VARIABLE_NAME = 'port' ;
returns the default port, 3306.
Is there a setting that must be enabled to allow remote connections into MySQL?
I have recently had the same problem myself. I got it working by doing the following:
Edit MySQL configuration
By default, MySQL is not configured to accept remote connections. You can enable remote connections by modifying the configuration file:
sudo nano /etc/mysql/my.cnf
Find the [mysqld] section. The line you need to alter is bind-address, which should be set to the default value of 127.0.0.1. You want to edit this line to instead show the IP of your RPi on the network (which would seem to be 192.168.1.102 from your example). Write the changes.
Restart the MySQL service
sudo service mysql restart
Setup MySQL permissions
Connect to your MySQL instance as root:
mysql -p -u root
Create a user:
CREATE USER '<username>'#'<ip_address>' IDENTIFIED BY '<password>';
The apostrophes ( ' ) in the syntax are required
The IP address is the IP address of the device on the network you are trying to connect from
Grant permissions to the relevant databases and tables:
GRANT ALL PRIVILEGES ON <database>.* TO '<username>'#'<ip_address>' IDENTIFIED BY '<password>';
The parameters are those you used to create your user in the previous step
The * will grant access to all tables within the specified database. Alternatively you could specify a specific table
You'd probably want to firm up the security by only granting relevant privileges, but that should be enough to test that it works
That should hopefully do it!
The following worked for me, courtesy of a comment found on this instructable:
Grant access to your remote machine using: GRANT ALL ON *.* TO 'root'#'192.168.1.%' IDENTIFIED BY 'your_password_here'; (I used 192.168.1.% so that any computer on my network can connect to it)
Go into the my.cnf file (sudo nano /etc/mysql/my.cnf) file and look for "bind-address" and comment this out (put a # in front of the line)
Reload MySQL config (service mysql reload)
Restart MySQL server (service mysql restart)
If your issue is not able to remotely connect with MySQL on Raspberry Pi, then try below steps. I had the same issue and got it resolved by performing below commands.
1) sudo nano /etc/mysql/my.cnf
2) # bind-address = 127.0.0.1 // comment this line out
bind-address = 0.0.0.0 //add this line just below above line
3) sudo /etc/init.d/mysql restart //restart mysql
4) sudo mysql -u root -p //login to mysql cli as user 'root'
5) GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'beta' WITH GRANT OPTION;
Here 'root' is the mysql user and 'beta' is the password and here privileges are set for 'root'.Change it accordingly and execute above query in mysql cli.
Good Luck !!!
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
How can I do that?
That is allowed by default on MySQL.
What is disabled by default is remote root access. If you want to enable that, run this SQL command locally:
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
And then find the following line and comment it out in your my.cnf file, which usually lives on /etc/mysql/my.cnf on Unix/OSX systems. In some cases the location for the file is /etc/mysql/mysql.conf.d/mysqld.cnf).
If it's a Windows system, you can find it in the MySQL installation directory, usually something like C:\Program Files\MySQL\MySQL Server 5.5\ and the filename will be my.ini.
Change line
bind-address = 127.0.0.1
to
#bind-address = 127.0.0.1
And restart the MySQL server (Unix/OSX, and Windows) for the changes to take effect.
After doing all of above I still couldn't login as root remotely, but Telnetting to port 3306 confirmed that MySQL was accepting connections.
I started looking at the users in MySQL and noticed there were multiple root users with different passwords.
select user, host, password from mysql.user;
So in MySQL I set all the passwords for root again and I could finally log in remotely as root.
use mysql;
update user set password=PASSWORD('NEWPASSWORD') where User='root';
flush privileges;
Just a note from my experience, you can find configuration file under this path /etc/mysql/mysql.conf.d/mysqld.cnf.
(I struggled for some time to find this path)
In my case I was trying to connect to a remote mysql server on cent OS. After going through a lot of solutions (granting all privileges, removing ip bindings,enabling networking) problem was still not getting solved.
As it turned out, while looking into various solutions,I came across iptables, which made me realize mysql port 3306 was not accepting connections.
Here is a small note on how I checked and resolved this issue.
Checking if port is accepting connections:
telnet (mysql server ip) [portNo]
Adding ip table rule to allow connections on the port:
iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
Would not recommend this for production environment, but if your iptables are not configured properly, adding the rules might not still solve the issue. In that case following should be done:
service iptables stop
Hope this helps.
All process for remote login. Remote login is off by default.You need to open it manually for all ip..to give access all ip
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'password';
Specific Ip
GRANT ALL PRIVILEGES ON *.* TO 'root'#'your_desire_ip' IDENTIFIED BY 'password';
then
flush privileges;
You can check your User Host & Password
SELECT host,user,authentication_string FROM mysql.user;
Now your duty is to change this
bind-address = 127.0.0.1
You can find this on
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
if you not find this on there then try this
sudo nano /etc/mysql/my.cnf
comment in this
#bind-address = 127.0.0.1
Then restart Mysql
sudo service mysql restart
Now enjoy remote login
Please follow the below mentioned steps inorder to set the wildcard remote access for MySQL User.
(1) Open cmd.
(2) navigate to path C:\Program Files\MySQL\MySQL Server 5.X\bin and
run this command.
mysql -u root -p
(3) Enter the root password.
(4) Execute the following command to provide the permission.
GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'#'IP' IDENTIFIED BY
'PASSWORD';
USERNAME: Username you wish to connect to MySQL server.
IP: Public IP address from where you wish to allow access to MySQL
server.
PASSWORD: Password of the username used.
IP can be replaced with % to allow user to connect from any IP
address.
(5) Flush the previleges by following command and exit.
FLUSH PRIVILEGES;
exit;
or \q
I had to this challenge when working on a Java Project with MySQL server as the database.
Here's how I did it:
First, confirm that your MySQL server configuration to allow for remote connections. Use your preferred text editor to open the MySQL server configuration file:
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
Scroll down to the bind-address line and ensure that is either commented out or replaced with 0.0.0.0 (to allow all remote connections) or replaced with Ip-Addresses that you want remote connections from.
Once you make the necessary changes, save and exit the configuration file. Apply the changes made to the MySQL config file by restarting the MySQL service:
sudo systemctl restart mysql
Next, log into the MySQL server console on the server it was installed:
mysql -u root -p
Enter your mysql user password
Check the hosts that the user you want has access to already. In my case the user is root:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| localhost |
+-----------+
Next, I ran the command below to grant the root user remote access to the database named my_database:
USE my_database;
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' IDENTIFIED BY 'my-password';
Note: % grants a user remote access from all hosts on a network. You can specify the Ip-Address of the individual hosts that you want to grant the user access from using the command - GRANT ALL PRIVILEGES ON *.* TO 'root'#'Ip-Address' IDENTIFIED BY 'my-password';
Afterwhich I checked the hosts that the user now has access to. In my case the user is root:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| % |
| localhost |
+-----------+
Finally, you can try connecting to the MySQL server from another server using the command:
mysql -u username -h mysql-server-ip-address -p
Where u represents user, h represents mysql-server-ip-address and p represents password. So in my case it was:
mysql -u root -h 34.69.261.158 -p
Enter your mysql user password
You should get this output depending on your MySQL server version:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.31 MySQL Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
Resources: How to Allow Remote Connections to MySQL
That's all.
I hope this helps
Close comment at link /etc/mysql/mysql.conf.d/mysqld.cnf or /etc/mysql/my.cnf:
bind-address = 127.0.0.1 =>> #bind-address = 127.0.0.1
Change the hostname so that all machines can access it, run this SQL command locally:
UPDATE mysql.user SET Host='%' WHERE Host='localhost' AND User='root';
FLUSH PRIVILEGES;
Restart service:
sudo service mysql restart
Open port mysql:
sudo ufw allow 3306
If your MySQL server process is listening on 127.0.0.1 or ::1 only then you will not be able to connect remotely. If you have a bind-address setting in /etc/my.cnf this might be the source of the problem.
You will also have to add privileges for a non-localhost user as well.
If you installed MySQL from brew it really does only listen on the local interface by default. To fix that you need to edit /usr/local/etc/my.cnf and change the bind-address from 127.0.0.1 to *.
Then run brew services restart mysql.
Just F.Y.I
I pulled my hair out with this problem for hours.. finally I call my hosting provider and found that in my case using a cloud server that in the control panel for 1and1 they have a secondary firewall that you have to clone and add port 3306. Once added I got straight in..
For whom it needs it, check firewall port 3306 is open too, if your firewall service is running.
This blog How to setup a MySQL server on Local Area Network will be useful in setting up a MySQL from scratch
If mysqld has a bind address set to a loopback/local address (e.g. 127.0.0.1), the server will not be reachable from remote hosts, because a loopback interface cannot be reached from any remote host.
Set this option to 0.0.0.0 (:: for IPv4+6) to accept connections from any host, or to another externally-reachable address if you want to only allow connections on one interface.
Source
And for OS X people out there be aware that the bind-address parameter is typically set in the launchd plist and not in the my.ini file. So in my case, I removed <string>--bind-address=127.0.0.1</string> from /Library/LaunchDaemons/homebrew.mxcl.mariadb.plist.
Enabling remote root access can be dangerous. It would be preferable if you were to set up user accounts with more restrictive permissions. The following three steps should do it.
Ensure that the line starting with bind-address ... is at least commented out in your my.ini or my.cnf file. If it doesn't exist, move on.
You can find this file in C:\ProgramData\MySQL\MySQL Server 8.0 on Windows.
Afterwards, check that the user account you are establishing the connection with does not have localhost in the Limit to Hosts Matching field. While it isn't recommended, you can instead put % in that field for testing purposes. You can do this by opening a local connection to the server with MySQL Workbench, then going to Server>Users and Privileges from the menu bar and finding the user account you want to connect with.
The "Limit to Hosts Matching" field is what disallows you to connect non-locally. I.e. it limits the accepted connections to a pattern of IP addresses. Ideally, you should be accessing the MySQL server from a static IP address or subnet, so that you can be as restrictive as possible.
Obviously, your firewall should allow the MySQL Server application to communicate over the port you want. The physical networking equipment in between you and your server should allow communication on the port you want to connect with. (port 3306 typically)
MySQL 8 no longer allows you to create a user using the GRANT command. You need to create the user first.
CREATE USER 'root'#'%' IDENTIFIED BY 'PASSWORD';
GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' WITH GRANT OPTION;
FLUSH PRIVILEGES;
some times need to use name of pc on windows
first step) put in config file of mysql:
mysqld.cnf SET bind-address= 0.0.0.0
(to let recibe connections over tcp/ip)
second step) make user in mysql, table users, with name of pc on windows propierties, NOT ip
Check remote server grant permission to Wildcard access to port 3306:
sudo lsof -i -P -n | grep LISTEN
It should NOT be same like this:
mysqld 23083 mysql 21u IPv4 145900142 0t0 TCP
127.0.0.1:3306 (LISTEN)
In this case, we need to update /etc/mysql/mysql.conf.d/mysqld.cnf or /etc/mysql/mariadb.conf.d/50-server.cnf with:
bind-address = 127.0.0.1 --> 0.0.0.0
And then restart mysql "sudo service mysql restart"
In order to test mySQL connection from a client:
nc -vz <host_address> 3306