Connecting to MySQL from Workbench - mysql

MySQL remote access
I have a mysql database, running on Ubuntu Server 12.04 that I need to access remotely. For some reason this is become much more of a chore than I think it should be.
I have been through countless threads trying to resolve this issue with no luck what so ever. I do not have another linux box to test my connection. I am only using the MySQL Workbench from a Window 7 machine.
Here is what I have done so far:
set the iptables to accept
set the my.cnf to have the bind address of the server
created a user for both localhost and %
grant all to those users
restarted mysql
verified the user has all priv
verified mysql is listening on 3306
give the correct setting to Workbench and I get
"Your connection attempt failed for user 'USER' from your host to server at x.x.x.x:3306:
Can't connect to MySQL server on 'x.x.x.x' (10061)"
EDIT: I did notice that it show 'localhost and NOT the ipaddress when I run this cmd, but i'm not sure how to change that, or if it is even the issue. Thoughts?
# lsof -i -P | grep :3306
mysqld 5775 mysql 10u IPv4 154265 0t0 TCP localhost:3306 (LISTEN)

vim /etc/mysql/my.cnf
Change the following line to reflect as below:
(bind-address = 127.0.0.1)
bind-address = 0.0.0.0
Close the file then and restart mysql
To verify that mysql port 3306 is listening on all interfaces:
netstat -lnt | grep 3306
You should see this:
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN

Find mysql config file (/etc/mysql/)
comment out the following line by putting a hash character in front of it as shown -> #bind-address = 127.0.0.1
-> Restart the server: sudo service mysql restart

Related

How can I connect to mysql database which is on the server locally?

I've imported my databases on the server and I want to access them locally. The problem is I cannot. I mean the server doesn't response to my request.
I've added root to having access to "mydb" user list and I've given (granted) all privileges to it. Also I've commented bind_address in my.conf file and then I've restarted the mysql.
Still when I run this command:
telnet <ip> 3306
No response received.
Any idea how can I make a connection between my local and the database on the server?
MyTests:
sudo netstat -plnt
tcpdump port 3306
sudo netstat -tulnp | grep 3306

mysql not connect from remove pc installed on Amazon EC2

I have just created one instance on Amazon EC2 for CentOs, and installed mysql on it with root user (password is blank). Then I had created another user for me to connect this instance from remote pc (my local pc). for that I had run following command on terminal one by one.
CREATE USER 'demouser'#'%' IDENTIFIED BY 'demopassword';
GRANT ALL PRIVILEGES ON *.* to 'demouser'#'%';
FLUSH PRIVILEGES;
Then I wrote following line in /etc/my.cnf under [mysqld] section
bind-address=0.0.0.0
Then restarted mysql with following command
sudo /sbin/service mysqld restart
Still, It is not allowed to connect that instance from my local pc. I don't understand what is the problem? I had checked and confirmed that rules on Amazon Security Groups are set properly. (e.g. port 3306 & 22 set to 0.0.0.0 ip address, means any ip address can connect using both ports).
Can someone saw me the mistake of mine?
Slowed
I ran following command to update ipaddress in centos terminal;
sudo iptables -I INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
and It's getting connected... !!!!

MySQL not accepting remote connections

Background: I'm using 2 nodes, one I'm calling services and one I'm calling storage. I'm using chef to provision the nodes and I'm using vagrant to virtualise the nodes. All passwords are virtualised local environments only, before people get upset
I've had it setup before where the storage node has been running MySQL and the services node has been running php and able to connect to the storage node.
Recently I've completely destroyed and uped the VMs again and the storage node is no longer accepting connections to MySQL from remote hosts
vagrant#services:~$ mysql -u web_app -ppassword -h 192.168.33.2
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.33.2' (111)
vagrant#storage:~$ mysql -u root -ppassword
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 46
Server version: 5.5.36-34.0-632.precise (Ubuntu)
I've setup my MySQL permissions as such http://pastie.org/pastes/8946859/text?key=xdtlskj5gwl5qypowcvpa
Following the advice given on a few other questions dotted around on the site
vagrant#storage:~$ less /etc/my.cnf | grep bind-address
bind-address = 0.0.0.0
vagrant#storage:~$ sudo netstat -lpn | grep 3306
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 6008/mysqld
This to me looks like MySQL is listening on address 0.0.0.0 on port 3306, which should be ok.
Really lost by this one, especially as I'm using chef and don't recall changing any config options since it last worked...
Solved my own problem to an extent. Just checked /etc/mysql/my.cnf and it looks like the bind address was set to 127.0.0.1
Have changed this to 0.0.0.0 restarted and the server and can now connect remotely
Just got to make this work with chef again...

ERROR 2003 (HY000): Can't connect to MySQL server (111)

This question is related to the following questions:
Can't connect to MySQL server error 111
Trying to connect to remote MySQL host (error 2003)
I am configuring a new MySQL (5.1) server on my local machine. I need to provide remote access to the database. I did the following steps:
Comment bind-address in my.cnf:
# bind-address = 192.168.1.3
Grant privileges:
GRANT ALL PRIVILEGES ON *.* TO 'nickruiz'#'%' IDENTIFIED BY PASSWORD 'xxxx';
Set port forwarding on router (TCP and UDP, port 3306, 192.168.1.3)
Configure iptables for firewall
sudo iptables -I INPUT -p udp --dport 3306 -j ACCEPT
sudo iptables -I INPUT -p tcp --dport 3306 --syn -j ACCEPT
sudo iptables-save
Restart mysql server sudo /etc/init.d/mysql restart
When testing, I get the following:
LAN:
mysql -h 192.168.1.3 -u nickruiz -p
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 95
Server version: 5.1.63-0ubuntu0.11.04.1 (Ubuntu)
Remote:
mysql -h 1xx.xx.4.136 -u nickruiz -p
ERROR 2003 (HY000): Can't connect to MySQL server on '1xx.xx.4.136' (111)
Clearly there's something wrong that's preventing me from being able to use my global IP address.
Notes:
I've tried testing the remote connection on the same machine and also
via SSH from a remote machine.
I'm not sure if my ISP has given me a static IP.
Any ideas?
Update:
telnet doesn't seem to be working.
telnet 192.168.1.3 3306
Trying 192.168.1.3...
Connected to 192.168.1.3.
Escape character is '^]'.
E
5.1.63-0ubuntu0.11.04.1,0g8!:#pX;]DyY0#\)SIConnection closed by foreign host.
Please check your listenning ports with :
netstat -nat |grep :3306
If it show
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN
Thats is ok for your remote connection.
But in this case i think you have
tcp 0 192.168.1.3:3306 0.0.0.0:* LISTEN
Thats is ok for your remote connection.
You should also check your firewall (iptables if you centos/redhat)
services iptables stop
for testing or use :
iptables -A input -p tcp -i eth0 --dport 3306 -m state NEW,ESTABLISHED -j ACCEPT
iptables -A output -p tcp -i eth0 --sport 3306 -m state NEW,ESTABLISHED -j ACCEPT
And another thing to check your grant permission for remote connection :
GRANT ALL ON *.* TO remoteUser#'remoteIpadress' IDENTIFIED BY 'my_password';
errno 111 is ECONNREFUSED, I suppose something is wrong with the router's DNAT.
It is also possible that your ISP is filtering that port.
Check that your remote host (i.e. the web hosting server you're trying to connect FROM) allows OUTGOING traffic on port 3306.
I saw the (100) error in this situation. I could connect from my PC/Mac, but not from my website. The MySQL instance was accessible via the internet, but my hosting company wasn't allowing my website to connect to the database on port 3306.
Once I asked my hosting company to open my web hosting account up to outgoing traffic on port 3306, my website could connect to my remote database.
/etc/mysql$ sudo nano my.cnf
Relevant portion that works for me:
#skip-networking
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = MY_IP
MY_IP can be found using ifconfig or curl -L whatismyip.org |grep blue.
Restart mysql to ensure the new config is loaded:
/etc/mysql$ sudo service mysql restart
I had the same problem trying to connect to a remote mysql db.
I fixed it by opening the firewall on the db server to allow traffic through:
sudo ufw allow mysql
if the system you use is CentOS/RedHat, and rpm is the way you install MySQL, there is no my.cnf in /etc/ folder, you could use:
#whereis mysql
#cd /usr/share/mysql/
cp -f /usr/share/mysql/my-medium.cnf /etc/my.cnf
I have got a same question like you, I use wireshark to capture my sent TCP packets, I found when I use mysql bin to connect the remote host, it connects remote's 3307 port, that's my falut in /etc/mysql/my.cnf, 3307 is another project mysql port, but I change that config in my.cnf [client] part, when I use -P option to specify 3306 port, it's OK.
i set my bind-address correctly as above but forgot to restart the mysql server (or reboot) :) face palm - so that's the source of this error for me!
Sometimes when you have special characters in password you need to wrap it in '' characters, so to connect to db you could use:
mysql -uUSER -p'pa$$w0rd'
I had the same error and this solution solved it.
I had this same error and I didn't understand but I realized that my modem was using the same port as mysql. Well, I stop apache2.service by sudo systemctl stop apache2.service and restarted the xammp, sudo /opt/lampp/lampp start
Just maybe, if you were not using a password for mysql yet you had, 1045 (28000): Access denied for user 'root'#'localhost' (using password: YES), then you have to pass an empty string as the password
Not sure as cant see it in steps you mentioned.
Please try FLUSH PRIVILEGES [Reloads the privileges from the grant tables in the mysql database]:
flush privileges;
You need to execute it after GRANT
Hope this help!

Connect to remote mysql via terminal

For a test I set up user mysql user with % access. When I try to connect from a remote machine I get:
Enter password:
Then immediately get this:
ERROR 2003 (HY000): Can’t connect to MySQL server on ‘xxxxxxx’ (1)
Any ideas
Verify that you can connect to the mysql port with telnet from that remote machine, e.g.
telnet 192.168.1.52 3306
If that fails, there's a firewall somewhere preventing you to connect, or you're running mysql on a different port than the default(3306) or mysql isn't configured to listen on the interface/ip address (maybe it's just configured to listen on connections from localhost, check the bind-address configuration in the my.cnf config file)
Try to comment the bind-address = 127.0.0.1 in your /etc/mysql/my.cnf
# security:
# using "localhost" in connects uses sockets by default
# skip-networking
# bind-address = 127.0.0.1 --- commented
and watch the results. If not work try to use the IP address and if still not work. roll back the original file.
Can you telnet to the MySQL port 3306? If you can't then check to make sure the MySQL server service is listening on that port. Open a command prompt and type the following example.
Example: telnet yourmysqlservername.com 3306