Question

HAproxy mysql - what is username and password for php app

Hi,

I followed the tutorials here: https://www.digitalocean.com/community/tutorials/how-to-use-haproxy-to-set-up-mysql-load-balancing--3

and successfully create HAproxy for a Master-Master Mysql

However, I am not able to find any correct way to connect a php app to the database through HAProxy

I tried netstat -tlpn | grep 3306 and got the following result:

tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      946/haproxy

however, when trying mysql -h <IP of HAProxy Droplet> -u root -p I could not connect because of incorrect password. My passwords are exactly as the ones in the tutorials and I have tried all of them but it doesn’t work.

Any help is really appreciated. Thank you in advanced


Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

If you followed that tutorial, there are a few things to note:

  • The MySQL user set up is named haproxy_root not root as used in this question. So the password for the root user is the one from when you initially installed MySQL, not the user set up in the article.
  • It is only accessible via localhost on the HAproxy instance.

If you need to connect to the database from another host, you’ll need to change the bind address in your HAProxy configuration. To bind to all network interfaces, it should look like:

/etc/haproxy/haproxy.cfg
listen mysql-cluster
    bind :3306