I am in the process of moving from PHP 5.6 to PHP 7.
I have a virtual machine running PHP 5.6 (PHP5) with MySQL running on it. The code is mounted from my host.
I have a second virtual machine running PHP 7 (PHP7). The code is also mounted from my host. All of my projects are configured with "localhost" as the database host.
As the first step, I want to have the MySQL "localhost" on PHP7 go directly to the PHP5 MySQL instance.
I have setup an ssh tunnel such that port 3306 on PHP7 goes directly to 3306 on PHP5, but this doesn't seem to help (EDIT: although if I change the config in a project to have a 127.0.0.1:3306 host it does work, but the host change is what I'm wondering whether I can avoid :) ).
Is there a way to setup the forwarding so that the projects will just work (or not), or do I need to go through each project and update it to cope with both servers?
Related
I am creating an application with Laravel and Firebird 2.5 and wants to run it on a DigitalOcean server structure. We have 2 servers for the application, one for the web services (lets call it www) and one for the database services. I did a successful setup with Mysql and it works well but we all know Firebird is a rough one. So this is what we did so far:
Install a LEMP stack in www and Firebird 2.5 SuperServer. As I said these are digital ocean servers, both runs Ubuntu 14.04.
We created an SSH tunnel between the two server with the following structure:
ssh -L 9500:127.0.0.1:3050 username#db_server_ip_address (Private address)
But when we tried to hook up the application on www with the database server got the following error:
unavailable database
In the Laravel Configuration file used the following set up:
DB_HOST=127.0.0.1
DB_DATABASE=/home/username/database.gdb
DB_USERNAME=username
DB_PASSWORD=password
The credentials are correct, we can use it on the remote (db) server.
What do you think what could be the problem? Is it the SSH tunneling?
Warning: I don't use SSH that much, and have never used SSH tunneling, my answer is based on looking at documentation.
The ssh -L 9500:127.0.0.1:3050 does not do what you think it does:
Specifies that connections to the given TCP port or Unix socket on the local (client) host are to be forwarded to the given host and port, or Unix socket, on the remote side. This works by allocating a socket to listen to either a TCP port on the local side, optionally bound to the specified bind_address, or to a Unix socket. Whenever a connection is made to the local port or socket, the connection is forwarded over the secure channel, and a connection is made to either host port hostport, or the Unix socket remote_socket, from the remote machine.
(from ssh(1))
In other words, as far as I can tell the proper command would be:
ssh -L 9500:<ip-address of the Firebird server>:3050
The second problem seems to be that your Laravel config does not specify a port, so it is likely still trying to connect to port 3050 (the Firebird default port), instead of port 9500 that you configure. I don't know Laravel, but a property DB_PORT=9500 seems logical (but maybe these properties are specific to your own deployment, in which case you may need to do some more work).
I am new to working with servers, and am not able to use SQLYog because it is not able to connect to any server. When I try to use the default values to connect to MySQL (localhost, root, port 3306), I get "Error No. 2003: Can't connect to MySQL server on 'localhost' (0).
Is there something I am missing or that I have to correct? I am just trying to create a database.
SQLyog is just one way to connect to a MySQL database and interact with it. Other popular methods include MySQL Workbench, Navicat, phpMyAdmin, and others.
Before you can use any of these, you have to first make sure your MySQL server is running and accepting connections. You didn't mention (or tag) whether you are running MySQL on your local machine, or what operating system you are using.
A couple of the most common development environments are LAMP or WAMP, for "Linux, Apache, MySQL, php" or "Windows, Apache, MySQL, php" respectively. Since you tagged your question php, I'll assume one of these is appropriate. (For example you're using SQLyog on Windows but your MySQL server is on Linux.) (I'll presume Ubuntu for Linux examples.)
On the machine you've installed MySQL (along with any other components), you should be able to determine its running state by looking at your process list (ps aux in Ubuntu, tasklist or Task Manager (GUI) in Windows).
You're looking for mysqld (Linux) or mysqld.exe (Windows). If the process isn't running, you need to start it (Linux/Windows). If you're using WampServer (a popular Windows all-in-one package), for example, you can also look in your Windows Services for "wampmysqld" or "wampmysqld64" and start the service there.
If you can't get the process to start, you may have a configuration error. If the process is running, you may need to check the configuration any way to determine what port it is running on, if it's not the standard 3306.
The configuration file name and location can vary by system and package, but generally it will be called "my.cnf" (Linux) or "my.ini" (Windows). Check your documentation for help on the specific path.
Once you've got the service running, you should be able to connect!
This is the default SQLyog connection dialog (at least in my slightly older version). The defaults assume you are running your MySQL server on your local machine (localhost), that you have a user "root" with no password, and the default port 3306 is used.
You'll need to change any of this information that differs on your particular installation.
Be aware that if you're trying to connect to an instance of MySQL on another machine, a firewall may be blocking a port.
These steps should hopefully get you on the right track.
I am new to linux and I want to set up my network with one centralized MySQL server. I want my Web server to have Apache, PHP, and Wordpress installed with all MySQL references pointing to the database server.
I am having a hard time finding documentation on how to configure this. How do I set up a LAMP configuration across two servers with MySql as a stand alone dbms?
How do I congigure Apache, PHP and Wordpress in this setup?
If you wanna have your mysql on a remote server and let your local applications to connect to it , follow this steps :
run your mysql on your server (with a specific ip/computer name)
find my.conf in your mysql directory
edit my.conf and find the line : bind-address = 127.0.0.1
comment the line bind-address = 127.0.0.1 by adding # before it
restart your lamp by running this command /opt/lampp/lampp restart
in your local application set the mysql host from localhost to server ip or server name
DO NOT Forget before apply any changes create a backup from you my.conf, And grant all access to a user in your mysql on your server.
I'm running Apache 2.2 and MySQL Workbench, and using PHP to access the database.
The problem is, when I try to open the database I've made, MySQL Workbench can't seem to connect to the localhost at port 80, and the program stops responding.
How can I fix this?
Update: After some time of the program simply not responding, it gave me this error message:
"Unhandled exception: Lost connection to MySQL server at 'waiting for initial communication packet', system error 10060 (code 2013)"
A wamp installation has a lot of issues. Instead, you can run a Virtual Machine with ubuntu and run there LAMP. it is way more reliable than running wamp that is not supposed to be "equal" in terms of your production environment - that for sure is linux based OS. Also, keep in mind that programs such skype blocks the port 80 and 443. Search what programs are using the port for mysql... that's why I don't develop AMP apps under windows, but under linux.
I am experiencing a very slow ADO and mysqli connection for my production web server. The current software setup is windows 2008 server R2 Standard Edition SP1, Apache 2.4, PHP 5.3.10, MySql 5.5.24, Pear 1.94, Zend Engine version 2.30.
I've profiled the code using XDEBUG and it shows the initial connections taking around 1200ms each (regardless of page being visited), whereas on my local development machine and another test server the connections only takes around 8ms. The code for the website is all in sync through SVN except for the php, pear, mysql, and apache ini and conf files. I've done diffs on these to check for differences and there aren't any. The DB contents are a complete copy as well. Everything for the production server is hosted on the same machine so there aren't any firewall or internet issues.
The first connection profile has the following call stack:
ADOConnecton->Connect
ADODB_mysql->_connect
php::mysql_connect
The second one:
php::mysqli->mysqli
Any suggestions?
Usually the slowness in (first) connection depend on DNS resolution.
May be:
client to resolve the server name
server to resolve the client name to match an access rule
let the client/server let know the server/client address using the host file:
http://en.wikipedia.org/wiki/Hosts_(file)
I edited the Mysql my.ini to change the mysql service to only bind to the IPV4 loopback adapter.
[mysqld]
...
bind=127.0.0.1
I also changed the \public_html\conf\face.ini to use the IPV4 loopback address instead of local host. (Changed "localhost" to "127.0.0.1")
After that all issues went away. I'm not sure if it is because the machine has a half dozen IP addresses or its trying to decide whether to use IPV6 or IPV4.