I am working on the setup of my first unmanaged vps(ubuntu 20.4) and following the document to connect my django site to mysql server "https://www.digitalocean.com/community/tutorials/how-to-create-a-django-app-and-connect-it-to-a-database"
able to setup
python/django/virtualenv
mysql server - tested from mysql workbench on my local machine-Ok
apache2 working ok. able to see the welcome screen with sqlite3.
now moving to mysql. i tried both the way('ENGINE': 'django.db.backends.mysql' and option file '/etc/mysql/my.cnf' to connect to mysql server from django project.
None of the alternatives working. activated virtualenv, installed mysqldb using
a) sudo apt install libmysqlclient-dev default-libmysqlclient-dev
b) pip install wheel
c) pip install mysqlclient
while trying to migrate following error encountered. tried with all the option available on stakoverflow, i found none of them working.
Error:
"
(envFusion) worker#server:~/fusion/fusionerp$ python manage.py makemigrations
Traceback (most recent call last):
File "/home/worker/fusion/envFusion/lib/python3.8/site-packages/django/db/backends/mysql/base.py", line 15, in
import MySQLdb as Database
ModuleNotFoundError: No module named 'MySQLdb'
The above exception was the direct cause of the following exception:
.
.
File "/home/worker/fusion/envFusion/lib/python3.8/site-packages/django/db/backends/mysql/base.py", line 17, in
raise ImproperlyConfigured(
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module.
Did you install mysqlclient? "
with ubuntu 20.04 deafult python version is 3.8 and connecting to mysql with 3.8 is a bit challenge so you need to downgrade python to 3.6 or downgrade to ubuntu 18 if you are starting a fresh.
Found a tutorial to downgrade using alternatives and it worked. But had my other dependencies where i need python >= 3.7. So i had no other choice but refresh my ubuntu 20.04 on vps and configured with postgres. it is working way better than i expected with apache2/restframework/redis.
i suppose that i have a solution to this problem, so when we use a Ubuntu OS, i think that we need to run the next commands to work that package:
sudo apt-get install default-libmysqlclient-dev -y
sudo apt-get install gcc -y
pip3 install mysqlclient
Even if you already tried the first one, it might work. I have a Dockerfile in my GitHub of a Django app, if you want to test it later to see if it works on your machine, it took me a week to find the problem and deploy this app to Oracle Cloud because of this error.
Dockerfile
I'm trying to run my Laravel 5.7 app but will always get the error Could not find driver when trying to run a query in my page.
Here's portion of my .env code:
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
Anyway instead of using mysql, we use MariaDB instead. I can confirm that mariadb is running without any problem because if I run mysql -u root -p in my terminal, I can connect to my MariaDB. Here's what my welcome message will be upon successfully log into my MariaDB.
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 44
Server version: 10.2.8-MariaDB MariaDB Server
Running phpinfo() will return this:
PDO support enabled
PDO drivers pgsql, sqlite
MySQL driver for PDO George Schlossnagle, Wez Furlong, Ilia Alshanetsky, Johannes Schlueter
MySQLi Zak Greant, Georg Richter, Andrey Hristov, Ulf Wendel
MySQLnd Andrey Hristov, Ulf Wendel, Georg Richter, Johannes Schlüter
But I can confirm my /opt/rh/rh-php71/root/usr/lib64/php/modules folder contains pdo_mysql.so, pdo.so,mysqli.so and mysqlnd.so
And also my /etc/opt/rh/rh-php71/php.d folder contains 30-pdo_mysql.ini on which it contains just one line, extension=pdo_mysql.so
So why isn't my pdo mysql running?
It turns out I need to restart my php-fpm. Upon googling and googling, I still can't find the exact name of my php-fpm service, so I did sudo find | grep fpm and found out that my php-fpm service name is rh-php71-php-fpm
So I run sudo service rh-php71-php-fpm restart and sudo systemctl restart httpd and now mysql is listed under PDO drivers, and I can run my apps successfully.
Seriously, why did different versions of Linux have different names of the same thing?
You can install php mysql connection package from yum
At first install #yum install epel-release -y then
yum install php-mysqlnd -y
I have just installed Debian Lenny with Apache, MySQL, and PHP and I am receiving a PDOException could not find driver.
This is the specific line of code it is referring to:
$dbh = new PDO('mysql:host=' . DB_HOST . ';dbname=' . DB_NAME, DB_USER, DB_PASS)
DB_HOST, DB_NAME, DB_USER, and DB_PASS are constants that I have defined. It works fine on the production server (and on my previous Ubuntu Server setup).
Is this something to do with my PHP installation?
Searching the internet has not helped, all I get is experts-exchange and examples, but no solutions.
You need to have a module called pdo_mysql. Looking for following in phpinfo(),
pdo_mysql
PDO Driver for MySQL, client library version => 5.1.44
The dsn in your code reveals you are trying to connect with the mysql driver. Your error message indicates that this driver is unavailable.
Check that you have the mysql extension installed on your server.
In Ubuntu/Debian you check for the package with:
dpkg --get-selections | grep php | grep mysql
Install the php5-mysql package if you do not have it.
In Ubuntu/Debian you can use:
PHP5: sudo apt-get install php5-mysql
PHP7: sudo apt-get install php7.0-mysql
Lastly, to get it working, you will need to restart your web-server:
Apache: sudo /etc/init.d/apache2 restart
Nginx: sudo /etc/init.d/nginx restart
Update: newer versions should use php-sqlite3 package instead of php5-sqlite. So use this, if you are using a recent ubuntu version:
sudo apt-get install sqlite php-sqlite3
Original answer to question is here:
sudo apt-get install sqlite php5-sqlite
sudo /etc/init.d/apache2 restart
If your phpinfo() is not showing the pdo_sqlite line (in my case, on my Ubuntu Server), you just need to run the lines above and then you'll be good to go.
For newer versions of Ubuntu that have PHP 7.0 you can get the php-mysql package:
sudo apt-get install php-mysql
Then restart your server:
sudo service apache2 restart
I had the same issue. The solution depends on OS. In my case, i have debian, so to solve it:
Updated my php version from (php5 to php7)
Install php-mysql and php7.0-mysql
apt-get install php-mysql
apt-get install php7.0-mysql
I edited my php.ini locate at /etc/php/7.0/apache2/php.ini
uncomment the line : extension=php_pdo_mysql.dll
Then restart apache:
service apache2 restart
This solves my problem
On my Windows machine, I had to give the absolute path to the extension dir in my php.ini:
extension_dir = "c:\php5\ext"
Check if the module is available with php -m | grep pdo_mysql.
If not, for PHP 7.2, you can install relevant package with sudo apt install php7.2-mysql.
Use similar command on other PHP versions and package managers.
On Ubuntu just execute
sudo apt-get install php5-mysql
sudo apt-get install php-mysql
worked well on ubuntu and php 7
When adding these into your php.ini ensure the php_pdo.dll reference is first before the db drivers dlls otherwise this will also cause this error message too. Add them like this:
[PHP_PDO]
extension=php_pdo.dll
[PHP_PDO_MYSQL]
extension=php_pdo_mysql.dll
for Windows 8.1/10 in :\\php.ini file you should uncomment line "extension=pdo_mysql"
Did you check your php.ini (check for the correct location with phpinfo()) if MySQL and the driver is installed correctly?
For PHP 5.5 on CentOS I fixed this by installing the php55-mysqlnd package.
sudo yum -y install php55w-mysqlnd # For Webtatic
sudo yum -y install php55u-mysqlnd # For Remi
For help installing, write a comment as it depends on the way PHP is installed on your system. Available repo's are webtatic and remi.
Check if extension_dir in php configuration file set correctly. Try to comment/uncomment some extensions and see if it's reflected on phpinfo().
If it doesn't then either php config file cannot be loaded (wrong location) extension_dir is commented or set to the wrong location.
In my case my DSN string was incorrect, specifically it did not contain mysql://. I would have expected a different error message, perhaps something like 'DSN string does not specify driver/protocol.'
Adding mysql:// to the beginning of the DSN string resolved the issue.
I had the same problem during running tests with separate php.ini. I had to add these lines to my own php.ini file:
[PHP]
extension = mysqlnd.so
extension = pdo.so
extension = pdo_mysql.so
Notice: Exactly in this order
I spent the last day trying to figure out why I was getting the following error. I am running Ubuntu 14.04.
The Problem:
I noticed that my PHP-CLI version was running php7.0 but php_info() (the web version) was displaying php 5.5.9. Even though php_info() said pdo was enabled, using the command line (CLI) wasn't recognizing the pdo_mysql command. It turns out that mysql was enabled for my old version but not the CLI version. All I did was install mysql for php7.0 and it was able to work.
This is what worked:
To check the version:
php -v
To install mysql for php7.0
sudo apt-get install php7.0-mysql
1) make sure your CLI version is the same as your web version
2) If they are different, make sure your CLI version has the mysql plug-in since it doesn't come with it as a default.
Incorrect installation of PHP was being called
I was experiencing the same problem. And I hope this would help someone who is having a similar issue as me.
Scenario
OS = Windows 10
Platform = XAMPP
PHP Version = 7 (Multiple Version seem to have been installed in the PC)
I created phpinfo.php file in the public folder and run the phpinfo() to look for the location of my php.ini file.
PHP.ini Location = c:\xampp\php\php.ini
Problem
Calling c:\xampp\htdocs> php -v returned PHP 7.2.3 but phpinfo.php showed PHP 7.2.2.
Solution
Instead of calling
php artisan migrate:install
which gave me this error, I used
c:\xampp\php\php artisan migrate:install
and it worked.
The problem is a missing php to mysql library. In CentOs i fixed it by running
# yum install php-mysql and then restarting apache with # /bin/systemctl restart httpd.service Note that the naming is slightly different from debian/ubuntu based distros, php->php5 and httpd->apache2.
I extremely recommend mysqllnd instead of mysql because of you would have a lot of problems like number converting and bit type evaluates problem with mysql extension.
on ubuntu install mysqllnd with following command:
sudo apt-get install php5-mysqlnd
In my case, I was using PDO with php-cli, and it worked fine.
Only when I tried to connect from apache, I got the "missing driver" issue, which I didn't quite understand.
A simple apt-get install php-mysql solved it. (Ubuntu 16.04 / PHP7. credits go to the selected answer & Ivan's comment)
Hope it can help.
PHP Fatal error: Uncaught PDOException: could not find driver
I struggled and struggled with "apt install php-mysql php7toInfinity and don't forget sqlite-what-ever's" and just could not get rid of this error message until I went back to basics and reset the file-permissions on the web-site in question.
These 3 commands reset file and folder permissions on the web-site and got it to work again.
cd /var/www/web-site-name.com/web/
# find (sub) directories and change permissions
find . -type d -exec chmod 755 {} \;
# find files and change permissions
find . -type f -exec chmod 664 '{}' \;
I Fixed this issue on my Debian 6.
Normally I just had installed php5-common package. After installation, you have to restart your web server (apache or nginx depending on which one you installed).
Then I just do an lsof on the apache process id (lsof -p process_id) as followed :
sudo lsof -p 1399 #replace 1399 by your apache process id
apache2 1399 root mem REG 254,2 80352 227236 /usr/lib/php5/20090626/xmlrpc.so
apache2 1399 root mem REG 254,2 166496 227235 /usr/lib/php5/20090626/suhosin.so
apache2 1399 root mem REG 254,2 31120 227233 /usr/lib/php5/20090626/pdo_mysql.so
apache2 1399 root mem REG 254,2 100776 227216 /usr/lib/php5/20090626/pdo.so
apache2 1399 root mem REG 254,2 135864 227232 /usr/lib/php5/20090626/mysqli.so
As you can see above, the modules are installed on a file path not known or guided by common library path: /usr/lib/php5/20090626/. For your installation, it may be different, but only the path of pdo_mysql.so, pdo.so, mysqli.so. So, this is why Drupal or any other php engine couldn't find the library and shows that error: PDOException: could not find driver
I just don't know why it is installed on such a weird path, for me it's just a bug in the library package installation script in debian 6.
I solved the issue by creating a symbolic for all the files under /usr/lib/php5/20090626/ to
/usr/lib/php5/ with this command :
ln -s /usr/lib/php5/20090626/* /usr/lib/php5/
$DB_TYPE = 'mysql'; //Type of database<br>
$DB_HOST = 'localhost'; //Host name<br>
$DB_USER = 'root'; //Host Username<br>
$DB_PASS = ''; //Host Password<br>
$DB_NAME = 'database_name'; //Database name<br><br>
$dbh = new PDO("$DB_TYPE:host=$DB_HOST; dbname=$DB_NAME;", $DB_USER, $DB_PASS); // PDO Connection
This worked for me.
I faced the same issue after I removed the php5 package (that includes all the drivers as well) in order to install php7 package. I actually installed php7 package without a mysql module.
I managed to solve it by typing in the terminal:
1) $ apt-cache search php7
which lists all the modules, looking through the modules I found,
php7.0-mysql - MySQL module for PHP
2) $ sudo apt-get install php7.0-mysql
That's it. It worked for me in my linux system.
(use the appropriate php version, yours could be php5)
Just one other thing to confirm as some people are copy/pasting example code from the Internet to get started. Make sure you have MySQL entered here:
... $dbh = new PDO ("mysql: ...
In some examples this shows
$dbh = new PDO ("dblib ...
For those using Symfony2/3 and wondering why you're getting this error. If you're using "mapping_types", you might encounter this error. The reason is that "mapping_types" is placed at the wrong level. For instance :
doctrine:
dbal:
mapping_types:
set: string
This "mapping_types" must be placed at this level :
doctrine:
dbal:
#To counter the error caused by 'mapping_types'
connections:
default:
server_version: %database_server_version%
mapping_types:
set: string
I hope this helps
I found the solution here : https://github.com/doctrine/DoctrineBundle/issues/327
Everywhere I go I read that the path of extension_dir should be changed from ext to an absolute path. It worked for me. However, when trying to build a server of my colleague's PC, I had to let the value to ext instead of putting an absolute path.
If you did put an absolute path and it does the extension is still not found, considerer trying both with the absolute path and ext.
Check correct path in extension_dir in you phpinfo().
Had the same issue, because I forgot to go into my virtual machine. If I go to my local directory like this:
cd /www/homestead/my_project
php artisan migrate
that error will appear. But it works on my virtual machine
cd ~/homestead
vagrant ssh
cd /www/homestead/my_project
php artisan migrate
I'm trying to use Rails with the MySQL bin from Ampps, but when I run the command rails generate scaffold User name:string email:string I get the following error:
dyld: lazy symbol binding failed: Symbol not found: _mysql_server_init
Referenced from: /Users/myusername/.rvm/gems/ruby-2.2.1/gems/mysql2-0.4.2/lib/mysql2/mysql2.bundle
Expected in: flat namespace
dyld: Symbol not found: _mysql_server_init
Referenced from: /Users/myusername/.rvm/gems/ruby-2.2.1/gems/mysql2-0.4.2/lib/mysql2/mysql2.bundle
Expected in: flat namespace
I have already configured Ampps Mysql with my environment but I can not managed to make it work with rails, I have the following configurations.
$ which mysql
/Applications/AMPPS/mysql/bin/mysql
$ echo $PATH
/Users/myusername/.rvm/gems/ruby-2.2.1/bin:/Users/myusername/.rvm/gems/ruby-2.2.1#global/bin:/Users/myusername/.rvm/rubies/ruby-2.2.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/myusername/.rvm/gems/ruby-2.2.1/bin:/Users/myusername/.rvm/gems/ruby-2.2.1#global/bin:/Users/myusername/.rvm/rubies/ruby-2.2.1/bin:/Applications/AMPPS/php-5.4/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/myusername/.rvm/bin:/Users/myusername/.rvm/bin:/Applications/AMPPS/mysql/bin
$ ls -l /usr/local/lib/libmy*.dylib
lrwxr-xr-x 1 myusername admin 53 Jan 1 19:30 /usr/local/lib/libmysqlclient.18.dylib -> /Applications/AMPPS/mysql/lib/libmysqlclient.18.dylib
I have tried doing commands but with no success:
$ gem install mysql2 -- --with-mysql-lib=/Applications/AMPPS/mysql/lib --with-mysql-include=/Applications/AMPPS/mysql/include --with-mysql-config=/Applications/AMPPS/mysql/bin/mysql_config
And
bundle config build.mysql2 --with-mysql-lib=/Applications/AMPPS/mysql/lib --with-mysql-include=/Applications/AMPPS/mysql/include --with-mysql-config=/Applications/AMPPS/mysql/bin/mysql_config
bundle install
Any ideas?
I downloaded this AMPPS package and did a quick check on the MySQL binary:
$ file /Volumes/AMPPS/AMPPS/mysql/bin/mysql
/Volumes/AMPPS/AMPPS/mysql/bin/mysql: Mach-O executable i386
Your 64-bit Ruby install is trying to link to 32-bit MySQL libraries, and is not finding what it's looking for. "Symbol not found" errors are often an indication of an architecture mismatch.
My advice to you would be to install these programs from a package management system such as MacPorts or Homebrew. I'm partial to MacPorts, so I'll give you instructions for that. I get the impression Homebrew is more popular, but haven't used it myself.
Install Xcode and the Xcode Command Line Tools
Agree to Xcode license in Terminal: sudo xcodebuild -license
Install MacPorts: https://distfiles.macports.org/MacPorts/MacPorts-2.3.4-10.11-ElCapitan.pkg
Update the port list: sudo port selfupdate
Install away: sudo port install mysql56 rb-rails rb-mysql
Update regularly: sudo port selfupdate && sudo port -uc upgrade outdated
This way you're getting properly built binaries for your system, you can easily keep them up to date, and you aren't filling your system up with 2 gigabytes of things you aren't necessarily going to use (5 different versions of PHP, a couple of database servers, Perl, Python, etc.) In addition, you also get up-to-date versions of other utilities like Ruby, rather than relying on the outdated version that ships with the operating system.