I'm tring to make a docker with mysql and apache php.
I want to easly connect the mysql inside my php code without having to search the current ip of the mysql container.
How i could link the mysql ip adress in my php-apache container?
My docker-compose file:
version: "3.2"
services:
apache:
build:
context: './docker/apache/'
links:
- mysql:mysqldb
depends_on:
- mysql
ports:
- "80:80"
volumes:
- ./:/var/www/html/
- ./docker/apache/virtualhost.conf:/etc/apache2/sites-enabled/000-default.conf
- ./docker/apache/php.ini:/usr/local/etc/php/php.ini
container_name: apache
mysql:
image: mysql/mysql-server:8.0
command: ['--character-set-server=utf8mb4', '--collation-server=utf8mb4_unicode_ci','--default-authentication-plugin=mysql_native_password']
restart: always
ports:
- "18906:3306"
# volumes:
# - ./docker/mysql-dump:/docker-entrypoint-initdb.d
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: dbtest
MYSQL_USER: root
MYSQL_PASSWORD: root
MYSQL_ROOT_HOST: '%'
container_name: mysql
My php script:
$conn = mysqli_connect(
'172.10.0.2', // i want this to change acording to the mysql container
$user,
$pass,
$database
);
If you need something else please let me know.
Try this:
$conn = mysqli_connect(
'mysql', // here goes your mysql container name
$user,
$pass,
$database
);
Related
I have recently installed docker-compose on Ubuntu. I can connect to my local host, phpmyadmin and stuff. However, when I try to connect to it with mysqli_connect, I can reach the server but I cannot access it with Warning: mysqli_connect(): (HY000/2002).
Here is the php code I am using to try to connect:
// username and password belong to the phpmyadmin, before that I tried docker for both username and pwd.
Edit: staj is the name of database i created in phpmyadmin.
<?php
$dbHost="127.0.0.1";
$dbUser="root";
$dbPass="root";
$dbName="staj";
$conn=mysqli_connect($dbHost, $dbUser, $dbPass, $dbName);
if ($conn){
}else{
die("Connection Failed!");
}
?>
And here is my docker-compose.yml:
version: "3"
services:
webserver:
build:
context: ./bin/${PHPVERSION}
container_name: '${COMPOSE_PROJECT_NAME}-${PHPVERSION}'
restart: 'always'
ports:
- "${HOST_MACHINE_UNSECURE_HOST_PORT}:80"
- "${HOST_MACHINE_SECURE_HOST_PORT}:443"
links:
- database
volumes:
- ${DOCUMENT_ROOT-./www}:/var/www/html
- ${PHP_INI-./config/php/php.ini}:/usr/local/etc/php/php.ini
- ${VHOSTS_DIR-./config/vhosts}:/etc/apache2/sites-enabled
- ${LOG_DIR-./logs/apache2}:/var/log/apache2
environment:
APACHE_DOCUMENT_ROOT: ${APACHE_DOCUMENT_ROOT-/var/www/html}
PMA_PORT: ${HOST_MACHINE_PMA_PORT}
MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
database:
build:
context: "./bin/${DATABASE}"
container_name: '${COMPOSE_PROJECT_NAME}-${DATABASE}'
restart: 'always'
ports:
- "127.0.0.1:${HOST_MACHINE_MYSQL_PORT}:3306"
volumes:
- ${MYSQL_INITDB_DIR-./config/initdb}:/docker-entrypoint-initdb.d
- ${MYSQL_DATA_DIR-./data/mysql}:/var/lib/mysql
- ${MYSQL_LOG_DIR-./logs/mysql}:/var/log/mysql
environment:
MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
MYSQL_DATABASE: ${MYSQL_DATABASE}
MYSQL_USER: ${MYSQL_USER}
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: '${COMPOSE_PROJECT_NAME}-phpmyadmin'
links:
- database
environment:
PMA_HOST: database
PMA_PORT: 3306
PMA_USER: root
PMA_PASSWORD: ${MYSQL_ROOT_PASSWORD}
MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
MYSQL_USER: ${MYSQL_USER}
MYSQL_PASSWORD: ${MYSQL_PASSWORD}
UPLOAD_LIMIT: ${UPLOAD_LIMIT}
MEMORY_LIMIT: ${MEMORY_LIMIT}
ports:
- '${HOST_MACHINE_PMA_PORT}:80'
volumes:
- /sessions
- ${PHP_INI-./config/php/php.ini}:/usr/local/etc/php/conf.d/php-phpmyadmin.ini
redis:
container_name: '${COMPOSE_PROJECT_NAME}-redis'
image: redis:latest
ports:
- "127.0.0.1:${HOST_MACHINE_REDIS_PORT}:6379"
Solution:
$dbHost="database";
$dbUser="docker";
$dbPass="docker";
$dbName="docker";
It turns out that docker for username and pwd was correct but the host name was incorrect.
I got that "docker" from the .env.
Seems you've already found the way to connect, but here's why it works that way:
You're using distinct docker containers for each service, which is correct, but that means your application isn't trying to connect locally (127.0.0.1) because the database isn't running on the same container.
Docker Compose networking allows hosts defined in the same docker-compose file to communicate with each other by using the host names which are defined as the service name (the next level under service), so in your case you have hosts webserver, database, phpmyadmin, and redis.
Simply updating the host name you're trying to connect to from 127.0.0.1 to database should be all you need to do.
So I have the following docker-compose file and Dockerfile for php which I am using. These files are in a folder called cca4 and my php files are in a subdirectory of this called src. I am trying to access my mysql database that I am creating however I cannot select anything from it or insert anything. No matter what I do the queries will not work. Any idea on what is wrong? When I go into phpmyadmin I can see that my database is there however it is just not updating or being selected from. I am using nginx as the web server and php-fpm to communicate. I am doing this all from a Linux VM on GCP (Google Cloud Platform) so could be an issue with that maybe too. My php just cannot seem to pick up that there are any tables in the db or rows even after inserting them into phpmyadmin
version: '3.3'
services:
db:
image: mysql:latest
volumes:
- database:/var/lib/mysql
restart: always
environment:
MYSQL_ROOT_PASSWORD: MyDBRoot123
MYSQL_DATABASE: assignment_four_data
MYSQL_USER: php
MYSQL_PASSWORD: php
container_name: db
networks:
- mynet
myphp:
build:
context: .
dockerfile: Dockerfile
depends_on:
- db
expose:
- 9000
restart: always
volumes:
- $PWD/src:/var/www/html
container_name: myphp
networks:
- mynet
mynginx:
depends_on:
- myphp
image: nginx:latest
ports:
- "8080:80"
restart: always
volumes:
- $PWD/src:/var/www/html
- $PWD/src/nginx.ini:/etc/nginx/conf.d/default.conf
container_name: mynginx
networks:
- mynet
phpMyAdmin:
depends_on:
- db
image: phpmyadmin:latest
restart: always
environment:
PMA_HOST: mysql
ports:
- "8082:80"
container_name: phpMyAdmin
networks:
- mynet
volumes:
database: {}
networks:
mynet:
driver: bridge
Here is the dockerfile.
FROM php:7.4-fpm
RUN pecl install igbinary \
&& pecl install redis \
&& docker-php-ext-install mysqli \
&& docker-php-ext-enable redis \
&& echo "extension=redis.so" > /usr/local/etc/php/conf.d/redis.ini
my php code.
<?php
$servername = "db";
$username = "php";
$password = "php";
$databse = "assignment_four_data";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $database);
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
$sql = 'SELECT * FROM Users';
$result = $mysqli_query($conn, $sql);
if (!$result) {
printf("false");
}
printf("Selected returned %d rows. \n", mysqli_num_rows($result));
?>
The error I keep receiving in my db.php file
Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, bool given in /var/www/html/db.php on line 18
Selected returned 0 rows
Is this a docker problem or a mysqli problem? My database is definitely there in phpmyadmin but I just can't get my db.php to communicate with it. Since the mysqli_query is returning false then my query obviously isn't able to work correctly with the mysql database. Even after creating tables and inserting values in phpmyadmin it still cannot detect anything.
I am trying to connect two running containers: (1) a webapp and (2) a mysql db using docker compose. I setup the belowmentioned docker-compose.yml but my webapp fails to open a socket to mysql. More specifically, this php #fsockopen function throws an error ( second case ). Is there something wrong with the docker-compose config?
Note: idoit is the name of the webapp
php case
if (#fsockopen($l_dbHost, $l_t, $t_errno, $t_errstr, 5)) {
$l_success = true;
$l_message = "CONNECTED";
$l_dbPort = $l_t;
} else {
$l_success = false;
$l_message = "ERROR (" . $t_errno . ")";
}
The docker-compose.yml
version: "3"
services:
db:
image: mysql:5.7
restart: always
environment:
MYSQL_ROOT_PASSWORD: ****
MYSQL_DATABASE: ****
MYSQL_USER: ****
MYSQL_PASSWORD: ****
ports:
- '3306:3306'
expose:
- '3306'
volumes:
- db_data:/var/lib/mysql
idoit:
depends_on:
- db
build:
context: .
dockerfile: Dockerfile
ports:
- "8000:80"
restart: always
environment:
IDOIT_DB_HOST: db:3306
IDOIT_DB_USER: ****
IDOIT_DB_PASSWORD: ****
IDOIT_DB_NAME: ****
volumes:
db_data: {}
seems like idoit service doesn't have access to network with mysql database.
db service have
networks:
- backend
and idoit service - doesn't
I've seen several other posts with this issue. One in particular is this:
Docker MYSQL '[2002] Connection refused'
I tried to add PMA_HOST: mysql as instructed in the previous question.
Here is my docker-compose.yml file looks like:
version: "3.7"
services:
www:
build: .
ports:
- "8001:80"
volumes:
- ./www:/var/www/html/
links:
- db
networks:
- default
db:
image: mysql:8.0
ports:
- "3306:3306"
environment:
MYSQL_DATABASE: myDb
MYSQL_USER: user
MYSQL_PASSWORD: test
MYSQL_ROOT_PASSWORD: test
volumes:
- ./dump:/docker-entrypoint-initdb.d
networks:
- default
phpmyadmin:
image: phpmyadmin/phpmyadmin
links:
- db:db
ports:
- 8000:80
environment:
MYSQL_USER: user
MYSQL_PASSWORD: test
MYSQL_ROOT_PASSWORD: test
volumes:
persistent:
My dockerfile:
FROM php:7.0.30-apache
RUN docker-php-ext-install pdo pdo_mysql
Using the above, when trying to connect to the database, I get the error:
Conneciton failed: SQLSTATE[HY000] [2002] Connection refused
As stated, from the previously asked question, I updated the yml file to include PMA_HOST: mysql under the environment section of the phpmyadmin service. Problem is, when I do that, I can no longer log into the phpmyadmin.
Does anyone see what I am doing wrong and now I can fix it?
*** EDIT ***
Here is my database connection file:
<?php
$host = '127.0.0.1';
$dbname = 'myDb';
define ('DB_USER', 'user');
define ('DB_PASSWORD', 'test');
try
{
$dbc = new PDO("mysql:dbname=$dbname;host=$host", DB_USER, DB_PASSWORD);
$dbc->SetAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch (PDOException $e) {
echo "Connection failed: " . $e->getMessage() . "<br/>";
}
?>
Currently, you are trying to use 127.0.0.1 rather than actually setting the host as the service of the docker container you are running for db, to fix this you should change the files to something like so:
docker-compose.yml
version: "3.7"
services:
www:
build: .
ports:
- "8001:80"
volumes:
- www:/var/www/html/
db:
image: mysql:8.0 # also recommend using mariadb over the MySQL image.
ports:
- "3306:3306"
environment:
MYSQL_DATABASE: myDb
MYSQL_USER: user
MYSQL_PASSWORD: test
MYSQL_ROOT_PASSWORD: test
volumes:
- mysql-data:/docker-entrypoint-initdb.d
phpmyadmin:
image: phpmyadmin/phpmyadmin
ports:
- 8000:80
environment:
MYSQL_USER: user
MYSQL_PASSWORD: test
MYSQL_ROOT_PASSWORD: test
volumes:
mysql-data:
phpmyadmin:
database connection file:
<?php
$host = 'db';
$dbname = 'myDb';
define ('DB_USER', 'user');
define ('DB_PASSWORD', 'test');
try
{
$dbc = new PDO("mysql:dbname=$dbname;host=$host", DB_USER, DB_PASSWORD);
$dbc->SetAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch (PDOException $e) {
echo "Connection failed: " . $e->getMessage() . "<br/>";
}
?>
this will allow you to use the service to autofill the host, it also then defined the volumes. but this should work and fix the connection refusal as it will find the host address and values now.
They are newbie to docker.
Get phpmyadmin, php, home assistant working. But I can't configure the docker well to be able to connect from php to a database. Could you help me see what the problem is.
I tried everything. I read many posts with the same error but could not get it to work.
Thank you very much
This is my modified docker-compose
version: '3.4'
services:
web:
build:
context: ./php
dockerfile: Dockerfile
container_name: php73
depends_on:
- db
volumes:
- ./php:/var/www/html/
environment:
MYSQL_HOST: mysql8
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_DB: ha
ports:
- 3001:80
db:
container_name: mysql8
image: mysql:8.0
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: 123456
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_DATABASE: ha
volumes:
- /var/lib/mysql
ports:
- 6033:3306
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin
depends_on:
- db
restart: always
ports:
- 8080:80
environment:
PMA_ARBITRARY: 1
PMA_HOST: db
PMA_PORT: 3306
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_ROOT_PASSWORD: 123456
volumes:
- /sessions
The new php example
<?php
$host = 'db';
$user = 'pf';
$password = '123456';
$db = 'ha';
$conn = new mysqli($host,$user,$password,$db,3306);
if($conn->connect_error) {
echo 'connection failed' . $conn->connect_error;
}
echo 'Sucessfully connected msql';
?>
The Dockerfile
FROM php:7.3.3-apache
RUN apt-get update && apt-get upgrade -y
RUN docker-php-ext-install mysqli
EXPOSE 80
My docker-compose
version: '3.3'
services:
web:
build:
context: ./php
dockerfile: Dockerfile
container_name: php73
depends_on:
- db
volumes:
- ./php:/var/www/html/
ports:
- 80:80
db:
container_name: mysql8
image: mysql:8.0
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: mediciones
MYSQL_USER: root
MYSQL_PASSWWORD: root
ports:
- 6033:3306
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin
depends_on:
- db
restart: always
ports:
- 8080:80
environment:
PMA_ARBITRARY: 1
PMA_HOST: db
MYSQL_ROOT_PASSWORT: root
homeassistant:
container_name: homeassistant
restart: unless-stopped
image: homeassistant/home-assistant
devices:
- /dev/ttyUSB0:/dev/ttyUSB0
- /dev/ttyUSB1:/dev/ttyUSB1
- /dev/ttyACM0:/dev/ttyACM0
volumes:
- ${USERDIR}/docker/homeassistant:/config
- /etc/localtime:/etc/localtime:ro
- ${USERDIR}/docker/shared:/shared
- /dev/serial/by-id/:/dev/serial/by-id/
network_mode: host
privileged: true
My php example
<?php
$host = '127.0.0.1';
$user = 'root';
$password = 'root';
$db = 'ha';
$conn = new mysqli($host,$user,$password,$db);
if($conn->connect_error) {
echo 'connection failed' . $conn->connect_error;
}
echo 'Sucessfully connected msql';
?>
Assuming its your example code running in the php container:
In which case use db as the hostname and mediciones as the database name in the connection.
For the db container:
MYSQL_USER set to non-root as this will cause potential errors. This user is already given access on the MYSQL_DATABASE.
use a persistent volume for /var/lib/mysql
(optionally), if your home assistant or php doesn't create the tables, you can use [mysql "Initializing a fresh instance"]https://hub.docker.com/_/mysql) to initialize some tables.
You are exposing mysql on host port: 6033
Did you try:
$conn = new mysqli($host,$user,$password,$db,6033);