On a current project I use Docker. I must clarify that I am pretty inexperienced at it.
My project is a PHP/Symfony project. Until then, I used nginx:alpine and phpdocker/php-fpm to have my project running on my dev environment. However, I found these unfit to my case as my production actually uses Apache.
I found another project I'm on uses the webdevops Docker images without trouble. I want to replace the two containers listed above with a single one, the webdevops/php-apache-dev:alpine docker image.
Although the configuration between the two projects seems almost identical, my dev environment does not seem to work properly: I end up with this:
This site can’t be reached - 172.18.0.7 refused to connect.
(I also use Traefik, but the routed URI does not work any better. The error message is slightly different though: Bad Gateway).
I find myself unable to debug this. I don't even know where to look.
Below is the docker-compose.yml configuration I want to use:
version: '3.2'
services:
app:
image: webdevops/php-apache-dev:alpine
container_name: my-app
working_dir: /app
env_file: .env
environment:
WEB_DOCUMENT_ROOT: /public
WEB_DOCUMENT_INDEX: index.php
LOG_STDOUT: ./var/log/app.stdout.log
LOG_STDERR: ./var/log/app.stderr.log
# @todo list of unwanted PHP modules, cf. https://dockerfile.readthedocs.io/en/latest/content/DockerImages/dockerfiles/php-apache-dev.html#php-modules
# PHP_DISMOD:
php.error_reporting: E_ALL
PHP_DISPLAY_ERRORS: 1
PHP_POST_MAX_SIZE: 80M
PHP_UPLOAD_MAX_FILESIZE: 200M
PHP_MEMORY_LIMIT: 521M
PHP_MAX_EXECUTION_TIME: 300
PHP_DATE_TIMEZONE: Europe/Paris
volumes:
- .:/app
# - ./docker/apache2/conf.d:/opt/docker/etc/httpd/conf.d
- ~/.ssh:/home/application/.ssh:ro
- ~/.composer:/home/application/.composer
depends_on:
- elasticsearch
- database
The other containers work just as well as they did before. This one is the only one that fails.
When calling docker-compose up no error is thrown. All the logs I could find within the container remain silent. As far I as can tell, Traefik does not seem to be the problem. Here is the result of docker ps:
[/var/www/html/citizen-game]$ docker ps *[master]
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6e9639e7a84d webdevops/php-apache-dev:alpine "/entrypoint supervi…" 4 hours ago Up 4 hours 80/tcp, 443/tcp, 9000/tcp my-app-app
be1b90fdf768 docker.elastic.co/elasticsearch/elasticsearch:6.2.4 "/usr/local/bin/dock…" 4 hours ago Up 4 hours (healthy) 9200/tcp, 9300/tcp my-app-elasticsearch
76fb8743a12f phpmyadmin/phpmyadmin "/run.sh supervisord…" 4 hours ago Up 4 hours 80/tcp, 9000/tcp my-app-phpmyadmin
dd41b4afe267 mysql:5.7 "docker-entrypoint.s…" 4 hours ago Up 4 hours (healthy) 3306/tcp, 33060/tcp my-app-database
91893783bcb1 rabbitmq:3.7-management "docker-entrypoint.s…" 4 hours ago Up 4 hours 4369/tcp, 5671/tcp, 0.0.0.0:5672->5672/tcp, 15671/tcp, 25672/tcp, 0.0.0.0:15672->15672/tcp my-app-rabbitmq
63f551884bbf traefik:maroilles "/traefik --web --do…" 4 hours ago Up 4 hours 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 0.0.0.0:8080->8080/tcp
My question is, I guess: how can I debug this? Am I missing something trivial?
Edit
Here is (part of) the content of the docker-compose.override.yml file:
version: '3.2'
services:
app:
volumes:
- ~/.ssh:/home/application/.ssh
- ~/.composer:/home/application/.composer
labels:
- "traefik.backend=my-app"
- "traefik.frontend.rule=Host:my-app.docker"
- "traefik.docker.network=proxy"
networks:
- internal
- proxy
environment:
PHP_DEBUGGER: xdebug
#XDEBUG_REMOTE_HOST: <your host IP address>
XDEBUG_REMOTE_PORT: 9000
XDEBUG_REMOTE_AUTOSTART: 1
XDEBUG_REMOTE_CONNECT_BACK: 1
XDEBUG_PROFILER_ENABLE: 1
XDEBUG_PROFILER_ENABLE_TRIGGER: 1000
traefik:
image: traefik
container_name: citizen-game-traefik
command: --web --docker --docker.domain=docker --logLevel=DEBUG
ports:
- "80:80"
- "443:443"
- "8080:8080"
volumes:
- /var/run/docker.sock:/var/run/docker.sock
restart: always
networks:
- internal
- proxy
rabbitmq:
networks:
- internal
- proxy
networks:
proxy:
external:
name: traefik
internal:
EDIT 2:
@Mostafa
I ran the following:
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' my-app-app
Result is:
172.18.0.7172.19.0.5
Trying these directly from the browser fails "This site can't be reached". I suppose it was to be expected.
I ran the following from inside the container:
bash-4.4# supervisorctl status apache:apached
apache:apached RUNNING pid 13575, uptime 0:00:00
As suggested, I used ss -plant | grep 80. This does not work from within the container. Here is the result when called outside of it:
[/var/www/html/my-app]$ ss -plant | grep 80
LISTEN 0 80 127.0.0.1:3306 0.0.0.0:*
ESTAB 0 0 192.168.1.88:39360 198.252.206.25:443 users:(("chromium-browse",pid=4203,fd=80))
SYN-SENT 0 1 192.168.1.88:50680 192.241.181.178:443 users:(("chromium-browse",pid=4203,fd=41))
LISTEN 0 128 *:80 *:*
LISTEN 0 128 *:8080 *:*
I'm not sure it tells much though. I tried to install ss from inside the container with apk but:
bash-4.4# apk add ss
ERROR: unsatisfiable constraints:
ss (missing):
required by: world[ss]
EDIT 3:
Here is the result of calling netstat:
bash-4.4# netstat -plant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 229/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.11:32843 0.0.0.0:* LISTEN -
tcp 0 0 :::22 :::* LISTEN 229/sshd
tcp 0 0 :::9000 :::* LISTEN 225/php-fpm.conf)
bash-4.4# netstat -plant | grep httpd
(nothing)
I'm not sure how much this helps though, since my other project, that works, yields the same result n bash-4.4# netstat -plant | grep httpd. Without the grep, it includes much more lines, though.
