I have recently started migrating to Docker 1.9 and Docker-Compose 1.5's networking features to replace using links.
So far with links there were no problems with nginx connecting to my php5-fpm fastcgi server located in a different server in one group via docker-compose. Newly though when I run docker-compose --x-networking up
my php-fpm, mongo and nginx containers boot up, however nginx quits straight away with [emerg] 1#1: host not found in upstream "waapi_php_1" in /etc/nginx/conf.d/default.conf:16
However, if I run the docker-compose command again while the php and mongo containers are running (nginx exited), nginx starts and works fine from then on.
This is my docker-compose.yml
file:
nginx:
image: nginx
ports:
- "42080:80"
volumes:
- ./config/docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
php:
build: config/docker/php
ports:
- "42022:22"
volumes:
- .:/var/www/html
env_file: config/docker/php/.env.development
mongo:
image: mongo
ports:
- "42017:27017"
volumes:
- /var/mongodata/wa-api:/data/db
command: --smallfiles
This is my default.conf
for nginx:
server {
listen 80;
root /var/www/test;
error_log /dev/stdout debug;
access_log /dev/stdout;
location / {
# try to serve file directly, fallback to app.php
try_files $uri /index.php$is_args$args;
}
location ~ ^/.+\.php(/|$) {
# Referencing the php service host (Docker)
fastcgi_pass waapi_php_1:9000;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include fastcgi_params;
# We must reference the document_root of the external server ourselves here.
fastcgi_param SCRIPT_FILENAME /var/www/html/public$fastcgi_script_name;
fastcgi_param HTTPS off;
}
}
How can I get nginx to work with only a single docker-compose call?
This can be solved with the mentioned depends_on
directive since it's implemented now (2016):
version: '2'
services:
nginx:
image: nginx
ports:
- "42080:80"
volumes:
- ./config/docker/nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
depends_on:
- php
php:
build: config/docker/php
ports:
- "42022:22"
volumes:
- .:/var/www/html
env_file: config/docker/php/.env.development
depends_on:
- mongo
mongo:
image: mongo
ports:
- "42017:27017"
volumes:
- /var/mongodata/wa-api:/data/db
command: --smallfiles
Successfully tested with:
$ docker-compose version
docker-compose version 1.8.0, build f3628c7
Find more details in the documentation.
There is also a very interesting article dedicated to this topic: Controlling startup order in Compose