I'm trying to create a docker based multi-container setup with a reverse proxy for multiple domains to serve, where the websites, the databases and the nginx based reverse proxy run in containers, but I don't know what am I missing (I'm new to nginx).
Details:
- NginX based docker container for reverse proxy
- There are 2 domains I own
- e.g.:
my_example_domain_1.com,my_example_domain_2.net
- e.g.:
- I would like to put a container behind each domain name to serve the two domains
- I would like to run two separated websites: e.g.: two WordPress websites
- I need the NginX route between the two domains and corresponding containers
My example: (basedir: multi-container)
nginx_revproxy/default.conf:
server {
listen 80;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
server {
listen 80;
server_name my_example_domain_1.com;
location / {
proxy_pass http://wp1:80;
}
}
server {
listen 80;
server_name my_example_domain_2.net;
location / {
proxy_pass http://wp2:80;
}
}
./nginx_revproxy/Dockerfile:
FROM nginx:stable-alpine
COPY default.conf /etc/nginx/conf.d
EXPOSE 80/tcp
EXPOSE 443/tcp
CMD ["/bin/sh", "-c", "exec nginx -g 'daemon off;';"]
WORKDIR /usr/share/nginx/html
./docker-compose.yml
version: '3.7'
services:
revproxy:
container_name: revproxy
build: nginx_revproxy
restart: always
networks:
- mynet
db1:
container_name: db1
image: mysql:5.7
volumes:
- "${PWD}/data_mysql1:/var/lib/mysql"
- "/tmp/db_site1:/tmp"
restart: always
environment:
MYSQL_ROOT_PASSWORD: somewordpress
MYSQL_DATABASE: wordpress
MYSQL_USER: wordpress
MYSQL_PASSWORD: wordpress
networks:
- mynet
db2:
container_name: db2
image: mysql:5.7
volumes:
- "${PWD}/data_mysql2:/var/lib/mysql"
- "/tmp/db_site2:/tmp"
restart: always
environment:
MYSQL_ROOT_PASSWORD: somewordpress
MYSQL_DATABASE: wordpress
MYSQL_USER: wordpress
MYSQL_PASSWORD: wordpress
networks:
- mynet
wp1:
container_name: wp1
depends_on:
- db1
- revproxy
image: wordpress:latest
ports:
- "8081:80"
restart: always
environment:
WORDPRESS_DB_HOST: db1:3306
WORDPRESS_DB_USER: wordpress
WORDPRESS_DB_PASSWORD: wordpress
WORDPRESS_DB_NAME: wordpress
volumes:
- "${PWD}/data_wordpress1:/var/www/html"
- "/tmp/wp_site1:/tmp"
networks:
- mynet
wp2:
container_name: wp2
depends_on:
- db2
- revproxy
image: wordpress:latest
ports:
- "8082:80"
restart: always
environment:
WORDPRESS_DB_HOST: db2:3306
WORDPRESS_DB_USER: wordpress
WORDPRESS_DB_PASSWORD: wordpress
WORDPRESS_DB_NAME: wordpress
volumes:
- "${PWD}/data_wordpress2:/var/www/html"
- "/tmp/wp_site2:/tmp"
networks:
- mynet
volumes:
data_mysql1:
data_mysql2:
data_wordpress1:
data_wordpress2:
networks:
mynet:
Sidenotes:
- TEST: If I take out the
revproxyfrom thedocker-compose.ymlfile and executedocker-compose up -don my desktop machine, I can access both websites (without the revproxy) on the container ports:localhost:8081,localhost:8082 - PROD: When I execute
docker-compose up -don my server, the websites can't be reached - PROD: all containers seem to run without error
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
974fa178b964 wordpress:latest "docker-entrypoint.s…" 45 seconds ago Up 41 seconds 0.0.0.0:8081->80/tcp wp1
bdace64331b7 wordpress:latest "docker-entrypoint.s…" 45 seconds ago Up 41 seconds 0.0.0.0:8082->80/tcp wp2
9877a41d4bfa multi-container-2_revproxy "/bin/sh -c 'exec ng…" 47 seconds ago Up 41 seconds 80/tcp, 443/tcp revproxy
e88e226499f2 mysql:5.7 "docker-entrypoint.s…" 47 seconds ago Up 44 seconds 3306/tcp, 33060/tcp db2
9feaec1b2314 mysql:5.7 "docker-entrypoint.s…" 47 seconds ago Up 44 seconds 3306/tcp, 33060/tcp db1
- PROD:
$ docker logs -f revproxy
2020/04/09 08:34:21 [emerg] 1#1: host not found in upstream "wp1" in /etc/nginx/conf.d/default.conf:20
nginx: [emerg] host not found in upstream "wp1" in /etc/nginx/conf.d/default.conf:20
- PROD: all of the containers seem to share the same network interface
$ docker inspect multi-container_mynet
docker inspect multi-container_mynet
[
{
"Name": "multi-container_mynet",
"Id": "24e1dd604427db695709056290b9c86021674916d57133b24e33fe765cd26165",
"Created": "2020-04-09T10:44:59.568919008+02:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.31.0.0/16",
"Gateway": "172.31.0.1"
}
]
},
"Internal": false,
"Attachable": true,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"18d60a010dafca22dd03c2f60cf1b2a607f7ac19ea00e88cd6baff6ada392545": {
"Name": "revproxy",
"EndpointID": "14974557d1876df15e35ffacb333a4d15883b7645cd90fe819cc2763118c7151",
"MacAddress": "02:42:ac:1f:00:02",
"IPv4Address": "172.31.0.2/16",
"IPv6Address": ""
},
"4b591fcb01c464d9ce932ab8e67e9409c2e19e725ab75faa5bcfd2c322ced1b8": {
"Name": "db1",
"EndpointID": "a3631f7943701b333b203e48d816853ef7da4739cfbd265edc6126aad9fbc832",
"MacAddress": "02:42:ac:1f:00:04",
"IPv4Address": "172.31.0.4/16",
"IPv6Address": ""
},
"885434c047c3eb2f5794a307a51dc5057384744a5483857474e41c697d2c954d": {
"Name": "db2",
"EndpointID": "d1840498f59f96840f44e1b91be0a69ff00cd78e06fea736e8f22f01e7fb8a94",
"MacAddress": "02:42:ac:1f:00:03",
"IPv4Address": "172.31.0.3/16",
"IPv6Address": ""
},
"9d90045cfe089418cb1886af89f79780f0d52f08bb876241c3d90d5fa5ab0dfd": {
"Name": "wp1",
"EndpointID": "2052ae635d5317e6928bb961d183c280add219b09ac042fc56a6f26c3410531e",
"MacAddress": "02:42:ac:1f:00:06",
"IPv4Address": "172.31.0.6/16",
"IPv6Address": ""
},
"b9caf876f7f4f8bbf2d77c422f0179e647bcfd22b0129de0a83c90360df54612": {
"Name": "wp2",
"EndpointID": "479bbd8d29cff9644c008316c91cdecac75f3f8ef107ad59f0d2e4683cd4b81c",
"MacAddress": "02:42:ac:1f:00:05",
"IPv4Address": "172.31.0.5/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {
"com.docker.compose.network": "mynet",
"com.docker.compose.project": "multi-container",
"com.docker.compose.version": "1.23.1"
}
}
]
Does anyone have any idea?